JP7488668B2 - Suction port body and vacuum cleaner - Google Patents

Description

Embodiments of the present invention relate to a suction mouth body and a vacuum cleaner.

A suction mouth body is known that has a transparent or semi-transparent housing in which the bottom and top wall portions are integrally molded.

In this conventional suction port body, the rotating brush is placed in a suction chamber having a suction port. Therefore, in the conventional suction port body, the thread-like dust sucked in through the suction port is likely to get entangled around the rotating brush as it is sucked from the suction port into the suction chamber.

JP 2018-075187 A

In conventional suction port bodies, the rotating brush is placed in a suction chamber having a suction port. Therefore, in conventional suction port bodies, the thread-like dust sucked in through the suction port is likely to get entangled around the rotating brush as it is sucked from the suction port into the suction chamber. However, because conventional suction port bodies have a transparent or semi-transparent housing, it is easy to know when thread-like dust has gotten entangled around the rotating brush.

Therefore, the present invention proposes a suction port body and a vacuum cleaner that can prevent thread-like dust from wrapping around the rotating cleaning body, and that, if thread-like dust does wrap around the rotating cleaning body, makes it easy to know that this has happened.

In order to solve the above-mentioned problems, a suction port body according to an embodiment of the present invention includes a suction port that opens toward a bottom surface, a suction chamber connected to the suction port, and a plurality of cleaning body chambers including a first cleaning body chamber and a second cleaning body chamber that are partitioned outside the suction chamber and sandwich the suction port therebetween, a first rotating cleaning body that is disposed in the first cleaning body chamber and rotatably supported by the suction port body, and a second rotating cleaning body that is disposed in the second cleaning body chamber and rotatably supported by the suction port body, the plurality of rotating cleaning bodies being disposed in each of the cleaning body chambers, and at least one driving source that is housed in the suction port body and generates a driving force for the plurality of rotating cleaning bodies. and each of the rotating cleaning bodies, when the suction port body is placed on the surface to be cleaned, rotates in a direction to sweep up dust from the surface to be cleaned toward the suction port, and the suction port body is sandwiched between adjacent rotating cleaning bodies and comprises an impermeable outer shell spanning the entire width of the suction port body, and a single member spanning the outer shell, partitioning each of the cleaning body chambers and visually covering at least a portion of the outer circumferential surface of each of the rotating cleaning bodies , and the transparent wall extends along the rotation direction of the rotating cleaning body from the portion of the corresponding rotating cleaning body farthest from the surface to be cleaned when the suction port body is placed on the surface to be cleaned.

The electric vacuum cleaner according to the embodiment of the present invention includes a vacuum cleaner body, an electric blower housed in the vacuum cleaner body and generating negative pressure, and the suction mouth body fluidly connected to the electric blower.

1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention. FIG. 2 is a perspective view showing the suction port body according to the embodiment of the present invention from the right front. FIG. 2 is a plan view of a suction port body according to an embodiment of the present invention. FIG. 2 is a plan view of a suction port body according to an embodiment of the present invention. FIG. 4 is a bottom view of the suction port body according to the embodiment of the present invention. FIG. 2 is a perspective view of a suction port body according to an embodiment of the present invention, viewed from below. FIG. 2 is a longitudinal cross-sectional view of a suction port body according to an embodiment of the present invention. FIG. 2 is a longitudinal cross-sectional view of a suction port body according to an embodiment of the present invention. FIG. 4 is a control block diagram of the suction port body according to the embodiment of the present invention.

The embodiment of the suction mouth body and electric vacuum cleaner according to the present invention will be described with reference to Figures 1 to 9.

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

As shown in FIG. 1, the electric vacuum cleaner 1 according to this embodiment is, for example, a stick type, and includes a vacuum cleaner body 12 having a handle 11 for hand-held operation, a secondary battery 13 (also called a storage battery, rechargeable battery, or rechargeable battery) that can be attached to and detached from the vacuum cleaner body 12, an extension tube 15 connected to the vacuum cleaner body 12, and a suction port body 16 connected to the extension tube 15.

The vacuum cleaner 1 may be a canister type, an upright type, or a handheld type. The vacuum cleaner 1 may be a cordless type that uses a secondary battery 13 as a power source, or a wired type that obtains power from a commercial AC power source via a power cord.

The vacuum cleaner body 12 includes a body case 17 having a handle 11, an electric blower 18 housed in the body case 17 and generating a negative suction pressure, a dust separation and collection unit 19 detachably mounted on the body case 17, and a body control unit 21 that mainly controls the electric blower 18.

The vacuum cleaner body 12 drives the electric blower 18 using the power stored in the secondary battery 13, and the negative pressure generated by driving the electric blower 18 acts on the extension tube 15. The vacuum cleaner 1 sucks in dust-containing air (hereinafter referred to as "dust-containing air") from the floor surface through the suction port body 16 and the extension tube 15, separates the dust from the dust-containing air, collects and accumulates the separated dust, and exhausts the separated air.

The main body case 17 has a cylindrical front half 17a that is positioned on the extension line of the extension tube 15 in a side view, and a rear half 17b that bends from the front half 17a and gradually moves away from the extension line of the extension tube 15. A dust separation and collection unit 19 is provided above the front half 17a of the main body case 17. The rear half 17b of the main body case 17 extends rearward in the usage state (Figure 2) where the suction mouth body 16 is placed on the floor.

A main body connection port 23 is provided on the front portion of the main body case 17.

The main body connection port 23 is a joint to which the extension tube 15 can be detachably attached. The main body connection port 23 protrudes toward the front from the cylindrical front half 17a of the main body case 17. The main body connection port 23 is a fluid inlet of the vacuum cleaner main body 12, and fluidly connects the extension tube 15 and the dust separation and collection unit 19. By removing the extension tube 15 from the vacuum cleaner main body 12, the main body connection port 23 also functions as a suction port when the vacuum cleaner main body 12 is used alone.

The handle 11 is integral with the main body case 17. The handle 11 is the part that the user holds in his/her hand when cleaning a floor surface with the vacuum cleaner 1. The handle 11 spans in an arch shape from near the rear end of the dust separation and collection unit 19 to the rear end of the main body case 17. The handle 11 is also positioned so as to intersect with an extension of the center line of the extension tube 15.

An input unit 26 is provided near the handle 11 and is positioned within the range where a user holding the handle 11 can move their fingers.

The input unit 26 includes an operation start switch 26a that accepts an operation to start the electric blower 18, an operation stop switch 26b that accepts an operation to stop the electric blower 18, and a brush switch 26c that accepts an operation to start and stop the power supply to the suction port body 16. The operation start switch 26a and the operation stop switch 26b are electrically connected to the main body control unit 21. The user of the electric vacuum cleaner 1 can select one of the operation modes of the electric blower 18 by operating the input unit 26. The operation start switch 26a also functions as a changeover switch for the operation mode while the electric blower 18 is in operation. In this case, the main body control unit 21 switches the operation mode in the following order each time it receives an operation signal from the operation start switch 26a. Note that the input unit 26 may be provided with a strong operation switch (not shown), a medium operation switch (not shown), and a weak operation switch (not shown) separately instead of the operation start switch 26a.

The dust separation and collection unit 19 is disposed on the upper surface side of the vacuum cleaner body 12 and can be attached and detached to the vacuum cleaner body 12. The dust separation and collection unit 19 separates, captures, and accumulates dust from the dust-laden air that flows into the vacuum cleaner body 12, while sending clean air from which dust has been removed to the electric blower 18. The dust separation and collection unit 19 may be of a centrifugal separation type that centrifuges dust and air by utilizing the difference in mass between the dust and air sucked into the electric vacuum cleaner 1, or may be of a filtration and separation type that has a filter that filters out dust from the dust-laden air.

The electric blower 18 draws in air from the dust separation and collection section 19 to generate negative pressure (suction negative pressure).

The main body control unit 21 includes a microprocessor and a storage device that stores various calculation programs executed by the microprocessor, parameters, and the like. The storage device stores various settings (arguments) related to a plurality of pre-set operating modes. The plurality of operating modes are associated with the output of the electric blower 18. A mutually different input value (input value of the electric blower 18, target value of the current flowing through the electric blower 18) is set for each operating mode. Each operating mode is associated with an operation input received by the input unit 26. The main body control unit 21 selects an arbitrary operating mode corresponding to the operation input to the input unit 26 from among the plurality of pre-set operating modes. The main body control unit 21 also reads the setting of the selected operating mode from the storage device, and operates the electric blower 18 according to the setting of the read operating mode.

The secondary battery 13 stores the power consumed by the electric blower 18 and the main body control unit 21. The secondary battery 13 may be fixed to the main body case 17, or may be detachable from the main body case 17. In other words, the vacuum cleaner 1 may or may not be able to use multiple secondary batteries 13 by replacing them as appropriate. When the charge rate of the secondary battery 13 detachably attached to the vacuum cleaner 1 decreases, the secondary battery 13 can be replaced with a charged secondary battery 13, allowing the vacuum cleaner 1 to continue operating.

The extension tube 15 and suction port body 16 suck in dust on the floor surface together with air using the negative pressure applied by the electric blower 18 and guide it to the vacuum cleaner body 12.

The extension tube 15 is fluidly connected to the suction side of the electric blower 18 via the main body connection port 23 of the main body case 17 and the dust separation and collection section 19. The extension tube 15 has a length that substantially reaches the floor surface when the user is holding the handle 11 of the vacuum cleaner main body 12. One end of the extension tube 15 is provided with a joint structure that can be attached and detached to the main body connection port 23 of the vacuum cleaner main body 12. The other end of the extension tube 15 is provided with a joint structure that can be attached and detached to the suction port body 16 of the vacuum cleaner main body 12. The extension tube 15 may or may not be extendable.

The suction mouth body 16 can run or slide freely on a floor surface such as a wooden floor or carpet, and has a suction mouth 27 on the bottom surface that faces the floor surface when running or sliding. The suction mouth body 16 also has a rotatable rotating cleaning body 28 and an electric motor 29 as a drive source for driving the rotating cleaning body 28. One end of the suction mouth body 16 is provided with a detachable joint structure on the other end of the extension tube 15. The suction mouth body 16 is fluidly connected to the suction side of the electric blower 18 via the extension tube 15. The suction mouth body 16, the extension tube 15, and the dust separation and collection unit 19 form an intake air passage that runs from the electric blower 18 to the suction mouth 27.

When the operation start switch 26a is operated, the vacuum cleaner 1 starts the electric blower 18. For example, when the operation start switch 26a is operated while the electric blower 18 is stopped, the vacuum cleaner 1 first starts the electric blower 18 in a strong operation mode, and when the operation start switch 26a is operated again, the operation mode of the electric blower 18 is changed to a medium operation mode, and when the operation start switch 26a is operated a third time, the operation mode of the electric blower 18 is changed to a weak operation mode, and so on. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes that are set in advance. The input value of the electric blower 18 in the strong operation mode is the largest, and the input value of the electric blower 18 in the weak operation mode is the smallest. The started electric blower 18 sucks air from the dust separation and collection unit 19, creating a negative pressure inside the dust separation and collection unit 19.

The negative pressure in the dust separation and collection unit 19 acts on the suction port 27 through the main body connection port 23, extension tube 15, and suction port body 16 in sequence. The vacuum cleaner 1 uses the negative pressure acting on the suction port 27 to suck in dust on the surface to be cleaned together with air, cleaning the surface. The dust separation and collection unit 19 separates and accumulates dust from the dust-containing air sucked into the vacuum cleaner 1, while sending the air separated from the dust-containing air to the electric blower 18. The electric blower 18 exhausts the air sucked in from the dust separation and collection unit 19 to the outside of the vacuum cleaner main body 12.

Next, the suction port body 16 will be described in detail.

Figure 2 is a perspective view of the suction mouth body according to an embodiment of the present invention, viewed from the front right.

As shown in FIG. 2, the suction port body 16 according to this embodiment includes a substantially rectangular suction port body 31 and a connecting pipe 32 provided at the rear of the suction port body 31.

Note that the front/back, left/right, and up/down directions of the suction port body 16 are described with reference to 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 16, and the opposite direction is the rearward or backward direction. The direction of the solid arrow Y in Fig. 2 is to the left of the suction port body 16, and the opposite direction is to the right. Furthermore, the direction of the solid arrow Z in Fig. 2 is above the suction port body 16, and the opposite direction is below.

The shape of the suction port body 31 in plan view is a rectangle with short sides in the front-to-rear direction and long sides in the left-to-right direction. In other words, the left-to-right dimension of the suction port body 31, i.e., the width dimension, is greater than the front-to-rear dimension of the suction port body 31, i.e., the depth dimension. The suction port body 31 comprises a lower case 35 and an upper case 36 that covers the lower case 35.

The connection pipe 32 is provided at the rear of the suction port body 31 and approximately in the center in the width direction. The connection pipe 32 includes a rotating connection pipe 38 that can rotate relative to the suction port body 31, and a swinging connection pipe 39 that can swing relative to the rotating connection pipe 38.

The rotary connection pipe 38 rotates around a center line (a line segment coinciding with the X-axis or a line segment parallel to the X-axis) that extends in the front-rear direction of the suction port body 16. This center line bisects the suction port body 31 into a left and right half.

The swingable connection pipe 39 swings around a line segment perpendicular to the center line of rotation of the rotating connection pipe 38 or a line segment parallel to this line segment. The free end of the swingable connection pipe 39 is a joint that can be detached from the free end of the extension pipe 15.

Figures 3 and 4 are plan views of the suction port body according to an embodiment of the present invention.

Figure 5 is a bottom view of a suction port body according to an embodiment of the present invention.

Figure 6 is a perspective view of the suction mouth body according to an embodiment of the present invention, viewed from below.

Figure 7 is a vertical cross-sectional view of a suction port body according to an embodiment of the present invention taken along line VII-VII in Figure 3.

Figure 8 is a vertical cross-sectional view of a suction port body according to an embodiment of the present invention taken along line VIII-VIII in Figure 3.

In Figure 4, the upper case 36 has been removed.

As shown in Figures 3 to 7, the suction port body 16 according to this embodiment includes a suction port main body 31, a rotating cleaning body 28 rotatably supported by the suction port main body 31, an electric motor 29 housed in the suction port main body 31 as a drive source for generating a rotational driving force for the rotating cleaning body 28, a power transmission mechanism 41 for transmitting the driving force from the electric motor 29 to the rotating cleaning body 28, and a suction port body control unit 42 for controlling the operation of the electric motor 29.

The suction port body 31 also has a suction port 27 that opens toward the bottom surface 31a, a suction chamber 45 that is connected to the suction port 27, and a cleaning body chamber 46 that houses the rotating cleaning body 28.

Furthermore, the suction port body 31 is provided with a transparent wall 47 that defines a portion of the cleaning body chamber 46 and visually covers at least a portion of the outer circumferential surface of the rotating cleaning body 28.

The cleaning chamber 46 is partitioned outside the suction chamber 45. The cleaning chamber 46 is open toward the bottom surface of the suction port body 31.

The suction chamber 45 is defined by the lower case 35, the air passage cover 48 that is housed inside the upper case 36 and covers part of the lower case 35, and the air passage narrowing body 49 that narrows the wide suction port 27 in the left-right direction of the suction port body 31 toward the center. In other words, the lower case 35, the air passage cover 48, and the air passage narrowing body 49 cooperate to define the suction chamber 45.

The bottom surface 31a of the suction port body 31 is provided with a number of rollers 50 that contact the surface to be cleaned f and support the suction port body 31. The rollers 50 include rollers 50 located at the left and right ends of the suction port body 31 and rollers 50 located at the rear center of the suction port body 31.

A space is defined between the lower case 35 and the upper case 36 of the suction port body 31. This space includes an electric motor chamber 51 that houses the electric motor 29, a machine chamber 52 that houses the power transmission mechanism 41, and a control chamber 53 that houses the suction port body control unit 42. The electric motor chamber 51, the machine chamber 52, and the control chamber 53 may be connected or separated.

The control chamber 53 is located in the center of the intake body 31 in the front-rear and left-right directions when viewed from above.

The suction port body 31 is equipped with a pair of rotating cleaning bodies 28 that sandwich the suction port 27 from the front and rear of the suction port body 16.

The electric motors 29 and the power transmission mechanisms 41 are also paired and are individually associated with each rotating cleaning body 28. The pair of electric motors 29 includes an electric motor 29 provided at one end of the suction port body 31 in the width direction, and an electric motor 29 provided at the other end of the suction port body 31 in the width direction. It is preferable that the pair of electric motors 29 are arranged at locations substantially the same distance from the center line that divides the suction port body 31 into left and right. The pair of power transmission mechanisms 41 includes a power transmission mechanism 41 provided at one end of the suction port body 31 in the width direction, and a power transmission mechanism 41 provided at the other end of the suction port body 31 in the width direction. It is preferable that the pair of power transmission mechanisms 41 are arranged at locations substantially the same distance from the center line that divides the suction port body 31 into left and right.

The rotating cleaning body 28 forward of the suction port 27 is called the front cleaning body 28F (first rotating cleaning body). The cleaning body chamber 46 in which the front cleaning body 28F is housed is called the front cleaning body chamber 46F (first rotating cleaning body chamber). The electric motor 29 corresponding to the front cleaning body 28F is called the front electric motor 29F, and the power transmission mechanism 41 corresponding to the front cleaning body 28F is called the front transmission mechanism 41F. The electric motor chamber 51 in which the front electric motor 29F is housed is called the front electric motor chamber 51F, and the machine chamber 52 in which the front transmission mechanism 41F is housed is called the front machine chamber 52F.

The rotating cleaning body 28 rearward of the suction port 27 is called the rear cleaning body 28R (second rotating cleaning body). The cleaning body chamber 46 in which the rear cleaning body 28R is housed is called the rear cleaning body chamber 46R (second rotating cleaning body chamber). The electric motor 29 corresponding to the rear cleaning body 28R is called the rear electric motor 29R, and the power transmission mechanism 41 corresponding to the rear cleaning body 28R is called the rear transmission mechanism 41R. The electric motor chamber 51 in which the rear electric motor 29R is housed is called the rear electric motor chamber 51R, and the machine chamber 52 in which the rear transmission mechanism 41R is housed is called the rear machine chamber 52R.

The front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R are aligned in the direction of travel of the suction port body 16. In other words, the front cleaning body 28F, the suction port 27, and the rear cleaning body 28R are aligned in the direction of travel of the suction port body 16. The front cleaning body 28F, the suction port 27, and the rear cleaning body 28R are aligned from the front side to the rear side of the suction port body 16. Furthermore, the front cleaning body 28F, the air path narrowing body 49, and the rear cleaning body 28R are aligned in the direction of travel of the suction port body 16. The front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R have substantially the same width dimensions.

When the suction port body 31 is placed on the surface to be cleaned f, the motor 29 rotates the rotating cleaning body 28 in a direction that sweeps up dust from the surface to be cleaned f to the suction port 27. In other words, the front motor 29F rotates the front cleaning body 28F in a direction Rf that assists the suction port body 16 in moving forward, and the rear motor 29R rotates the rear cleaning body 28R in a direction Rr that assists the suction port body 16 in moving backward.

The transparent wall 47 partitions a portion of each cleaning body chamber 46 and visually covers at least a portion of the outer circumferential surface of each rotating cleaning body 28. Therefore, the suction port body 31 has at least one window portion 55 that is blocked by the transparent wall 47. This window portion 55 may be provided in each cleaning body chamber 46, or may be provided across adjacent cleaning body chambers 46. The window portion 55 according to this embodiment includes a front cleaning body window 55F provided in the upper case 36 so that the front cleaning body 28F can be visually observed, and a rear cleaning body window 55R provided in the lower case 35 so that the rear cleaning body 28R can be visually observed.

The front cleaning body window 55F is located above the front cleaning body 28F and is open over the entire length of the front cleaning body 28F.

The rear cleaning body window 55R is located above the rear cleaning body 28R to avoid the suction chamber 45 that passes above the rear cleaning body chamber 46R and reaches the connecting pipe 32, and is open in two places, one on the left and one on the right of the rear cleaning body 28R. In other words, the rear cleaning body window 55R includes multiple split windows 55RL, 55RR that are split in the direction along the rotation center line of the rear cleaning body 28R.

The permeable wall 47 includes a first permeable wall 47A that blocks the front cleaning body window 55F and visually covers the front cleaning body window 55F, and a second permeable wall 47B that blocks the rear cleaning body window 55R and visually covers the rear cleaning body window 55R. The second permeable wall 47B may be divided in a direction along the rotation center line of the rear cleaning body 28R. In other words, at least one permeable wall 47 includes a plurality of divided permeable walls 47BL, 47BR that are divided in a direction along the rotation center line of the rear cleaning body 28R. In other words, at least one permeable wall 47 includes a plurality of divided permeable walls 47BL, 47BR that are divided in a direction along the rotation center line of at least one rotating cleaning body 28.

The first permeable wall 47A is fixed to the upper case 36. The first permeable wall 47A extends from the part of the front cleaning body 28F that is farthest from the surface to be cleaned f, i.e., the top 28Fa, along the rotation direction Rf of the front cleaning body 28F when the suction port body 31 is placed on the surface to be cleaned f. The second permeable wall 47B is fixed to the lower case 35. The second permeable wall 47B extends from the part of the rear cleaning body 28R that is farthest from the surface to be cleaned f, i.e., the top 28Ra, along the rotation direction Rr of the rear cleaning body 28R when the suction port body 31 is placed on the surface to be cleaned f. In other words, the permeable wall 47 extends from the part 28Fa, 28Ra that is farthest from the surface to be cleaned f of the corresponding rotating cleaning body 28 along the rotation direction of the rotating cleaning body 28 when the suction port body 31 is placed on the surface to be cleaned f.

The first permeable wall 47A covers the upper part of the front cleaning body 28F and defines the front opening edge (the opening edge farthest from the suction port 27) of the front cleaning body chamber 46F. The first permeable wall 47A is a permeable member 56 that also serves as part of the outer shell of the suction port body 31. In other words, the lower case 35, the upper case 36, and the permeable member 56 work together to form the outer shell of the suction port body 31. The permeable member 56 may be an integrated first permeable wall 47A and a second permeable wall 47B. In other words, the permeable member 56 may be all or part of the multiple permeable walls 47.

The transparent member 56 covers the upper case 36, straddles the upper part of the rear cleaning body chamber 46R, and is connected to the lower case 35 behind the rear cleaning body window 55R. In other words, the transparent member 56 cooperates with the second transparent wall 47B to doubly cover the rear cleaning body window 55R. The transparent member 56 is a molded or formed product made of transparent or translucent resin.

The suction port 27 is disposed between the front cleaning body chamber 46F and the rear cleaning body chamber 46R. In other words, the suction port 27 is disposed between the front cleaning body 28F and the rear cleaning body 28R. The suction port 27 faces the surface to be cleaned f without being obstructed by the front cleaning body 28F and the rear cleaning body 28R, and looks directly at the surface to be cleaned f.

The suction chamber 45 curves toward the rear of the suction port body 31 along the lower case 35 so as to cover the rear cleaning body chamber 46R, and is connected to the connection pipe 32. A relay pipe 57 is provided between the suction chamber 45 and the connection pipe 32. The relay pipe 57 serves as a base that supports the connection pipe 32. The relay pipe 57 is integrally molded with the air passage cover 48.

The front cleaning body chamber 46F is defined by the upper case 36, the lower case 35, the first permeable wall 47A of the permeable wall 47, and the air passage narrowing body 49. In other words, the upper case 36, the lower case 35, the first permeable wall 47A of the permeable wall 47, and the air passage narrowing body 49 cooperate to define the front cleaning body chamber 46F. The front cleaning body chamber 46F can be seen from outside the suction port body 31 through the first permeable wall 47A.

The rear cleaning body chamber 46R is defined by the lower case 35, the second permeable wall 47B of the permeable wall 47, and the air passage narrowing body 49. In other words, the lower case 35, the second permeable wall 47B of the permeable wall 47, and the air passage narrowing body 49 cooperate to define the rear cleaning body chamber 46R. The rear cleaning body chamber 46R can be seen from outside the suction port body 31 through the second permeable wall 47B.

The machine chamber 52 is located at each of the left and right ends of the suction port body 31, and is partitioned into areas where the front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R are not present. The machine chamber 52 houses the axial end of the front cleaning body 28F and the axial end of the rear cleaning body 28R. A roller 50 is provided at the bottom of the machine chamber 52.

The front machine chamber 52F is the left end of the suction port body 31 and is partitioned into areas where the front cleaning body chamber 46F, suction port 27, and rear cleaning body chamber 46R are not present. The front machine chamber 52F houses the axial end of the front cleaning body 28F and the axial end of the rear cleaning body 28R.

The rear machine chamber 52R is the right end of the suction port body 31 and is partitioned into the area where the front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R are not present. The rear machine chamber 52R houses the axial end of the front cleaning body 28F and the axial end of the rear cleaning body 28R.

The motor chamber 51 overlaps the front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R in a plan view, and is disposed between the control chamber 53 and the machine chamber 52. In a side view, the rotation center lines of the front cleaning body 28F, the rear cleaning body 28R, and the motor 29 are located at the vertices of a triangle. The motor chamber 51 houses the cylindrical motor 29 as close as possible to the front cleaning body chamber 46F and the rear cleaning body chamber 46R. In other words, the bottom of the motor 29 is disposed below the top 28Fa of the front cleaning body 28F and the top 28Ra of the rear cleaning body 28R. In other words, the motor 29 has a portion closer to the surface to be cleaned f than the line connecting the portion 28Fa of the front cleaning body 28F that is the furthest from the surface to be cleaned f and the portion 28Ra of the rear cleaning body 28R that is the furthest from the surface to be cleaned f, and is disposed between the front cleaning body 28F and the rear cleaning body 28R. This arrangement of the motor 29 and the configuration of the motor chamber 51 keep the height of the suction port body 31 lower than the sum of the height (diameter) of the rotary cleaning body 28 and the height (diameter) of the motor 29, even when the motor 29 is disposed above the rotary cleaning body 28.

The front motor room 51F is located on the left side of the suction port body 31 and is adjacent to the front machine room 52F.

The rear motor chamber 51R is located on the right side of the suction port body 31 and is adjacent to the rear machine chamber 52R.

If the front motor chamber 51F and the front machine chamber 52F are provided together, the front motor chamber 51F and the front machine chamber 52F may be arranged on the right side of the suction port body 31. In this case, the front transmission mechanism 41F is also arranged on the right side of the suction port body 31. The rear motor chamber 51R, the rear machine chamber 52R, and the rear transmission mechanism 41R are arranged on the left side of the suction port body 31.

The center line of rotation of the rotating cleaning body 28 is oriented in the width direction of the suction port body 31. The rotating cleaning body 28 has brush bristles 59 extending radially. The brush bristles 59 are multiple bristles that extend in the longitudinal direction of the rotating cleaning body 28 and are arranged in the circumferential direction of the rotating cleaning body 28.

The electric motor 29 has an output shaft 29a that protrudes into the machine chamber 52. The rotation center line of the output shaft 29a is substantially parallel to the rotation center line of the rotating cleaning body 28. The suction port body 16 may be provided with a drive source for the rotating cleaning body 28 instead of the electric motor 29, such as a fan or turbine that rotates with air sucked in by the suction negative pressure.

The power transmission mechanism 41 includes a driving gear 61 fixed to the output shaft 29a of the electric motor 29, a driven gear 62 provided on the rotating cleaning body 28, and an endless belt 63 that is wound around the driving gear 61 and the driven gear 62 to transmit the driving force from the electric motor 29 to the rotating cleaning body 28.

The suction port body control unit 42 operates the electric motor 29 using power supplied from the vacuum cleaner body 12 via the extension tube 15.

The air passage narrowing body 49 is provided with a partition wall 65 that divides the suction chamber 45 and the cleaning body chamber 46, separates the suction chamber 45 from the cleaning body chamber 46, and defines a part of the edge of the suction port 27, and a dust removal protrusion 66 that protrudes from the edge of the partition wall 65 and contacts the rotating cleaning body 28.

The partition 65 that separates the suction chamber 45 and the front cleaning body chamber 46F is called the front partition 65F (first partition). The front partition 65F defines the front edge of the suction port 27. The dust removal protrusion 66 that protrudes from the edge of the front partition 65F and contacts the front cleaning body 28F is called the front protrusion 66F (first dust removal protrusion).

The partition 65 that separates the suction chamber 45 and the rear cleaning body chamber 46R is called the rear partition 65R (second partition). The rear partition 65R defines the rear edge of the suction port 27. The dust removal protrusion 66 that protrudes from the edge of the rear partition 65R and contacts the rear cleaning body 28R is called the rear protrusion 66R (second dust removal protrusion).

A part of the inner surface of the suction chamber 45 (here, the rear inner surface of the suction chamber 45, the first remaining part of the inner surface of the suction chamber 45) faces the front partition 65F and has a curved surface 68 in the shape of an arc that is convex toward the front partition 65F. The curved surface 68 includes the inner surface of the rear partition 65R and a surface of the lower case 35 that is continuous with the inner surface of the rear partition 65R. The lower case 35 has an arc-shaped wall that defines a part of the rear cleaning body chamber 46R. This wall has a substantially uniform thickness, concentrically surrounds the rear cleaning body 28R, and smoothly continues with the inner surface of the rear partition 65R.

Dust swept up from the surface to be cleaned f by the rotation of the front cleaning body 28F heads toward the curved surface 68 of the suction chamber 45. The curved surface 68 then smoothly guides the approaching dust toward the back (downstream) side of the suction chamber 45.

In addition, a part of the inner surface of the suction chamber 45 (here, the inner surface on each of the left and right sides of the suction chamber 45, the second remaining part of the inner surface of the suction chamber 45) has a funnel-shaped inclined surface 71 that is connected to the partition 65 and narrows the air passage width toward the back side (downstream side) of the suction chamber 45. The inclined surface 71 is connected to the front partition 65F and the rear partition 65R. In other words, the inclined surface 71 is bridged between the front partition 65F and the rear partition 65R. There are a pair of inclined surfaces 71 on the left and right of the air passage narrowing body 49. The left and right inclined surfaces 71 are inclined so that they move away from the corresponding end of the air passage narrowing body 49 and enter the back side of the suction chamber 45 as they approach the center. The left and right inclined surfaces 71 are separated without merging. The gap between the left and right inclined surfaces 71 is connected to the suction chamber 45 on the back side of the inclined surface 71. The inclined surface 71 smoothly guides the air drawn in through the suction port 27, which is elongated and spreads out in the width direction of the suction port body 16, to the back side of the suction chamber 45, which is connected to the connecting pipe 32.

The inclined surface 71 has a step shape including a guide surface 72 facing the partition wall 65 in a vertical cross-sectional view of the suction port body 31. The guide surface 72 faces the front partition wall 65F. This step shape may be a single step as shown in FIG. 7, or may be multiple steps. It is preferable that the step shape reaches the entire width of the inclined surface 71. The bottom shape of each step may be flat or recessed. It is preferable that the guide surface 72 is parallel to the front partition wall 65F. The guide surface 72 captures dust swept up by the front cleaning body 28F and guides it to the back side of the suction chamber 45. In addition, the guide surface 72 guides the end of the thread-like dust to the back side of the suction chamber 45 so that the middle part of the guide surface 72 is sandwiched between the front cleaning body 28F and the surface to be cleaned f, and one or both ends of the thread-like dust that have risen toward the suction port 27 do not climb over the rear partition wall 65R and approach the rear cleaning body 28R side.

The dust removal protrusions 66 are inserted inside the rotational trajectory of the rotating cleaning body 28. The dust removal protrusions 66 repel the brush bristles 59 of the rotating cleaning body 28 as the rotating cleaning body 28 rotates. At this time, the dust removal protrusions 66 repel thread-like dust that has adhered to the rotating cleaning body 28 and is attempting to enter the cleaning body chamber 46 from the brush bristles 59, causing it to separate from the rotating cleaning body 28. The thread-like dust that has separated from the rotating cleaning body 28 is easily sucked into the suction port 27. In other words, the dust removal protrusions 66 can prevent the thread-like dust that has adhered to the rotating cleaning body 28 from entering the cleaning body chamber 46.

It is preferable that the dust removal protrusions 66 are provided across the entire width of the partition 65. It is sufficient that the dust removal protrusions 66 are capable of bending the brush bristles 59 of the rotating cleaning body 28. Therefore, the shape of the dust removal protrusions 66 may be comb-shaped as shown in Figures 5 and 6, or may be a plate-like shape with a uniform protruding length across the entire width. Since the rotational resistance of the rotating cleaning body 28 increases when the dust removal protrusions 66 come into contact, the shape of the dust removal protrusions 66 is appropriately set according to the output of the electric motor 29.

If the contact surface of the suction port body 16 is taken as the reference surface, the front protrusion 66F is substantially parallel to the reference surface. The rear protrusion 66R protrudes at an angle away from the reference surface.

Typically, a user advances the suction mouth body 16 to make it enter the uncleaned surface f to be cleaned. At this time, thread-like dust on the surface f to be cleaned moves from the front to the rear of the suction mouth body 16. The inventor discovered that by making the front protrusion 66F substantially parallel to the reference surface while tilting the rear protrusion 66R away from the reference surface, thread-like dust becomes less likely to enter both the front cleaning body chamber 46F and the rear cleaning body chamber 46R.

The rear partition 65R also has a hole 73 that connects the suction chamber 45 and the rear cleaning body chamber 46R. The hole 73 is located in the range between the left and right inclined surfaces 71. There may be multiple holes 73. The hole 73 discharges dust that has entered the rear cleaning body chamber 46R to the suction chamber 45 so that it does not remain in the rear cleaning body chamber 46R.

The dust that has entered the front cleaning body chamber 46F is discharged to the front of the suction port body 16 as the front cleaning body 28F rotates. In other words, dust that has entered the front cleaning body chamber 46F has a greater chance of being sucked into the suction port 27 while the suction port body 16 is moving forward than dust that has entered the rear cleaning body chamber 46R. For this reason, the front partition 65F does not need to have holes 73 like the rear partition 65R.

In addition, if dust gets into the cleaning chamber 46, the user can visually check this through the transparent wall 47. In other words, the user can visually check whether dust has got into the front cleaning chamber 46F through the first transparent wall 47A, and can visually check whether dust has got into the rear cleaning chamber 46R through the second transparent wall 47B.

A protrusion 75 having an acute cross-sectional shape toward the rear cleaning body 28R is provided at a portion of the opening edge of the rear cleaning body chamber 46R facing the rear projection 66R. The protrusion 75 is provided at the rear part of the opening edge of the rear cleaning body chamber 46R. When the suction port body 16 is used on a soft surface f to be cleaned such as a carpet, the suction port body 31 sinks into the surface f to be cleaned. In such a case, the protrusion 75 scrapes up the surface f to be cleaned like the blade of a bulldozer, scraping out the dust that has gotten into the carpet.

It is preferable that the protrusion 75 spans the entire width of the rear cleaning chamber 46R. In addition, when the suction port body 16 is used on a hard surface to be cleaned such as a hard floor, the protrusion 75 may protrude downward from the bottom surface of the suction port body 31 without coming into contact with the surface to be cleaned.

In addition, the suction port body 16 may have three or more rotating cleaning bodies 28, including the front cleaning body 28F and the rear cleaning body 28R, which sandwich the suction port 27. In other words, the suction port body 16 may have three or more cleaning body chambers 46, including the front cleaning body chamber 46F and the rear cleaning body chamber 46R, which are partitioned outside the suction chamber 45 and sandwich the suction port 27, and three or more rotating cleaning bodies 28, including the front cleaning body 28F and the rear cleaning body 28R, which are arranged in each cleaning body chamber 46. In this case, it is preferable that the cleaning body chambers 46 and the rotating cleaning bodies 28 are provided in the same number. The electric motors 29, the electric motor chambers 51, the power transmission mechanism 41, and the machine chambers 52 may be provided in the same number as the cleaning body chambers 46 and the rotating cleaning bodies 28, or may be fewer than the cleaning body chambers 46 and the rotating cleaning bodies 28 as long as the multiple rotating cleaning bodies 28 can be driven simultaneously. For example, the driving force of one electric motor 29 may be distributed by a power transmission mechanism 41 to drive multiple rotating cleaning bodies 28 simultaneously.

The suction port body 16 may also have three or more permeable walls 47, including a first permeable wall 47A that visibly covers the front cleaning body 28F and a second permeable wall 47B that visibly covers the rear cleaning body 28R. In this case, each permeable wall 47 is provided in each cleaning body chamber 46. The permeable member 56 may be all or a part of the three or more permeable walls 47.

Figure 9 is a control block diagram of a suction port body according to an embodiment of the present invention.

As shown in FIG. 9, the suction mouth body 16 in this embodiment drives the electric motor 29 with power supplied from a secondary battery 13 attached to the vacuum cleaner body 12.

The suction port body control unit 42 of the suction port body 16 includes a control power supply generating unit 81 that steps down the power supplied from the secondary battery 13 to output a power supply for control, a number of switching elements 83 that open and close an electric circuit 82 that supplies drive power from the secondary battery 13 to each electric motor 29, a reference voltage generating unit 85 that generates a reference voltage for pulse width modulation (PWM) control using the power supplied from the control power supply generating unit 81, and a number of PWM control units 86 that individually control the opening and closing of each switching element 83.

The switching element 83 is an element such as a bidirectional thyristor (Triode AC Switch, TRIAC), a reverse blocking three-terminal thyristor (Silicon Controlled Rectifier, SCR), or a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). The switching element 83 has a gate 83a that is connected to the PWM control unit 86. The switching element 83 changes the input (drive current) of the motor 29 in response to changes in the gate current or gate voltage.

When at least one of the multiple motors 29 is overloaded, the suction port body control unit 42 stops the overloaded motor 29 and allows the other non-overloaded motors 29 to continue operating. In other words, each PWM control unit 86 detects the value of the current flowing through the corresponding motor 29, for example, with a current sensor (not shown), and stops the motor 29 when this current value becomes excessive.

In this way, when multiple electric motors 29 are stopped or started individually depending on whether or not there is an overload, there may be a mixture of rotating cleaning bodies 28 that are stopped and rotating cleaning bodies 28 that continue to operate. Even in this case, the user can hear the driving sound of any of the rotating cleaning bodies 28.

However, in a suction port body that does not have a transparent portion and does not allow the rotating cleaning bodies 28 to be seen, the driving sound of one of the rotating cleaning bodies 28 can be heard, making it difficult for the user to determine that one of the rotating cleaning bodies 28 has stopped. In addition, suction ports are known that are equipped with a safety device (not shown) that stops the rotating cleaning bodies 28 when the suction port body 16 moves away from the surface to be cleaned f. With such a suction port body 16, even if a user senses something is wrong and picks up the suction port body 16 to check the state of the rotating cleaning bodies 28, it is difficult for the user to determine whether the stopping of the rotating cleaning bodies 28 is due to an abnormality such as an overload or due to the function of the safety device.

The suction port body 16 according to this embodiment is provided with a transparent wall 47 that visually covers the rotating cleaning body 28. This allows the user to easily visually check whether each rotating cleaning body 28 of the suction port body 16 arranged on the surface to be cleaned f is operating normally.

The suction port body control unit 42 may be configured to stop all of the electric motors 29 when at least one of the electric motors 29 is in an overload state. In this case, one PWM control unit 86 is sufficient.

In a suction port body that does not have a transparent portion and does not allow the rotating cleaning body 28 to be seen, if all of the motors 29 are stopped if at least one of the motors 29 is in an overloaded state, it is difficult for the user to determine which motors 29 are in an overloaded state and which are not overloaded, i.e., normal.

With the suction port body 16 according to this embodiment, it is easy to visually check whether any foreign matter that would impede the rotation of the rotating cleaning body 28 has entered each cleaning body chamber 46 of the suction port body 16.

As described above, the suction port body 16 and the electric vacuum cleaner 1 according to this embodiment include the suction port 27 that opens toward the bottom surface 31a, the suction chamber 45 connected to the suction port 27, a plurality of cleaning body chambers 46 that are partitioned outside the suction chamber 45 and sandwich the suction port 27, a plurality of rotating cleaning bodies 28 arranged in each cleaning body chamber 46, and an electric motor 29 that generates the driving force for each rotating cleaning body 28. Therefore, the suction port body 16 and the electric vacuum cleaner 1 do not generate an air flow around the rotating cleaning body 28 that surrounds the rotating cleaning body 28. The air sucked into the suction port 27 flows into the suction port 27 through the gap between the rotating cleaning body 28 and the surface to be cleaned f and from the side of the suction port 27. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can prevent thread-like dust sucked into the suction port 27 from getting wrapped around the rotating cleaning body 28. Additionally, the suction port body 16 and the electric vacuum cleaner 1 can prevent particulate dust sucked into the suction port 27 from entering the cleaning body chamber 46.

The suction mouth body 16 and the electric vacuum cleaner 1 according to this embodiment also include at least one transparent wall 47 that divides each cleaning body chamber 46 and visually covers at least a portion of the outer circumferential surface of each rotating cleaning body 28. Therefore, even if a foreign object, including thread-like dust, gets into the cleaning body chamber 46, the suction mouth body 16 and the electric vacuum cleaner 1 allow the user to easily visually recognize this.

Furthermore, the suction port body 16 and the electric vacuum cleaner 1 according to this embodiment are provided with a suction port 27 that opens toward the bottom surface 31a, a suction chamber 45 that is connected to the suction port 27, and a plurality of cleaning body chambers 46 that are partitioned outside the suction chamber 45 and sandwich the suction port 27. Therefore, the suction port body 16 and the electric vacuum cleaner 1 make it difficult for fine particulate dust to enter the cleaning body chamber 46, and prevent fine dust from adhering to the inner surface of the permeable wall 47, which is a part or all of the wall that partitions the cleaning body chamber 46, thereby maintaining permeability. In addition, the dust removal protrusion 66 that protrudes from the edge of the partition wall 65 and contacts the rotating cleaning body 28 prevents air containing fine dust from flowing into the cleaning body chamber 46, making it difficult for fine dust to adhere to the inner surface of the permeable wall 47, and allowing permeability to be maintained more remarkably.

Furthermore, the suction port body 16 and the electric vacuum cleaner 1 according to this embodiment are provided with a transparent member 56 that has all or part of the transparent wall 47 and also serves as part of the outer shell of the suction port body 31. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can visibly cover the multiple cleaning body chambers 46 with a small number of parts while suppressing an increase in the number of parts.

In addition, the suction port body 16 and the electric vacuum cleaner 1 according to this embodiment are provided with a plurality of rotating cleaning bodies 28 that rotate in a direction to sweep and collect dust on the surface to be cleaned f toward the suction port 27 when the suction port body 31 is placed on the surface to be cleaned f. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can more reliably capture dust on the surface to be cleaned f with the rotating cleaning body 28 located in front of the suction port 27 and the rotating cleaning body 28 located behind the suction port 27 during the process in which the suction port body 16 moves. Note that the "rotating cleaning body 28 located in front of the suction port 27 during the process in which the suction port body 16 moves" refers to the front cleaning body 28F during the process in which the suction port body 16 advances, and the rear cleaning body 28R during the process in which the suction port body 16 retreats. In addition, the "rotating cleaning body 28 located behind the suction port 27 while the suction port body 16 is moving" refers to the rear cleaning body 28R while the suction port body 16 is moving forward, and the front cleaning body 28F while the suction port body 16 is moving backward.

The suction mouth body 16 is generally placed on the surface to be cleaned f below and in front of the user when the vacuum cleaner 1 is in use. The suction mouth body 16 and vacuum cleaner 1 according to this embodiment are provided with a transparent wall 47 that extends from the part of the corresponding rotating cleaning body 28 farthest from the surface to be cleaned f in the direction of rotation of the rotating cleaning body 28 when the suction mouth main body 31 is placed on the surface to be cleaned f. Therefore, the suction mouth body 16 and vacuum cleaner 1 allow the user of the vacuum cleaner 1 to easily visually check the operating status of the rotating cleaning body 28.

The suction mouth body 16 and the electric vacuum cleaner 1 according to this embodiment have a portion closer to the surface to be cleaned f than the line connecting the portion 28Fa of the front cleaning body 28F that is farthest from the surface to be cleaned f and the portion Fb of the rear cleaning body 28R that is farthest from the surface to be cleaned f, and are equipped with an electric motor 29 that is disposed between the front cleaning body 28F and the rear cleaning body 28R. Therefore, the suction mouth body 16 and the electric vacuum cleaner 1 can minimize the height of the suction mouth main body 31. The suction mouth body 16 and the electric vacuum cleaner 1 also lower the ridge of the suction mouth body 16, preventing the transparent wall 47 from being hidden from the line of sight of the user of the electric vacuum cleaner 1 and improving the visibility of the rotating cleaning body 28.

Furthermore, in the suction mouth body 16 and electric vacuum cleaner 1 according to this embodiment, when at least one of the multiple electric motors 29 is in an overloaded state, only the overloaded electric motor 29 may be stopped, or all of the multiple electric motors 29 may be stopped. In either case, the suction mouth body 16 and electric vacuum cleaner 1 allow the user to easily visually check whether the operating status of the multiple rotating cleaning bodies 28 is normal or not by using the transparent wall 47.

Therefore, the suction mouth body 16 and the electric vacuum cleaner 1 according to this embodiment can prevent thread-like dust from wrapping around the rotating cleaning body 28, and if thread-like dust does wrap around the rotating cleaning body 28, this can be easily detected.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

1...Vacuum cleaner, 11...Handle, 12...Vacuum cleaner body, 13...Secondary battery, 15...Extension tube, 16...Suction port body, 17...Main body case, 17a...Front half, 17b...Rear half, 18...Electric blower, 19...Dust separation and collection section, 21...Main body control section, 23...Main body connection port, 26...Input section, 26a...Operation start switch, 26b...Operation stop switch, 26c...Brush switch, 27...Suction port, 28...Rotating cleaning body, 28F...Front cleaning body, 28Fa... Top of front cleaning body, 28R... rear cleaning body, 28Ra... top of rear cleaning body, 29... motor, 29F... front motor, 29R... rear motor, 29a... output shaft, 31... suction port body, 31a... bottom, 32... connection tube, 35... lower case, 36... upper case, 38... rotating connection tube, 39... swinging connection tube, 41... power transmission mechanism, 41F... front transmission mechanism, 41R... rear transmission mechanism, 42... suction port body control section, 45... suction chamber, 46... cleaning body chamber, 46F... front Cleaning body chamber, 46R... rear cleaning body chamber, 47... permeable wall, 47A... first permeable wall, 47B... second permeable wall, 47BL, 47BR... divided permeable wall, 48... air duct cover, 49... air duct narrowing body, 50... rotating, 51... motor chamber, 51F... front motor chamber, 51R... rear motor chamber, 52... machine chamber, 52F... front machine chamber, 52R... rear machine chamber, 53... control chamber, 55... window, 55F... front cleaning body window, 55R... rear cleaning body window, 55RL, 55RR... divided window, 56...Transparent member, 57...Relay pipe, 59...Brush bristles, 61...Driver gear, 62...Driven gear, 63...Belt, 65...Partition, 65F...Front partition, 65R...Rear partition, 66...Dust removal protrusion, 66F...Front protrusion, 66R...Rear protrusion, 68...Curved surface, 71...Inclined surface, 72...Guide surface, 73...Hole, 75...Protrusion, 81...Control power supply generator, 82...Electrical circuit, 83...Switching element, 83a...Gate, 85...Reference voltage generator, 86...PWM controller.

Claims (5)

a suction port body having a suction port that opens toward a bottom surface, a suction chamber connected to the suction port, and a plurality of cleaning body chambers including a first cleaning body chamber and a second cleaning body chamber that are partitioned outside the suction chamber and sandwich the suction port therebetween;
a first rotating cleaning body disposed in the first cleaning body chamber and rotatably supported by the suction port body, and a second rotating cleaning body disposed in the second cleaning body chamber and rotatably supported by the suction port body, the first rotating cleaning body being disposed in the first cleaning body chamber and rotatably supported by the suction port body, and a plurality of rotating cleaning bodies being disposed in each of the cleaning body chambers;
At least one driving source is housed in the suction port body and generates a driving force for the plurality of rotating cleaning bodies,
Each of the rotating cleaning bodies rotates in a direction to sweep and collect dust on the surface to be cleaned toward the suction port with the suction port body placed on the surface to be cleaned,
The suction port body includes an impermeable outer shell that is sandwiched between adjacent rotary cleaning bodies and spans the entire width of the suction port body, and a transparent wall that is a single member that spans the outer shell, partitions each of the cleaning body chambers, and visually covers at least a portion of the outer circumferential surface of each of the rotary cleaning bodies ;
The permeable wall is a suction port body that extends along the rotation direction of the rotary cleaning body from the part of the corresponding rotary cleaning body that is farthest from the surface to be cleaned when the suction port body is placed on the surface to be cleaned. The suction mouth body according to claim 1, wherein the at least one driving source has a portion closer to the surface to be cleaned than a line segment connecting a portion of the first rotating cleaning body farthest from the surface to be cleaned and a portion of the second rotating cleaning body farthest from the surface to be cleaned, and is disposed between the first rotating cleaning body and the second rotating cleaning body. the at least one driving source includes a plurality of driving sources each configured to individually drive each of the rotary cleaning bodies;
The suction mouth body according to claim 1 or 2, further comprising a control unit that stops all of the plurality of drive sources when at least one of the plurality of drive sources is in an overload state. The suction port body according to claim 1 , wherein the at least one permeable wall includes a plurality of divided permeable walls that are divided in a direction along a rotation center line of the at least one rotary cleaning body. The vacuum cleaner body,
an electric blower housed in the vacuum cleaner body to generate negative pressure;
A vacuum cleaner comprising: a suction mouth body according to claim 1 that is fluidly connected to the electric blower.

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