CN112971585A

CN112971585A - Suction port body and electric dust collector

Info

Publication number: CN112971585A
Application number: CN202010912702.2A
Authority: CN
Inventors: 大岛拳斗; 兴津信秀; 市川洋光
Original assignee: Toshiba Lifestyle Products and Services Corp
Current assignee: Toshiba Lifestyle Products and Services Corp
Priority date: 2019-12-18
Filing date: 2020-09-03
Publication date: 2021-06-18
Also published as: JP7365891B2; JP2021094278A

Abstract

The invention provides a suction port body and an electric dust collector capable of restraining linear dust from winding on a rotary cleaning body. The suction port body (16) is provided with: a suction port main body part (31) which is provided with a suction port (27) opened towards the bottom surface (31a), a suction chamber (45) connected with the suction port (27), and a cleaning body chamber (46) which is divided outside the suction chamber (45) independently; a rotary cleaning body (28) disposed in the cleaning body chamber (46); and a motor (29) that drives the rotary cleaning body (28), wherein the suction port (27) and the rotary cleaning body (28) are arranged in the direction of travel of the suction port body (31), and the suction port body (31) comprises: a partition wall (65) that divides the suction chamber (45) and the cleaning body chamber (46), and that defines a part of the inner surface of the suction chamber (45) and a part of the edge of the suction port (27); and a dust removal projection (66) which protrudes from the edge of the partition wall (65) and is in contact with the rotary cleaning body (28).

Description

Suction port body and electric dust collector

Technical Field

The embodiment of the invention relates to a suction port body and an electric dust collector.

Background

The floor brush includes a suction chamber connected to a suction port provided on a bottom surface of the floor brush, and a rotary brush rotatably disposed in the suction chamber.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2019-025203

Disclosure of Invention

Problems to be solved by the invention

A conventional suction port body includes a suction port suction chamber having a suction port, and a rotary brush disposed in the suction chamber. 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.

Accordingly, an object of the present invention is to provide a suction port body and an electric vacuum cleaner that can suppress winding of linear dust around a rotary cleaning body.

Means for solving the problems

In order to solve the above problem, an intake body according to an embodiment of the present invention includes: a suction port body having: a suction port opened toward the bottom surface; a suction chamber connected to the suction port; and a cleaning body chamber independently divided outside the suction chamber; a rotary cleaning element disposed in the cleaning element chamber and rotatably supported by the suction port main body; and a drive source that is housed in the suction port body and generates a drive force of the rotary cleaning body, the suction port and the rotary cleaning body being aligned in a traveling direction of the suction port body, the suction port body including: a partition wall that divides the suction chamber and the cleaning body chamber, and that defines a part of an inner surface of the suction chamber and a part of an edge of the suction port; and a dust removing protrusion protruding from an edge of the partition wall and contacting the rotary cleaning body.

Further, it is preferable that the suction port body according to the embodiment of the present invention has an arc-shaped curved surface facing the partition wall and projecting toward the partition wall, on an inner surface of the suction chamber, and on a first remaining portion excluding a part of the inner surface of the suction chamber.

In the suction port body according to the embodiment of the present invention, preferably, the suction port body has a funnel-shaped inclined surface that is connected to the partition wall and narrows an air passage width toward a downstream side of the suction chamber, on an inner surface of the suction chamber and is a second remaining portion excluding a portion of the inner surface of the suction chamber. The inclined surface has a stepped shape including a guide surface facing the partition wall when viewed in a longitudinal section of the suction port body.

The suction port body of the suction port body according to the embodiment of the present invention preferably has a second cleaning body chamber independently partitioned outside the suction chamber. The suction port body preferably includes a second rotary cleaning element disposed in the second cleaning element chamber and rotatably supported by the suction port body. Preferably, the suction port, the rotary cleaning element, and the second rotary cleaning element are arranged in a traveling direction of the suction port main body, the suction port is disposed between the rotary cleaning element and the second rotary cleaning element, and the suction port main body includes: a second partition wall that divides the suction chamber and the second cleaning body chamber and defines a part of an edge of the suction port; and a second dust removing protrusion protruding from an edge of the second partition wall and contacting the second rotary cleaning element, wherein the second partition wall has a hole connecting the suction chamber and the second cleaning element chamber.

Preferably, the second dust removal projection of the suction port body according to the embodiment of the present invention is formed to protrude obliquely from the root portion toward the projection end in a direction away from the reference surface, with the ground surface of the suction port body as the reference surface.

Preferably, the suction port body according to the embodiment of the present invention includes a protruding portion that is provided at a part of an opening edge of the second cleaning body chamber, is located at a position facing the second dust removal projection, and has a vertical sectional shape having an acute angle toward the second rotary cleaning body.

Further, an electric vacuum cleaner according to an 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.

Effects of the invention

According to the present invention, it is possible to provide a suction port body and an electric vacuum cleaner capable of suppressing winding of linear dust around a rotary cleaning body.

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 of the suction port body.

Fig. 3 is a plan view of the suction port body according to the 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 the suction port body.

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

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

Fig. 9 is a perspective view of an integrally molded component of the safety device of the suction port body according to the embodiment of the present invention.

Fig. 10 is a sectional view of a suction port body according to an embodiment of the present invention.

Fig. 11 is a sectional view of a suction port body according to an embodiment of the present invention.

Description of the reference numerals

1 … electric vacuum cleaner, 11 … handle, 12 … vacuum cleaner body, 13 … secondary battery, 15 … extension tube, 16 … suction port body, 17 … body housing, 17a … front half, 17b … rear half, 18 … electric blower, 19 … dust separation dust collection part, 21 … body control part, 23 … body connection port, 26 … input part, 26a … operation start switch, 26b … operation stop switch, 26c … brush switch, 27 … suction port, 28 … rotary cleaning body, 28F … front cleaning body, 28R … rear cleaning body, 29 …, 29a … output shaft, 29F … front electric motor, 29R … rear electric motor, 31 … suction port, 31a … bottom surface, 31b … bottom plate, 32 … connection tube part, 36 35 … body, 36 … upper housing, 38 … rotary connection tube part, … rotary connection tube part 3641 power transmission mechanism, 41F … front transmission mechanism, 41R … rear transmission mechanism, 42 … suction port body controller, 43 … safety device, 45 … suction chamber, 46 … cleaning body chamber, 46F … front cleaning body chamber, 46R … rear cleaning body chamber, 48 … air path cover, 49 … air path narrow body, 50 … rolling element, 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, 55F 55 … safety device chamber, 57 … relay tube, 59 … brush, 61 … driving gear, 62 … driven gear, 63 … belt, 65F 65 … partition, 65F … front partition, 65R … rear partition, 66R … dust removing projection, 66F … front projection, 66R … rear projection, 3668, … rear projection, …, curved surface …, … projection curved surface …, … opening and curved …, … projection, … opening and curved surface …, … projection, …, and curved surface … projection, 83 … operation piece, 85 … stop part, 86 … shaft part, 87 … elastic component, 91 … bracket, 92 … supporting shaft, 93 … roller, 95 … stop piece, 95a … base end part, 95b … free end part, 96 … sphere, 99 … integral molding component.

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 11. In the drawings, the same or corresponding components are denoted by the same reference numerals.

As shown in fig. 1, the electric vacuum cleaner 1 of the present embodiment is, for example, a stick type. 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 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 secondary battery 13 is also called a storage battery, a rechargeable battery, and a rechargeable battery.

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 from a floor surface through the suction port body 16 and the extension pipe 15, separates the dust from the air containing the dust, collects and accumulates the separated dust, and exhausts the separated air. Hereinafter, the air containing dust is referred to as "dust-containing 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. In a use state (fig. 2) in which the suction port body 16 is disposed on the floor, a dust separating and collecting portion 19 is provided above the front half portion 17a of the main body casing 17. In a use state (fig. 2) in which the suction port body 16 is disposed on the floor, the rear half portion 17b of the main body casing 17 extends rearward.

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, 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. A joint structure for detachably attaching the suction port body 16 of the cleaner body 12 is provided at the other end of the extension pipe 15. The extension pipe 15 may be retractable or non-retractable.

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 body 28 disposed at the suction port 27 and a motor 29 as a driving source for driving the rotatable cleaning body 28. A joint structure that is detachable from the other end of the extension pipe 15 is provided at one end of the suction port body 16. 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 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 values to the electric blower 18 are the maximum strong operation mode and the minimum weak operation mode. 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.

As shown in fig. 2, the suction port body 16 of the present embodiment includes a substantially cubic suction port body 31 and a connecting pipe portion 32 provided at the rear of the suction port 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 connecting pipe portion 32 is provided at the rear portion of the suction port body portion 31 and at a substantially central portion in the width direction. The connecting pipe portion 32 includes a rotary connecting pipe portion 38 rotatable with respect to the suction port body portion 31, and a swing connecting pipe portion 39 swingably with respect to the rotary connecting pipe portion 38.

The rotary connecting pipe portion 38 has a rotation center line extending in the front-rear direction of the suction port body 16. The rotation center line is a line segment coincident with the X axis or a line segment parallel to the X axis. The rotation center line divides the suction port body 31 into left and right portions.

The swinging connecting pipe portion 39 swings about a line segment orthogonal to the rotation center line of the rotating connecting pipe portion 38 or a line segment parallel to the line segment. The free end of the swing connecting pipe portion 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 of the embodiment of the present invention taken along line VII-VII of fig. 3.

Fig. 4 shows the suction port body 16 with the upper case 36 removed.

As shown in fig. 3 to 7, the suction port body 16 of the present embodiment includes: a suction inlet body 31; a rotary cleaning element 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 body 16 is provided with a safety device 43, and the safety device 43 stops the motor 29 when the suction port body 16 is separated from the surface to be cleaned or when the suction port body 16 is reversed in the vertical direction. The term "upside down of the suction port body 16" means a state in which the bottom surface 31a of the suction port body 16 is oriented upward from the horizontal direction.

The suction port 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 for accommodating the rotary cleaning body 28.

The cleaning body chamber 46 is independently partitioned outside the suction chamber 45. In other words, the cleaning body chamber 46 and the suction chamber 45 are independently divided. The cleaning body chamber 46 is open to the bottom surface of the suction port body 31.

The suction chamber 45 is defined by the lower casing 35, an air passage cover 48 housed inside the upper casing 36 and covering a part of the lower casing 35, and an air passage narrowing portion 49 narrowing the suction port 27 having a large width in the left-right direction of the suction port body 31 toward the center.

The suction port body 16 includes a plurality of rollers 50, and the plurality of rollers 50 are provided on the bottom surface 31a of the suction port body 31, and support the suction port body 31 while contacting the surface f to be cleaned. 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 divided between the lower case 35 and the upper case 36. The space includes: a motor chamber 51 for accommodating the motor 29; a machine chamber 52 for housing the power transmission mechanism 41; a control chamber 53 for housing the suction port body control unit 42; and a safety device chamber 55 housing the safety device 43. These motor room 51, machine room 52, control room 53, and safety device room 55 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 safety device chamber 55 is disposed at the rear of the suction port body 31, and is provided on each of the left and right sides of the rotary connecting pipe 38 so as to sandwich the rotary connecting pipe 38 of the connecting pipe 32.

The suction port body 31 includes a pair of rotary cleaning elements 28 that 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 correspond to the respective rotary cleaning elements 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 separated by substantially the same distance from the center line of the suction port body 31 that divides the suction port body 31 into left and right parts. 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 separated by substantially the same distance from the center line of the suction port body 31 that divides the suction port body 31 into left and right portions. In other words, among the elements and components constituting the suction port body 16, the motor 29 and the power transmission mechanism 41, which have relatively large masses, are arranged substantially in line symmetry with respect to the center line of the suction port body 31. Therefore, the suction port body 16 can easily suppress the lateral unbalance with respect to the center line.

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 that houses the front cleaning element 28F 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 (first motor), and the power transmission mechanism 41 corresponding to the front cleaning element 28F is referred to as a front transmission mechanism 41F (first transmission mechanism). The motor chamber 51 housing the front motor 29F is referred to as a front motor chamber 51F (first motor chamber), and the machine chamber 52 housing the front transmission mechanism 41F is referred to as a front machine chamber 52F (first machine chamber).

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 (second motor), and the power transmission mechanism 41 corresponding to the rear cleaning element 28R is referred to as a rear transmission mechanism 41R (second transmission mechanism). The motor chamber 51 housing the rear motor 29R is referred to as a rear motor chamber 51R (second motor chamber), and the machine chamber 52 housing the rear transmission mechanism 41R is referred to as a rear machine chamber 52R (second machine chamber).

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. Front cleaning element 28F, suction port 27, and rear cleaning element 28R are arranged in this order from the front side to the rear side of 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 element 28F, the air passage narrowing element 49, and the rear cleaning element 28R are arranged in this order from the front side to the rear side 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 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 chamber 45 is bent rearward of the suction port body 31 along the lower casing 35 so as to cover the rear cleaning body chamber 46R, and is connected to the connecting pipe portion 32. A relay pipe 57 is provided between the suction chamber 45 and the connecting pipe portion 32. The relay pipe 57 serves to support the base of the connection pipe portion 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, and the air passage narrowing member 49. The rear cleaning body chamber 46R is partitioned by the lower casing 35 and the air passage narrowing body 49.

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. The motor room 51 is disposed between the control room 53 and the machine room 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 the top of front cleaning element 28F and the top of rear cleaning element 28R. 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 provided on the left side of the suction port body 31 and in parallel with the front machine chamber 52F.

The rear motor chamber 51R is provided on the right side of the suction port body 31 and 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 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 motor 29 rotates the rotary cleaning element 28 in a direction to sweep dust toward the suction port 27. 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 and defines a part of the edge of the suction port 27; and a dust removal protrusion 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 has an arc-shaped curved surface 68 which faces the front partition wall 65F and which is convex toward the front partition wall 65F. The inner surface of the suction chamber 45 on the rear side is referred to as "first remaining portion" of the inner surface of the suction chamber 45. 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 the rear cleaning body 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 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 of the suction chamber 45, that is, the downstream side of the suction chamber 45.

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 has a funnel-shaped inclined surface 71 which is connected to the partition wall 65 and narrows the air passage width toward the back side of the suction chamber 45, that is, the downstream side of the suction chamber 45. The inner surfaces on the left and right sides of the suction chamber 45 are referred to as "second remaining portions" of the inner surface 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 connecting pipe portion 32.

The inclined surface 71 has a stepped shape including a guide surface 72 facing the partition wall 65 when viewed in a longitudinal 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. However, the middle portion of the linear dust may be sandwiched between the front cleaning element 28F and the surface F to be cleaned, and one or both ends of the linear dust may float toward the suction port 27. In this case, the guide surface 72 guides the end of the linear dust toward the back side of the suction chamber 45, thereby preventing the linear dust floating toward the suction port 27 at one end or both ends from passing over the rear partition wall 65R and approaching the rear cleaning element 28R.

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 from its root toward the projecting end 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 inventors have found that linear dust is less likely to enter both the front cleaning element chamber 46F and the rear cleaning element chamber 46R by making the front projection 66F substantially parallel to the reference surface and making the rear projection 66R inclined in a direction away from the reference surface.

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.

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 protruding portion 75 preferably extends over the entire width of the rear cleaning body 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.

Next, the safety device 43 of the suction port body 16 will be described in detail.

Figure 8 is a cross-sectional view of the suction port body of the embodiment of the present invention taken along line VIII-VIII of figure 3.

As shown in fig. 8 and 9, the safety device 43 of the suction port body 16 according to the present embodiment includes: a shutter 81 for opening and closing a power supply circuit connected to the motor 29; a sensing unit 82 that can change the amount of protrusion from the bottom surface 31a of the suction port body 31 and detect whether the suction port body 31 is in contact with the surface f to be cleaned with the bottom surface 31a facing the surface f to be cleaned; an operation piece 83 for closing the shutter 81 and driving the motor 29 when the sensing part 82 senses that the suction port body 31 has the bottom surface 31a facing the surface f to be cleaned and is in contact with the surface f to be cleaned; a blocking portion 85 that blocks the shutter 81 from being closed by the operation piece 83 when the suction port body 31 is reversed; a shaft 86 that rotationally integrates the sensing unit 82, the operation piece 83, and the blocking unit 85; and an elastic member 87 that applies a force to the sensing portion 82 in a direction protruding from the bottom surface 31a of the suction port body portion 31.

The sensing portion 82 is provided at one end of the shaft portion 86. The sensing portion 82 is accommodated in either one of the right-side safety device chamber 55 and the left-side safety device chamber 55 of the connecting pipe portion 32. The sensing portion 82 is accommodated in the safety device chamber 55 on the right side of the connecting tube portion 32, for example. The sensing portion 82 includes a bracket 91 provided at one end of the shaft portion 86, a support shaft 92 provided at the bracket 91, and a roller 93 rotatably supported by the bracket 91 via the support shaft 92.

The blocking portion 85 is provided at the other end of the shaft portion 86 together with the operation piece 83. The blocking portion 85 is accommodated in the other of the right-side safety device chamber 55 and the left-side safety device chamber 55 of the connecting pipe portion 32 together with the operation piece 83. The blocking portion 85 is accommodated in the safety device chamber 55 on the left side of the connecting pipe portion 32, for example. The stopper 85 includes a substantially U-shaped stopper piece 95 provided at the other end of the shaft portion 86, and a ball 96 movable in the vertical direction of the suction port body 31 by its own weight.

A stopper piece 95 projects from the shaft portion 86 in an arm shape. The stopper piece 95 has one end portion of a U shape and is fixed to a base end portion 95a of the shaft portion 86, and the other end portion of the U shape and is separated from a free end portion 95b of the shaft portion 86 in the radial direction.

The ball 96 is a metal ball, for example, a stainless steel ball, which has a strength higher than that of the stopper piece 95 of the stopper 85 made of synthetic resin.

The operation piece 83 is provided at the other end of the shaft portion 86 together with the stopper portion 85. The operation piece 83 is accommodated in the other of the right-side safety device chamber 55 and the left-side safety device chamber 55 of the connecting pipe portion 32 together with the stopper portion 85. The operation piece 83 is accommodated in the safety device chamber 55 on the left side of the connecting pipe portion 32, for example. The operation piece 83 is located closer to the other end of the shaft portion 86 than the stopper piece 95 of the stopper portion 85, and is juxtaposed with the stopper piece 95. When the suction port body 16 contacts the surface f to be cleaned, the operation piece 83 rotates in conjunction with the operation of pushing the roller 93 into the suction port body 31 by the surface f to be cleaned, and closes the shutter 81.

The shaft portion 86 is rotatably supported by the suction port body portion 31. The shaft portion 86 is disposed between the connecting tube portion 32 and the bottom plate 31b of the suction port body portion 31, and extends in a direction intersecting the connecting tube portion 32 across the connecting tube portion 32 when the suction port body portion 31 is viewed in plan. In other words, the shaft portion 86 extends in the width direction of the suction port body portion 31. The shaft portion 86 is disposed directly below the connection portion between the connection pipe portion 32 and the relay pipe 57. The shaft portion 86 is bridged between the right-side safety device chamber 55 and the left-side safety device chamber 55 of the connecting pipe portion 32.

The torsional strength of the shaft portion 86 is higher than the torsional strength of the sensing portion 82 and the torsional strength of the operation piece 83. The torsional rigidity of the shaft portion 86 is higher than the torsional rigidity of the sensing portion 82 and the torsional rigidity of the operation piece 83.

The bracket 91 of the sensing portion 82, the operation piece 83, the stopper piece 95 of the preventing portion 85, and the shaft portion 86 are rotationally integrated by an integrally molded member 99. The bracket 91 of the sensor 82, the operation piece 83, and the stopper piece 95 of the stopper 85 are made of, for example, synthetic resin. The shaft portion 86 has a shaft itself or a shaft core made of metal, for example, stainless steel, which has a strength and a shear elastic coefficient (a rigidity ratio) higher than those of the bracket 91 of the sensing portion 82, the operation piece 83, and the stopper piece 95 of the stopper portion 85 made of synthetic resin.

The integrally molded member 99 is, for example, an integrally molded product in which the metal shaft portion 86 is insert-molded to the bracket 91 of the sensing portion 82, the operation piece 83, and the stopper piece 95 of the stopper portion 85, which are made of synthetic resin. The shaft portion 86 may or may not be covered with synthetic resin. The bracket 91 of the sensing portion 82, the operation piece 83, the stopper piece 95 of the preventing portion 85, and the shaft portion 86 may be integrally coupled to each other by being rotated by a mechanical element such as a key, for example.

The elastic member 87 is, for example, a torsion spring. The elastic member 87 is hooked on a spring receiving portion provided at an appropriate position of the integrally molded member 99 and a spring receiving portion provided at an appropriate position of the suction port body 31. When the sensing portion 82 is pushed in from the maximum protruding position, the elastic member 87 accumulates energy, and dissipates the energy to protrude the sensing portion 82. The elastic member 87 supports the bracket 91, the operation piece 83, the stopper piece 95, the shaft portion 86, the support shaft 92, and the roller 93 as the integrally molded member 99 so as not to rotate by their own weight even when the suction port body 16 is inverted vertically and the bottom surface 31a of the suction port body 16 faces upward. Therefore, it is preferable to apply an appropriate preload to the elastic member 87.

Figure 10 is a cross-sectional view of the inlet body of the embodiment of the present invention on the X-ray of figure 3.

As shown in fig. 10, when the suction port body 16 is brought into contact with the surface f to be cleaned with the bottom surface 31a facing the surface f to be cleaned, the roller 93 is pushed into the suction port body 31 by the surface f to be cleaned against the force of the elastic member 87. The operation of the roller 93 rotates the shaft portion 86 via the support shaft 92 and the bracket 91 of the sensing portion 82. The rotation of the shaft portion 86 rotates the operation piece 83 and the stopper piece 95 of the stopper portion 85. The elastic member 87 is deformed by the rotation of the shaft portion 86, and stores energy.

The rotating operation piece 83 closes the shutter 81 to enable a power supply circuit to the motor 29. When the brush switch 26c is operated to supply electric power to the suction port body 16 in a state where the shutter 81 is closed, electric power is supplied to the motor 29 to drive the motor 29. Then, the rotary cleaning element 28 rotates.

The stopper piece 95 rotated causes the U-shaped open portion to be oriented in the horizontal direction. The ball 96 of the stopper 85 is caught inside the U-shaped stopper piece 95, that is, the concave portion of the stopper piece 95.

Next, when the suction port body 16 is separated from the surface f to be cleaned with the bottom surface 31a facing the surface f to be cleaned, the elastic member 87 returns, and the shaft portion 86 rotates in a direction in which the roller 93 protrudes from the suction port body 31. The rotation of the shaft portion 86 rotates the operation piece 83, the stopper piece 95 of the preventing portion 85, and the bracket 91 of the sensing portion 82.

The rotating bracket 91 causes the roller 93 to protrude from the suction port main body 31. At this time, the protruding position of the sensing part 82 reaches the maximum protruding position.

The rotating operation piece 83 turns off the shutter 81 to cut off the power supply to the motor 29. In a state where the shutter 81 is opened, even in a state where electric power is supplied to the suction port body 16 by operating the brush switch 26c, the electric power supply to the motor 29 is cut off. Then, the motor 29 is stopped, and the rotating cleaning element 28 is stopped.

The stopper piece 95 rotated causes the U-shaped open portion to face upward. When the U-shaped open portion is directed upward, the ball 96 can be disengaged from the inside (concave portion) of the U-shaped stopper piece 95. That is, the ball 96 can move in an upward direction.

Figure 11 is a cross-sectional view of the inlet body of the embodiment of the present invention on the X-ray of figure 3.

As shown in fig. 11, when the suction port body 16 is inverted in the vertical direction and the bottom surface 31a of the suction port body 16 faces upward, the elastic member 87 maintains the state in which the roller 93 protrudes from the suction port body 31 while supporting the rotation of the shaft portion 86. At this time, the ball 96 is disengaged from the inside of the U-shaped stopper piece 95 by its own weight. The ball 96 that has escaped from the inside of the stopper piece 95 is disposed at a rotation preventing position (fig. 10) where the rotation of the stopper piece 95 is prevented by a wall that is appropriately provided in the suction port body 31 and limits the moving range of the ball 96. When an external force acts on the sensing portion 82 such that the roller 93 is pushed into the suction port body 31, the ball 96 disposed at the rotation blocking position abuts against the free end portion 95b of the stopper piece 95 to block the rotation of the shaft portion 86. Then, the rotation of the operation piece 83, the stopper piece 95 of the preventing portion 85, and the bracket 91 of the sensing portion 82 is prevented.

The operation piece 83 whose rotation is prevented maintains the state of opening the shutter 81. Then, the motor 29 is continuously stopped, and the rotating cleaning element 28 is continuously stopped.

As described above, the suction port body 16 and the electric vacuum cleaner 1 according to the present embodiment include: a suction port body 31 having 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 independently partitioned outside the suction chamber 45; a rotary cleaning element 28 disposed in the cleaning element chamber 46; and a motor 29 for generating a driving force for rotating the cleaning element 28. The suction port 27 and the rotary cleaning element 28 are aligned in the traveling direction of the suction port body 31. The suction port body 31 includes a partition wall 65 that divides the suction chamber 45 and the cleaning element chamber 46 independently from each other and defines a part of the edge of the suction port 27, and a dust removal projection 66 that projects from the edge of the partition wall 65 and contacts the rotary cleaning element 28. Therefore, the suction port body 16 and the electric vacuum cleaner 1 do not generate a flow of air that surrounds the rotary cleaning element 28 around the rotary cleaning element 28. 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 body 28.

The suction port body 16 and the vacuum cleaner 1 of the present embodiment include a suction chamber 45, and the suction chamber 45 has an arc-shaped curved surface 68 having a convex shape toward the partition wall 65 (front partition wall 65F). Therefore, the suction port body 16 and the electric vacuum cleaner 1 smoothly guide the dust swept up by the rotation of the rotary cleaning element 28 (front cleaning element 28F) to the rear side of the suction chamber 45 by the curved surface 68, and suppress the remaining of the dust on the dust-cleaned surface F.

The suction port body 16 and the vacuum cleaner 1 of the present embodiment are provided with a funnel-shaped inclined surface 71 that narrows the width of the air passage toward the downstream side of the suction chamber 45. The inclined surface 71 has a stepped shape including a guide surface 72 facing the partition wall 65 (front partition wall 65F). Therefore, the suction port body 16 and the electric vacuum cleaner 1 can guide the dust swept up by the front cleaning body 28F to the rear side of the suction chamber 45 by capturing the dust by the guide surface 72, and can suppress the remaining of various kinds of dust on the surface F to be cleaned.

The suction port body 16 and the electric vacuum cleaner 1 of the present embodiment include a rear cleaning body chamber 46R defined outside the suction chamber 45, and a rear cleaning body 28R disposed in the rear cleaning body chamber 46R. The suction port 27, the front cleaning element 28F, and the rear cleaning element 28R are arranged in the traveling direction of the suction port body 31, and the suction port 27 is disposed between the front cleaning element 28F and the rear cleaning element 28R. A rear partition wall 65R that divides the suction chamber 45 and the rear cleaning body chamber 46R and defines a part of the edge of the suction port 27 has a hole 73 that connects the suction chamber 45 and the rear cleaning body chamber 46R. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can discharge the dust entering the rear cleaning body chamber 46R into the suction chamber 45 so as not to remain in the rear cleaning body chamber 46R.

The suction port body 16 and the vacuum cleaner 1 of the present embodiment are provided with a rear projection 66R, and the rear projection 66R projects obliquely from the base portion toward the projecting end in a direction away from the reference plane, with the ground plane of the suction port body 31 as the reference plane. Therefore, the suction port body 16 and the electric vacuum cleaner 1 can prevent linear dust from entering both the front cleaning body chamber 46F and the rear cleaning body chamber 46R.

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

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 new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the 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 cleaning body chamber independently divided outside the suction chamber;

a rotary cleaning element disposed in the cleaning element chamber and rotatably supported by the suction port main body; and

a drive source which is accommodated in the suction port body and generates a drive force for rotating the cleaning element,

the suction inlet and the rotary cleaning body are arranged in the advancing direction of the suction inlet main body,

the suction port body includes:

a partition wall that divides the suction chamber and the cleaning body chamber, and that defines a part of an inner surface of the suction chamber and a part of an edge of the suction port; and

and a dust removing protrusion protruding from an edge of the partition wall and contacting the rotary cleaning body.

2. The intake body of claim 1,

the suction chamber has a first remaining portion on an inner surface of the suction chamber, the first remaining portion being a portion of the inner surface of the suction chamber, and the first remaining portion having an arc-shaped curved surface facing the partition wall and protruding toward the partition wall.

3. The intake body according to claim 1 or 2,

a second remaining portion of the inner surface of the suction chamber excluding a portion of the inner surface of the suction chamber, the second remaining portion having a funnel-shaped inclined surface that is connected to the partition wall and narrows an air passage width toward a downstream side of the suction chamber,

the inclined surface has a stepped shape including a guide surface facing the partition wall when viewed in a longitudinal section of the suction port body.

4. The intake body according to any one of claims 1 to 3,

the suction port body has a second cleaning body chamber which is independently divided outside the suction chamber,

the suction port body includes a second rotary cleaning element disposed in the second cleaning element chamber and rotatably supported by the suction port body,

the suction port, the rotary cleaning element, and the second rotary cleaning element are arranged in the traveling direction of the suction port body,

the suction port is disposed between the rotary cleaning element and the second rotary cleaning element,

the suction port body includes:

a second partition wall that divides the suction chamber and the second cleaning body chamber and defines a part of an edge of the suction port; and

a second dust removing protrusion protruding from an edge of the second partition wall and contacting the second rotary cleaning body,

the second partition wall has a hole connecting the suction chamber and the second cleaning body chamber.

5. The intake body of claim 4,

the second dust removal projection is formed to project obliquely from a base portion thereof toward a projecting end in a direction away from the reference surface, with the ground surface of the suction port body as a reference surface.

6. The intake body of claim 4 or 5,

the suction port body includes a protruding portion that is provided at a portion of an opening edge of the second cleaning body chamber, is located at a position facing the second dust removal projection, and has a longitudinal sectional shape with an acute angle toward the second rotary cleaning body.

7. An electric vacuum cleaner is provided with:

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 6, in fluid connection with the electric blower.