CN214906373U

CN214906373U - Suction port body and electric dust collector

Info

Publication number: CN214906373U
Application number: CN202023252439.3U
Authority: CN
Inventors: 兴津信秀; 市川洋光; 大岛拳斗
Original assignee: Toshiba Lifestyle Products and Services Corp
Current assignee: Toshiba Lifestyle Products and Services Corp
Priority date: 2020-03-02
Filing date: 2020-12-29
Publication date: 2021-11-30
Anticipated expiration: 2030-12-29
Also published as: JP6983350B2; JP2021137586A; JP2021137122A; JP7488668B2

Abstract

The utility model provides a can restrain the winding of threadlike dust to rotatory cleaning body and also can know easily when threadlike dust is wound in rotatory cleaning body suction port body and electric vacuum cleaner. The suction port body is provided with a suction port main body, a suction port opened towards the bottom surface, a suction chamber connected with the suction port, and a plurality of cleaning body chambers which are divided at the outer side of the suction chamber and comprise a front cleaning body chamber and a rear cleaning body chamber which sandwich the suction port; a plurality of rotary cleaning bodies arranged in the cleaning body chambers, wherein each rotary cleaning body comprises a front cleaning body arranged in the front cleaning body chamber and rotatably supported on the suction port main body, and a rear cleaning body arranged in the rear cleaning body chamber and rotatably supported on the suction port main body; and at least one motor housed in the suction port body and generating a driving force for the plurality of rotary cleaning elements, wherein the suction port body includes at least one penetrating wall that partitions each cleaning element chamber and visually covers at least a part of an outer peripheral surface of each rotary cleaning element.

Description

Suction port body and electric dust collector

Technical Field

The utility model discloses an embodiment relates to suction inlet body and electric vacuum cleaner.

Background

There is known a suction port body including a transparent or translucent frame body formed integrally with portions forming wall surfaces on both a bottom surface side and an upper surface side.

The conventional rotary brush of the suction port body is disposed in a suction chamber having a suction port. Therefore, in the conventional suction port body, the linear dust sucked from the suction port is easily wound around the rotary brush while being sucked into the suction chamber from the suction port.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-075187

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

A conventional rotary brush of a suction port body is disposed in a suction chamber having a suction port. Therefore, in the conventional suction port body, the linear dust sucked from the suction port is easily wound around the rotary brush while being sucked into the suction chamber from the suction port. However, since the conventional suction port body includes a transparent or translucent frame body, when linear dust is wound around the rotary brush, it can be easily understood.

Therefore, the present invention provides a suction port body and an electric vacuum cleaner that can suppress winding of linear dust around a rotary cleaning body and can easily recognize the winding of linear dust around the rotary cleaning body.

Means for solving the problems

In order to solve the above problem, an embodiment of the present invention provides a suction port body including: a suction port body having: a suction port opened toward the bottom surface; a suction chamber connected to the suction port; and a plurality of cleaning body chambers which are divided outside the suction chamber and include a first cleaning body chamber and a second cleaning body chamber which sandwich the suction port; a plurality of rotary cleaning elements including a first rotary cleaning element disposed in the first cleaning element chamber and rotatably supported by the suction port body, and a second rotary cleaning element disposed in the second cleaning element chamber and rotatably supported by the suction port body, the plurality of rotary cleaning elements being disposed in the respective cleaning element chambers; and at least one drive source that is housed in the suction port body and generates drive force for the plurality of rotary cleaning elements, wherein the suction port body includes at least one transmissive wall that partitions each cleaning element chamber and that covers at least a part of an outer peripheral surface of each rotary cleaning element in a visually observable manner. The suction port body may include a permeable member having all or a part of the permeable wall and serving as a part of a casing of the suction port body.

In a state where the suction port main body is disposed on a surface to be cleaned, the rotary cleaning bodies may be rotated in a direction in which dust on the surface to be cleaned is swept together toward the suction port.

In a state where the suction port main body is disposed on a surface to be cleaned, the at least one penetration wall may extend in a rotational direction of the rotary cleaning body from a portion of the rotary cleaning body that is farthest from the surface to be cleaned.

The at least one driving source may be disposed between the first rotary cleaning element and the second rotary cleaning element, and may have a portion closer to the surface to be cleaned than a line segment connecting a portion of the first rotary cleaning element farthest from the surface to be cleaned and a portion of the second rotary cleaning element farthest from the surface to be cleaned.

The at least one drive source may include a plurality of drive sources that individually drive the rotary cleaning bodies, and the suction port body may include 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 at least one drive source may include a plurality of drive sources that individually drive the rotary cleaning bodies, and the suction port body may include a control unit that stops the drive source in an overload state when at least one of the plurality of drive sources is in the overload state.

The at least one transmissive wall may include a plurality of divided transmissive walls divided in a direction along a rotation center line of the at least one rotary cleaning element.

In addition, the electric vacuum cleaner according to the embodiment of the present invention includes: a cleaner main body; an electric blower housed in the cleaner body and generating a negative pressure; and the suction port body is in fluid connection with the electric blower.

Effect of the utility model

According to the present invention, the user can easily determine which of the plurality of rotary cleaning elements is blocked when the foreign matter that hinders the rotation of the rotary cleaning element enters.

Drawings

Fig. 1 is a perspective view of an electric 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 front right.

Fig. 3 is a plan view of a suction port body according to an embodiment of the present invention.

Fig. 4 is a plan view of a suction port body according to an embodiment of the present invention.

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

Fig. 6 is a perspective view of the suction port body according to the embodiment of the present invention as viewed from below.

Fig. 7 is a longitudinal sectional view of the suction port body according to the embodiment of the present invention.

Fig. 8 is a longitudinal sectional view of the suction port body according to the embodiment of the present invention.

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

Description of the reference numerals

1 electric vacuum cleaner, 11 handle, 12 main body of vacuum cleaner, 13 secondary battery, 15 extension tube, 16 suction inlet body, 17 main body case, 17a front half, 17b rear half, 18 electric blower, 19 dust separating and collecting part, 21 main body control part, 23 main body connecting port, 26 input part, 26a operation start switch, 26b operation stop switch, 26c brush switch, 27 suction inlet, 28 rotary cleaning body, 28F front cleaning body, 28Fa front cleaning body top, 28R rear cleaning body, 28Ra rear cleaning body top, 29 motor, 29F front motor, 29R rear motor, 29a output shaft, 31 suction inlet body, 31a bottom surface, 32 connecting tube, 35 lower case, 36 upper case, 38 rotary connecting tube, 39 swing connecting tube, 41 … power transmission mechanism, 41F … front transmission mechanism, 41R … rear transmission mechanism, 42 … suction inlet body control part, 45 … suction chamber, 46 … cleaning body chamber, 46F … front cleaning body chamber, 46R … rear cleaning body chamber, 47 … transmission wall, 47a … first transmission wall, 47B … second transmission wall, 47BL, 47BR … split transmission wall, 48 … air passage cover, 49 … air passage narrow body, 50 … rolling element, 51 … motor chamber, 51F … front motor chamber, 51R … rear motor chamber, 52 … mechanical chamber, 52F … front mechanical chamber, 52R … rear mechanical chamber, 53 … control chamber, 55 … window part, 55F … front cleaning body window, 55R … rear body window, 55RL, 55 … window, … split transmission gear …, … driven gear …, … partition, … driven gear drive gear, … drive gear, …, and the like, 65F … front partition, 65R … rear partition, 66 … dust removing projection, 66F … front projection, 66R … rear projection, 68 … curved surface, 71 … inclined surface, 72 … guide surface, 73 … hole, 75 … projection, 81 … control power generation part, 82 … circuit, 83 … switching element, 83a … grid, 85 … reference voltage generation part, 86 … PWM control part.

Detailed Description

Embodiments of a suction port body and an electric vacuum cleaner according to the present invention will be described with reference to fig. 1 to 9.

As shown in fig. 1, the electric vacuum cleaner 1 of the present embodiment is, for example, a stick type, and the electric vacuum cleaner 1 includes: a cleaner main body 12 having a handle 11 and capable of being handled by hand; a secondary battery 13 (also referred to as a battery, a rechargeable battery, and a rechargeable battery) that is attachable to and detachable from the cleaner body 12; an extension pipe 15 connected to the cleaner body 12; and a suction port body 16 connected to the extension pipe 15.

The electric vacuum cleaner 1 may be of a horizontal type, a vertical type, or a hand-held type. The electric vacuum cleaner 1 may be a cordless type having the secondary battery 13 as a power source, or a wired type in which electric power is obtained from a commercial ac power source via a power line.

The cleaner body 12 includes: a main body case 17 having a handle 11; an electric blower 18 housed in the main body case 17 and generating suction negative pressure; a dust separating and collecting part 19 detachably provided in the main body case 17; and a main body control unit 21 that mainly controls the electric blower 18.

The cleaner body 12 drives the electric blower 18 by the electric power stored in the secondary battery 13, and causes a negative pressure generated by the driving of the electric blower 18 to act on the extension pipe 15. The electric vacuum cleaner 1 sucks air containing dust (hereinafter, referred to as "dust-containing air") from a floor surface through the suction port body 16 and the extension pipe 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 includes: a cylindrical front half portion 17a disposed on an extension line of the extension pipe 15 in a side view; and a rear half 17b bent from the front half 17a and gradually distant from the extension line of the extension pipe 15. A dust separating and collecting part 19 is provided above the front half 17a of the main body case 17. The rear half 17b of the main body casing 17 extends rearward in a use state (fig. 2) in which the suction port body 16 is disposed on the floor.

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

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

The handle 11 is integrally provided to the main body case 17. The handle 11 is a portion to be held by a hand of a user for cleaning a floor surface with the electric vacuum cleaner 1. The handle 11 is arched toward the rear end of the main body case 17 from the vicinity of the rear end of the dust separating and collecting section 19. The handle 11 is arranged to intersect an extension line of the center line of the extension pipe 15.

An input unit 26 is provided near the handle 11, and the input unit 26 is disposed within a range in which a user holding the handle 11 moves his or her fingers.

The input unit 26 includes: an operation start switch 26a that receives an operation start operation of the electric blower 18; an operation stop switch 26b for receiving an operation stop operation of the electric blower 18; and a brush switch 26c that receives the start operation and stop operation of 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 an operation mode of the electric blower 18 by operating the input unit 26. The operation start switch 26a also functions as a switch for switching the operation mode during operation of the electric blower 18. In this case, the main body control part 21 switches the operation mode in the order of strong → medium → weak → … … each time an operation signal is received from the operation start switch 26 a. The input unit 26 may include 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 26 a.

The dust separating and collecting part 19 is disposed on the upper surface side of the cleaner body 12 and is detachable from the cleaner body 12. The dust separating and collecting section 19 separates, collects, and accumulates dust from the dust-containing air flowing into the cleaner body 12, and sends the clean air from which the dust has been removed to the electric blower 18. The dust separation/collection section 19 may be a centrifugal separation system for centrifugally separating dust from air by utilizing the difference in mass between the dust and the air sucked by the electric vacuum cleaner 1, or a filtration separation system having a filter for filtering out dust from air containing dust.

The electric blower 18 sucks air from the dust separation and collection part 19 to generate a negative pressure (suction negative pressure).

The main body control unit 21 includes a storage device for storing a microprocessor and various operation programs and parameters executed by the microprocessor. The storage device stores various settings (arguments) relating to a plurality of operation modes set in advance. A plurality of operating modes are associated with the output of the electric blower 18. Different input values (an input value of the electric blower 18, a target value of the current flowing through the electric blower 18) are set in each operation mode. Each operation mode is associated with an operation input received by the input unit 26. The main body control unit 21 selects an arbitrary operation mode corresponding to an operation input to the input unit 26 from a plurality of operation modes set in advance. The main body control unit 21 reads the setting of the selected operation mode from the storage unit, and operates the electric blower 18 in accordance with the read setting of the operation mode.

Secondary battery 13 stores electric power consumed by electric blower 18 and 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 electric vacuum cleaner 1 may or may not use the plurality of secondary batteries 13 instead as appropriate. When the charging rate of the secondary battery 13 detachably attached to the electric vacuum cleaner 1 decreases, the operation of the electric vacuum cleaner 1 can be continued by replacing the secondary battery 13 with the charged secondary battery 13.

The extension pipe 15 and the suction port body 16 suck dust on the floor surface together with air by a negative pressure applied from the electric blower 18 and guide the dust to the cleaner main body 12.

The extension pipe 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/collection part 19. The extension pipe 15 has a length substantially reaching the floor surface in a state where the user holds the handle 11 of the cleaner body 12. A joint structure that is detachable from the main body connection port 23 of the cleaner main body 12 is provided at one end of the extension pipe 15. The other end of the extension pipe 15 is provided with a joint structure for detachably attaching the suction port body 16 of the cleaner body 12. The extension pipe 15 may be retractable or not.

The suction port body 16 is capable of running or sliding on a floor surface such as a wooden floor or a carpet, and has a suction port 27 on a bottom surface facing the floor surface in a running or sliding state. The suction port body 16 includes a rotatable cleaning element 28 that is rotatable, and a motor 29 as a drive source that drives the rotatable cleaning element 28. A joint structure is provided at one end of the suction port body 16 to be detachable from the other end of the extension pipe 15. The suction port body 16 is fluidly connected to a suction side of an electric blower 18 via an extension pipe 15. The suction port body 16, the extension pipe 15, and the dust separation/collection part 19 are a suction air passage extending from the electric blower 18 to the suction port 27.

When the operation start switch 26a is operated, the electric vacuum cleaner 1 causes the electric blower 18 to start. For example, when the operation start switch 26a is operated in a state where the electric blower 18 is stopped, the electric vacuum cleaner 1 starts the electric blower 18 in the strong operation mode first, changes the operation mode of the electric blower 18 to the medium operation mode when the operation start switch 26a is operated again, changes the operation mode of the electric blower 18 to the weak operation mode when the operation start switch 26a is operated for the third time, and similarly repeats the following. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance. The input value 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 activated electric blower 18 sucks air from the dust separation and collection part 19 to make the inside of the dust separation and collection part 19 negative pressure.

The negative pressure in the dust separating and collecting section 19 passes through the main body connection port 23, the extension pipe 15, and the suction port body 16 in this order and acts on the suction port 27. The vacuum cleaner 1 sucks dust on a surface to be cleaned together with air by negative pressure acting on the suction port 27, and cleans the surface to be cleaned. The dust separating and collecting section 19 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1, and sends the air separated from the dust-containing air to the electric blower 18. The electric blower 18 discharges air sucked from the dust separation/collection part 19 to the outside of the cleaner body 12.

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

Fig. 2 is a perspective view of a suction port body according to an embodiment of the present invention, shown from the front right.

As shown in fig. 2, the suction port body 16 of the present embodiment includes a substantially cubic suction port main body 31 and a connection pipe 32 provided at the rear of the suction port main body 31.

The front and rear, left and right, and up and down of the suction port body 16 will be described with reference to a user of the electric vacuum cleaner 1. The direction of the solid arrow X in fig. 2 is the forward or forward direction of the inlet body 16, and the opposite direction is the backward or rearward direction. The direction of the solid arrow Y in fig. 2 is the left of the suction port body 16, and the opposite direction is the right. The direction of the solid arrow Z in fig. 2 is upward of the suction port body 16, and the opposite direction is downward.

The shape of the suction port body 31 in plan view is a rectangle having short sides in the front-rear direction and long sides in the left-right direction. That is, the width dimension, which is the dimension in the left-right direction of the suction port body 31, is larger than the depth dimension, which is the dimension in the front-rear direction of the suction port body 31. The suction port body 31 includes a lower casing 35 and an upper casing 36 covering the lower casing 35.

The connection pipe 32 is provided at the rear part of the suction port main body 31 and at a substantially central part in the width direction. The connection pipe 32 includes a rotary connection pipe 38 rotatable with respect to the suction port body 31, and a swing connection pipe 39 swingable with respect to the rotary connection pipe 38.

The rotary connection pipe 38 rotates about a center line (a line segment coincident with the X axis or a line segment parallel to the X axis) extending in the front-rear direction of the suction port body 16. The center line divides the suction port body 31 into left and right portions.

The swing connection pipe 39 swings about a line segment orthogonal to the rotation center line of the rotation connection pipe 38 or a line segment parallel to the line segment. The free end of the swing connection pipe 39 is a joint that is detachable from the free end of the extension pipe 15.

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

Fig. 7 is a longitudinal sectional view of the suction port body according to the embodiment of the present invention taken along line VII-VII in fig. 3.

Fig. 8 is a longitudinal sectional view of the suction port body according to the embodiment of the present invention taken along line VIII-VIII in fig. 3.

In fig. 4, the upper case 36 is detached.

As shown in fig. 3 to 7, the suction port body 16 of the present embodiment includes: a suction port body 31; a rotary cleaning body 28 rotatably supported by the suction port body 31; a motor 29 as a driving source which is accommodated in the suction port body 31 and generates a rotational driving force for rotating the cleaning element 28; a power transmission mechanism 41 for transmitting a driving force from the motor 29 to the rotary cleaning element 28; and a suction port body control unit 42 that controls the operation of the motor 29.

The suction port main body 31 has a suction port 27 opened toward the bottom surface 31a, a suction chamber 45 connected to the suction port 27, and a cleaning body chamber 46 in which the rotary cleaning body 28 is accommodated.

The suction port body 31 includes a transmissive wall 47, and the transmissive wall 47 defines a part of the cleaning element chamber 46 and visually covers at least a part of the outer peripheral surface of the rotary cleaning element 28.

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

The suction chamber 45 is divided by: a lower case 35; an air path cover 48 housed inside the upper case 36 and covering a part of the lower case 35; and an air passage narrowing body 49 that narrows the suction port 27, which is wide in the left-right direction of the suction port main body 31, toward the center. In other words, the lower casing 35, the air passage cover 48, and the air passage narrowing member 49 cooperatively define the suction chamber 45.

A plurality of rollers 50 that are grounded to the surface f to be cleaned and support the suction port main body 31 are provided on the bottom surface 31a of the suction port main body 31. The plurality of rollers 50 include rollers 50 disposed at the left and right end portions of the suction port body 31, and rollers 50 disposed at the rear center portion of the suction port body 31.

A space is defined between the lower casing 35 and the upper casing 36 of the suction port body 31. The space includes a motor chamber 51 for housing the motor 29, a machine chamber 52 for housing the power transmission mechanism 41, and a control chamber 53 for housing the suction port body control unit 42. These motor room 51, machine room 52, and control room 53 may be connected or disconnected.

The control room 53 is disposed in the front, rear, left, and right center portions of the suction port body 31 in plan view.

The suction port body 31 is provided with a pair of rotary cleaning bodies 28 so as to sandwich the suction port 27 from the front and rear of the suction port body 16.

The motor 29 and the power transmission mechanism 41 are also paired and individually associated with each rotary cleaning element 28. The pair of motors 29 includes a motor 29 provided at one end in the width direction of the suction port body 31 and a motor 29 provided at the other end in the width direction of the suction port body 31. The pair of motors 29 are preferably disposed at positions substantially separated by the same distance from a center line that divides the suction port body 31 into left and right portions. The pair of power transmission mechanisms 41 includes the power transmission mechanism 41 provided at one end portion in the width direction of the suction port body 31, and the power transmission mechanism 41 provided at the other end portion in the width direction of the suction port body 31. The pair of power transmission mechanisms 41 are preferably disposed at positions substantially separated by the same distance from the center line that divides the suction port body 31 into left and right portions.

The rotary cleaning element 28 located on the front side of the suction port 27 is referred to as a front cleaning element 28F (first rotary cleaning element). The cleaning element chamber 46 in which the front cleaning element 28F is housed is referred to as a front cleaning element chamber 46F (first rotary cleaning element chamber). The motor 29 corresponding to the front cleaning element 28F is referred to as a front motor 29F, and the power transmission mechanism 41 corresponding to the front cleaning element 28F is referred to as a front transmission mechanism 41F. The motor chamber 51 housing the front motor 29F is referred to as a front motor chamber 51F, and the machine chamber 52 housing the front transmission mechanism 41F is referred to as a front machine chamber 52F.

The rotary cleaning element 28 on the rear side of the suction port 27 is referred to as a rear cleaning element 28R (second rotary cleaning element). The cleaning element chamber 46 that houses the rear cleaning element 28R is referred to as a rear cleaning element chamber 46R (second rotary cleaning element chamber). The motor 29 corresponding to the rear cleaning element 28R is referred to as a rear motor 29R, and the power transmission mechanism 41 corresponding to the rear cleaning element 28R is referred to as a rear transmission mechanism 41R. The motor chamber 51 housing the rear motor 29R is referred to as a rear motor chamber 51R, and the machine chamber 52 housing the rear transmission mechanism 41R is referred to as a rear machine chamber 52R.

The front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R are arranged in the traveling direction of the suction port body 16. In other words, the front cleaning element 28F, the suction port 27, and the rear cleaning element 28R are aligned in the traveling direction of the suction port body 16. The front cleaning element 28F, the suction port 27, and the rear cleaning element 28R are arranged from the front side to the rear side of the suction port body 16. The front cleaning element 28F, the air passage narrowing element 49, and the rear cleaning element 28R are arranged in the traveling direction 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 dimension.

The motor 29 rotates the rotary cleaning element 28 in a direction to sweep dust on the dust suction surface f toward the suction port 27 in a state where the suction port main body 31 is disposed on the dust suction surface f. That is, the front motor 29F rotates the front cleaning element 28F in the forward direction Rf of the auxiliary inlet body 16, and the rear motor 29R rotates the rear cleaning element 28R in the backward direction Rr of the auxiliary inlet body 16.

The cleaning element chambers 46 are partially partitioned by the walls 47, and at least a part of the outer peripheral surface of each rotary cleaning element 28 is covered with a visible cover. Therefore, the suction port body 31 has at least one window portion 55 closed by the transmission wall 47. The window 55 may be provided in each of the cleaning body chambers 46, or may be provided across a plurality of adjacent cleaning body chambers 46. The window portion 55 of the present embodiment includes a front cleaning element window 55F provided in the upper case 36 so that the front cleaning element 28F can be visually observed, and a rear cleaning element window 55R provided in the lower case 35 so that the rear cleaning element 28R can be visually observed.

The front cleaning element window 55F is positioned above the front cleaning element 28F and is opened over the entire length of the front cleaning element 28F.

The rear cleaning element window 55R is positioned above the rear cleaning element 28R and is opened in two places on the right and left of the rear cleaning element 28R so as to be separated from the suction chamber 45 reaching the connection pipe 32 through the upper side of the rear cleaning element chamber 46R. That is, the rear cleaning element window 55R includes a plurality of divided windows 55RL and 55RR divided in a direction along the rotation center line of the rear cleaning element 28R.

The transmission wall 47 includes a first transmission wall 47A that blocks the front cleaning element window 55F and covers the front cleaning element window 55F in a visible manner, and a second transmission wall 47B that blocks the rear cleaning element window 55R and covers the rear cleaning element window 55R in a visible manner. The second transmissive wall 47B may be divided in a direction along the rotation center line of the rear cleaning element 28R. That is, the second transmission wall 47B may include a plurality of divided transmission walls 47BL, 47BR divided in a direction along the rotation center line of the rear cleaning element 28R. In other words, the at least one transmissive wall 47 includes a plurality of divided transmissive walls 47BL, 47BR divided in a direction along the rotation center line of the at least one rotary cleaning element 28.

The first penetrating wall 47A is fixed to the upper case 36. The first penetration wall 47A extends in the rotation direction Rf of the front cleaning element 28F from the top 28Fa, which is the farthest position from the surface F to be cleaned of the front cleaning element 28F, in a state where the suction port main body 31 is disposed on the surface F to be cleaned. The second transmission wall 47B is fixed to the lower case 35. The second transmission wall 47B extends along the rotation direction Rr of the rear cleaning element 28R from the apex 28Ra, which is the farthest position of the rear cleaning element 28R from the surface f to be cleaned, in a state where the suction port main body 31 is disposed on the surface f to be cleaned. In other words, the transmission wall 47 extends from the portions 28Fa and 28Ra of the corresponding rotary cleaning element 28 farthest from the surface f to be cleaned in the rotation direction of the rotary cleaning element 28 in the state where the suction port main body 31 is disposed on the surface f to be cleaned.

The first penetration wall 47A covers the upper side of the front cleaning element 28F, and defines an opening edge on the front side of the front cleaning element chamber 46F (an opening edge farthest from the suction port 27). The first transmission wall 47A is a transmission member 56 that also serves as a part of the casing of the suction port body 31. That is, the lower casing 35, the upper casing 36, and the transmission member 56 cooperatively serve as a housing of the suction port body 31. The transmission member 56 may integrate the second transmission wall 47B in addition to the first transmission wall 47A. In other words, the permeable member 56 may be all or a part of the plurality of permeable walls 47.

The transmissive member 56 covers the upper case 36, extends above the rear cleaning element chamber 46R, and is connected to the lower case 35 at a position rearward of the rear cleaning element window 55R. That is, the transmissive member 56 covers the rear cleaning element window 55R in a double manner in cooperation with the second transmissive wall 47B. The transparent member 56 is a transparent or translucent resin molded or formed product.

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 element 28F and the rear cleaning element 28R. The suction port 27 faces the surface F to be cleaned without being blocked by the front cleaning element 28F and the rear cleaning element 28R, and has a straight surface facing the surface F to be cleaned.

The suction chamber 45 is bent rearward of the suction port main body 31 along the lower casing 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 for supporting the connection pipe 32. Relay duct 57 is integrally formed with air path cover 48.

The front cleaning body chamber 46F is partitioned by the upper casing 36, the lower casing 35, the first penetration wall 47A of the penetration wall 47, and the air passage narrowing body 49. In other words, the upper casing 36, the lower casing 35, the first penetration wall 47A of the penetration wall 47, and the air passage narrowing member 49 cooperatively define the front cleaning member chamber 46F. The front cleaning body chamber 46F can be visually observed from the outside of the suction port main body 31 through the first penetration wall 47A.

The rear cleaning body chamber 46R is partitioned by the lower casing 35, the second transmission wall 47B of the transmission wall 47, and the air passage narrowing body 49. In other words, the lower casing 35, the second transmission wall 47B of the transmission wall 47, and the air passage narrowing member 49 cooperatively define the rear cleaning chamber 46R. The rear cleaning body chamber 46R can be visually observed from the outside of the suction port main body 31 through the second transmission wall 47B.

The machine chamber 52 is defined at each of the left and right ends of the suction port body 31, and is a portion where the front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R do not exist. The machine chamber 52 accommodates the shaft end of the front cleaning element 28F and the shaft end of the rear cleaning element 28R. A rolling member 50 is provided at the bottom of the machine room 52.

The front machine chamber 52F is defined at the left end of the suction port body 31, and is a portion where the front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R do not exist. The front machine chamber 52F accommodates the shaft end of the front cleaning element 28F and the shaft end of the rear cleaning element 28R.

The rear machine chamber 52R is defined at the right end of the suction port body 31, and is a portion where the front cleaning body chamber 46F, the suction port 27, and the rear cleaning body chamber 46R do not exist. The rear machine chamber 52R accommodates the shaft end of the front cleaning element 28F and the shaft end of the rear cleaning element 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 line of the front cleaning element 28F, the rotation center line of the rear cleaning element 28R, and the rotation center line of the motor 29 are located at the vertices of a triangle. The motor chamber 51 houses the cylindrical motor 29 at a position as close as possible to the front cleaning body chamber 46F and the rear cleaning body chamber 46R. That is, the bottom of motor 29 is disposed below top 28Fa of front cleaning element 28F and top 28Ra of rear cleaning element 28R. In other words, the motor 29 is disposed between the front cleaning element 28F and the rear cleaning element 28R, and has a portion closer to the surface F to be cleaned than a line segment connecting a portion 28Fa of the front cleaning element 28F, which is farthest from the surface F to be cleaned, and a portion 28Ra of the rear cleaning element 28R, which is farthest from the surface F to be cleaned. Even when the motor 29 is disposed above the rotary cleaning element 28, the height of the suction port body 31 is kept lower than the sum of the height (diameter) of the rotary cleaning element 28 and the height (diameter) of the motor 29.

The front motor chamber 51F is disposed on the left side of the suction port body 31, and is disposed in parallel with the front machine chamber 52F.

The rear motor chamber 51R is disposed on the right side of the suction port body 31, and is disposed in parallel with the rear machine chamber 52R.

Further, if the front motor room 51F and the front machine room 52F are provided in parallel, the front motor room 51F and the front machine room 52F may be disposed on the right side of the suction port body 31. In this case, the front transmission mechanism 41F is also disposed 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 disposed on the left side of the suction port body 31.

The rotation center line of the rotary cleaning element 28 is oriented in the width direction of the suction port body 31. The rotary cleaning element 28 has bristles 59 extending radially. The brush 59 is a plurality of brushes extending in the longitudinal direction of the rotary cleaning element 28, and is arranged in the circumferential direction of the rotary cleaning element 28.

The motor 29 includes an output shaft 29a protruding into the machine chamber 52. The rotation center line of the output shaft 29a is substantially parallel to the rotation center line of the rotary cleaning element 28. The suction port body 16 may include a drive source for rotating the cleaning body 28 instead of the motor 29, for example, a fan or a turbine that is rotated by sucking air in negative pressure.

The power transmission mechanism 41 includes: a drive gear 61 fixed to an output shaft 29a of the motor 29; a driven gear 62 provided in the rotary cleaning element 28; and an endless belt 63 wound around the drive gear 61 and the driven gear 62 and transmitting a driving force from the motor 29 to the rotary cleaning element 28.

The suction port body control unit 42 operates the motor 29 by the electric power supplied from the cleaner main body 12 through the extension pipe 15.

The air passage narrowing body 49 includes: 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 projection 66 protruding from an edge of the partition wall 65 and contacting the rotary cleaning element 28.

The partition wall 65 that divides the suction chamber 45 and the front cleaning body chamber 46F is referred to as a front partition wall 65F (first partition wall). The front partition wall 65F defines the front edge of the suction port 27. The dust removal projection 66 that projects from the edge of the front partition wall 65F and contacts the front cleaning element 28F is referred to as a front projection 66F (first dust removal projection).

The partition wall 65 that partitions the suction chamber 45 and the rear cleaning body chamber 46R is referred to as a rear partition wall 65R (second partition wall). The rear partition wall 65R defines the rear edge of the suction port 27. The dust removing projection 66 that projects from the edge of the rear partition wall 65R and contacts the rear cleaning element 28R is referred to as a rear projection 66R (second dust removing projection).

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

The dust swept up from the dust suction surface F by the rotation of the front cleaning element 28F is directed toward the curved surface 68 of the suction chamber 45. Then, the curved surface 68 smoothly guides the flying dust toward the back side (downstream side) of the suction chamber 45.

Further, a part of the inner surface of the suction chamber 45 (here, the inner surface of each of the left and right sides of the suction chamber 45, and 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 wall 65 and narrows the air passage width toward the back side (downstream side) of the suction chamber 45. Inclined surface 71 is connected to front partition wall 65F and rear partition wall 65R. That is, inclined surface 71 is bridged between front partition wall 65F and rear partition wall 65R. The inclined surfaces 71 are provided in a pair on the left and right of the air passage narrowing body 49. The left and right inclined surfaces 71 are inclined so as to be spaced apart from the end portions corresponding to the air-passage narrowing bodies 49 and to be closer to the central portion and to enter the suction chamber 45 on the back side. The left and right inclined surfaces 71 do not merge but separate. The gap between the left and right inclined surfaces 71 is connected to the suction chamber 45 on the back side of the inclined surfaces 71. The inclined surface 71 smoothly guides air sucked from the suction port 27, which is elongated and expanded in the width direction of the suction port body 16, to the back side of the suction chamber 45 connected to the connection pipe 32.

The inclined surface 71 has a stepped shape including a guide surface 72 facing the partition wall 65 when viewed in a longitudinal cross section of the suction port body 31. The guide surface 72 faces the front partition wall 65F. The stepped portion may be a single layer as shown in fig. 7, or may be a plurality of layers. The stepped shape preferably reaches the entire width of the inclined surface 71. The shape of the bottom of each layer may be planar or concave. The guide surface 72 is preferably parallel to the front partition wall 65F. The guide surface 72 captures dust swept up by the front cleaning element 28F and guides the dust to the back side of the suction chamber 45. Further, the intermediate portion of the guide surface 72 is sandwiched between the front cleaning element 28F and the surface F to be cleaned, and guides the end portion of the linear dust toward the back side of the suction chamber 45, so that the linear dust floating toward the suction port 27 at one or both end portions is prevented from passing over the rear partition wall 65R and approaching the rear cleaning element 28R side.

The dust removing projection 66 enters the inside of the rotation locus of the rotary cleaning body 28. The dust removing projection 66 flicks the brush 59 of the rotary cleaning element 28 in accordance with the rotation of the rotary cleaning element 28. At this time, the dust removing projection 66 ejects the linear dust adhering to the rotary cleaning element 28 and attempting to enter the cleaning element chamber 46 from the brush 59 and separates the dust from the rotary cleaning element 28. The dust suction port 27 is easily sucked in a linear shape after being detached from the rotary cleaning element 28. That is, the dust removing projection 66 can prevent linear dust adhering to the rotary cleaning element 28 from entering the cleaning element chamber 46.

The dust removal protrusion 66 is preferably provided over the entire width of the partition wall 65. The dust removing protrusions 66 may be formed so as to be able to flex the brush 59 of the rotary cleaning element 28. Therefore, the dust removing protrusions 66 may be comb-shaped as shown in fig. 5 and 6, or may be plate-shaped with the same protrusion length over the entire width. Since the rotational resistance of the rotating cleaning body 28 is increased by the contact of the dust removing protrusion 66, the shape of the dust removing protrusion 66 can be appropriately set according to the output of the motor 29.

When the ground surface of the suction port body 16 is set as a reference surface, the front projection 66F is substantially parallel to the reference surface. The rear projection 66R projects obliquely in a direction away from the reference surface.

Generally, the user advances the suction port body 16 to bring the suction port body 16 into the surface f to be cleaned on which dust is not to be cleaned. At this time, the linear dust on the dust suction surface f moves rearward from the front of the suction port body 16. The utility model discloses a discovery, through making the front projection 66F substantially parallel to the reference plane, on the other hand make the back projection 66R incline to the direction of keeping away from the reference plane, make the linear dust difficult to get into two sides of front cleaning body room 46F and back cleaning body room 46R.

The rear partition wall 65R has a hole 73 connecting the suction chamber 45 and the rear cleaning body chamber 46R. The hole 73 is disposed in a range sandwiched by the left and right inclined surfaces 71. The number of the holes 73 may be plural. The holes 73 discharge the dust that has entered the rear cleaning body chamber 46R to the suction chamber 45 so as not to remain in the rear cleaning body chamber 46R.

The dust entering the front cleaning element chamber 46F is discharged forward of the inlet 16 as the front cleaning element 28F rotates. That is, the dust entering the front cleaning body chamber 46F has more opportunity to be sucked into the suction port 27 than the dust entering the rear cleaning body chamber 46R while the suction port body 16 is moving forward. Therefore, the front partition wall 65F does not have to have the hole 73 like the rear partition wall 65R.

Further, when dust enters the cleaning body chamber 46, the user can visually observe the dust through the wall 47. That is, the user can visually observe whether or not dust enters the front cleaning body chamber 46F through the first transmissive wall 47A, and can visually observe whether or not dust enters the rear cleaning body chamber 46R through the second transmissive wall 47B.

A projection 75 having a vertical sectional shape with an acute angle toward the rear cleaning element 28R is provided at a part of the opening edge of the rear cleaning element chamber 46R and at a position facing the rear projection 66R. The protruding portion 75 is provided at a portion on the rear side of the opening edge of the rear cleaning body chamber 46R. When the suction port body 16 is used for 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 this case, the protrusion 75 scrapes the dust-suction surface f like a blade of a bulldozer, and scrapes off dust entering the carpet.

The projection 75 preferably extends over the full width of the rear sweeper chamber 46R. In the case where the suction port body 16 is used for a hard surface f to be cleaned such as a floor, the protruding portion 75 may protrude below the suction port body 31 from the bottom surface of the suction port body 31 in a range not in contact with the surface f to be cleaned.

The suction port body 16 may include three or more rotary cleaning elements 28 including a front cleaning element 28F and a rear cleaning element 28R sandwiching the suction port 27. That is, the suction port body 16 may include: three or more cleaning body chambers 46 divided outside the suction chamber 45 and including a front cleaning body chamber 46F and a rear cleaning body chamber 46R sandwiching the suction port 27; and three or more rotary cleaning elements 28 including the front cleaning element 28F and the rear cleaning element 28R and disposed in the cleaning element chambers 46. In this case, the cleaning body chambers 46 and the rotary cleaning bodies 28 are preferably provided in the same number. The number of the motors 29, the motor chambers 51, the power transmission mechanism 41, and the machine chamber 52 may be the same as the number of the cleaning element chambers 46 and the number of the rotary cleaning elements 28, and may be smaller than the number of the cleaning element chambers 46 and the number of the rotary cleaning elements 28 as long as the plurality of rotary cleaning elements 28 can be driven simultaneously. For example, the driving force of one motor 29 may be distributed by the power transmission mechanism 41 to simultaneously drive the plurality of rotary cleaning elements 28.

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

As shown in fig. 9, the suction port body 16 of the present embodiment drives the motor 29 by electric power supplied from the secondary battery 13 attached to the cleaner main body 12.

The suction port body control unit 42 of the suction port body 16 further includes: a control power generation unit 81 that steps down the power supplied from the secondary battery 13 and outputs a control power; a plurality of switching elements 83 for opening and closing an electric circuit 82 for supplying driving power from the secondary battery 13 to each motor 29; a reference voltage generating unit 85 that generates a reference voltage for Pulse Width Modulation (PWM) control by the power supplied from the control power generating unit 81; and a plurality of PWM control units 86 that individually control the switching elements 83 to be opened and closed.

The switching element 83 is a bidirectional Thyristor (TRIAC), a reverse blocking 3-terminal Silicon Controlled Rectifier (SCR), a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), or the like. The switching element 83 includes a gate 83a connected to the PWM control unit 86. The switching element 83 changes the input (drive current) of the motor 29 in accordance with a change in the gate current or the gate voltage.

When at least one of the plurality of motors 29 is in an overload state, the suction port body control unit 42 stops the motor 29 in the overload state and continues the operation of the other motors 29 not in the overload state. That is, each PWM control unit 86 senses a current value flowing through the corresponding motor 29 by, for example, a current sensor (not shown), and stops the motor 29 when the current value becomes excessive.

In this way, when the plurality of motors 29 are individually stopped or operated depending on whether or not the state is an overload state, the rotating cleaning element 28 that has been stopped and the rotating cleaning element 28 that has continued to be operated may be mixed. In this case, the user can also hear the driving sound of a certain rotary cleaning element 28.

However, in the suction port body having no transparent portion in which the rotary cleaning element 28 cannot be visually confirmed, the user excessively hears the driving sound of a certain rotary cleaning element 28 and cannot easily recognize that a part of the rotary cleaning element 28 has stopped. Further, there is known a suction port body provided with a safety device (not shown) for stopping the rotary cleaning element 28 when the suction port body 16 is separated from the surface f to be cleaned. In such a suction port body 16, even if the user feels some abnormality and holds the suction port body 16 in his hand to confirm that the rotary cleaning body 28 is rotated, it is difficult to distinguish whether the stop of the rotary cleaning body 28 is caused by an abnormality such as overload or by the function of the safety device.

Therefore, the suction port body 16 of the present embodiment includes the transmissive wall 47 covering the rotary cleaning element 28 so as to be visible. Therefore, the user can easily visually confirm whether or not the rotary cleaning elements 28 of the suction port bodies 16 arranged on the dust suction surface f are normally driven.

Further, the suction port body control unit 42 may stop all the motors 29 when at least one of the plurality of motors 29 becomes an overload state. In this case, there may be only one PWM control unit 86.

In the case where all the motors 29 are stopped when at least one motor 29 is in an overload state in the suction port body having no transparent portion in which the cleaning element 28 is rotated cannot be visually confirmed, it is difficult for the user to distinguish which motor 29 is in an overload state and which motor 29 is in a normal state, i.e., is in a non-overload state.

In the suction port body 16 of the present embodiment, it is possible to easily visually confirm whether or not foreign matter that inhibits the rotation of the rotary cleaning element 28 has entered the cleaning element chamber 46 of each suction port body 16.

As described above, the suction port body 16 and the electric vacuum cleaner 1 according to the present embodiment include: a suction port 27 opened toward the bottom surface 31 a; a suction chamber 45 connected to the suction port 27; a plurality of cleaning body chambers 46 partitioned outside the suction chamber 45 and sandwiching the suction port 27 therebetween; a plurality of rotary cleaning elements 28 disposed in the cleaning element chambers 46; and a motor 29 that generates a driving force for rotating each cleaning element 28. Therefore, the flow of air surrounding the rotary cleaning element 28 around the rotary cleaning element 28 does not occur in the suction port body 16 and the electric vacuum cleaner 1. The air sucked into the suction port 27 flows into the suction port 27 from the gap between the rotary cleaning element 28 and the surface f to be cleaned and the side of the suction port 27. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can prevent linear dust sucked into the suction port 27 from being wound around the rotary cleaning element 28. Further, the suction port body 16 and the electric vacuum cleaner 1 can prevent the particulate fine dust sucked into the suction port 27 from entering the cleaning body chamber 46.

The suction port body 16 and the vacuum cleaner 1 of the present embodiment include at least one transmissive wall 47 that partitions each cleaning body chamber 46 and covers at least a part of the outer peripheral surface of each rotary cleaning body 28 in a visible manner. Therefore, even in the suction port body 16 and the electric vacuum cleaner 1, if foreign matter including linear dust enters the cleaning body chamber 46, the user can easily visually confirm the foreign matter.

The suction port body 16 and the electric vacuum cleaner 1 according to the present embodiment include: a suction port 27 opened toward the bottom surface 31 a; a suction chamber 45 connected to the suction port 27; and a plurality of cleaning body chambers 46 which are partitioned outside the suction chamber 45 and sandwich the suction port 27. Therefore, in the suction port body 16 and the electric vacuum cleaner 1, fine particulate fine dust is less likely to enter the cleaning body chamber 46, and the fine dust is prevented from adhering to a part or the whole of the wall defining the cleaning body chamber 46, that is, the inner surface of the penetration wall 47, and permeability can be maintained. Further, the dust removal projection 66 projecting from the edge of the partition wall 65 and contacting the rotary cleaning element 28 blocks the inflow of air containing fine dust into the cleaning element chamber 46, so that the fine dust is less likely to adhere to the inner surface of the transmission wall 47, and the permeability can be maintained more remarkably.

The suction port body 16 and the electric vacuum cleaner 1 according to the present embodiment include the transmissive member 56, and the transmissive member 56 includes all or a part of the transmissive wall 47 and also serves as a part of the casing of the suction port main body 31. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can cover the plurality of cleaning body chambers 46 with a small number of components and can be visually observed while suppressing an increase in the number of components.

The suction port body 16 and the electric vacuum cleaner 1 according to the present embodiment include a plurality of rotary cleaning elements 28, and the plurality of rotary cleaning elements 28 rotate in a direction in which dust on the surface f to be cleaned is swept together toward the suction port 27 in a state in which the suction port main body 31 is disposed on the surface f to be cleaned. Therefore, the suction port body 16 and the electric vacuum cleaner 1 more reliably capture dust on the surface f to be cleaned by the rotary cleaning element 28 located in front of the suction port 27 and the rotary cleaning element 28 located behind the suction port 27 while the suction port body 16 is moving. In addition, "the rotary cleaning element 28 located in front of the suction port 27 during the movement of the suction port body 16" is the front cleaning element 28F during the forward movement of the suction port body 16, and the rear cleaning element 28R during the backward movement of the suction port body 16. In addition, "the rotary cleaning element 28 located behind the suction port 27 during the movement of the suction port body 16" is the rear cleaning element 28R during the forward movement of the suction port body 16, and is the front cleaning element 28F during the backward movement of the suction port body 16.

However, the suction port body 16 is generally disposed on the surface f to be cleaned in front of and below the user when the electric vacuum cleaner 1 is used. The suction port body 16 and the electric vacuum cleaner 1 of the present embodiment include the transmission wall 47, and the transmission wall 47 extends along the rotation direction of the rotary cleaning body 28 from the portion of the corresponding rotary cleaning body 28 farthest from the surface f to be cleaned in the state where the suction port body 31 is disposed on the surface f to be cleaned. Therefore, the suction port body 16 and the electric vacuum cleaner 1 enable the user of the electric vacuum cleaner 1 to easily visually observe the driving state of the rotary cleaning element 28.

The suction port body 16 and the electric vacuum cleaner 1 according to the present embodiment include the motor 29, and the motor 29 is disposed between the front cleaning element 28F and the rear cleaning element 28R, and has a portion closer to the surface F to be cleaned than a line segment connecting the portion 28Fa of the front cleaning element 28F, which is farthest from the surface F to be cleaned, and the portion Fb of the rear cleaning element 28R, which is farthest from the surface F to be cleaned. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can be reduced in height as much as possible of the suction port main body 31. Further, the suction port body 16 and the electric vacuum cleaner 1 reduce the ridge line of the suction port body 16, prevent the transparent wall 47 from being hidden from the view of the user of the electric vacuum cleaner 1, and improve the visibility of the rotary cleaning body 28.

In the suction port body 16 and the vacuum cleaner 1 of the present embodiment, when at least one of the plurality of motors 29 is in an overload state, only the motor 29 in the overload state may be stopped, or all of the plurality of motors 29 may be stopped. In either case, the suction port body 16 and the electric vacuum cleaner 1 can easily confirm whether or not the operating states of the plurality of rotary cleaning bodies 28 are normal by the user visually through the wall 47.

Therefore, according to the suction port body 16 and the electric vacuum cleaner 1 of the present embodiment, winding of linear dust particles around the rotary cleaning element 28 can be suppressed, and this can be easily understood when the linear dust particles are wound around the rotary cleaning element 28.

Although several embodiments of the present invention have been described, these embodiments are provided as examples, and are not intended to limit the scope of the present invention. These new embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims

1. An intake body, comprising:

a suction port body having: a suction port opened toward the bottom surface; a suction chamber connected to the suction port; and a plurality of cleaning body chambers which are divided outside the suction chamber and include a first cleaning body chamber and a second cleaning body chamber which sandwich the suction port;

a plurality of rotary cleaning elements including a first rotary cleaning element disposed in the first cleaning element chamber and rotatably supported by the suction port body, and a second rotary cleaning element disposed in the second cleaning element chamber and rotatably supported by the suction port body, the plurality of rotary cleaning elements being disposed in the respective cleaning element chambers; and

at least one driving source which is accommodated in the suction port body and generates driving force for the plurality of rotary cleaning bodies,

the suction port body includes at least one transmissive wall that partitions each of the cleaning element chambers and that covers at least a part of an outer peripheral surface of each of the rotary cleaning elements so as to be visible.

2. The suction port body as set forth in claim 1,

the suction port body includes a permeable member having all or a part of the permeable wall and serving as a part of a casing of the suction port body.

3. The intake body of claim 1 or 2,

in a state where the suction port main body is disposed on a surface to be cleaned, the rotary cleaning bodies rotate in a direction in which dust on the surface to be cleaned is swept together toward the suction port.

4. The intake body of claim 1 or 2,

the at least one penetration wall extends from a portion of the corresponding rotary cleaning body farthest from the surface to be cleaned in a rotation direction of the rotary cleaning body in a state where the suction port main body is disposed on the surface to be cleaned.

5. The intake body of claim 1 or 2,

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 rotary cleaning element farthest from the surface to be cleaned and a portion of the second rotary cleaning element farthest from the surface to be cleaned, and is disposed between the first rotary cleaning element and the second rotary cleaning element.

6. The intake body of claim 1 or 2,

the at least one driving source includes a plurality of the driving sources that individually drive the respective rotary cleaning bodies,

the suction port body includes 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.

7. The intake body of claim 1 or 2,

the suction port body includes a control unit that stops the drive source in an overload state when at least one of the plurality of drive sources is in the overload state.

8. The intake body of claim 1 or 2,

the at least one penetrating wall includes a plurality of divided penetrating walls divided in a direction of a rotation center line of the at least one rotary cleaning element.

9. An electric vacuum cleaner is characterized by comprising:

a cleaner main body;

an electric blower housed in the cleaner body and generating a negative pressure; and

the intake body of any one of claims 1 to 8, in fluid connection with the electric blower.