Suction inlet body and electric vacuum cleaner

Abstract

The invention provides a suction inlet body and an electric dust collector. Dust on a dust collection surface is scraped up to the edge of at least one of the left side and the right side of the suction inlet body. The suction inlet body is provided with: a rotary cleaning body capable of scraping up dust on a surface to be subjected to dust collection by rotating; a motor as a driving source for outputting a driving force for rotating the rotary cleaning body; a support part that rotatably supports the rotary cleaning body in a cantilever shape; a power transmission mechanism for transmitting a driving force from the motor to the support part to rotate the rotary cleaning body; and a connection mechanism that detachably connects the rotary cleaning body to the support portion, the rotary cleaning body having a cylindrical shaft core portion having a support end close to the support portion, a free end away from the support portion, and a cavity, the connection mechanism having a recessed portion and a protruding portion, one of which is provided integrally with the support portion and the other of which is provided integrally with the support portion. And the other part is arranged in the cavity of the shaft core part and is hooked with the shaft core part in a disengageable manner, so that the rotary cleaning body is prevented from being separated from the supporting part.

Description

Technical Field

[0001] Embodiments of the present invention relate to a suction nozzle and an electric vacuum cleaner. Background Art

[0002] A known suction port body comprises: a rotating brush disposed in a brush chamber of the suction port body; a power transmission mechanism disposed at one end of the left or right side of the suction port body; a connecting convex portion and a connecting concave portion connecting one end of the rotating brush to the power transmission mechanism portion; and a holding portion supporting the other end of the rotating brush to the suction port body. The suction port body supports the rotating brush through the connecting portion (connecting concave portion and connecting convex portion) and both ends of the holding portion. In addition, the existing suction port body accommodates the power transmission mechanism portion between one end of the rotating brush and one end of the suction port body.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-003357

[0004] In the conventional suction port body, since the rotating brush is supported at both ends, a structure equivalent to a bearing is required at the left and right ends of the suction port body. This structure equivalent to a bearing prevents the rotating brush from reaching the edge (margin) of at least one end of the suction port body.

[0005] In addition, in the conventional suction port, a capacity is required to accommodate the power transmission mechanism between one end of the rotating brush and one end of the suction port, which prevents the rotating brush from reaching the edge of at least one end of the suction port.

[0006] That is, the conventional suction port body cannot scrape up dust by the rotating brush up to the edge of at least one end portion. Summary of the invention

[0007] Therefore, an object of the present invention is to provide a suction port body and an electric vacuum cleaner capable of scraping off dust on a suction surface by rotating a cleaning element to at least one of the left and right edges of the suction port body.

[0008] In order to solve the above-mentioned problems, the suction port body of the embodiment of the present invention comprises: a rotating cleaning body, which can scrape off the dust on the dusted surface by rotating; a driving source, which outputs a driving force to rotate the above-mentioned rotating cleaning body; a supporting part, which supports the above-mentioned rotating cleaning body so that it can rotate and is cantilevered; a power transmission mechanism, which transmits the above-mentioned driving force from the above-mentioned driving source to the above-mentioned supporting part to rotate the above-mentioned rotating cleaning body; and a connecting mechanism, which connects the above-mentioned rotating cleaning body to the above-mentioned supporting part in a detachable manner, the above-mentioned rotating cleaning body has a cylindrical shaft core part, the above-mentioned shaft core part has a supporting end close to the above-mentioned supporting part, a free end away from the above-mentioned supporting part and a cavity, the above-mentioned connecting mechanism has a recess and a convex part, any one of the above-mentioned recess and the above-mentioned convex part is integrally arranged on the above-mentioned supporting part, and any other one is arranged in the above-mentioned cavity of the above-mentioned shaft core part, the above-mentioned recess and the above-mentioned convex part are hooked with each other in a manner that can release the hook, so as to prevent the above-mentioned rotating cleaning body from separating from the above-mentioned supporting part.

[0009] Furthermore, the electric vacuum cleaner according to the embodiment of the present invention includes: a vacuum cleaner body; an electric blower housed in the vacuum cleaner body and generating negative pressure; and the suction port body fluidically connected to the electric blower.

[0010] Effects of the Invention

[0011] According to the suction port body and the electric vacuum cleaner of the present invention, the dust on the suction surface can be scraped off by the rotating cleaning element to at least one of the left and right edges of the suction port body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a perspective view of the electric vacuum cleaner according to the embodiment of the present invention.

[0013] Figure 2 It is a perspective view of the suction port body according to the embodiment of the present invention.

[0014] Figure 3 It is a perspective view of the suction port body according to the embodiment of the present invention.

[0015] Figure 4 It is a top view of the suction port body according to the embodiment of the present invention.

[0016] Figure 5 It is a bottom view of the suction port body according to the embodiment of the present invention.

[0017] Figure 6 This is a perspective view of the suction port body according to the embodiment of the present invention as viewed from below.

[0018] Figure 7 It is a cross-sectional view of the suction port body according to the embodiment of the present invention.

[0019] Figure 8It is a cross-sectional view of the suction port body according to the embodiment of the present invention.

[0020] Fig. 9 It is a three-dimensional cross-sectional view of the suction port body according to the embodiment of the present invention.

[0021] Fig.10 It is a cross-sectional view of the rotary cleaning body and the connection mechanism according to the embodiment of the present invention.

[0022] Fig.11 It is a perspective view of a connection mechanism according to an embodiment of the present invention.

[0023] Fig.12 It is a perspective view of a convex portion of the connection mechanism according to the embodiment of the present invention.

[0024] Fig.13 It is a perspective view of the recessed portion of the connection mechanism according to the embodiment of the present invention.

[0025] Fig.14 It is a perspective view of a connection release body of the connection mechanism according to the embodiment of the present invention.

[0026] Fig.15 It is a front view of the suction port body according to the embodiment of the present invention.

[0027] Fig.16 It is a perspective view of another example of the suction port main body of the suction port body according to the embodiment of the present invention.

[0028] Fig.17 It is a cross-sectional view of another example of the suction port main body of the suction port body according to the embodiment of the present invention.

[0029] Fig.18 It is a schematic diagram showing a second example of the suction port body according to the embodiment of the present invention.

[0030] Fig.19 It is a schematic diagram showing a third example of the suction port body according to the embodiment of the present invention.

[0031] Fig. 20 It is a schematic diagram showing a fourth example of the suction port body according to the embodiment of the present invention.

[0032] Explanation of symbols

[0033] 1: Electric vacuum cleaner; 11: Secondary battery; 12: Electric blower; 15: Handle; 16: Main body; 17: Extension tube; 18, 18A, 18B, 18C: Suction port; 21: Main body shell; 21a: Front; 21b: Central; 21c: Rear; 22: Dust separation and dust collection unit; 23: Main body control unit; 25: Suction port; 26: Input unit; 28: Main body connection port; 29: Exhaust port; 31: Battery installation unit; 32, 32A, 32B: Rotating cleaning body; 32L: Left Rotating cleaning body; 32R: right-rotating cleaning body; 32r: supporting end; 32t: free end; 32c: hollow; 33: motor; 33a: output shaft; 41: suction port body; 41b: bottom surface; 41b: bottom surface; 42: connecting pipe; 45: lower shell; 46: upper shell; 48: rotating connecting pipe; 49: swinging connecting pipe; 52, 52C: supporting part; 53: power transmission mechanism; 55: suction port body control part; 61, 61C: cleaning body storage recess; 62: dust suction recess; 63: cleaning Cleaning chamber; 65: suction chamber; 68: partition; 72: air passage narrowing tube; 75: rolling element; 76: linear cleaning element; 77: motor chamber; 78: machine chamber; 79: control chamber; 81, 81A, 81B: shaft core; 82, 82A, 82B: cleaning member; 83: side wall; 83i: inner wall surface; 83e: arc-shaped edge; 84: sealing portion; 85: bearing housing; 86: driving pulley; 87: driven pulley; 88: belt; 89: connecting mechanism; 91: bearing; 92: support Axis base; 93: supporting shaft portion; 93L: left supporting shaft portion; 93R: right supporting shaft portion; 95: recessed portion; 96: convex portion; 97: base; 98: arm; 101: connection release body; 102: retaining force generating portion; 105: inclined surface; 106: rod body portion; 107: guide rod; 108: guide hole; 109: coil spring; 111: spring seat portion; 112: opening portion; 115: second recessed portion; 116: second convex portion; 117: cover portion; 118: retaining portion; 121: universal joint. DETAILED DESCRIPTION

[0034] Reference Figures 1 to 20 Embodiments of the suction port body and the electric vacuum cleaner of the present invention will be described.

[0035] Figure 1 It is a perspective view of the electric vacuum cleaner according to the embodiment of the present invention.

[0036] like Figure 1 As shown, the vacuum cleaner 1 of this embodiment includes a load driven by electric power stored in a secondary battery 11, such as an electric blower 12. The secondary battery 11 is also called a storage battery, a rechargeable battery, or a rechargeable battery. The vacuum cleaner 1 is, for example, a stick-type vacuum cleaner 1.

[0037] The vacuum cleaner 1 may be a horizontal type, an upright type, or a portable type. The vacuum cleaner 1 may be a cordless type having a secondary battery 11 as a power source, or a corded type that obtains power from a commercial AC power source via a power cord.

[0038] The electric vacuum cleaner 1 includes a main body 16 having a handle 15 and capable of being hand-operated, a secondary battery 11 detachably attachable to the main body 16 , an extension tube 17 connected to the main body 16 , and a suction port 18 connected to the extension tube 17 .

[0039] The main body 16 comprises: a main body shell 21 having a handle 15; an electric blower 12 housed in the main body shell 21 to generate a suction negative pressure; a dust separation and dust collection unit 22 detachably arranged in the main body shell 21; and a main body control unit 23 which mainly controls the driving of the electric blower 12 and the charging and discharging of the secondary battery 11.

[0040] The main body 16 drives the electric blower 12 by the power stored in the secondary battery 11, and a negative pressure is generated by the driving of the electric blower 12, so that the generated negative suction pressure acts on the dust separation dust collection part 22. The negative suction pressure acting on the dust separation dust collection part 22 acts on the extension pipe 17 and the suction port body 18 in turn. The negative suction pressure reaching the suction port body 18 acts on the suction port 25 of the suction port body 18. The negative suction pressure acting on the suction port 25 sucks the air containing dust (hereinafter referred to as "dust-containing air") from the ground into the suction port 25. The dust-containing air sucked into the suction port 25 flows into the dust separation dust collection part 22 through the suction port body 18 and the extension pipe 17. The dust separation dust collection part 22 separates dust from the dust-containing air sucked by the negative suction pressure, captures and accumulates the separated dust, and transports the air separated from the dust to the electric blower 12. Electric blower 12 discharges the air from which dust has been separated to the outside of main body casing 21 .

[0041] Furthermore, the main body 16 includes an input unit 26 , and the input unit 26 is disposed within a range within which a user who grips the handle 15 can move his fingers.

[0042] The main body shell 21 comprises: a columnar front portion 21a, which is arranged on the extension line of the extension tube 17 and extends along the extension line of the extension tube 17; a central portion 21b, which hangs down obliquely from the front portion 21a to the rear; a cylindrical rear portion 21c, which extends rearward from the lower half of the back side of the central portion 21b; and a handle 15, which extends rearward from the upper half of the back side of the central portion 21b, is bent into an arc shape and is connected to the rear end of the upper surface of the rear portion 21c.

[0043] The front portion 21a and the central portion 21b of the main body shell 21 cooperate to hold the dust separation dust collecting portion 22 in a detachable manner. The dust separation dust collecting portion 22 has a cylindrical appearance as a whole. The front portion 21a and the central portion 21b hold the dust separation dust collecting portion 22 in a manner that the center line C of the dust separation dust collecting portion 22, in other words, the length direction is parallel to the extension line of the center line of the extension pipe 17. When the extension pipe 17 and the dust separation dust collecting portion 22 are installed in the main body shell 21, the extension line of the center line of the extension pipe 17 and the center line C of the dust separation dust collecting portion 22 are arranged on a central longitudinal section that substantially equally divides the left and right sides of the main body shell 21. That is, the long strip-shaped front portion 21a and the cylindrical dust separation dust collecting portion 22 are arranged side by side in a manner that the center lines are parallel.

[0044] The front portion 21a of the main body housing 21 is arranged on the extension line of the length direction of the extension pipe 17, that is, the extension direction, and extends in a tubular shape. The front portion 21a has a joint structure that can detach the extension pipe 17. The front portion 21a has a main body connection port 28, which is a fluid inlet of the main body 16, and fluidically connects the extension pipe 17 to the dust separation and dust collection unit 22. By removing the extension pipe 17 from the main body 16, the main body connection port 28 can also function as a suction port when the main body 16 is used as a single body.

[0045] The rear portion 21c of the main body case 21 accommodates the electric blower 12 and the main body control unit 23. The rear portion 21c has an exhaust port 29 for exhausting the exhaust gas of the electric blower 12 from the main body case 21. A battery mounting portion 31 to which the secondary battery 11 can be attached and detached is provided at the bottom of the rear portion 21c.

[0046] The central portion 21b of the main body case 21 is held in a manner that covers a portion of the rear end portion of the dust separation and dust collection portion 22 arranged side by side with the front portion 21a, and accommodates an air passage that connects the dust separation and dust collection portion 22 to the electric blower 12. The central portion 21b is connected to the rear end portion of the front portion 21a that extends substantially in a straight line and bulges toward the oblique lower rear of the main body case 21. The central portion 21b has an appearance that is inclined toward the rear of the main body case 21 in a manner that is lowered to the rear.

[0047] The handle 15 is integrally provided on the main body housing 21. The handle 15 is a portion that the user holds by hand in order to vacuum the floor with the electric vacuum cleaner 1. Therefore, the handle 15 preferably has an appropriate shape that is easily held by a person's fingers.

[0048] The handle 15 is provided between the front portion 21a and the rear portion 21c of the main body shell 21. The handle 15 extends from the rear end of the front portion 21a in the extension direction of the extension tube 17, and is bent into an arc shape and connected to the rear end of the rear portion 21c. A continuous space is provided between the handle 15 and the back surface of the central portion 21b of the main body shell 21 and between the handle 15 and the top surface of the rear portion 21c of the main body shell 21 in the left-right direction (width direction) of the main body shell 21. The fingers of the user holding the handle 15 are arranged in this space, mainly including the index finger, middle finger, ring finger and little finger.

[0049] The input unit 26 is provided near the handle 15 and is within a range within which the user holding the handle 15 can move his fingers. The input unit 26 includes a switch for accepting an operation request of the electric blower 12. The switch is electrically connected to the main body control unit 23. The user of the electric vacuum cleaner 1 can operate the input unit 26 to alternately switch the operation and stop of the electric blower 12.

[0050] The input unit 26 may also include a switch for switching the operation mode of the electric blower 12. In this case, the main control unit 23 switches the operation mode in the order of strong → medium → weak → strong → medium → weak → ... whenever receiving an operation signal from the operation mode switching switch. In addition, the input unit 26u may also include a strong operation switch, a medium operation switch, and a weak operation switch separately instead of the operation mode switching switch.

[0051] The dust separation dust collection unit 22 is arranged in an L-shaped storage space formed by the front portion 21a of the main body shell 21 and the central portion 21b of the main body shell 21. The dust separation dust collection unit 22 separates, captures, and accumulates dust from the dust-laden air flowing into the main body 16, and on the other hand, delivers the clean air from which the dust has been removed to the electric blower 12. The dust separation dust collection unit 22 is a centrifugal separation method that centrifugally separates dust from air by utilizing the mass difference between dust and air. A filter of a filtration separation method that filters dust from dust-laden air may also be provided on the downstream side of the dust separation dust collection unit 22.

[0052] In addition, the dust separation dust collection part 22 extends in a cylindrical shape along the front-to-back direction of the main body shell 21. In other words, the dust separation dust collection part 22 is a cylindrical container having a center line C extending along the front-to-back direction of the main body shell 21. The direction along the center line C of the dust separation dust collection part 22, the extension direction of the dust separation dust collection part 22, and the length direction of the dust separation dust collection part 22 are substantially the same meaning and are substantially consistent with the front-to-back direction of the main body shell 21. Therefore, the center line C of the dust separation dust collection part 22 is substantially parallel to the center line of the extension pipe 17. In addition, the dust separation dust collection part 22 is arranged side by side with the front part 21a of the main body shell 21. That is, the length direction of the dust separation dust collection part 22 imitates the length direction of the front part 21a of the main body shell 21. The diameter of the dust separation dust collection part 22 is larger than the width dimension of the front part 21a of the main body shell 21, and the dust separation dust collection part 22 protrudes to the left and right direction (width direction) of the main body 16 than the front part 21a of the main body shell 21. The left-right direction (width direction) of the main body 16 corresponds to the normal direction of the central longitudinal section of the main body 16. The center line C of the cylindrical dust separation and dust collection part 22 is substantially included in the central longitudinal section of the main body 16.

[0053] The central portion 21b of the main body housing 21 is provided with a connection port fluidically connected to the exhaust side of the dust separation and dust collection portion 22, and a separation portion downstream air duct fluidically connected to the connection port and the electric blower 12. The central portion 21b includes a portion sandwiched between the dust separation and dust collection portion 22 and the rear portion 21c of the main body housing 21. The connection port and the separation portion downstream air duct are arranged at this portion.

[0054] The connection port is arranged at a position facing the front of the central portion 21b. When the dust separation dust collection portion 22 is installed in the main body shell 21, the connection port is directly opposite to the end surface of the rear side of the dust separation dust collection portion 22. Therefore, when the dust separation dust collection portion 22 is installed in the main body shell 21, the connection port is arranged on the extension line of the center line C of the dust separation dust collection portion 22.

[0055] The suction side of the electric blower 12 is connected to the dust separation and dust collection unit 22 via a connection port and a separation unit downstream air duct. The electric blower 12 inhales air from the dust separation and dust collection unit 22 to generate a suction negative pressure. The electric blower 12 includes an impeller, a motor that generates a rotational driving force of the impeller, and a rotating shaft that transmits the rotational driving force from the motor to the impeller.

[0056] The impeller is, for example, a turbofan, and has a plurality of blades. Each blade has a twisted shape that gradually rises in the radial direction of the hub from the center of the conical hub toward the outer edge of the hub. In other words, each blade is a so-called three-dimensional wing whose airfoil or wing section changes from the leading edge to the trailing edge. The impeller is covered by a housing having an inlet.

[0057] The electric blower 12 has a cylindrical or columnar shape with the rotating shaft as the center. The electric blower 12 is housed in the main body housing 21 with the center line of the rotating shaft facing the front-rear direction of the main body housing 21 and the suction port facing the front. In addition, the center line of the rotating shaft of the electric blower 12 is substantially arranged on the extension line of the center line C of the dust separation and dust collection unit 22.

[0058] The main control unit 23 is arranged directly behind the electric blower 12. The main control unit 23 includes a microprocessor and a storage device as a storage unit for storing various operation programs, parameters, etc. executed by the microprocessor. In the case of installing a control that can select the operation mode of the electric blower 12 from a plurality of operation modes, the storage device stores various settings (independent variables) associated with a plurality of pre-set operation modes. The plurality of operation modes are associated with the output of the electric blower 12. Different input values ​​(input values ​​of the electric blower 12, target values ​​of current flowing through the electric blower 12) are set in each operation mode. Each operation mode is associated with an action request accepted by the input unit 26. The main control unit 23 selects an arbitrary operation mode corresponding to the action request of the input unit 26 from a plurality of pre-set operation modes, reads the setting of the selected operation mode from the storage device, and operates the electric blower 12 according to the setting of the read operation mode.

[0059] The input value of the electric blower 12 corresponds to the discharge amount of the secondary battery 11. The discharge amount of the secondary battery 11 is controlled according to the discharge current or discharge voltage of the secondary battery 11. It is simple and preferable to control the discharge amount of the secondary battery 11 according to the discharge current of the secondary battery 11.

[0060] The secondary battery 11 is a so-called battery pack. The electric blower 12 and the main control unit 23 are driven by discharging the power stored in the secondary battery 11, and the power consumed by the electric blower 12 and the main control unit 23 is stored in the secondary battery 11 by charging the secondary battery 11. The secondary battery 11 can be detached from the main body shell 21. In other words, the electric vacuum cleaner 1 can replace a plurality of secondary batteries 11 as appropriate for use. In the case where the charging rate of the secondary battery 11 installed in the electric vacuum cleaner 1 is reduced, the electric vacuum cleaner 1 can continue to operate by replacing the secondary battery 11 with a fully charged secondary battery 11. That is, the secondary battery 11 can also be charged while being installed in the main body shell 21, and can also be temporarily removed from the main body shell 21 and installed in a charger different from the electric vacuum cleaner 1 for charging, and then installed in the main body shell 21 again after charging. The electric vacuum cleaner 1 may be configured so that the secondary battery 11 can be easily and freely replaced, or may be configured so that the secondary battery 11 can be replaced by disassembling the main body 16 in order to replace the secondary battery 11 .

[0061] Extension pipe 17 and suction port 18 use the negative pressure applied from electric blower 12 to suck dust on the floor together with air and guide the dust to main body 16 .

[0062] The extension pipe 17 is fluidly connected to the suction side of the electric blower 12 via the main body connection port 28 of the main body shell 21 and the dust separation dust collection part 22. The extension pipe 17 has a length that substantially reaches the ground when the user holds the handle 15 of the main body 16. The end of one side of the extension pipe 17 has a joint structure that can be detached from the main body connection port 28 of the main body 16. The end of the other side of the extension pipe 17 has a joint structure that can be detached from the suction port body 18 of the main body 16. The extension pipe 17 can be extended or retracted, or it can have a fixed length that cannot be extended or retracted.

[0063] The suction port body 18 can travel or slide freely on the floor surface such as wooden floor and carpet, and has a suction port 25 on the bottom surface facing the ground in the traveling state or sliding state. In addition, the suction port body 18 has a rotating cleaning body 32 that can rotate freely and is arranged at the suction port 25, and a motor 33 that drives the rotating cleaning body 32. The end of one side of the suction port body 18 has a joint structure that can be detached from the end of the other side of the extension pipe 17. The suction port body 18 is fluidically connected to the suction side of the electric blower 12 via the extension pipe 17. The suction port body 18, the extension pipe 17 and the dust separation and dust collection unit 22 are the suction air path from the electric blower 12 to the suction port 25.

[0064] In addition, the suction port 18 may include a windmill or a turbine for driving the rotary cleaning element 32 instead of the motor 33. The windmill or the turbine is rotated by the flow of air sucked into the electric vacuum cleaner 1, so that the rotary cleaning element 32 is driven.

[0065] The electric vacuum cleaner 1 is configured such that when the input unit 26 is operated in a state where the electric blower 12 is stopped, the electric blower 12 is started. When an operation mode switching switch is installed, the electric vacuum cleaner 1 first starts the electric blower 12 in a strong operation mode, changes the operation mode of the electric blower 12 to a medium operation mode when the operation mode switching switch is operated, and changes the operation mode of the electric blower 12 to a weak operation mode when the operation mode switching switch is operated again, and the same is repeated below. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance. The input value to the electric blower 12 is the largest in the strong operation mode and the smallest in the weak operation mode. The started electric blower 12 inhales air from the dust separation dust collection unit 22, so that the dust separation dust collection unit 22 becomes a negative pressure.

[0066] The negative pressure in the dust separation dust collection part 22 acts on the suction port 25 through the main body connection port 28, the extension pipe 17 and the suction port body 18 in sequence. The electric vacuum cleaner 1 sucks the dust on the dusted surface together with the air through the negative pressure acting on the suction port 25 to vacuum the dusted surface. The dust separation dust collection part 22 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1, and on the other hand, transports the air separated from the dust-containing air to the electric blower 12. The electric blower 12 exhausts the air sucked from the dust separation dust collection part 22 to the outside of the main body 16.

[0067] Next, the suction port 18 will be described in detail.

[0068] Figure 2 It is a perspective view of the suction port body according to the embodiment of the present invention.

[0069] like Figure 2 As shown, the suction port body 18 of the present embodiment includes a suction port main body 41 having a substantially rectangular parallelepiped shape and a connection pipe 42 provided at the rear portion of the suction port main body 41 .

[0070] In addition, the front and rear, left and right, and top and bottom of the suction opening body 18 are described based on the user of the electric vacuum cleaner 1. Figure 2 The direction of the solid arrow X in FIG. 1 is the front or forward direction of the suction port body 18, and the opposite direction is the rear or backward direction. Figure 2 The direction of the solid arrow Y in FIG. 1 is the left side of the suction port body 18, and the opposite direction is the right side. Figure 2 The direction of the solid arrow Z in FIG. 1 is upward of the suction port body 18, and the opposite direction is downward. That is, Figure 2 This is a perspective view of the suction port body 18 as viewed from the front left of the user of the electric vacuum cleaner 1 .

[0071] The shape of the suction port body 41 in a top view is a rectangular shape having a short side in the front-to-back direction and a long side in the left-to-right direction. That is, the left-to-right dimension of the suction port body 41, i.e., the width dimension, is greater than the front-to-back dimension of the suction port body 41, i.e., the depth dimension. Generally, the user moves the suction port body 18 forward so that the suction port body 18 enters the undusted dusted surface f. Therefore, the horizontally long suction port body 18 can remove dust from a wider range of the dusted surface f in one action.

[0072] The air inlet body 41 includes a lower case 45 and an upper case 46 covering the lower case 45 .

[0073] The connection pipe 42 is disposed at the rear of the suction port body 41 and approximately in the center in the width direction. The connection pipe 42 is a so-called universal joint. The connection pipe 42 includes a rotating connection pipe 48 that can rotate relative to the suction port body 41 and a swinging connection pipe 49 that can swing relative to the rotating connection pipe 48.

[0074] The rotating connecting pipe 48 rotates around a center line (a line segment coinciding with the X-axis or a line segment parallel to the X-axis) extending in the front-rear direction of the suction port body 18. The center line is preferably arranged to divide the suction port body 41 into left and right parts.

[0075] The swing connection pipe 49 swings around a line segment perpendicular to the rotation center line of the rotation connection pipe 48 or a line segment parallel to the line segment perpendicular to the rotation center line of the rotation connection pipe 48. The free end of the swing connection pipe 49 is a joint that can be detached from the free end of the extension pipe 17.

[0076] Figure 3 It is a perspective view of the suction port body according to the embodiment of the present invention.

[0077] Figure 4 It is a top view of the suction port body according to the embodiment of the present invention.

[0078] Figure 5 It is a bottom view of the suction port body according to the embodiment of the present invention.

[0079] Figure 6 This is a perspective view of the suction port body according to the embodiment of the present invention as viewed from below.

[0080] Figure 7 yes Figure 4 A cross-sectional view of the suction port body of the embodiment of the present invention taken along line VII-VII.

[0081] In addition, Figure 3 In the embodiment, the upper shell 46 is removed from the suction port body 18. Figure 6 In the embodiment of the present invention, the left-hand rotating cleaning body 32L is removed from the suction port body 18.

[0082] like Figures 3 to 7 As shown, the suction port body 18 of this embodiment comprises: a suction port body 41; a pair of rotating cleaning bodies 32, which can scrape off the dust on the dusted surface f by rotating; a motor 33 as a driving source, which outputs a driving force to rotate the pair of rotating cleaning bodies 32; a supporting portion 52, which is clamped by the pair of rotating cleaning bodies 32, and supports the pair of rotating cleaning bodies 32 so that they can rotate on the same rotation center line Cr and are cantilevered; a power transmission mechanism 53, which transmits the driving force from the motor 33 to the supporting portion 52 to rotate the pair of rotating cleaning bodies 32; and a suction port body control portion 55, which controls the operation of the motor 33.

[0083] The suction port body 41 includes a cleaning element storage recess 61 in which the pair of rotating cleaning elements 32 are disposed, and a dust suction recess 62 in which negative pressure can be applied to suck dust scraped from the dust suction surface f by the pair of rotating cleaning elements 32 .

[0084] The cleaning body storage recess 61 is arranged along the front edge of the suction port body 41 and covers the entire width of the suction port body 41. The cleaning body storage recess 61 defines a cleaning body chamber 63 in which the rotating cleaning body 32 can be arranged. The cleaning body chamber 63 is open toward the bottom surface 41b of the suction port body 41. The cleaning body chamber 63 stores the rotating cleaning body 32 so that a part of the rotating cleaning body 32 is exposed from the bottom surface 41b of the suction port body 41. When the suction port body 4 is grounded with the bottom surface 41b facing the dust surface f, a part of the rotating cleaning body 32 exposed to the outside of the cleaning body chamber 63 is pressed against the dust surface f.

[0085] In the upward view of the suction port body 41, the dust collection recess 62 is arranged behind the cleaning body storage recess 61 and along the cleaning body storage recess 61. Therefore, in the upward view of the suction port body 41, the dust collection recess 62 is arranged behind the pair of rotating cleaning bodies 32 and the support portion 52 and along the pair of rotating cleaning bodies 32 and the support portion 52. The dust collection recess 62 defines a suction chamber 65 to which negative pressure can be applied through the connecting pipe 42. The suction chamber 65 is open to the bottom surface 41b of the suction port body 41. The projection surface of the dust collection recess 62 relative to the bottom surface 41b of the suction port body 41 is equivalent to the suction port 25 of the suction port body 18. The suction port 25 faces the dust collection surface f without being blocked by the pair of rotating cleaning bodies 32. That is, the suction chamber 65 is an open space having the suction port 25. The dust collection recess 62 is connected to the connecting pipe 42 at the central part of the suction port body 41 in the width direction.

[0086] In addition, the dust suction recess 62 extends over the entire width of the suction port body 41 and reaches the left and right sides of the suction port body 41. In other words, the dust suction recess 62 extends to the vicinity of each free end 32t of a pair of rotating cleaning bodies 32. That is, the suction port 25 is open to the left and right sides of the suction port body 41. The suction port 25 is continuously open over the bottom surface 41b and the left and right sides of the suction port body 41. Therefore, the suction port body 18 can inhale dust on the dust collection surface f facing the bottom surface 41b of the suction port body 41 through the action of negative pressure over the entire width of the suction port body 41.

[0087] Furthermore, the dust collection recess 62 is shallower as it is closer to the left and right sides of the suction port body 41, and deeper as it is closer to the central portion in the width direction of the suction port body 41. In other words, the dust collection recess 62 is inclined in such a manner that it is deeper as it is closer to the center of the suction port body 41. By this inclination, the wind path cross-sectional area of ​​the dust collection recess 62 is reduced more as the position approaches the left and right sides from the central portion of the suction port body 41. This inclination smoothly guides the air sucked into the suction chamber 65 extending slenderly in the width direction of the suction port body 18 to the central portion of the suction chamber 65 connected to the connecting pipe 42. In addition, this inclination increases the wind speed of the air sucked into the suction chamber 65 at the position close to the left and right sides of the suction port body 41.

[0088] In addition, the suction port body 41 includes a partition 68, which is located between the cleaning body storage recess 61 and the dust suction recess 62 and extends downward toward the bottom surface 41b of the suction port body 41. The partition 68 does not completely separate the cleaning body storage recess 61 from the dust suction recess 62, but separates the two chambers to such an extent that the cleaning body chamber 63 and the suction chamber 65 are connected even when the suction port body 41 is grounded with the bottom surface 41b facing the dust suction surface f. Therefore, when the rotary cleaning body 32 is rotated so as to scrape the dust on the dust suction surface f toward the rear of the suction port body 41, the scraped dust is effectively put into the suction chamber 65.

[0089] The cleaning body storage recess 61 and the dust collection recess 62 are provided in the lower housing 45. In addition, the suction port body 41 is provided with a narrow air passage pipe 72, which is fixed to the lower housing 45 so that the shape of the suction chamber 65 and the shape of the air passage in the connecting pipe 42 are smoothly connected continuously. The narrow air passage pipe 72 defines an air passage that connects the suction chamber 65 with the air passage in the connecting pipe 42.

[0090] Furthermore, the suction port body 41 is provided with a plurality of rollers 75 that contact the dust collection surface f and support the suction port body 41. The plurality of rollers 75 are arranged on the bottom surface 41b of the suction port body 41. The plurality of rollers 75 include a pair of rollers 75 arranged near the rear of the dust collection recess 62 and at the left and right ends of the suction port body 41, and a roller 75 arranged at the rear center of the suction port body 41.

[0091] In addition, the suction port body 41 is provided with a linear cleaning body 76, which is arranged at the rear of the dust suction recess 62 and extends continuously along the dust suction recess 62. The linear cleaning body 76 can be, for example, a fluffy body or a rubber scraper. The linear cleaning body 76 increases the negative pressure of the suction port 25 by blocking the air flow from the rear of the suction port body 41 toward the suction port 25. The linear cleaning body 76 is sandwiched between a pair of rollers 75 arranged at the left and right ends of the suction port body 41, and is arranged along the axle of the pair of rollers 75. Therefore, even when the suction port body 41 is in contact with the dust suction surface f, the plurality of rollers 75 can ensure the distance between the bottom surface 41b of the suction port body 41 and the dust suction surface f. That is, the linear cleaning body 76 will not be crushed by the suction port body 18.

[0092] A space is defined between the lower shell 45 and the upper shell 46 of the suction port body 41. The space includes a motor room 77 for accommodating the motor 33, a machine room 78 for accommodating the power transmission mechanism 53, and a control room 79 for accommodating the suction port body control unit 55. The motor room 77, the machine room 78, and the control room 79 may be connected or disconnected. The motor room 77, the machine room 78, and the control room 79 are arranged at a position behind the cleaning body storage recess 61 in a plan view of the suction port body 41.

[0093] The machine chamber 78 is disposed between the connection pipe 42 and the cleaning element storage recess 61 in a plan view of the suction port body 41 .

[0094] In a top view of the suction port body 41, the motor chamber 77 is arranged on either side of the machine chamber 78. The motor chamber 77 accommodates the cylindrical motor 33 at a position as close as possible to the cleaning body storage recess 61. That is, the bottom of the motor 33 is arranged at a position lower than the top of the cleaning body storage recess 61. In such a configuration of the motor 33 and the structure of the motor chamber 77, even if the motor 33 is arranged at a position higher than the pair of rotating cleaning bodies 32, the height of the suction port body 41 can be suppressed to be lower than the sum of the height (diameter) of the pair of rotating cleaning bodies 32 and the height (diameter) of the motor 33.

[0095] In a plan view of the inlet body 41, the control chamber 79 is disposed on either the left or right side of the connection pipe 42. The motor chamber 77 and the control chamber 79 may be disposed on either the left or right side of the inlet body 41, or may be disposed on both sides.

[0096] A pair of rotating cleaning bodies 32 are rotatably arranged on the suction port body 41 via a supporting portion 52. The pair of rotating cleaning bodies 32 includes a left-rotating cleaning body 32L arranged on either side of the suction port body 41, such as the left half, and a right-rotating cleaning body 32R arranged on either side of the suction port body 41, such as the right half. The left-rotating cleaning body 32L is arranged on the left side of the supporting portion 52 (on the right side in the front view of the suction port body 41), and the right-rotating cleaning body 32R is arranged on the right side of the supporting portion 52 (on the left side in the front view of the suction port body 41). That is, a pair of rotating cleaning bodies 32 sandwich the supporting portion 52. A pair of rotating cleaning bodies 32 are respectively supported by the supporting portion 52 so as to be rotatably driven around the same rotation center line Cr extending in the left and right directions of the suction port body 41. That is, the rotation center line Cr of the pair of rotating cleaning bodies 32 faces the width direction of the suction port body 41.

[0097] A pair of rotating cleaning bodies 32 respectively have a supporting end 32r close to the supporting portion 52, and a free end 32t away from the supporting portion 52. The supporting end 32r of the left-rotating cleaning body 32L and the supporting end 32r of the right-rotating cleaning body 32R sandwich the supporting portion 52. The distance between the free end 32t of the left-rotating cleaning body 32L and the free end 32t of the right-rotating cleaning body 32R is substantially equivalent to the entire width of the pair of rotating cleaning bodies 32. The entire width of the pair of rotating cleaning bodies 32 substantially covers the entire width of the suction port body 41. In other words, the free end 32t of the left-rotating cleaning body 32L is arranged at the left end of the suction port body 41, and the free end 32t of the right-rotating cleaning body 32R is arranged at the right end of the suction port body 41. The entire width of the pair of rotating cleaning bodies 32 may also exceed the width dimension of the suction port body 41. The free end 32t of the left-hand rotating cleaning element 32L may protrude outward from the left side wall of the suction port body 41 , and the free end 32t of the right-hand rotating cleaning element 32R may protrude outward from the right side wall of the suction port body 41 .

[0098] Furthermore, each of the pair of rotary cleaning bodies 32 includes a shaft core portion 81 extending from the support end 32 r to the free end 32 t , and a cleaning member 82 provided on the outer peripheral portion of the shaft core portion 81 .

[0099] The cleaning member 82 is configured so that the supporting end 32r side of the rotating cleaning body 32 is ahead of the free end 32t side in the rotation direction of the rotating cleaning body 32. The cleaning member 82 is configured so that the rotation of the rotating cleaning body 32 is wound in a spiral shape from the supporting end 32r of the rotating cleaning body 32 toward the free end 32t. The cleaning member 82 is wound around the rotating cleaning body 32 in a manner that a spiral is drawn from the supporting end 32r of the rotating cleaning body 32 toward the free end 32t when the rotating cleaning body 32 is rotated. That is, a pair of rotating cleaning bodies 32 have a spiral cleaning member 82 extending in different directions. The cleaning member 82 can be wound around the shaft core 81 for more than one circle, that is, more than 360 degrees, when viewed from the axial direction, or it can be wound within a range smaller than one circle.

[0100] The cleaning component 82 is a brush bristle, i.e., a bristle. The cleaning component 82 radially surrounds the outer periphery of the shaft core portion 81 and depicts a plurality of spirals. For example, the cleaning component 82 depicts 8 spirals that spirally surround the shaft core portion 81. The plurality of spirals depicted by the cleaning component 82 may all protrude from the shaft core portion 81 with the same length, or may have different protruding lengths. In addition, the plurality of spirals depicted by the cleaning component 82 may have the same rigidity, or may have different rigidities. The rigidity of the cleaning component 82 is also referred to as the rigidity of the bristles. Furthermore, the plurality of spirals depicted by the cleaning component 82 may also surround the shaft core portion 81 without a gap. In this case, the plurality of spirals may be distinguished based on at least one of the rigidity of the bristles of the cleaning component 82, the density of the cleaning component 82, and the protruding length of the cleaning component 82.

[0101] The cleaning member 82 of the left-rotating cleaning body 32L is wound around the shaft core 81 in the counterclockwise direction from the supporting end 32r toward the free end 32t when the free end 32t is observed from the supporting end 32r, and the cleaning member 82 of the right-rotating cleaning body 32R is wound around the shaft core 81 in the clockwise direction from the supporting end 32r toward the free end 32t when the free end 32t is observed from the supporting end 32r. Therefore, the cleaning member 82 of the left-rotating cleaning body 32L is wound around the shaft core 81 in the counterclockwise direction from the supporting end 32r toward the free end 32t when the left side of the suction port body 41 is observed from the supporting portion 52, and the cleaning member 82 of the right-rotating cleaning body 32R is wound around the shaft core 81 in the clockwise direction from the supporting end 32r toward the free end 32t when the right side of the suction port body 41 is observed from the supporting portion 52.

[0102] Therefore, when a pair of rotating cleaning bodies 32 are rotated so as to scrape the dust on the dusted surface f toward the rear of the suction port body 41, the contact portion between the cleaning component 82 on the supporting end 32r side of the rotating cleaning body 32 and the dusted surface f moves continuously from the portion of the cleaning component 82 close to the supporting end 32r to the portion close to the free end 32t.

[0103] The pair of rotary cleaning elements 32 may be mostly housed in the cleaning element chamber 63, or most of the cleaning member 82 may be exposed outside the cleaning element chamber 63. The exposed portion of the rotary cleaning element 32 is preferably a portion of the front surface of the suction port body 41.

[0104] The left and right side walls 83 of the cleaning element storage recess 61 defining the cleaning element chamber 63 may expose or cover the free ends 32t of the pair of rotating cleaning elements 32. The side wall 83 that exposes the free ends 32t only needs to have an arc-shaped edge 83e that follows the outer shape of the rotating cleaning element 32. The side wall 83 ( Figure 6 The side wall 83 (shaded area in the figure) has an inner wall surface 83i located on the extension line of each rotation center line Cr of the rotating cleaning body 32 and opposite to the free end 32t. The inner wall surface 83i of the cleaning body storage recess 61 can be in contact with the free end 32t of the rotating cleaning body 32, or can be separated from the free end 32t of the rotating cleaning body 32 with a gap. The side wall 83 is as thin as possible within the limit of having a wall thickness that can prevent obstacles from contacting the free end 32t.

[0105] The gap between the suction port body 41 and the free ends 32t of a pair of rotating cleaning bodies 32 is preferably narrower than the gap between the suction port body 41 and the portion other than the free ends 32t of the pair of rotating cleaning bodies 32. At least one of the rotating cleaning body 32 and the side wall 83 preferably has a sealing portion 84 disposed between the free ends 32t of the rotating cleaning body 32 and the side wall 83. The sealing portion 84 is disposed between the suction port body 41 and the pair of rotating cleaning bodies 32. The sealing portion 84 is not a component that completely blocks the gap between the rotating cleaning body 32 and the side wall 83, but a component that does not hinder the discharge of linear dust that escapes from the free ends 32t of the rotating cleaning body 32, such as fluffing. When the sealing portion 84 is disposed at the free ends 32t of the rotating cleaning body 32, the sealing portion 84 rotates integrally with the rotating cleaning body 32 and rotates at the same rotation speed as the cleaning component 82. The sealing portion 84 may also be disposed at the side wall 83 of the suction port body 41. The seal portion 84 provided on the rotary cleaning body 32 may or may not be in contact with the side wall 83. The seal portion 84 provided on the side wall 83 of the suction port body 41 may or may not be in contact with the rotary cleaning body 32.

[0106] The motor 33 is preferably configured so that, in a top view of the suction port body 41, its output shaft 33a is parallel to the rotation center line Cr of a pair of rotating cleaning bodies 32. The motor 33 is separated from the left and right ends of the suction port body 41 and is configured near the central part of the suction port body 41 in the width direction. The weight of the motor 33 is heavier than that of other components of the suction port body 18. Therefore, when the motor 33 is configured at one of the left and right ends of the suction port body 41, the center of gravity of the suction port body 18 will be away from the connecting pipe 42, and the operability of the suction port body 18 will be reduced. By configuring the motor 33 near the central part in the width direction of the suction port body 41 as in the suction port body 18 of the present embodiment, the center of gravity of the suction port body 18 is close to the connecting pipe 42, and the operability of the suction port body 18 is improved.

[0107] The motor 33 rotates the pair of rotary cleaning bodies 32 in a direction to sweep the dust on the dust collection surface f toward the suction port 25 when the suction port body 41 is disposed on the dust collection surface f. The motor 33 rotates the pair of rotary cleaning bodies 32 in a rotation direction to assist the suction port body 18 in advancing.

[0108] The support portion 52 is sandwiched between a pair of rotating cleaning bodies 32. The support portion 52 includes a bearing housing 85 fixed to the lower shell 45 of the suction port body 41. The support portion 52 can be arranged in the cleaning body chamber 63, or the cleaning body chamber 63 can be separated to the left and right. In other words, the cleaning body storage recess 61 can define a cleaning body chamber 63 for configuring the support portion 52 and a pair of rotating cleaning bodies 32 together, or can define a pair of left and right cleaning body chambers 63 in which a pair of rotating cleaning bodies 32 are separately configured.

[0109] The bottom surface of the bearing housing 85 is a part of the bottom surface 41b of the suction port body 41. A nonwoven fabric is preferably provided on the bottom surface of the bearing housing 85. The nonwoven fabric preferably has a hair length of a degree of contact with the suction surface f when the bottom surface 41b is directed toward the suction surface f and the suction port body 41 is grounded. The nonwoven fabric hinders the air flow in the gap between the bearing housing 85 and the suction surface f to increase the negative pressure of the suction chamber 65, and improves the dust removal performance in the area between the pair of rotating cleaning bodies 32 disconnected from the left and right. When the bottom surface of the bearing housing 85 is separated from the suction surface f, the cleaning body storage recess 61 defines a cleaning body chamber 63 in which the support portion 52 and a pair of rotating cleaning bodies 32 are arranged together. When the bottom surface of the bearing housing 85 or the nonwoven fabric provided on the bottom surface of the bearing housing 85 is close to the suction surface f, the cleaning body storage recess 61 defines a pair of left and right cleaning body chambers 63 in which a pair of rotating cleaning bodies 32 are separately arranged.

[0110] The power transmission mechanism 53 includes: a driving pulley 86, which is provided to rotate integrally with the output shaft 33a of the motor 33; a driven pulley 87, which is connected to rotate integrally with the pair of rotating cleaning bodies 32; and a belt 88, which transmits the driving force output by the motor 33 from the driving pulley 86 to the driven pulley 87. The reduction ratio of the power transmission mechanism 53 is set so that the pair of rotating cleaning bodies 32 can be rotated by the torque that can be output by the motor 33. The power transmission mechanism 53 transmits the driving force of the motor 33 to the pair of rotating cleaning bodies 32, so that the pair of rotating cleaning bodies 32 rotate in the forward rotation direction of the auxiliary suction port body 18.

[0111] Alternatively, the motor 33 and the power transmission mechanism 53 may be housed inside the rotary cleaning body 32 , that is, inside the shaft core portion 81 .

[0112] Furthermore, the support portion 52 may support the pair of rotary cleaning bodies 32 so as to be independently rotatable, and the power transmission mechanism 53 may independently transmit the driving force to the pair of rotary cleaning bodies 32. That is, the support portion 52 and the power transmission mechanism 53 may be separated into left and right parts.

[0113] The nozzle control unit 55 operates the motor 33 using power supplied from the main body 16 via the extension tube 17 .

[0114] When the suction port body 18 is moved forward on the dusted surface f, the pair of rotating cleaning bodies 32 rotating in the direction of assisting the forward movement of the suction port body 18 scrapes the dust on the dusted surface f in the direction opposite to the forward movement of the suction port body 18. That is, the pair of rotating cleaning bodies 32 rotating in the direction of assisting the forward movement of the suction port body 18 scrapes the dust on the dusted surface f toward the dust collecting recess 62 disposed behind the cleaning body storage recess 61. The scraped dust is sucked into the narrow air passage pipe 72 by the negative pressure acting on the dust collecting recess 62, and is captured by the dust separation dust collecting unit 22.

[0115] Here, in the case where the dust on the dust collection surface f contains thread-like dust such as hair, the pair of rotating cleaning bodies 32 presses a portion of the thread-like dust, such as the middle portion, against the dust collection surface f, while sending a portion of the thread-like dust to the rear of the pair of rotating cleaning bodies 32. The portion of the thread-like dust sent to the rear of the pair of rotating cleaning bodies 32 is sucked in by the negative pressure acting on the dust collection recess 62. That is, the suction port body 18 of the present embodiment is intended to suck in a portion of the thread-like dust that is located behind the pair of rotating cleaning bodies 32 and is not pressed by the pair of rotating cleaning bodies 32 by the negative pressure acting on the dust collection recess 62, while the middle portion of the thread-like dust is pressed against the dust collection surface f by the pair of rotating cleaning bodies 32. Thus, the suction port body 18 of the present embodiment prevents the thread-like dust from being wound around the pair of rotating cleaning bodies 32.

[0116] However, a part of the thread-like dust that is not pressed by the pair of rotating cleaning elements 32 may not be able to ride on the air flow caused by the negative pressure acting on the dust suction recess 62 and may be wound around the pair of rotating cleaning elements 32 .

[0117] Therefore, the suction port body 18 of the present embodiment has a spiral cleaning member 82, and the cleaning member 82 is configured so that the contact portion between the pair of rotating cleaning bodies 32 and the dusted surface f moves continuously from the portion close to the support end 32r to the portion close to the free end 32t. The contact portion between the spiral cleaning member 82 and the dusted surface f always moves continuously from the support portion 52 toward the free end 32t of the pair of rotating cleaning bodies 32. When observed in the pair of rotating cleaning bodies 32, the pair of rotating cleaning bodies 32 rotate in a direction that produces the following illusion: the spiral drawn by the cleaning member 82 of the left-rotating cleaning body 32L and the spiral drawn by the cleaning member 82 of the right-rotating cleaning body 32R are separated from each other with the support portion 52 as the center. Therefore, the contact part between the spiral cleaning component 82 of the left-rotating cleaning body 32L and the dusted surface f and the contact part between the spiral cleaning component 82 of the right-rotating cleaning body 32R and the dusted surface f move away from each other around the support part 52 as the pair of rotating cleaning bodies 32 rotate.

[0118] Therefore, the thread-like dust wound around the pair of rotating cleaning bodies 32 is always subjected to a force sent from the support portion 52 to the free ends 32t of the pair of rotating cleaning bodies 32. As a common example, for example, a force similar to the force acting on the thread wound around the finger when the thread wound around the finger is pulled toward the front end of the finger is applied to the thread. Due to this force, even if a part of the thread-like dust is wound around the pair of rotating cleaning bodies 32, the thread-like dust will be pulled out from the pair of rotating cleaning bodies 32 and detached.

[0119] If the thread-like dust wound around the rotating cleaning body 32 is concentrated at the supporting end 32r of the rotating cleaning body 32, it will be sandwiched between the supporting portion 52 and the rotating cleaning body 32, and may hinder the rotation of the rotating cleaning body 32. The rotating cleaning body 32 of the suction port body 18 of this embodiment sends the wound thread-like dust toward the free end 32t, so the wound thread-like dust does not hinder the rotation.

[0120] Furthermore, the thread-like dust pulled out and separated from each rotating cleaning body 32 is quickly sucked into the dust suction recess 62 extending near the free end 32t of each rotating cleaning body 32. That is, the suction port body 18 of this embodiment can not only discharge the thread-like dust wound around the rotating cleaning body 32 from the free end 32t of the rotating cleaning body 32, but also can quickly suck it in and recover it.

[0121] Figure 8 yes Figure 5 A cross-sectional view of the suction port body of an embodiment of the present invention taken along line VIII-VIII.

[0122] Fig. 9 It is a three-dimensional cross-sectional view of the suction port body according to the embodiment of the present invention.

[0123] Fig.10 It is a cross-sectional view of the rotary cleaning body and the connection mechanism according to the embodiment of the present invention.

[0124] Fig.11 It is a perspective view of a connection mechanism according to an embodiment of the present invention.

[0125] Fig.12 It is a perspective view of a convex portion of the connection mechanism according to the embodiment of the present invention.

[0126] Fig.13 It is a perspective view of the recessed portion of the connection mechanism according to the embodiment of the present invention.

[0127] Fig.14 It is a perspective view of a connection release body of the connection mechanism according to the embodiment of the present invention.

[0128] like Figures 8 to 14 As shown, the suction port body 18 of this embodiment includes: a pair of rotating cleaning bodies 32; a support portion 52 that supports the rotating cleaning bodies 32 so as to be rotatable and cantilevered; and a connecting mechanism 89 that connects the pair of rotating cleaning bodies 32 and the support portion 52 so as to be detachable. Therefore, the user can remove the rotating cleaning bodies 32 from the suction port body 18 for inspection, and install the inspected rotating cleaning bodies 32 to the suction port body 18.

[0129] The pair of rotary cleaning bodies 32 each include a cylindrical shaft core 81 having a cavity 32c. The support end of the shaft core 81 is also the support end 32r of the rotary cleaning body 32, the free end of the shaft core 81 is also the free end 32t of the rotary cleaning body 32, and the cavity 32c of the shaft core 81 is also the cavity 32c of the rotary cleaning body 32.

[0130] The support portion 52 includes: a bearing housing 85; a bearing 91, which is held by the bearing housing 85 and the lower housing 45; a support shaft base 92, which is supported by the bearing 91 so as to be rotatable; and a pair of support shafts 93, which rotate integrally with the support shaft base 92 and are connected to a pair of rotating cleaning bodies 32 so as to rotate integrally.

[0131] The bearing 91 is held between the bearing housing 85 and the lower housing 45 .

[0132] A pair of supporting shafts 93 are respectively inserted into the hollow 32c of the shaft core 81 from the supporting end 32r side and connected to the rotating cleaning body 32. A pair of supporting shafts 93 extend in a straight line along the rotation center line Cr of the rotating cleaning body 32. A pair of supporting shafts 93 include a left supporting shaft 93L inserted into the shaft core 81 of the left rotating cleaning body 32L, and a right supporting shaft 93R inserted into the shaft core 81 of the right rotating cleaning body 32R. The left supporting shaft 93L and the right supporting shaft 93R rotate integrally in the same direction. A pair of supporting shafts 93 and the supporting shaft base 92 are preferably integrally formed products, and in order to easily obtain sufficient strength for cantilever supporting the rotating cleaning body 32, preferably have a metal shaft core or a metal integrally formed product.

[0133] The connecting mechanism 89 connects the pair of rotating cleaning bodies 32 to the supporting part 52 in a detachable manner. The connecting mechanism 89 includes a recessed portion 95 integrally provided in the supporting part 52, and a convex portion 96 provided in the hollow 32c of the shaft core portion 81. The convex portion 96 and the recessed portion 95 are hooked to each other in a releasable hooking manner, preventing the rotating cleaning body 32 from being separated from the supporting part 52, that is, the supporting shaft portion 93 from being pulled out of the hollow 32c of the shaft core portion 81.

[0134] The recessed portion 95 is provided at the front end of the support shaft portion 93. The recessed portion 95 is a step realized by an umbrella-shaped portion provided at the free end of the support shaft portion 93, and has an appropriate shape so that the protrusion 96 can be hooked in a manner not to be pulled out in a direction away from the support shaft portion 93. The recessed portion 95 is arranged in the cavity 32c from the support end 32r.

[0135] The convex portion 96 is provided at the front end portion of a cantilever beam-shaped arm 98, and the arm 98 extends from a sleeve-shaped base 97 disposed on the support end 32r side of the hollow 32c of the shaft core portion 81 toward the inner side of the hollow 32c, that is, toward the free end 32t. The convex portion 96 protrudes toward the radial inner side of the base 97. The arm 98 can be bent at least toward the radial outer side of the base 97. By bending the arm 98 toward the radial outer side of the base 97, the convex portion 96 hooked on the recess 95 can be pulled out of the recess 95 in a manner close to the inner peripheral surface of the shaft core portion 81. In addition, by bending the arm 98 toward the radial outer side of the base 97, the convex portion 96 advancing toward the recess 95 in the hollow 32c of the shaft core portion 81 can be hooked on the recess 95. The concave portion 95 and the convex portion 96 have inclined surfaces that bend the arm 98 toward the radially outer side of the base 97 when they come into contact with each other, so that the arm 98 can be bent toward the radially outer side of the base 97 when the convex portion 96 and the concave portion 95 are hooked with each other. The inclined surface of the convex portion 96 faces the root side of the arm 98, and the inclined surface of the concave portion 95 faces the protruding end of the support shaft portion 93.

[0136] There are preferably a plurality of convex portions 96. That is, there are preferably a plurality of arms 98 provided with the convex portions 96. The plurality of arms 98 are preferably arranged in a ring shape. The arms 98 arranged in a ring shape hook the plurality of convex portions 96 arranged in a ring shape on the recessed portion 95. The plurality of convex portions 96 arranged in a ring shape hooked on the recessed portion 95 can evenly disperse and firmly receive the force acting on the support shaft portion 93 in the direction of pulling out from the shaft core portion 81.

[0137] The concave portion 95 may be provided in the hollow 32c of the shaft core portion 81, and the convex portion 96 may be provided integrally in the support portion 52. That is, the connection mechanism 89 only needs to include the following concave portion 95 and convex portion 96: any one of the concave portion 95 and the convex portion 96 is provided integrally in the support portion 52, and any other is provided in the hollow 32c of the shaft core portion 81, and they are hooked to each other in a manner that can be released from the hook, so as to prevent the rotary cleaning body 32 from being separated from the support portion 52. In addition, any one of the concave portion 95 and the convex portion 96 integrally provided in the support portion 52 only needs to be able to be arranged in the hollow 32c of the shaft core portion 81 from the support end 32r.

[0138] In addition, the connecting mechanism 89 includes: a connecting release body 101, which is arranged in the cavity 32c of the shaft core portion 81 and releases the mutual hooking of the recessed portion 95 and the protruding portion 96 when pressed from the free end 32t toward the supporting end 32r; and a retaining force generating portion 102, which generates a force to move the connecting release body 101 in the direction from the supporting end 32r toward the free end 32t to maintain the mutual hooking of the recessed portion 95 and the protruding portion 96.

[0139] The connection release body 101 is arranged inside the cavity 32c and is located inside the cavity 32c. The rotary cleaning body 32 can be used near a wall connected to the dusted surface f or furniture arranged on the dusted surface f. The free end 32t is close to the left and right ends of the suction port 18. Therefore, when the connection release body 101 is exposed to the outside of the rotary cleaning body 32, the connection release body 101 may contact obstacles such as walls and furniture. When the connection release body 101 contacts an obstacle and is pressed in, the connection between the rotary cleaning body 32 and the support part 52 by the connection mechanism 89 will be accidentally released. As a result, the rotary cleaning body 32 sometimes falls off. Therefore, by arranging the connection release body 101 inside the cavity 32c and being located inside the free end 32t, the accidental connection release between the rotary cleaning body 32 and the support part 52 can be avoided. That is, the accidental detachment of the rotary cleaning body 32 can be avoided.

[0140] The disconnecting body 101 includes an inclined surface 105 that allows the arm 98 having the protrusion 96 to bend toward the inner peripheral surface of the shaft core 81 , and a rod body 106 of appropriate length that extends from the free end 32 t to the front end of the arm 98 .

[0141] When the coupling release body 101 is pressed from the free end 32t toward the support end 32r, the inclined surface 105 contacts the front end of the arm 98 and guides it toward the inner peripheral surface of the shaft core 81. There are a plurality of inclined surfaces 105, and they are arranged in a tapered shape that tapers toward the front end of the coupling release body 101 so that the plurality of arms 98 can bend substantially simultaneously.

[0142] The rod body 106 has appropriate buckling strength so as to be able to press the inclined surface 105 against the arm 98 to bend it.

[0143] Furthermore, the connection mechanism 89 includes a guide rod 107 and a guide hole 108, one of which is provided on the connection release body 101 and the other is provided on the support shaft portion 93, and is fitted along the rotation center line Cr of the rotating cleaning body 32. The guide rod 107 and the guide hole 108 guide the movement of the connection release body 101.

[0144] The holding force generating portion 102 includes: a coil spring 109 sandwiched between a sleeve-shaped base 97 having a protrusion 96 and a connection release body 101; and a sleeve-shaped spring seat 111 integrally provided on the connection release body 101 and in contact with the coil spring 109. The spring seat 111 is arranged to surround the protrusion 96 and the recess 95. The spring seat 111 has a slit-shaped opening 112 that avoids the bending of the arm 98 having the protrusion 96. The number of the openings 112 is the same as that of the arms 98. The arms 98 preferably enter the openings 112 within a range where the bending is not hindered. The overlap of the arms 98 and the openings 112 prevents the connection release body 101 from rotating around the rotation center line Cr of the rotary cleaning body 32, and the connection release body 101 is positioned so that the arms 98 do not overlap with the non-opening portion of the spring seat 111 and hinder the bending of the arms 98.

[0145] Furthermore, the connecting mechanism 89 has a second recess 115 and a second convex portion 116, either of which is integrally provided in the support portion 52, and the other is provided in the cavity 32c of the shaft core portion 81, and is hooked to each other in a manner that can release the hook, so that the rotating cleaning body 32 and the support portion 52 are rotated and integrated. There are a plurality of second recesses 115 and second convex portions 116, respectively, and they are arranged in an annular shape. The second recess 115 and the second convex portion 116 are engaged in a key-like manner to transmit torque from the support portion 52 to the rotating cleaning body 32. The second recess 115 and the second convex portion 116 are also referred to as so-called spline shafts, spline holes, fine-tooth shafts, and fine-tooth holes. One of the second recess 115 and the second convex portion 116, which is equivalent to a spline shaft and a fine-tooth shaft, is arranged at a position closer to the root of the support shaft portion 93 than the recess 95 and the convex portion 96. The so-called key groove-shaped portion recessed toward the center line of the support shaft portion 93 can also reach the front end of the support shaft portion 93 and be connected to the recessed portion 95. Therefore, the connection mechanism 89 supports the force that attempts to separate the rotary cleaning body 32 from the support portion 52 by hooking the recessed portion 95 and the convex portion 96, and supports the torque transmitted from the support portion 52 to the rotary cleaning body 32 by hooking the second recessed portion 115 and the second convex portion 116. The sharing of these functions makes the structure of both parties easy and simple, and the connection mechanism 89 can be accommodated in the cavity 32c of the rotary cleaning body 32.

[0146] Fig.15 It is a front view of the suction port body according to the embodiment of the present invention.

[0147] like Fig.15 As shown, the rear wall of the cleaning element storage recess 61 defining the cleaning element chamber 63 of the suction port 18 of the present embodiment is connected to a partition 68 that partitions the cleaning element storage recess 61 from the dust collection recess 62 .

[0148] The lower edge of the partition 68, that is, the edge 68e of the partition 68 that separates the cleaning body chamber 63 from the suction chamber 65, may be parallel to the bottom surface 41b of the suction port body 41 and be straight, may be close to the bottom surface 41b at the center of the width direction of the suction port body 41 and away from the bottom surface 41b at the left and right ends of the suction port body 41, or may be away from the bottom surface 41b at the center of the width direction of the suction port body 41 and close to the bottom surface 41b at the left and right ends of the suction port body 41. The partition 68 having the edge 68e (edge ​​68e shown by the dotted line) whose left and right ends are farther from the bottom surface 41b than the center in the width direction throttles the flow of air at the center where the negative pressure is greater and close to the connection pipe 42, and increases the flow of air at the left and right ends away from the connection pipe 42 and where the negative pressure is less, thereby improving the dust removal stress at the two ends of the suction port body 41 in the width direction, which is generally easy to reduce. The partition portion 68 has an edge 68e (edge ​​68e shown by a solid line) whose left and right ends are closer to the bottom surface 41b than the central portion in the width direction. More air flows in the central portion close to the connecting pipe 42 where the effect of negative pressure is greater, and the flow of air is throttled at the left and right ends away from the connecting pipe 42 where the effect of negative pressure is smaller, thereby maximizing the dust removal capacity of the central portion in the width direction of the suction port body 18.

[0149] Fig.16 It is a perspective view of another example of the suction port main body of the suction port body according to the embodiment of the present invention.

[0150] Fig.17 It is a cross-sectional view of another example of the suction port main body of the suction port body according to the embodiment of the present invention.

[0151] like Fig.16 as well as Fig.17 As shown, the suction port body 18 of this embodiment may also have a side wall 83 that covers each free end 32t of a pair of rotating cleaning bodies 32. The side wall 83 ( Figure 6 The shaded area) has an inner wall surface 83i that is located on the extension line of the rotation center line Cr of the pair of rotating cleaning bodies 32 and faces the free end 32t. Fig.17 In the example of FIG. 5 , the inner wall surface 83i of the cleaning element storage recess 61 is separated from the free end 32t of the rotary cleaning element 32 with a gap therebetween.

[0152] The side wall 83 includes a cover 117 that can be detached from the suction port body 41. When the cover 117 is removed from the side wall 83 of the suction port body 41, Figure 6 As shown, an arc-shaped edge 83e appears along the outer shape of the rotary cleaning body 32. That is, when the cover 117 is removed from the side wall 83 of the suction port body 41, the rotary cleaning body 32 can be easily attached to and detached from the suction port body 41.

[0153] The inlet body 41 includes a holding portion 118 that holds the cover 117 so that it can be detached or opened and closed. The holding portion 118 is preferably arranged on the upper surface or back surface of the inlet body 41, avoiding the side and front of the inlet body 41. The holding portion 118 only needs to include a concave portion and a convex portion that are provided on the cover 117 and the inlet body 41 and hooked to each other. The cover 117 only needs to be able to be removed by releasing the hook of the concave portion and the convex portion of the holding portion 118, or can be opened and closed like a hinge with the hook of the concave portion and the convex portion of the holding portion 118 as a fulcrum.

[0154] Next, another example of the air inlet body 18 of the present embodiment will be described. In the air inlet bodies 18A, 18B, and 18C described in each example, the same components as those of the air inlet body 18 of the first example are denoted by the same reference numerals, and duplicate descriptions are omitted.

[0155] Fig.18 It is a schematic diagram showing a second example of the suction port body according to the embodiment of the present invention.

[0156] like Fig.18 As shown, the suction port body 18A of the second example of the present embodiment includes a pair of rotating cleaning bodies 32A, and when the bottom surface 41b is directed toward the dusted surface f and the suction port body 41 is grounded, the free end 32t side of the pair of rotating cleaning bodies 32A is pressed against the dusted surface f more strongly than the support end 32r side. Each cleaning component 82A of the pair of rotating cleaning bodies 32A protrudes longer from the bottom surface 41b of the suction port body 41 at a position closer to the free end 32t than the support end 32r of the rotating cleaning body 32A.

[0157] The pair of rotating cleaning bodies 32A of the suction port body 18A, like the pair of rotating cleaning bodies 32 of the suction port body 18 of the first example, have a rotation center line Cr extending in a straight line in the left-right direction of the suction port body 41. That is, the support portion 52 of the suction port body 18A, like the support portion 52 of the suction port body 18 of the first example, supports the pair of rotating cleaning bodies 32A on the same rotation center line Cr.

[0158] The pair of rotary cleaning bodies 32A each have an inverted tapered shape with the outer diameter of the free end 32t side being larger than the outer diameter of the support end 32r side. The pair of rotary cleaning bodies 32A each have a truncated cone-shaped shaft core 81A and a cleaning member 82A provided on the outer periphery of the shaft core 81A.

[0159] The cleaning member 82A is preferably a bristle having uniform bristle length. That is, the shaft core 81A preferably has the same inverted taper as the rotary cleaning body 32A, and the taper angle and taper ratio of the shaft core 81A are preferably the same as those of the rotary cleaning body 32A.

[0160] The free end 32t side of the rotating cleaning body 32A is pressed against the dust surface f more strongly than the support end 32r side, and the force acting between the cleaning component 82A and the dust surface f increases as the support end 32r approaches the free end 32t. Therefore, the force acting on the thread-like dust wound on the rotating cleaning body 32A and sent to the free end 32t becomes greater as it approaches the free end 32t. Even if it is assumed that a part of the thread-like dust is wound around the rotating cleaning body 32A, the thread-like dust is guided to the free end 32t by a force greater than that of the suction port body 18 in the first example and is separated from the rotating cleaning body 32A.

[0161] Fig.19 It is a schematic diagram showing a third example of the suction port body according to the embodiment of the present invention.

[0162] like Fig.19 As shown, the suction port body 18B of the third example of the present embodiment includes a pair of rotating cleaning bodies 32B, and when the bottom surface 41b is directed toward the dusted surface f and the suction port body 41 is grounded, the free end 32t side of the pair of rotating cleaning bodies 32B is pressed against the dusted surface f more strongly than the support end 32r side. Each cleaning component 82B of the pair of rotating cleaning bodies 32B protrudes longer from the bottom surface 41b of the suction port body 41 at a position closer to the free end 32t than the support end 32r.

[0163] The pair of rotating cleaning bodies 32B of the suction port body 18B, like the pair of rotating cleaning bodies 32 of the suction port body 18 of the first example, have a rotation center line Cr extending in a straight line in the left-right direction of the suction port body 41. That is, the support portion 52 of the suction port body 18B, like the support portion 52 of the suction port body 18 of the first example, supports the pair of rotating cleaning bodies 32B on the same rotation center line Cr.

[0164] The pair of rotary cleaning bodies 32B each have an inverted tapered shape with the outer diameter of the free end 32t side being larger than the outer diameter of the support end 32r side. The pair of rotary cleaning bodies 32B each have a cylindrical shaft core 81B and a cleaning member 82B provided on the outer periphery of the shaft core 81B.

[0165] The shaft core 81B preferably has a cylindrical shape with a uniform outer diameter, similar to the shaft core 81 of the first example. That is, the cleaning member 82B has bristles with shorter hair length on the support end 32r side and bristles with longer hair length on the free end 32t side, depicting an inverted cone of the rotating cleaning body 32B. Therefore, the taper angle and taper ratio of the cleaning member 82B are the taper angle and taper ratio of the rotating cleaning body 32A. The taper of the cleaning member 82B can be adjusted by pre-implanting bristles with longer hair length in the shaft core 81B and cutting them off.

[0166] The rotating cleaning body 32B is pressed against the dust surface f more strongly on the free end 32t side than on the support end 32r side, and the force acting between the cleaning component 82B and the dust surface f increases as the support end 32r approaches the free end 32t. Therefore, the force acting on the thread-like dust wound on the rotating cleaning body 32B and sent to the free end 32t becomes greater as it approaches the free end 32t. Even if it is assumed that a part of the thread-like dust is wound around the rotating cleaning body 32B, the thread-like dust is guided to the free end 32t by a force greater than that of the suction port body 18 in the first example and is separated from the rotating cleaning body 32B.

[0167] Fig. 20 It is a schematic diagram showing a fourth example of the suction port body according to the embodiment of the present invention.

[0168] like Fig. 20 As shown, the suction port body 18C of the fourth example of the present embodiment includes a pair of rotating cleaning bodies 32. When the bottom surface 41b is directed toward the dusted surface f and the suction port body 41 is grounded, the free end 32t side of the pair of rotating cleaning bodies 32 is pressed against the dusted surface f more strongly than the support end 32r side. Each cleaning component 82 of the pair of rotating cleaning bodies 32 protrudes longer from the bottom surface 41b of the suction port body 41 at a position closer to the free end 32t than the support end 32r.

[0169] Unlike the support portion 52 of the suction port body 18 of the first example, the support portion 52C of the suction port body 18C obliquely supports the pair of rotary cleaning elements 32. The support portion 52C supports the pair of rotary cleaning elements 32 so that the free ends 32t of the pair of rotary cleaning elements 32 are closer to the dust collection surface f than the support ends 32r.

[0170] Therefore, unlike the pair of rotating cleaning bodies 32 of the suction port body 18 of the first example, the pair of rotating cleaning bodies 32A of the suction port body 18C have a pair of intersecting rotation center lines Cr. That is, unlike the support portion 52 of the suction port body 18 of the first example, the support portion 52C of the suction port body 18C supports the pair of rotating cleaning bodies 32 on the pair of intersecting rotation center lines Cr.

[0171] The support portion 52C includes a universal joint 121 that connects the pair of support shafts 93 so that the pair of support shafts 93 can rotate integrally even when they are tilted relative to each other. The support portion 52C may include a bellows or a coil spring that can follow the tilt of the pair of support shafts 93 instead of the universal joint 121.

[0172] Furthermore, the support portion 52C includes a pair of support shaft bases 92 provided on the pair of support shaft portions 93 , respectively, and a pair of bearings 91 that rotatably support the pair of support shaft bases 92 .

[0173] Since the suction port 18C includes a pair of rotating cleaning elements 32 arranged in an inverted V shape, it is preferable to include a cleaning element storage recess 61C defining an inverted V-shaped cleaning element chamber 63 similarly to the pair of rotating cleaning elements 32 .

[0174] The free end 32t side of the rotating cleaning body 32 is pressed against the dust surface f more strongly than the support end 32r side, and the force acting between the cleaning component 82 and the dust surface f increases as the support end 32r approaches the free end 32t. Therefore, the force acting on the thread-like dust wound on the rotating cleaning body 32 and sent to the free end 32t of the rotating cleaning body 32 becomes greater as it approaches the free end 32t. Even if it is assumed that a part of the thread-like dust is wound around the rotating cleaning body 32, the thread-like dust is guided to the free end 32t of the rotating cleaning body 32 by a force greater than that of the suction port body 18 in the first example and is separated from the rotating cleaning body 32.

[0175] As described above, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of the present embodiment are provided with a connection mechanism 89 having a concave portion 95 and a convex portion 96, any one of which is integrally provided in the support portion 52, 52C, and any other is provided in the hollow 32c of the shaft core portion 81, 81A, 81B, and is hooked to each other in a manner that can be unhooked, so as to prevent the rotary cleaning body 32, 32A, 32B from being separated from the support portion 52, 52C. That is, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 support the rotary cleaning body 32, 32A, 32B in the hollow 32c of the shaft core portion 81, 81A, 81B. By this supporting method, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can support the rotating cleaning body 32, 32A, 32B in a cantilever beam shape. By supporting the rotating cleaning body 32, 32A, 32B in a cantilever beam shape, the free end 32t of the rotating cleaning body 32, 32A, 32B can be exposed on the side of the suction port body 41, or close to the inner wall surface 83i of the suction port body 41 through the extremely thin side wall 83. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can scrape the dust on the suction surface f by the rotating cleaning body 32, 32A, 32B to at least one edge of the left and right sides of the suction port body 41.

[0176] In addition, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of the present embodiment are provided with a concave portion 95 or a convex portion 96, which is arranged in the hollow 32c of the shaft core portion 81, 81A, 81B from the support end 32r of the rotary cleaning body 32, and is integrally provided in the support portion 52, 52C. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can easily support the rotary cleaning body 32, 32A, 32B in a cantilever beam shape.

[0177] Furthermore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of the present embodiment are provided with a connection release body 101, which is arranged in the hollow 32c of the shaft core 81, 81A, 81B, and when pressed from the free end 32t of the rotating cleaning body 32, 32A, 32B toward the support end 32r, the hook between the concave portion 95 and the convex portion 96 is released. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can easily remove the rotating cleaning body 32, 32A, 32B supported in a cantilever beam shape for inspection, and easily install the inspected rotating cleaning body 32, 32A, 32B.

[0178] In addition, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of the present embodiment are provided with a holding force generating portion 102, which generates a force to move the connection release body 101 in the direction from the support end 32r toward the free end 32t to maintain the hooking of the concave portion 95 and the convex portion 96. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can prevent the connection release body 101 exposed from the free end 32t of the rotary cleaning body 32, 32A, 32B from simply falling off at the extent of slight contact with an obstacle.

[0179] Furthermore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of this embodiment are provided with a connection release body 101, which is arranged inside the cavity 32c and is located closer to the inside than the free end 32t. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can prevent the connection release body 101 from contacting obstacles such as walls and furniture, and avoid accidental separation of the rotating cleaning body 32, 32A, 32B.

[0180] In addition, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of the present embodiment are provided with a second recess 115 and a second protrusion 116, either of which is integrally provided in the support portion 52, 52C, and the other is provided in the hollow 32c, and is hooked to each other in a manner that can be released from the hook, so that the rotating cleaning body 32, 32A, 32B and the support portion 52, 52C are rotated and integrated. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can make the force that wants to separate the rotating cleaning body 32, 32A, 32B from the support portion 52, 52C and the torque transmitted from the support portion 52 to the rotating cleaning body 32 be shared by two different structures, and the connecting mechanism 89 can be accommodated in the hollow 32c of the rotating cleaning body 32.

[0181] Furthermore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of the present embodiment include a pair of rotating cleaning bodies 32, 32A, 32B arranged with the support portion 52 interposed therebetween. Therefore, the suction port body 18, 18A, 18B, 18C and the electric vacuum cleaner 1 can scrape the dust on the suction surface f by rotating the cleaning bodies 32, 32A, 32B over the left and right ends of the suction port body 41.

[0182] Therefore, according to the suction port bodies 18, 18A, 18B, 18C and the electric vacuum cleaner 1 of this embodiment, the dust on the suction surface can be scraped off by rotating the cleaning bodies 32, 32A, 32B to at least one of the left and right edges of the suction port bodies 18, 18A, 18B, 18C.

[0183] Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and purpose of the invention, and are included in the invention described in the scope of the patent claim and the scope equivalent thereto.

Claims

1. A suction mouthpiece, comprising: The rotating cleaning body can scrape the dust on the surface to be cleaned by rotating; A driving source outputting a driving force for rotating the rotary cleaning body; A support portion supports the rotary cleaning body so as to be rotatable and cantilevered; a power transmission mechanism for transmitting the driving force from the driving source to the supporting portion to rotate the rotary cleaning body; and A connecting mechanism connects the rotary cleaning body to the supporting portion in a detachable manner. The rotary cleaning body has a cylindrical shaft core, and the shaft core has a support end close to the support part, a free end away from the support part, and a cavity. The above-mentioned connecting mechanism has a recessed portion and a convex portion, either of which is integrally arranged in the above-mentioned supporting portion, and the other is arranged in the above-mentioned cavity of the above-mentioned axial core portion, and is hooked to each other in a releasable manner to prevent the above-mentioned rotating cleaning body from being separated from the above-mentioned supporting portion.

2. The suction nozzle according to claim 1, wherein: Either one of the concave portion and the convex portion integrally provided in the support portion is arranged in the cavity from the support end of the shaft core portion.

3. The suction nozzle according to claim 1 or 2, wherein: The connection mechanism includes a connection release body, which is disposed in the cavity and releases the hook between the recessed portion and the convex portion when the connection release body is pressed from the free end toward the support end.

4. The suction port according to claim 3, wherein: The coupling release body is disposed inside the cavity of the rotary cleaning body and further back than the free end.

5. The inhalation nozzle according to claim 1 or 2, wherein: The connection mechanism includes a holding force generating portion that generates a force for moving the connection release body in a direction from the support end toward the free end to maintain the hooking of the concave portion and the convex portion.

6. The inhalation nozzle according to claim 1 or 2, wherein: The above-mentioned connecting mechanism has a second recess and a second convex portion, either one of the above-mentioned second recess and the above-mentioned second convex portion is integrally arranged on the above-mentioned supporting portion, and the other one is arranged in the above-mentioned hole in the above-mentioned axial core portion, and is hooked to each other in a manner that can be unhooked, so that the above-mentioned rotating cleaning body and the above-mentioned supporting portion rotate in an integrated manner.

7. The inhalation nozzle according to claim 1 or 2, wherein: The suction port body includes a pair of the rotary cleaning bodies disposed across the support portion.

8. An electric vacuum cleaner comprising: Vacuum cleaner body; an electric blower housed in the vacuum cleaner body to generate negative pressure; and The suction port body according to any one of claims 1 to 7 is fluidically connected to the electric blower.

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