Suction inlet body and electric cleaner

Abstract

The present application provides a kind of suction inlet body and electric dust collector, can easily remove the dust winding in the wheel arranged in the bottom surface of shell, the dust entering the space that stores this wheel, i.e. so-called tire chamber, and have less wear and tear and firm wheel support structure.Suction inlet body (6) has: shell (34) with suction inlet (19);1st wheel (65) can be rotatably arranged in shell (34);Wheel holding body (69) has the surface side (69f) to the same direction as the bottom surface of shell (34), the inside (69b) facing the bottom surface of shell (34), and the wheel arrangement opening (68) through the inside, is installed in the bottom of shell (34);And 2nd wheel (66) is arranged in wheel arrangement opening (68) from the inside (69b) of wheel holding body (69) to the surface side (69f), and has the axle (76) held between shell (34) and wheel holding body (69).

Description

Technical Field

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

[0002] A known intake body comprises an intake body main body, a rotatable wheel rotatably mounted on the intake body main body, and rollers mounted on the bottom surface of the intake body main body. The rollers are positioned in a recessed portion that extends upwards from the bottom surface of the intake body and protrudes downwards from the bottom surface of the housing. The recessed portion corresponds to the tire cover (wheel cover) in a vehicle. The rollers are positioned forward of the rotatable wheel. This roller configuration ensures stable movement of the intake body main body.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2010-167313 Summary of the Invention

[0004] In the past, the recessed part of the suction inlet opened downwards from the bottom surface of the main body of the suction inlet. The front, back, left, right and top of the recessed part were closed.

[0005] Typically, the left and right walls of the recess have narrow openings, and the roller has a shaft that fits into the recess. By forcefully pressing the ends of the shafts into the narrow openings of the recesses, the roller is fixed to the suction body body.

[0006] However, sometimes wispy dust, such as thread or hair, gets tangled in the roller, or cotton-like dust gets caught in the roller and enters the inner part of the recess, near the top surface. In such cases, the user tries to use scissors or tools to pry open the roller to remove the wispy dust or the dust that has entered the inner part of the recess. Sometimes, the scissors or tools used to pry open the roller can cause the roller's support shaft to come loose from the narrow opening of the recess. If the shaft comes loose, the roller may detach from the suction body and be lost. Furthermore, if the shaft is repeatedly pulled out, the opening of the recess is shaved off and enlarged. If the opening of the recess is wide, the roller is more likely to detach from the suction body, greatly increasing the risk of loss.

[0007] Therefore, the present invention provides an inlet body and an electric vacuum cleaner that can easily remove dust wrapped around a wheel located on the bottom surface of the housing, dust entering the space where the wheel is housed, i.e., the so-called tire chamber, and has a wheel support structure with low wear and tear.

[0008] To solve the above-mentioned problems, the intake body of the present invention comprises: a housing having an intake; a first wheel rotatably disposed on the housing; a wheel holder having a surface side facing the same direction as the bottom surface of the housing, an inner side facing the bottom surface of the housing, and a wheel mounting opening penetrating the surface and the inner side, and mounted on the bottom of the housing; and a second wheel disposed in the wheel mounting opening from the inner side of the wheel holder toward the surface side, and having an axle held between the housing and the wheel holder.

[0009] Furthermore, the intake body according to an embodiment of the present invention comprises: a housing having an intake; a first wheel rotatably disposed on the housing; a wheel retainer having a surface side facing the same direction as the bottom surface of the housing, an inner side facing the bottom surface of the housing, and a wheel mounting opening penetrating the surface and the inner side, and mounted on the bottom of the housing; an intermediate member disposed between the housing and the wheel retainer; and a second wheel disposed from the inner side of the wheel retainer toward the surface side in the wheel mounting opening, and having an axle held between the intermediate member and the wheel retainer.

[0010] Furthermore, the electric vacuum cleaner according to embodiments of the present invention includes: a vacuum cleaner body; an electric blower housed in the vacuum cleaner body to generate negative pressure; and a suction inlet body to draw in air through the negative pressure generated by the electric blower.

[0011] Effects of the invention: According to the present invention, the suction inlet body and the electric vacuum cleaner can easily remove dust wrapped around the wheel provided on the bottom surface of the housing and dust entering the space where the wheel is housed, i.e., the so-called tire chamber, and have a wheel support structure with low wear and tear. Attached Figure Description

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

[0013] Figure 2 This is a perspective view of the bottom side of the inhalation port body according to an embodiment of the present invention.

[0014] Figure 3 This is a bottom view of the inhalation port body according to an embodiment of the present invention.

[0015] Figure 4 This is a cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0016] Figure 5 This is an exploded perspective view of the wheel retaining mechanism of the intake body according to an embodiment of the present invention.

[0017] Figure 6This is a first exploded perspective view of the inner side of the wheel retaining mechanism of the inlet body according to an embodiment of the present invention.

[0018] Figure 7 This is a second exploded perspective view of the inner side of the wheel retaining mechanism of the inlet body according to an embodiment of the present invention.

[0019] Figure 8 This is a partial cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0020] Figure 9 This is a partial perspective view of the inhalation port body according to an embodiment of the present invention.

[0021] Figure 10 This is a partial perspective view of the inhalation port body according to an embodiment of the present invention.

[0022] Figure 11 This is a partial cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0023] Figure 12 This is a bottom view of another example of the inhalation port body according to an embodiment of the present invention.

[0024] Figure 13 This is a perspective view of the rotating cleaning body according to an embodiment of the present invention.

[0025] Figure 14 This is a top view of the shaft end of the rotating cleaning body according to an embodiment of the present invention.

[0026] Figure 15 This is a side view of the rotating cleaning body according to an embodiment of the present invention.

[0027] Figure 16 This is a partial cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0028] Figure 17 This is a side view of another example of a rotating cleaning body according to an embodiment of the present invention.

[0029] Figure 18 This is an exploded perspective view of another example of the support structure of the second wheel of the intake body according to an embodiment of the present invention.

[0030] Figure 19 This is a perspective view of another example of the support structure of the second wheel of the intake body according to an embodiment of the present invention.

[0031] Figure 20 This is an enlarged bottom view of another example of the inhalation port body according to an embodiment of the present invention.

[0032] Explanation of symbols

[0033] 1: Electric vacuum cleaner; 2: Rechargeable battery; 3: Vacuum cleaner body; 5: Extension tube; 6, 6A; 6B: Suction inlet body; 11: Handle; 12: Main body shell; 12a: Front; 12b: Central; 12c: Rear; 13: Electric blower; 15: Suction pipe; 16: Dust collection unit; 17: Main control unit; 19: Suction inlet; 21: Control circuit board; 22: Input unit; 22a: Start switch; 22b: Stop switch; 25: Exhaust port; 31: Rotary cleaning body; 32: Motor; 33, 33B: Suction inlet body 33b: Bottom surface; 34, 34B: Housing; 35: Connecting pipe section; 36, 36B: Lower housing; 36b: Bottom surface; 36h: Concealed part; 36e: Exposed part; 37: Upper housing; 38: Upper cover; 39: Front cover; 41: Suction chamber; 41a: Lower half; 41b: Upper half; 42: Motor chamber; 43: Front suction inlet; 45: Fixed pipe; 46: Universal joint section; 51: Rotating shaft; 52: Cleaning body; 55: Power transmission mechanism; 56: Drive-side pulley; 57: Driven-side pulley; 58: Belt; 61: Hinge mechanism; 62 : Wheel; 63, 63A: Sealing part; 65: First wheel; 66, 66B: Second wheel; 68: Wheel mounting port; 69: Wheel retainer; 69f: Outer side; 69b: Inner side; 71, 71A: Right retainer; 72, 72A: Left retainer; 75, 75a, 75b: Axle end; 76: Axle; 77: Roller; 79: Axle detachment prevention part; 81: Recess; 83: Intermediate part; 85, 85A: Second retaining mechanism; 87: Sliding mechanism; 88, 88B: Recess; 91: Brush bristles; 92: Retaining frame; 93: Sealing configuration part; 95: Groove part; 95L: End part; 96: Claw part; 99, 99A, 99B: Retainer body; 99f: Surface side; 99b: Inner side; 101: Second sealing configuration part; 102: Second sealing part; 112: Cleaning body part; 113, 113A: Tube part; 115: Bearing retainer body; 116: Bearing; 117: Shaft part; 121: First flange part; 122: Second flange part; 123: Tube part; 125: Cut-out part; 126: Recess; 128: Second rib; 131: Third rib; 141: Screw; 142: Recess. Detailed Implementation

[0034] The following is for reference Figures 1 to 20 Embodiments of the suction inlet body and the electric vacuum cleaner of the present invention will be described. Furthermore, in several accompanying drawings, the same or equivalent components are labeled with the same reference numerals.

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

[0036] like Figure 1As shown, the electric vacuum cleaner 1 of this embodiment is, for example, a stick type that uses a secondary battery 2 as a power source, or it can be a handheld type. The electric vacuum cleaner 1 includes a vacuum cleaner body 3 that can be operated by hand, an extension tube 5 that can be attached to and detached from the vacuum cleaner body 3, and a suction port 6 that can be attached to and detached from the extension tube 5.

[0037] in addition, Figure 1 This is equivalent to a view of the electric vacuum cleaner 1 from the left-south-front of a user operating the handheld electric vacuum cleaner 1.

[0038] Furthermore, the electric vacuum cleaner 1 can be used as a handheld electric vacuum cleaner by removing the extension tube 5 and the suction inlet 6, leaving only the main body 3. That is, the main body 3 can also be used as a handheld electric vacuum cleaner on its own. In addition, the electric vacuum cleaner 1 can also be used with a nozzle that is much shorter than the extension tube 5, replacing the extension tube 5 and the suction inlet 6.

[0039] Furthermore, the electric vacuum cleaner 1 can also be a canister type or an upright type. The electric vacuum cleaner 1 can also replace the secondary battery 2 and use commercial AC power as its power source.

[0040] The vacuum cleaner body 3 includes: a main body shell 12 with a handle 11; an electric blower 13 housed in the main body shell 12, which generates suction negative pressure; a suction pipe 15 fluidly connected to the suction side of the electric blower 13; a dust collection unit 16 detachably mounted on the main body shell 12; a main body control unit 17, which mainly controls the electric blower 13; a secondary battery 2 detachably mounted on the main body shell 12; and a retaining mechanism that detachably retains the dust collection unit 16 on the main body shell 12.

[0041] The vacuum cleaner body 3 is powered by the electricity stored in the secondary battery 2 to drive the electric blower 13. The electric blower 13 generates negative pressure, which acts on the dust collection section 16. The negative pressure acting on the dust collection section 16 then acts sequentially on the suction pipe 15, the extension pipe 5, and the suction inlet body 6. The negative pressure reaching the suction inlet body 6 acts on the suction inlet 19. The negative pressure acting on the suction inlet 19 draws dust-laden air from the ground into the suction inlet 19. Hereinafter, the dust-laden air is referred to as "dust-laden air". The dust-laden air drawn into the suction inlet 19 flows into the dust collection section 16 through the suction inlet body 6, the extension pipe 5, and the suction pipe 15. The dust collection section 16 separates dust from the dust-laden air drawn in by the negative pressure, collects and accumulates the separated dust, and then delivers the separated air to the electric blower 13. The electric blower 13 discharges the air after the dust has been separated to the outside of the main body housing 12.

[0042] Furthermore, the electric vacuum cleaner 1 and the vacuum cleaner body 3 can be used by the user holding the vacuum cleaner body 3 in various postures. Therefore, in Figure 1 In the image, viewing from the direction of the solid arrow P is defined as a top-down view (view from above), and viewing from the direction opposite to the solid arrow P is defined as a bottom-up view. Figure 1 In the diagram, viewing from the direction of the solid arrow F is defined as front view (front observation), and viewing from the direction opposite to the solid arrow F is defined as back view. Figure 1 In the diagram, the view from the direction of the solid arrow L is defined as the left side view, and the view from the direction opposite to the solid arrow L is defined as the right side view. When the user holds the extension tube 5 horizontally in front of the user, the front-back, up-down, and left-right orientations of the electric vacuum cleaner 1 are consistent with the user's front-back, up-down, and left-right orientations.

[0043] The main housing 12 houses the electric blower 13 and the control circuit board 21 on which the main control unit 17 is installed.

[0044] The main body housing 12 includes: a columnar front portion 12a disposed on and extending along the extension line of the extension tube 5; a central portion 12b hanging down obliquely to the rear from the front portion 12a; a cylindrical rear portion 12c extending rearward from the lower half of the back surface of the central portion 12b; and a handle portion 11 extending rearward from the upper half of the back surface of the central portion 12b, bending into an arc shape and connected to the rear end of the upper surface of the rear portion 12c.

[0045] In addition, the main housing 12 has a charging socket that directs charging power to the secondary battery 2. The charging socket is connected to the secondary battery 2 via a charging circuit.

[0046] Furthermore, the main housing 12 has an input section 22, which is positioned within the range where a user holding the handle 11 can move their fingers to operate.

[0047] The front portion 12a and the central portion 12b cooperate to keep the dust collection unit 16 detachable. The dust collection unit 16 has a cylindrical appearance. The front portion 12a and the central portion 12b keep the dust collection unit 16 parallel to its centerline C, or in other words, the extension line of the centerline of the extension tube 5 along its long side. With the extension tube 5 and the dust collection unit 16 installed in the main body housing 12, the extension line of the centerline of the extension tube 5 and the centerline C of the dust collection unit 16 are arranged on a central longitudinal section that substantially divides the main body housing 12 left and right sides equally. The elongated front portion 12a and the cylindrical dust collection unit 16 are arranged side by side with their respective centerlines parallel.

[0048] The front part 12a of the main body housing 12 houses the suction pipe 15, which is arranged in the long side direction of the extension pipe 5, i.e. the extension direction, and extends in a tubular shape.

[0049] The rear portion 12c of the main housing 12 houses the electric blower 13 and the control circuit board 21. The rear portion 12c has an exhaust port 25 for discharging exhaust from the electric blower 13 from inside the main housing 12.

[0050] The central portion 12b of the main housing 12 is held in place by covering a portion of the rear end of the separation dust collection section 16, which is arranged side-by-side with the front portion 12a, and houses the air passage (not shown) connecting the separation dust collection section 16 to the electric blower 13. The central portion 12b connects to the rear end of the front portion 12a, which extends substantially in a straight line, and bulges downward and rearward toward the main housing 12. The central portion 12b has an appearance that slopes downward toward the rear of the main housing 12.

[0051] The suction pipe 15 is housed within the front portion 12a of the main housing 12 and supported by the main housing 12. With the separation and dust collection section 16 installed on the main housing 12, the suction pipe 15 is arranged parallel to the separation and dust collection section 16. The suction pipe 15 is a straight pipe that extends substantially without bending. The direction along the centerline of the suction pipe 15, the direction of extension of the suction pipe 15, and the direction of the long side of the suction pipe 15 are essentially the same, and are substantially consistent with the front-rear direction of the main housing 12.

[0052] The suction pipe 15 has a connector structure for attaching and detaching the extension pipe 5. This connector structure is located at the open end of the suction pipe 15. The suction pipe 15 is the fluid inlet of the vacuum cleaner body 3 and also the connector for fluidly connecting the extension pipe 5 to the dust collection unit 16. By removing the extension pipe 5 from the vacuum cleaner body 3, the suction pipe 15 functions as the suction port when the vacuum cleaner body 3 is used alone as a handheld electric vacuum cleaner. The nozzle of the suction pipe 15 opens towards the front of the vacuum cleaner body 3.

[0053] The rear end of the suction pipe 15 has a second opening that connects to the separation and dust collection section 16. The second opening opens radially outward from the suction pipe 15 and towards the separation and dust collection section 16. The second opening also opens downward towards the main body housing 12. The second opening is located on the bottom surface of the front portion 12a of the main body housing 12. With the separation and dust collection section 16 installed on the main body housing 12, the bottom surface of the front portion 12a approaches and mimics the separation and dust collection section 16. Therefore, the second opening is in fluid connection with the separation and dust collection section 16.

[0054] The dust collection unit 16 is disposed in the L-shaped storage space formed by the front part 12a and the central part 12b of the main body housing 12. The dust collection unit 16 separates, captures, and accumulates dust from the dust-laden air flowing into the vacuum cleaner body 3, and simultaneously delivers clean air, after dust removal, to the electric blower 13. The dust collection unit 16 uses a centrifugal separation method to separate dust from air by utilizing the difference in mass between the dust and air. Alternatively, a filter that filters dust from the dust-laden air can be installed downstream of the dust collection unit 16.

[0055] Furthermore, the dust collection section 16 extends in a cylindrical shape along the front-rear direction of the main body housing 12. In other words, the dust collection section 16 is a cylindrical container with a centerline C extending along the front-rear direction of the main body housing 12. The direction along the centerline C of the dust collection section 16, the extension direction of the dust collection section 16, and the direction of the long side of the dust collection section 16 are essentially the same, and are substantially consistent with the front-rear direction of the main body housing 12. Therefore, the centerline C of the dust collection section 16 is substantially parallel to the centerline of the suction pipe 15. In addition, the dust collection section 16 and the suction pipe 15 are arranged side by side. That is, the direction of the long side of the dust collection section 16 is consistent with the direction of the long side of the suction pipe 15. The diameter of the dust collection section 16 is larger than the diameter of the suction pipe 15, and the dust collection section 16 protrudes into the left-right direction (width direction) of the vacuum cleaner body 3 beyond the suction pipe 15 and the front part 12a of the main body housing 12. Furthermore, the left-right direction (width direction) of the vacuum cleaner body 3 corresponds to the normal direction of an imaginary plane that substantially includes the center line C of the cylindrical dust collection section 16 and the center line of the suction pipe 15, or the normal direction of an imaginary plane that substantially passes through the center line C of the cylindrical dust collection section 16 and the center line of the suction pipe 15. Moreover, this imaginary plane corresponds to the central longitudinal section of the vacuum cleaner body 3.

[0056] The retaining mechanism includes a first mechanism for detachably connecting one end of the separating dust collection section 16 to the main body housing 12, and a second mechanism for detachably connecting the other end of the separating dust collection section 16 to the main body housing 12.

[0057] The first mechanism is a locking mechanism that connects the dust separation and collection section 16 to the main body housing 12 by hooking a recess in the dust separation and collection section 16 with a protrusion in the main body housing 12. The recess and protrusion of the first mechanism hook or disengage depending on the change in the relative position of the dust separation and collection section 16 and the main body housing 12.

[0058] The protrusion of the first mechanism is provided at the front end of the bottom surface of the front portion 12a of the main body housing 12. The recess of the first mechanism is one end of the separation dust collection part 16 and is disposed in a position that matches the protrusion.

[0059] The second mechanism is a locking mechanism that connects the dust collection unit 16 and the main body housing 12 by hooking a protrusion on the dust collection unit 16 with a recess on the main body housing 12. Unlike the first mechanism, the second mechanism includes an operating piece that allows the protrusion to be removed from the recess while maintaining the relative position of the dust collection unit 16 and the main body housing 12. The operating piece is located on the dust collection unit 16, and the protrusion of the second mechanism is integrated with the operating piece.

[0060] The recess of the second mechanism is located at the bottom of the central portion 12b of the main housing 12, that is, at the location furthest away from the suction pipe 15 in the radial direction. The protrusion of the second mechanism is the other end of the separation and dust collection section 16, and is positioned to match the recess. Furthermore, both the recess of the first mechanism and the protrusion of the second mechanism are located in the separation and dust collection section 16, and are substantially symmetrically arranged with respect to the center of the long side and the center of the short side of the separation and dust collection section 16. Moreover, when viewed from the recess of the first mechanism, the protrusion of the second mechanism is located at the location furthest away within the separation and dust collection section 16.

[0061] The operating plate is capable of mechanical movement, including sliding and oscillation, and is part of various mechanisms that convert this movement into the action of removing a protrusion from a recess. For example, by sliding the operating plate, the user can remove the protrusion of the second mechanism from the recess. Furthermore, the operating plate can move the protrusion of the second mechanism toward a position where it is hooked into the recess even when not operated by the user. Preferably, the operating plate does not protrude from the bottom surface 33b of the suction port body 33.

[0062] With the dust collection unit 16 installed on the main housing 12, the first mechanism hooks the protrusion into the recess to connect the dust collection unit 16 to the main housing 12, and the second mechanism hooks the protrusion into the recess to connect the dust collection unit 16 to the main housing 12. Then, when the operating plate is operated and the protrusion of the second mechanism disengages from the recess of the second mechanism, the lock of the second mechanism is released. At this time, the protrusion of the first mechanism remains hooked to the recess. Therefore, with the lock of the second mechanism released, the user uses the first mechanism as a fulcrum to move the other end of the dust collection unit 16 away from the main housing 12. As a result, the dust collection unit 16 moves away from the main housing 12, and finally the protrusion of the first mechanism disengages from the recess, and the lock of the first mechanism is also released.

[0063] When the dust collection unit 16 detaches from the main housing 12, firstly, the protrusion of the first mechanism hooks onto the recess. With the first mechanism locked, the user uses the first mechanism as a fulcrum to bring the other end of the dust collection unit 16 close to the main housing 12. Thus, the dust collection unit 16 is installed on the main housing 12, and finally, the protrusion of the second mechanism hooks onto the recess, and the second mechanism is also locked.

[0064] Furthermore, in this embodiment, the dust collection unit 16 can be assembled and disassembled relative to the main body housing 12 while following an arcuate track, but it can also be assembled and disassembled while following a straight track radially toward the suction pipe 15. In this case, it is preferable that the first mechanism and the second mechanism are locked or unlocked substantially simultaneously. When assembling or disassembling the dust collection unit 16 relative to the main body housing 12, the direction of movement of the dust collection unit 16 is only required to be a direction intersecting the long side direction of the suction pipe 15. Therefore, when the dust collection unit 16 is installed on the main body housing 12, it only needs to move in the radial direction toward the suction pipe 15, and when the dust collection unit 16 is detached from the main body housing 12, it only needs to move in the radial direction away from the suction pipe 15.

[0065] The central portion 12b of the main housing 12 has a connection port that is fluidly connected to the exhaust side of the separation and dust collection section 16, and a downstream air duct of the separation section that fluidly connects the connection port to the electric blower 13. The central portion 12b includes a section sandwiched between the separation and dust collection section 16 and the rear portion 12c of the main housing 12. The connection port and the downstream air duct of the separation section are disposed in this section.

[0066] The connection port is located on the front side facing the central portion 12b. With the dust collection unit 16 installed in the main housing 12, the connection port faces the rear end face of the dust collection unit 16. Therefore, with the dust collection unit 16 installed in the main housing 12, the connection port is located on the extension line of the center line C of the dust collection unit 16.

[0067] The suction side of the electric blower 13 is connected to the separation and dust collection section 16 via a connection port and a downstream air duct of the separation section. The electric blower 13 draws in air from the separation and dust collection section 16 to generate a suction negative pressure. The electric blower 13 includes an impeller, an electric motor that generates the rotational driving force of the impeller, and a rotating shaft that transmits the rotational driving force from the electric motor to the impeller.

[0068] An impeller, such as a turbofan, has multiple blades. Each blade has a twisted shape that gradually rises radially from the center of a conical hub toward the outer edge of the hub. In other words, each blade is a so-called three-dimensional airfoil or wing section that changes from the leading edge to the trailing edge. The impeller is covered by a casing with an intake.

[0069] The electric blower 13 has a cylindrical or cylindrical shape centered on a rotating shaft. The electric blower 13 is housed within the main housing 12 with the center line of the rotating shaft along its front-rear direction and the suction inlet facing forward. Furthermore, the center line of the rotating shaft of the electric blower 13 is substantially arranged on the extension line of the dust collection section 16.

[0070] The control circuit board 21 of the main control unit 17 is housed in the rear part 12c of the main housing 12. The control circuit board 21 is located directly behind the electric blower 13.

[0071] The main control unit 17 includes a microprocessor and a storage device that stores various arithmetic programs and parameters executed by the microprocessor. The storage device stores various settings, i.e., independent variables, related to multiple preset operating modes. These multiple operating modes are associated with the output of the electric blower 13. In each operating mode, different input values ​​are set, i.e., the input values ​​of the electric blower 13, i.e., the target current value flowing through the electric blower 13. Each operating mode is associated with the operation input received by the input unit 22. The main control unit 17 selects any operating mode from the multiple preset operating modes that corresponds to the operation input sent to the input unit 22, reads the settings of the selected operating mode from the storage unit, and operates the electric blower 13 according to the read operating mode settings.

[0072] With the separation dust collection unit 16 installed on the main body housing 12, the rear part 12c of the main body housing 12 is positioned on the extension line of the center line C of the separation dust collection unit 16.

[0073] The secondary battery 2 is also called a storage battery, rechargeable battery, or chargeable battery. The secondary battery 2 stores the electricity consumed by the electric blower 13 and the main control unit 17. The secondary battery 2 is detachably installed at the bottom of the rear 12c of the main housing 12. The secondary battery 2 can also be fixed in place. By preparing multiple detachable secondary batteries 2, they can be appropriately replaced and utilized. When the charging rate of the secondary battery 2 installed in the electric vacuum cleaner 1 decreases, the electric vacuum cleaner 1 can continue to operate by replacing it with a fully charged secondary battery 2.

[0074] In addition, the electric vacuum cleaner 1 can replace the secondary battery 2 and use the primary battery as a power source, or it can use commercial AC power.

[0075] The handle 11 is integrally formed on the main body housing 12. The handle 11 is a part that the user holds by hand for vacuuming the floor with the electric vacuum cleaner 1. Therefore, the handle 11 preferably has a suitable shape that is easy for a person to hold with their fingers.

[0076] The handle 11 is positioned between the front portion 12a and the rear portion 12c of the main body housing 12. The handle 11 extends from the rear end of the front portion 12a towards the extension tube 5, and curves into an arc to connect with the rear end of the rear portion 12c. A continuous space extends through the main body housing 12 in the left-right direction (width direction) between the handle 11 and the back surface of the central portion 12b of the main body housing 12, and between the handle 11 and the top surface of the rear portion 12c of the main body housing 12. The user's fingers, primarily the index, middle, ring, and little fingers, are positioned within this space to grip the handle 11. This arrangement of the four fingers allows the user to easily operate the electric vacuum cleaner 1 and the vacuum cleaner body 3.

[0077] The input section 22 is provided on the top surface of the front end of the handle section 11 so that the user holding the handle section 11 can easily operate it with his thumb.

[0078] The input unit 22 includes an operation start switch 22a for receiving operation start operation of the electric blower 13 and an operation stop switch 22b for receiving operation stop operation of the electric blower 13. The operation start switch 22a and the operation stop switch 22b are electrically connected to the main control unit 17. The user of the electric vacuum cleaner 1 can operate the input unit 22 to select the operation mode of the electric blower 13. The operation start switch 22a also functions as an operation mode switch during the operation of the electric blower 13. In this case, the main control unit 17 switches the operation mode in the order of strong → medium → weak → strong → medium → weak → … whenever it receives an operation signal from the operation start switch 22a. Alternatively, the input unit 22 may replace the operation start switch 22a and separately include a strong operation switch (not shown), a medium operation switch (not shown), and a weak operation switch (not shown).

[0079] The suction inlet body 6 can move or glide freely on the surface to be vacuumed, such as wooden floors or carpets. In both moving and glide states, the bottom surface facing the surface to be vacuumed has a suction inlet 19. Furthermore, the suction inlet body 6 includes a freely rotating rotary cleaning body 31 disposed at the suction inlet 19, and an electric motor 32 that drives the rotary cleaning body 31. A connector structure that allows for easy attachment and detachment from the other end (here, the rear end) of the suction inlet body 6 relative to the other end (here, the front end) of the extension tube 5 is provided. The suction inlet body 6 is fluidly connected to the separation and dust collection unit 16 via the extension tube 5. That is, the suction inlet body 6, the extension tube 5, and the separation and dust collection unit 16 form a suction air path from the electric blower 13 to the suction inlet 19.

[0080] The electric vacuum cleaner 1 starts the electric blower 13 when the start switch 22a is operated. For example, when the electric vacuum cleaner 1 is in a stopped state and the start switch 22a is operated, the electric blower 13 first operates in a high-speed mode. When the start switch 22a is operated again, the electric blower 13 operates in a medium-speed mode. When the start switch 22a is operated a third time, the electric blower 13 operates in a low-speed mode, and so on. The high-speed, medium-speed, and low-speed modes are multiple preset operating modes. The input value to the electric blower 13 is the highest in the high-speed mode and the lowest in the low-speed mode.

[0081] Next, the inhalation port 6 will be described in detail.

[0082] Figure 2 This is a perspective view of the bottom side of the inhalation port body according to an embodiment of the present invention.

[0083] Figure 3 This is a bottom view of the inhalation port body according to an embodiment of the present invention.

[0084] Figure 4 yes Figure 3 A cross-sectional view of the inhalation body of an embodiment of the present invention with IV-IV lines.

[0085] like Figures 2 to 4 As shown, the inhalation body 6 of this embodiment has a flat inhalation body 33 that is shorter in the forward and backward direction and wider in the left and right direction, and a connecting pipe 35 provided at the rear of the central part of the inhalation body 33.

[0086] Here, the direction of forward movement of the suction inlet 6 ( Figures 2 to 4 The solid arrow Fo) is set to the front, and its opposite direction is set to the back.

[0087] The inlet body 33 has a housing 34, which has an inner surface that divides the inlet chamber 41 having an inlet 19 that opens into the bottom surface 33b of the inlet body 33. The housing 34 may also have a motor chamber 42 for housing the motor 32, and a control circuit board chamber for housing the motor control circuit board for controlling the drive of the motor 32. The inlet body 33 includes a lower housing 36 having the inlet 19, an upper housing 37 covering the rear half of the lower housing 36 from above, an upper cover 38 adjacent to the front of the upper housing 37, and a front cover 39 hanging down from the front edge of the upper cover 38.

[0088] In addition, the housing 34 has at least an intake port 19 with an opening on the bottom surface 33b, and includes a component for dividing the air passage connecting the intake port 19 to the extension pipe 5, regardless of the division portion of the constituent member or the number of divisions of the constituent member.

[0089] The lower housing 36 is divided into a lower half 41a of an intake chamber 41 with an intake port 19, a lower half of a motor chamber 42 adjacent to the intake chamber 41, and a lower half of a control circuit board chamber adjacent to the intake chamber 41.

[0090] The bottom and front of the intake chamber 41 are open. The open portion on the bottom side of the intake chamber 41 corresponds to the intake port 19. The open portion on the front side of the intake chamber 41 is referred to as the front intake port 43. The intake port 19 and the front intake port 43 are continuously connected. The upper part of the front intake port 43 is covered by the front cover 39.

[0091] Furthermore, the suction chamber 41 is disposed in the front half of the suction inlet body 33 and extends to the left and right. The suction chamber 41 is fluidly connected to the connecting pipe section 35. That is, the suction chamber 41 is fluidly connected to the vacuum cleaner body 3 through the connecting pipe section 35 and the extension pipe 5.

[0092] The rear half of the inlet body 33, which is adjacent to the rear of the inlet chamber 41 and the side of the connecting pipe 35, has a pair on the left and right sides of the inlet body 33. In this embodiment, one side is the left side, which is designated as the motor chamber 42, and the other side is the right side, which is designated as the control circuit board chamber.

[0093] The motor chamber 42 is located in the rear half of the inlet body 33, connected to the rear of the inlet chamber 41 and adjacent to one side of the connecting pipe section 35. The control circuit board chamber is located in the rear half of the inlet body 33, adjacent to the rear of the inlet chamber 41 and adjacent to the other side of the connecting pipe section 35.

[0094] The connecting tube 35 is a connector that can be easily attached to and detached from the extension tube 5 of the electric vacuum cleaner 1. The connecting tube 35 also functions as a universal joint that allows the suction inlet body 33 to be freely oscillated and rotated relative to the extension tube 5 in the vertical direction. During the movement of the suction inlet body 6 across the surface being vacuumed, the angle between the extension tube 5 and the surface changes constantly. The connecting tube 35 follows this angle, ensuring that the bottom surface 33b of the suction inlet body 33 smoothly faces the surface being vacuumed. The connecting tube 35 is sandwiched between the motor chamber 42 and the control circuit board in the left-right direction (width direction) of the suction inlet body 33. The connecting tube 35 applies negative pressure to the suction chamber 41. The connecting tube 35 includes a fixed tube 45 connected to the suction chamber 41 and a universal joint 46 that rotates and oscillates relative to the fixed tube 45.

[0095] A rotating cleaning body 31 is disposed in the suction chamber 41 and rotatably supported on the suction port body 33. A portion of the rotating cleaning body 31 protrudes outward from the suction port 19. The rotating cleaning body 31 has a rotating shaft 51 extending through the suction chamber 41, and a plurality of cleaning bodies 52 arranged around the rotating shaft 51 and extending in a spiral shape throughout the entire width of the suction chamber 41. The plurality of cleaning bodies 52 are formed by combining soft resin scrapers and strip-shaped bristles individually or alternately.

[0096] The electric motor 32 is housed in the motor chamber 42. The electric motor 32 generates a driving force that rotates the rotary cleaning body 31. The output shaft of the electric motor 32 faces the left-right direction (width direction) of the suction inlet body 33. The output shaft of the electric motor 32 protrudes towards the side wall of either the left or right side of the suction inlet body 33 closest to the electric motor 32. This side wall is the side wall of the motor chamber and is the side wall furthest from the connecting pipe section 35. The electric motor 32 and the rotary cleaning body 31 are connected via a power transmission mechanism 55. The power transmission mechanism 55 transmits the rotational driving force output by the electric motor 32 to the rotary cleaning body 31. The power transmission mechanism 55 includes a drive-side pulley 56 disposed on the output shaft of the electric motor 32, a driven-side pulley 57 connected to the shaft end of the rotary cleaning body 31, and a belt 58 wound between the drive-side pulley 56 and the driven-side pulley 57.

[0097] The upper housing 37 and the lower housing 36 are combined to divide the upper part of the motor compartment 42 and the upper part of the control circuit board compartment.

[0098] Furthermore, the upper housing 37 is mounted between the motor compartment 42 and the control circuit board compartment. The fixing pipe 45 of the connecting pipe section 35 is held between the mounting portion of the upper housing 37 and the lower housing 36.

[0099] The upper cover 38 and the lower shell 36 are integrally formed to seal the upper half 41b of the suction chamber 41.

[0100] The upper edge of the front cover 39 is adjacent to the front edge of the upper cover 38. The front cover 39 is supported on the upper cover 38 via a hinge mechanism 61. The hinge mechanism 61 supports the front cover 39 so that it can swing freely in the front-to-back direction of the front suction port 43. The hinge mechanism 61 includes a torsion spring. The torsion spring generates a spring force that pushes the front cover 39 towards the front end of its swing range. When the front of the suction port body 6 is pressed against the wall, the front cover 39 swings backward against the spring force of the torsion spring, that is, swings towards the direction of approaching the rotating cleaning body 31, thereby approaching the ground. This action of the front cover 39 reduces the opening area of ​​the front suction port 43, increases the airflow velocity, and thus more reliably sucks up dust from the wall into the suction chamber 41.

[0101] Furthermore, the suction inlet body 6 of this embodiment includes: a plurality of wheels 62 disposed on the bottom surface 33b of the suction inlet body 33, supporting the suction inlet body 33 on the surface to be suctioned; and sealing portions 63 and 64 extending along the edge of the suction inlet 19 and protruding from the bottom surface 33b of the suction inlet body 33.

[0102] The plurality of wheels 62 include a first wheel 65 disposed at the rear side of the intake body 33, and a plurality of second wheels 66 disposed at the middle in the front-rear direction of the intake body 33.

[0103] The first wheel 65 is rotatably supported on the intake body 33.

[0104] For example, there are two second wheels 66, which are arranged on the left and right sides of the intake body 33. The rotation axes of the two second wheels 66 are arranged on the same axis.

[0105] Preferably, a joint portion of the connecting pipe portion 35 is arranged between the rotation axis of the first wheel 65 and the rotation axis of the plurality of second wheels 66 in the front-rear direction of the suction inlet body 6. The arrangement of such a joint portion with the plurality of wheels 62 stabilizes the posture of the suction inlet body 33 in contact with the surface being vacuumed, and stabilizes the positional relationship between the bottom surface 33b of the suction inlet body 33 facing each other and the surface being vacuumed.

[0106] The sealing portion 63 extends along the rear edge of the suction inlet 19. The sealing portion 63 functions as an airflow resistance barrier, impeding the airflow between the bottom surface 33b of the suction inlet body 33 and the surface being cleaned, and behind the suction chamber 41, thereby increasing the static pressure of the suction chamber 41. Preferably, the sealing portion 63 and the rotation axes of the two second wheels 66 are arranged in a straight line when viewed from below the suction inlet body 33. This arrangement of the sealing portion 63 and the multiple second wheels 66 stabilizes the relative position of the sealing portion 63 to the surface being cleaned, i.e., the distance between them, thereby stabilizing the sealing function of the sealing portion 63.

[0107] Alternatively, a plurality of second wheels 66 may also include a second wheel 66 having a rotating shaft offset from the configuration of the extension line of the seal 63.

[0108] The second sealing part 64 extends along the left and right sides of the suction port 19 and the left and right edges of the bottom surface 33b of the suction port body 33. The second sealing part 64 functions as an airflow resistance that obstructs the airflow between the bottom surface 33b of the suction port body 33 and the surface being cleaned, as well as to the left and right sides of the suction chamber 41, thereby increasing the static pressure of the suction chamber 41.

[0109] Figure 5 This is an exploded perspective view of the wheel retaining mechanism of the intake body according to an embodiment of the present invention.

[0110] Figure 6 This is a first exploded perspective view of the inner side of the wheel retaining mechanism of the inlet body according to an embodiment of the present invention.

[0111] Figure 7 This is a second exploded perspective view of the inner side of the wheel retaining mechanism of the inlet body according to an embodiment of the present invention.

[0112] Figure 8 This is a partial cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0113] Figure 8 It is a cross-sectional view of a section passing through the rotation center line of the second wheel 66 and perpendicular to the bottom surface 33b of the intake body 33.

[0114] like Figures 5 to 8 As shown, the inlet body 6 of this embodiment has a plurality of wheel retainers 69. The plurality of wheel retainers 69 have an outer side 69f facing the same direction as the bottom surface of the housing 34, an inner side 69b facing the bottom surface of the housing 34, and a wheel mounting port 68 penetrating the outer and inner sides, and are installed at the bottom of the housing 34.

[0115] Each wheel retainer 69 covers a portion of the bottom surface 36b of the lower housing 36 and is mounted on the lower housing 36. The bottom surface 36b of the lower housing 36 includes a concealed portion 36h covered by the wheel retainer 69 and an exposed portion 36e not covered by the wheel retainer 69. The surface 69f of the wheel retainer 69 mounted on the housing 34 and the exposed portion 36e of the bottom surface 36b of the lower housing 36 correspond to the bottom surface 33b of the intake body 33.

[0116] The plurality of wheel retainers 69 includes a right retainer 71 disposed on the right side of the intake body 33 and a left retainer 72 disposed on the left side of the intake body 33. The right retainer 71 extends from the leading edge to the trailing edge of the right end of the intake body 33. The left retainer 72 is defined in the rear half of the left end of the intake body 33. The plurality of wheel retainers 69 are configured not to overlap with or obstruct the intake 19 and the front intake 43. A second sealing portion 64 on the left side is provided on the left retainer 72, and on the other hand, a second sealing portion 64 on the right side is provided on the lower housing 36.

[0117] When the right retainer 71 is removed from the suction inlet body 33, one shaft end 75 of the rotating cleaning body 31, specifically the right-side shaft end 75, is exposed. When the right-side shaft end 75 of the rotating cleaning body 31 is exposed, and the left-side shaft end of the rotating cleaning body 31 separates from the driven pulley 57 of the power transmission mechanism 55, the rotating cleaning body 31 separates from the suction inlet body 33. In other words, when the right retainer 71 is installed on the suction inlet body 33, the rotating cleaning body 31 is prevented from being removed from the suction inlet body 33; when the right retainer 71 is removed from the suction inlet body 33, the rotating cleaning body 31 can be removed from the suction inlet body 33.

[0118] like Figure 6 as well as Figure 7 As indicated by the double-dotted arrow, the second wheel 66 is positioned in the wheel mounting opening 68 from the inner side 69b towards the outer side 69f of each wheel retainer 69. Furthermore, the second wheel 66 has an axle 76 that is held between the housing 34 and each wheel retainer 69. The second wheel 66 is securely held to the intake body 33 by the axle 76, which is sandwiched between the wheel retainer 69 and the housing 34.

[0119] The second wheel 66 may have rollers 77 supported by the axle 76 for rotation, or it may have rollers 77 that rotate integrally with the axle 76, thus rotatably supporting the axle 76 to the wheel retainer 69. When the axle 76 is rotatably supported by the wheel retainer 69, it is preferable that the wheel retainer 69 has wear-resistant bearing portions on the axle 76. These bearing portions may be separate components from the wheel retainer 69, or the wheel retainer 69 itself may be made of a wear-resistant material. Compared to supporting the axle 76 with rollers 77, the method of supporting the axle 76 for rotation via the wheel retainer 69 makes it less likely for filamentous dust to become entangled in the second wheel 66.

[0120] Each wheel retainer 69 is equipped with an axle detachment prevention part 79, which prevents the axle 76 from detaching from the wheel retainer 69 and the second wheel 66 from detaching from the wheel retainer 69 when the wheel retainer 69 is removed from the intake body 33. The axle detachment prevention part 79 is, for example, a recess 81 that opens in a direction away from the inner side 69b of the wheel retainer 69. The opening of the recess 81 is narrower than the bottom of the recess 81, which keeps the axle 76 from easily detaching from the recess 81. The retaining force of the recess 81 on the axle 76 is only required to prevent the axle 76 from detaching from the recess 81 due to the weight of the second wheel 66, for example, from tens of kilograms to hundreds of kilograms. It can also be sufficient to prevent the axle 76 from easily detaching from the recess 81 when subjected to the finger force of an adult woman, for example, a force in kilograms. The axle detachment prevention unit 79 is intended to prevent the loss of the second wheel 66 when the wheel retainer 69 is removed from the intake body 33, and may not have the function of firmly holding the second wheel 66 to the wheel retainer 69.

[0121] Alternatively, the intake body 6 may also include an intermediate component 83 disposed between the housing 34 and the wheel retainer 69. In this case, the second wheel 66 preferably has an axle 76 held between the intermediate component 83 and the wheel retainer 69. Preferably, the wheel retainer 69 has a detachment prevention portion that prevents the intermediate component 83 from detaching from the wheel retainer 69 when the wheel retainer 69 is removed from the housing 34. The detachment prevention portion is, for example, a fitting structure having a protrusion provided on either the wheel retainer 69 or the intermediate component 83, and a recess provided on the other wheel retainer 69 and embedded in the protrusion. The retaining force of the fitting structure is sufficient to prevent the intermediate component 83 from detaching from the wheel retainer 69 due to its own weight, for example, from tens of grams to hundreds of grams, or to allow the intermediate component 83 to easily separate from the wheel retainer 69 under the force of an adult female's finger, for example, in kilograms. The detachment prevention unit is intended to prevent the loss of the intermediate component 83 when the wheel retainer 69 is removed from the housing 34, and may not have the function of firmly holding the intermediate component 83 to the wheel retainer 69.

[0122] The intake body 33 has a second retaining mechanism 85 that detachably holds the wheel retainer 69 to the lower housing 36. The second retaining mechanism 85 is provided on each wheel retainer 69. That is, the right retainer 71 and the left retainer 72 each have the second retaining mechanism 85.

[0123] The second retaining mechanism 85 includes: a first recess disposed on either the wheel retainer 69 or the lower housing 36; a fixed protrusion disposed on the other of the wheel retainer 69 and the lower housing 36 and hooked onto the first recess; a second recess disposed on either the wheel retainer 69 or the lower housing 36; and a movable protrusion disposed on the other of the wheel retainer 69 and the lower housing 36 and hooked onto the second recess. The movable protrusion can be moved relative to the second recess, for example, by means of a sliding mechanism 87 disposed on the wheel retainer 69. The second retaining mechanism 85 connects the wheel retainer 69 and the lower housing 36 by means of the fixed protrusion hooked onto the first recess and the movable protrusion hooked onto the second recess. Furthermore, by operating the sliding mechanism 87, the movable protrusion can be disengaged from the second recess, and the fixed protrusion can be disengaged from the first recess, thereby separating the wheel retainer 69 from the lower housing 36. The sliding mechanism 87 preferably slides along the left-right direction of the intake body 6. The intake body 6 mainly travels along the front-back direction. Therefore, the sliding mechanism that slides along the front-back direction may accidentally get caught on an obstacle during the travel of the intake body 6, thus releasing the second retaining mechanism 85. The sliding mechanism 87 that slides along the left-right direction is less likely to get caught on an obstacle during the travel of the intake body 6, thus reducing the likelihood of the second retaining mechanism 85 being released.

[0124] Furthermore, the intake body 33 has a recess 88, which cooperates with the wheel mounting opening 68 of the wheel retainer 69 to receive a portion of the second wheel 66. When the wheel retainer 69 is connected to the housing 34, the wheel mounting opening 68 of the wheel retainer 69 and the recess 88 of the housing 34 define a space for receiving a portion of the second wheel 66, namely the so-called tire chamber.

[0125] However, sometimes filamentous dust, such as thread ends or hair, gets tangled around the second wheel 66, or cotton-like dust gets caught in the second wheel 66 and enters the inside of the recess 88, that is, the inside of the tire chamber of the second wheel 66.

[0126] In this case, in the intake body 6 of this embodiment, by releasing the second retaining mechanism 85 and removing the wheel retainer 69 from the housing 34, the recess 88 of the housing 34 can be easily opened. When the second wheel 66 separates from the housing 34 together with the wheel retainer 69, the dust that has entered the inside of the recess 88 will not be hidden by the second wheel 66 but will be exposed to the concealed portion 36h on the bottom surface 36b of the lower housing 36, thus making it easy to remove, or it can be easily removed from the recess 88 while attached to the second wheel 66.

[0127] Furthermore, with the wheel retainer 69 removed from the housing 34, the user can perform maintenance on the second wheel 66 from both the inner side 69b and the outer side 69f of the wheel retainer 69. Therefore, the user can easily remove dust adhering to the second wheel 66, and can easily remove dust wrapped around the axle 76 and rollers 77 of the second wheel 66 by pulling on the exposed ends of the inner side 69b or the outer side 69f. If linear dust is wrapped around the second wheel 66, the user can cut off the exposed portion of the inner side 69b or the outer side 69f of the wheel retainer 69 using a tool such as scissors, or temporarily remove the second wheel 66 from the wheel retainer 69 to untangle the dust and remove it.

[0128] Figure 9 This is a partial perspective view of the intake body of an embodiment of the present invention after the wheel retainer has been removed.

[0129] Figure 10 This is a partial perspective view of the intake body of an embodiment of the present invention, which is equipped with a wheel retainer.

[0130] Figure 11 This is a partial cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0131] like Figures 9 to 11 As shown, the intake body 6 of this embodiment has a linear sealing portion 63, which is provided when the wheel retainer 69 is installed on the intake body 33. Figure 2 , Figure 10 ) is fixed to the intake body 33, when the wheel retainer 69 is removed from the intake body 33 ( Figure 9 It can be separated from the main body 33 of the inlet.

[0132] The sealing part 63 includes bristles 91 extending linearly along the left-right direction of the inlet body 33, and a retaining frame 92 in the shape of a C-channel that holds the base of the bristles 91. The base of the bristles 91 is a flat piece of fabric with a narrow width in the front-back direction of the inlet body 33, and the bristles 91 are a collection of a large number of hairs extending along the normal direction of the base. The retaining frame 92 firmly holds the base of the bristles 91, allowing the large number of hairs, i.e., the bristles 91, to protrude from the open portion of the C-channel shape.

[0133] The inlet body 33 has a sealing configuration part 93 that extends along the edge of the inlet 19 and is slidably configured to allow the sealing part 63 to slide.

[0134] The sealing configuration 93 includes a groove 95 open on the bottom surface 33b of the inlet body 33, and a plurality of claws 96 provided on the opening edge of the groove 95 and hooked onto the sealing part 63. The end of either side of the groove 95, in this embodiment the left end 95L, is open in the concealed portion 36h on the bottom surface 36b of the lower housing 36. That is, the left end 95L of the groove 95 is blocked by the left retainer 72 when the left retainer 72 is installed on the inlet body 33. The plurality of claws 96 includes multiple pairs facing each other on the opening edge of the groove 95. The pairs of claws 96 are spaced apart in the extending direction of the groove 95. In this embodiment, there are four pairs of claws 96, arranged at equal intervals in the extending direction of the groove 95.

[0135] The sealing configuration part 93 presses the retaining frame 92 of the sealing part 63 disposed in the groove part 95 with the claw part 96, thereby preventing the sealing part 63 from falling off from the groove part 95 toward the bottom surface 33b of the suction port body 33.

[0136] Furthermore, the wheel retainer 69 prevents the sealing portion 63 housed in the sealing configuration portion 93 from sliding, thereby fixing the sealing portion 63 to the intake body 33. That is, the left retainer 72 blocks the opening of the end 95L of the groove portion 95, thereby preventing the sealing portion 63 from coming out from the long side of the groove portion 95.

[0137] That is, in this embodiment, when the left retainer 72 is removed from the inlet body 33, the sealing part 63 can be pulled out from the left end 95L of the groove 95 exposed on the bottom surface 33b of the inlet body 33. Since the inlet body 6 houses the motor 32 and the motor control circuit board, it is difficult to wash the sealing part 63 while it is installed on the inlet body 33. Therefore, the inlet body 6 of this embodiment has a sealing part 63 that can be easily removed from the sealing configuration part 93 and can be easily washed separately. After cleaning, the sealing part 63 is inserted into the groove 95 through the opening at the end 95L of the groove 95, thereby easily returning it to the sealing configuration part 93.

[0138] In addition, the wheel retainer 69 only needs to have the anti-detachment function of the sealing part 63. Figures 9 to 11 ) and the retaining function of the second wheel 66 Figures 5 to 7 Either one of them is acceptable. In other words, it can also be a retainer 99 that has the anti-detachment function of the sealing part 63 but does not have the retaining function of the second wheel 66, and serves the anti-detachment function of the sealing part 63.

[0139] Figure 12 This is a bottom view of another example of the inhalation port body according to an embodiment of the present invention.

[0140] like Figure 12As shown, the inlet body 6A of this embodiment may also have a sealing portion 63A that extends to the left and right in a greater extent than the inlet 19.

[0141] In other words, the sealing portion 63A has a first portion held in the sealing configuration portion 93 of the inlet body 33 and a second portion held in the second sealing configuration portion 101 of the retainer 99A. The first portion of the sealing portion 63A runs along the edge of the inlet 19, and the second portion of the sealing portion 63A also extends from the first portion and protrudes from the surface 99f of the retainer 99A. When viewed from below the inlet body 6A, the sealing portion 63A extends from the exposed portion 36e of the bottom surface of the housing 34 to the surface 99f of the retainer 99A.

[0142] The retainer 99A retains at least one end of the sealing portion 63A, while the intake body 33 retains the remaining portion of the sealing portion 63A. The right retainer 71A retains the right end of the sealing portion 63A, and the left retainer 72A retains the left end of the sealing portion 63A. The retainer 99A includes a second sealing configuration portion 101 having the same structure as the sealing configuration portion 93 of the intake body 33. That is, the retainer 99A includes a second sealing configuration portion 101 that allows the second portion to be slidably configured.

[0143] Alternatively, the sealing portion 63A may extend only to either side of the right retainer 71A or the left retainer 72A.

[0144] Furthermore, the sealing portion 63A can be separated into a first portion and a second portion. In other words, the sealing portion 63A can also include a sealing portion 63 held in the sealing configuration portion 93 of the inlet body 33, and a second sealing portion 102 arranged in the extending direction of the sealing portion 63 and protruding from the surface 99f of the retainer 99A. In this case, the second sealing configuration portion 101 of the retainer 99A can independently retain the second sealing portion 102, and when the retainer 99A is installed in the housing 34, the sealing portion 63A and the second sealing portion 102 press against each other at their end faces to prevent them from falling off.

[0145] like Figure 12 As shown by the double-dotted line, the second wheel 66 can be positioned in front of the second part of the sealing portion 63A, or it can be positioned behind the second part of the sealing portion 63A. Furthermore, the second wheel 66 can be... Figure 3Similarly, the second wheel 66 is arranged in a straight line along the extension line of the sealing portion 63A. When the second wheel 66 is arranged in front of or behind the second part of the sealing portion 63A, it is easier to reduce the width dimension of the suction inlet body 33 compared to arranging the second wheel 66 along the extension line of the sealing portion 63A. Furthermore, when the second wheel 66 is arranged in front of the second part of the sealing portion 63A, compared to arranging the second wheel 66 in other parts, the distance between the rotation axis center of the first wheel 65 and the rotation axis center of the second wheel 66 is increased, the posture of the suction inlet body 33 in contact with the dust-collecting surface is stabilized, and the arrangement margin of the joint portion of the connecting pipe portion 35 is increased.

[0146] Figure 13 This is a perspective view of the rotating cleaning body according to an embodiment of the present invention.

[0147] Figure 14 This is a top view of the shaft end of the rotating cleaning body according to an embodiment of the present invention.

[0148] Figure 15 This is a side view of the rotating cleaning body according to an embodiment of the present invention.

[0149] Figure 16 This is a partial cross-sectional view of the inhalation port body according to an embodiment of the present invention.

[0150] Figure 15 This is equivalent to a diagram of the rotating cleaning body 31 viewed from the axial direction. Figure 16 By rotating the center line of the cleaning body 31.

[0151] like Figures 13 to 16 As shown, the rotating cleaning body 31 of this embodiment includes: a pair of shaft ends 75; a long cleaning body portion 112 supported by the pair of shaft ends 75 so as to be rotatable; and a tube portion 113 disposed at at least one end of the cleaning body portion 112 and integrally rotatably fixed to the cleaning body portion 112.

[0152] One shaft end 75a is adjacent to the tube portion 113 of the cleaning body portion 112, and the other shaft end 75b supports the driven pulley 57 of the power transmission mechanism 55 so that it can rotate. The driven pulley 57 is detachably and integrally rotatably connected to the cleaning body portion 112. That is, the other shaft end 75b is fixed to the suction port body 33 and supports the driven pulley 57 so that it can rotate.

[0153] Each shaft end 75 has a bearing retainer 115 fixed to the suction inlet body 33 and a bearing 116 held in the bearing retainer 115. The bearing retainer 115 has a shape whose radial dimension varies with respect to the rotation center of the rotating cleaning body 31, for example, it has a quadrilateral shape when viewed from the direction along the rotation center line of the rotating cleaning body 31. The bearing retainer 115 with such a shape can be easily held in the suction inlet body 33 without rotation. The bearing 116 is supported by a shaft portion 117 protruding from the tube portion 113 that rotates integrally with the cleaning body portion 112, or a shaft portion 117 protruding from the driven side pulley 57 that rotates integrally with the cleaning body portion 112, so that it can rotate. In addition, each shaft end 7 has a suitable anti-detachment mechanism to prevent the shaft portion 117 from detaching from the bearing 116.

[0154] The cleaning body portion 112 has: a rotating shaft 51 extending transversely through the suction chamber 41; and a plurality of cleaning bodies 52 disposed around the rotating shaft 51, extending spirally across the entire width of the suction chamber 41. The rotating shaft 51 is preferably a hollow shaft. One end of the cleaning body portion 112 is fixed to the tube portion 113, and the other end of the cleaning body portion 112 is connected to the driven pulley 57 in a fitting structure. This fitting structure is, for example, a coupling. The fitting structure has: a plurality of recesses arranged radially in the cleaning body portion 112, disposed on either the cleaning body portion 112 or the driven pulley 57; and a plurality of protrusions disposed on either the cleaning body portion 112 or the driven pulley 57, and capable of fitting into the plurality of recesses. The rotating cleaning body 31 removes the wheel retainer 69 (left retainer 72, 72A) from the suction port body 33, exposing one of the shaft ends 75a. Removing one of the shaft ends 75a from the suction port body 33 releases the engagement of the fitting structure, thereby making it easy to remove from the suction port body 33.

[0155] Alternatively, the rotating sweeper 31 may not have a fitting structure, and the driven pulley 57 and the sweeper part 112 may be integrally and rotatably fixed. In this case, the rotating sweeper 31 removes the other shaft end 75b from the suction port body 33 and removes the belt 58 from the driven pulley 57, thereby making it easy to remove from the suction port body 33.

[0156] The tube portion 113 includes a first flange portion 121, a second flange portion 122 that is closer to the cleaning body portion 112 than the first flange portion 121, and a tube portion 123 disposed between the first flange portion 121 and the second flange portion 122.

[0157] The first flange 121, the second flange 122, and the cylindrical portion 123 are preferably circular or polygonal when viewed from the direction of the rotation center line of the rotating cleaning body 31. Preferably, the maximum outer diameter of the cylindrical portion 123 is smaller than the maximum outer diameters of the first flange 121 and the second flange 122, and the maximum outer diameter of the first flange 121 is larger than the maximum outer diameter of the second flange 122. Based on this dimensional relationship, the cylindrical portion 113 can easily capture filamentous dust that is to be wound around the axial end of the cleaning body portion 112.

[0158] The first flange portion 121 is closer to one of the shaft end portions 75a than the second flange portion 122. Furthermore, the first flange portion 121 has a cutout portion 125 that is connected to the outer peripheral surface of the cylindrical portion 123.

[0159] Furthermore, the tube portion 113 has a recess 126 that is continuous with the cut portion 125, such that a portion of the tube portion 123 is recessed toward the rotation center line of the cleaning body portion 112. The recess 126 is open toward the axial end 75 of the tube portion 113 and is visible thereto.

[0160] The width of the cut portion 125 and the width of the recess 126 in the circumferential direction of the cleaning body 112 have a predetermined width dimension that is larger than the plate thickness of the first flange portion 121. The width dimensions of the cut portion 125 and the recess 126 are, for example, 3 mm to 6 mm, and are set to allow commercially available scissors to be easily inserted into the cut portion 125 and the recess 126 when they move axially toward the rotating cleaning body 31.

[0161] In this rotary cleaning body 31, the user can easily insert commercially available scissors or knives into the cutting portion 125 and recess 126 by moving them axially towards the rotary cleaning body 31, thus cutting away dust entangled in the tube portion 113. In conventional rotary cleaning bodies, scissors or knives are inserted from the radially outer side of the rotary cleaning body 31 toward its centerline. Therefore, there is little space available for using scissors or knives, making it difficult to handle them. In the rotary cleaning body 31 of this embodiment, the user can operate the scissors or knives inserted into the cutting portion 125 and recess 126 in a direction away from the radially outer side of the centerline of the rotary cleaning body 31. The radially outer side of the cutting portion 125 and recess 126, i.e., the radially outer side of the tube portion 113, is an open space without any obstructions. Therefore, the user can operate the scissors or knives inserted into the cutting portion 125 and recess 126 with great ease and according to their intention. Furthermore, the axial length of the tube section 113 is not affected by the ease of operation of the scissors or knives inserted into the cut section 125 and the recess 126; it only needs to be the necessary and sufficient length to wrap the filamentous dust. That is, the overall length of the rotating cleaning body 31 is not affected by the ease of operation of the scissors or knives inserted into the cut section 125 and the recess 126, and can be shortened.

[0162] In addition, the tube portion 113 may have at least one of the cut-out portion 125 and the recess 126. Furthermore, the tube portion 113 may be provided at the end of the cleaning body portion 112 with the fitting structure, that is, at the end of the cleaning body portion 112 adjacent to the driven side pulley 57, or it may be provided at both ends of the cleaning body portion 112.

[0163] The suction inlet body 33 has a second rib 128 sandwiched between the first flange 121 and the second flange 122 of the tube portion 113. The second rib 128 is also provided in the wheel retainer 69 (left retainer 72, 72A). The second rib 128 preferably approaches the tube portion 123 of the tube portion 113 within a range that does not impede the rotation of the rotating cleaning body 31. The protruding end of the second rib 128 preferably mimics the shape of the tube portion 123 of the tube portion 113. The second rib 128 easily prevents filamentous dust wrapped around the cleaning body portion 112 and the tube portion 113 from entering the boundary between the rotating part and the stationary part of the rotating cleaning body 31.

[0164] Figure 17 This is a side view of another example of a rotating cleaning body according to an embodiment of the present invention.

[0165] like Figure 17 As shown, the tube portion 113A of this embodiment may also have a third rib 131 provided between the first flange portion 121 and the second flange portion 122.

[0166] Viewed from the direction of the rotation center line of the rotating cleaning body 31, the third rib 131 is preferably configured such that either the shorter of the imaginary straight line L drawn between the protruding ends of the adjacent third ribs 131 and the tangent T drawn imaginary from the protruding end of the third rib 131 to the outer peripheral surface of the cylinder 123 crosses the cut-out portion 125.

[0167] The third rib 131 enlarges the gap between the outer peripheral surface of the cylindrical portion 123 of the cylindrical portion 113A and the filamentous dust wrapped around the cylindrical portion 113A, thereby improving the ease of cutting the filamentous dust.

[0168] Figure 18 This is an exploded perspective view of another example of the support structure of the second wheel of the intake body according to an embodiment of the present invention.

[0169] Figure 19 This is a perspective view of another example of the support structure of the second wheel of the intake body according to an embodiment of the present invention.

[0170] like Figures 5 to 7 As shown, the intake body 6 includes a second wheel 66, which has an axle 76 mounted in a direction that moves from the inside of the bottom surface 33b of the intake body 33 towards the surface of the bottom surface 33b of the intake body 33. Here, "the inside of the bottom surface 33b of the intake body 33" corresponds to the inside 69b of the wheel retainer 69, and "the surface of the bottom surface 33b of the intake body 33" corresponds to the surface 69f of the wheel retainer 69.

[0171] In contrast, such as Figure 18 as well as Figure 19 As shown, the intake body 6B of this embodiment includes a second wheel 66B, which has an axle 76 mounted in a direction parallel to the bottom surface 33b of the intake body 33B.

[0172] The housing 34B of the intake body 33B has a recess 88B that cooperates with the wheel mounting port 68 of the retainer 99B to receive a portion of the second wheel 66B. When the housing 34B is connected to the retainer 99B, the wheel mounting port 68 of the retainer 99B and the recess 88B of the intake body 33B define a space for receiving a portion of the second wheel 66B, namely the tire chamber.

[0173] Recess 88B and Figures 5 to 7 The recess 88 of the housing 34 shown is different from the axle 76 that supports the second wheel 66B.

[0174] The second wheel 66B has a rotatable roller 77 supported by an axle 76. For example... Figure 18As indicated by the double-dotted arrow, the roller 77 of the second wheel 66B is positioned in the recess 88B, approaching the concealed portion 36h from the bottom surface of the housing 34B. The axle 76 of the second wheel 66B is positioned in the recess 88B in a direction parallel to the bottom surface 33b of the intake body 33B. That is, either the left or right wall of the recess 88B has a through hole supporting the axle 76, and either the left or right wall of the recess 88B has a non-through stop hole. In this embodiment, the wall of the recess 88B closest to the outer edge of the intake body 6 is the right wall, which has a through hole, while the wall furthest from the outer edge of the intake body 6, which in this embodiment is the left wall, has a stop hole.

[0175] The retaining hole is preferably a tapered hole whose diameter decreases towards the bottom. This retaining hole functions as an axle detachment prevention device to prevent the axle 76 from detaching from the housing 34B and the second wheel 66B from detaching from the housing 34B. The retaining force of the retaining hole on the axle 76 is sufficient to prevent the axle 76 from detaching from the retaining hole due to its own weight, for example, to the extent that it is between tens of grams and hundreds of grams. It can also be sufficient to prevent the axle 76 from easily detaching from the retaining hole under the force of an adult woman's finger, for example, a force measured in kilograms.

[0176] Axle detachment prevention feature can also be provided at the open end of the through hole. Such axle detachment prevention feature can be a protrusion that partially reduces the diameter of the through hole to prevent the axle 76 from detaching from the through hole. The retaining force of the protrusion on the axle 76 is only required to prevent the axle 76 from detaching from the through hole due to its own weight, for example, to the extent that the axle 76 will not detach from the through hole due to the force of an adult female's finger, for example, a force in the kilogram.

[0177] Both the axle detachment prevention part provided in the stop hole and the axle detachment prevention part provided in the through hole are intended to prevent the loss of the second wheel 66B when the retainer 99B is removed from the housing 34B, but may not have the function of firmly holding the second wheel 66B in the recess 88B.

[0178] The retainer 99B has an outer side 99f facing the same direction as the bottom surface of the housing 34B, an inner side 99b facing the bottom surface of the housing 34B, and a wheel mounting port 68 that passes through the inner and outer sides, and is installed at the bottom of the housing 34B.

[0179] The retainer 99B covers a portion of the bottom surface 36b of the lower housing 36B and is mounted to the lower housing 36B. That is, the bottom surface 36b of the lower housing 36B includes a concealed portion 36h covered by the retainer 99B and an exposed portion 36e that is not covered by the wheel retainer 69. The surface 69f of the retainer 99B mounted to the housing 34B and the exposed portion 36e of the bottom surface 36b of the lower housing 36B correspond to the bottom surface 33b of the intake body 33B.

[0180] In addition, inhalation mouthpieces 6, 6A, and 6B are not limited to Figures 5 to 7 The axle 76 of the second wheel 66B shown is positioned in the wheel retainer 69 in a radial direction from the inner side 69b to the outer side 69f. Figure 18 The axle 76 of the second wheel 66B shown is positioned in the recess 88B in a direction that moves axially from the axle 76 and parallel to the bottom surface 33b of the intake body 33B. The intake bodies 6 and 6A are as follows... Figure 18 As shown, the axle 76 of the second wheel 66 is positioned in the wheel mounting port 68 in a direction that moves axially along the axle 76 and parallel to the bottom surface of the wheel retainer 69. Furthermore, the intake port 6B is as follows... Figures 5 to 7 As shown, the axle 76 of the second wheel 66B is positioned in the recess 88B in a radial direction from the axle 76 and moving downward from above the intake body 33B. Specifically, the axle 76 of the second wheel 66B is positioned in the recess 88B in a radial direction from the axle 76, facing the bottom surface 33b of the intake body 33B, and moving downward from the front upper direction to the rear lower direction from the intake body 33B.

[0181] That is, such as Figure 18 As shown, when the axle 76 is first installed on the intake body 33, 33B, the wheel retainer 69 (or retainers 99, 99A, 99B) functions as a blocking part that obstructs the movement of the axle 76 when it is installed on the intake body 33, 33B, thus hindering the movement of the axle 76. Furthermore, as... Figures 5 to 7 As shown, when the axle 76 is first installed on the wheel retainer 69 (or retainer 99, 99A, 99B), the intake body 33, 33B functions as a blocking part that blocks the path of movement of the axle 76 when the axle 76 is installed on the wheel retainer 69 (or retainer 99, 99A, 99B) and thus hinders the movement of the axle 76.

[0182] Alternatively, the intake body 6B may also include an intermediate component disposed between the housing 34B and the retainer 99B. In this case, the intermediate component functions as a blocking part that obstructs the movement path of the axle 76 when it is mounted on the housing 34B or the retainer 99B, thus hindering the movement of the axle 76. The housing 34B or the retainer 99B preferably includes a detachment prevention part that prevents the intermediate component from detaching from the housing 34B or the retainer 99B when the retainer 99B is removed from the housing 34B. The detachment prevention part may, for example, be a fitting structure having a protrusion provided on either the housing 34B or the intermediate component, and a recess provided on the other side of the housing 34B and the intermediate component that is embedded in the protrusion. Furthermore, the detachment prevention part may also, for example, be a fitting structure having a protrusion provided on either the retainer 99B or the intermediate component, and a recess provided on the other side of the retainer 99B and the intermediate component that is embedded in the protrusion. The retaining force of the fitting structure only needs to be sufficient to prevent the intermediate component from detaching from the housing 34B or the retainer 99B due to its own weight; for example, a retaining force of tens to hundreds of grams. It can also be sufficient to prevent the intermediate component from easily separating from the housing 34B or the retainer 99B under the force of an adult female's finger, for example, a force measured in kilograms. The detachment prevention part is intended to prevent the loss of the intermediate component when the housing 34B is removed from the retainer 99B, and may not have the function of firmly retaining the intermediate component to the housing 34B or the retainer 99B.

[0183] In the intake body 6B of this embodiment, by releasing the second retaining mechanism 85 and removing the retaining body 99B from the housing 34B, the axle 76 of the second wheel 66B can be easily removed from the intake body 33B. Furthermore, by removing the roller 77 of the second wheel 66B from the recess 88B, the recess 88B of the housing 34B can be easily opened. Dust that has entered the inner side of the recess 88B is no longer hidden by the second wheel 66B but is exposed to the concealed portion 36h on the bottom surface 36b of the lower housing 36B, thus making it easy to remove, or it can be easily removed from the recess 88B while still attached to the roller of the second wheel 66B.

[0184] Furthermore, with the axle 76 detached from the intake body 33B, the user can easily clean up the rollers 77 of the second wheel 66. Therefore, the user can easily remove dust adhering to the second wheel 66B, as well as dust adhering to the axle 76 and rollers 77.

[0185] Figure 20 This is an enlarged bottom view of another example of the inhalation port body according to an embodiment of the present invention.

[0186] like Figures 2 to 17As shown, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A of this embodiment are provided with a second retaining mechanism 85, which retains the wheel retainer 69 and the second wheel 66 together so that they can be detached from the suction inlet body 33 without tools.

[0187] In addition, such as Figure 20 As shown, the electric vacuum cleaner 1 and the suction inlet bodies 6, 6A of this embodiment may also include a second retaining mechanism 85A, which retains the wheel retainer 69 and the second wheel 66 together by means of a tool, so that they can be detached from the suction inlet body 33. In this case, the second retaining mechanism 85A is a latching member that can be fastened by a tool, such as a screwdriver, or a screw 141. The suction inlet body 33 has an inner screw portion for fastening the screw 141, and the wheel retainer 69 has an opening through which the screw 141 is inserted. The head of the screw 141 preferably does not protrude from the bottom surface 33b of the suction inlet body 33. Therefore, the wheel retainer 69 has a recess 142 for receiving the head of the screw 141. The recess 142 preferably opens toward the rear of the suction inlet body 33 to prevent dust from clogging it.

[0188] Similarly, in the case where the retaining bodies 99, 99A, and 99B do not have the function of retaining the second wheel 66, the intake bodies 6, 6A, and 6B may be equipped with a second retaining mechanism 85 that allows them to be detached from the intake body 33 without tools, or a second retaining mechanism 85A that allows them to be detached from the intake body 33 by means of a tool.

[0189] As described above, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A of this embodiment include: a wheel retainer 69 having a surface side 69f facing the same direction as the bottom surface of the housing 34, an inner side 69b facing the bottom surface of the housing 34, and a wheel mounting port 68 penetrating the surface and the inner side, and is mounted on the bottom of the housing 34; and a second wheel 66 having an axle 76 disposed in the wheel mounting port 68 from the inner side 69b of the wheel retainer 69 toward the surface side 69f and held between the housing 34 and the wheel retainer 69. Therefore, the user can remove the wheel retainer 69 from the housing 34 and easily maintain the second wheel 66 from both the inner side 69b and the surface side 69f of the wheel retainer 69. The user can easily remove dust adhering to the second wheel 66, and can easily remove dust wrapped around the axle 76 and roller 77 of the second wheel 66 by stretching the ends exposed to the inner side 69b or the surface side 69f of the wheel retainer 69. When linear dust becomes entangled in the second wheel 66, the user can use a tool such as scissors to cut off the portion exposed to the inner side 69b or outer side 69f of the wheel retainer 69, or temporarily remove the second wheel 66 from the wheel retainer 69 to untangle and remove the dust. Furthermore, the user can easily clean the second wheel 66 from both the inner side 69b and outer side 69f of the wheel retainer 69 without using scissors or tools to pry it open. That is, the user does not need to remove and reassemble the axle 76 of the second wheel 66 from the wheel retainer 69 each time. Therefore, the electric vacuum cleaner 1 and the suction inlet bodies 6, 6A can have a support structure for the second wheel 66 that minimizes wear and tear. In addition, the electric vacuum cleaner 1 and the suction inlet bodies 6, 6A can also reduce the risk of the second wheel 66 being lost. The electric vacuum cleaner 1, which has an intermediate component 83 configured between the housing 34 and the wheel retainer 69, and the suction inlet bodies 6 and 6A also achieve the same effect.

[0190] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A of this embodiment have an axle detachment prevention part 79, which prevents the axle 76 from detaching from the wheel retainer 69 and the second wheel 66 from detaching from the wheel retainer 69 when the wheel retainer 69 is removed from the suction inlet body 33. Therefore, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A can significantly reduce the risk of the second wheel 66 being lost.

[0191] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A of this embodiment are equipped with rollers 77 that rotate integrally with the axle 76. Compared with the method of supporting the rollers 77 to rotate via the axle 76, the method of supporting the axle 76 to rotate via the wheel retainer 69 can prevent filamentous dust from getting tangled in the second wheel 66.

[0192] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A of this embodiment include a rotating cleaning body 31. This rotating cleaning body 31 is rotatable and detachably held in the suction inlet body 33 and disposed in the suction inlet 19. When the wheel retainer 69 is installed in the suction inlet body 33, the rotating cleaning body 31 is prevented from being removed from the suction inlet body 33. Therefore, when cleaning the second wheel 66, the user can remove the rotating cleaning body 31 from the suction inlet body 33 and clean the second wheel 66 and the rotating cleaning body 31 together.

[0193] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6, 6A of this embodiment have elongated sealing portions 63, 63A, which can be separated from the housing 34 when the wheel retainer 69 is removed from the housing 34. The sealing portions 63, 63A may be close to the surface being vacuumed and come into contact with the surface along with the multiple wheels 62 of the suction inlet bodies 6, 6A, making them prone to dirt accumulation. The electric vacuum cleaner 1 and the suction inlet bodies 6, 6A can securely fix the sealing portions 63, 63A to the suction inlet body 33 by means of the wheel retainer 69 installed on the housing 34; on the other hand, the sealing portions 63, 63A can be removed from the suction inlet body 33 by removing the wheel retainer 69 from the housing 34. The user can easily and separately clean, for example, wash with water, the sealing portions 63, 63A removed from the housing 34.

[0194] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A of this embodiment have an axle 76 and a sealing portion 63 arranged in a straight line when viewed from below the suction inlet body 33. Therefore, the distance between the sealing portion 63 and the surface being vacuumed is stable, thereby ensuring the stable sealing function of the sealing portion 63.

[0195] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6, 6A of this embodiment are provided with a second retaining mechanism 85, which holds the wheel retainer 69 to the housing 34 so that the wheel retainer 69 and the second wheel 66 can be detached from the housing 34 without tools. Therefore, the user can easily tidy up the second wheel 66.

[0196] Furthermore, the electric vacuum cleaner 1 and the suction inlet bodies 6, 6A of this embodiment may also include a second retaining mechanism 85A, which holds the wheel retainer 69 to the housing 34 so that the wheel retainer 69 and the second wheel 66 can be detached from the housing 34 together using a tool. Therefore, the second retaining mechanism 85A and the second wheel 66 will not easily fall off.

[0197] Therefore, the electric vacuum cleaner 1 and the suction inlet bodies 6 and 6A according to this embodiment can easily remove dust entangled on the second wheel 66 provided on the bottom surface 33b of the suction inlet body 33 and dust entering the space where the second wheel 66 is housed, i.e., the so-called tire chamber, and have a support structure for the second wheel 66 with low wear and tear.

[0198] Several embodiments of the present invention have been described. These embodiments are provided by way of example 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 modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, and are included in the scope of the invention as set forth in the claims and its equivalents.

Claims

1. An inhalation mouthpiece, characterized in that, have: The casing has an intake port; The first wheel is rotatably mounted on the aforementioned housing; The wheel retainer has an outer side facing the same direction as the bottom surface of the housing, an inner side facing the bottom surface of the housing, and a wheel mounting port that passes through the inside and outside. It can be detachably installed on the bottom surface of the housing from the outside without tools. The second wheel is disposed in the wheel mounting opening from the inner side of the wheel retainer toward the outer side, and has an axle held between the housing and the wheel retainer; and A retaining mechanism that holds the wheel retainer in the housing so that the wheel retainer can be detached from the housing without tools.

2. An inhalation mouthpiece, characterized in that, have: The casing has an intake port; The first wheel is rotatably supported on the aforementioned housing; The wheel retainer has an outer side facing the same direction as the bottom surface of the housing, an inner side facing the bottom surface of the housing, and a wheel mounting port that passes through the inside and outside. It can be detachably installed on the bottom surface of the housing from the outside without tools. An intermediate component is disposed between the aforementioned housing and the aforementioned wheel retainer; The second wheel is disposed in the wheel mounting opening from the inner side of the wheel retainer toward the outer side, and has an axle held between the intermediate member and the wheel retainer; and A retaining mechanism that holds the wheel retainer in the housing so that the wheel retainer can be detached from the housing without tools.

3. The inhalation port body according to claim 1 or 2, characterized in that, The wheel retainer has an axle detachment prevention part, which prevents the axle from detaching from the wheel retainer and the second wheel from detaching from the wheel retainer when the wheel retainer is removed from the housing.

4. The inhalation port body according to claim 1 or 2, characterized in that, The second wheel described above has the aforementioned axle and a roller that rotates integrally with the aforementioned axle.

5. The inhalation port body according to claim 1 or 2, characterized in that, The aforementioned suction inlet body includes a rotating cleaning body that is rotatable and detachably held in the aforementioned housing and disposed in the aforementioned suction inlet. When the aforementioned wheel retainer is installed in the aforementioned housing, the rotating cleaning body is prevented from being removed from the aforementioned housing.

6. The inhalation port body according to claim 1 or 2, characterized in that, The aforementioned inlet body has an elongated sealing portion that extends along the edge of the aforementioned inlet and protrudes from the bottom surface of the aforementioned housing. When the aforementioned wheel retainer is installed in the aforementioned housing, it is fixed to the aforementioned housing together with the aforementioned wheel retainer. When the aforementioned wheel retainer is removed from the aforementioned housing, it can be separated from the aforementioned housing.

7. The inhalation port body according to claim 6, characterized in that, The aforementioned axle and the aforementioned sealing part are arranged in a straight line.

8. An electric vacuum cleaner, characterized in that, have: Vacuum cleaner body; An electric blower, housed within the main body of the vacuum cleaner, generates negative pressure; and The intake body according to any one of claims 1 to 7 is used to draw in air by the negative pressure generated by the electric blower described above.

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