JP2014000137A - Vacuum cleaner and suction opening body thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor brush which is easy to assemble while effectively preventing the relative rotation of a case body with respect to a connection pipe when the floor brush is lifted from a floor surface, and a vacuum cleaner comprising the floor brush.SOLUTION: A floor brush 23 comprises: a case body 31 extending in a horizontal direction; a connection pipe 32 fitted into the case body 31 rotatably at least around a shaft center; and a rotation stopper 68 positioned between the outer peripheral surface of the connection pipe 32 and the case body 31 opposite to the outer peripheral surface of the connection pipe 32. The rotation stopper 68 is brought into contact with at least one of the outer peripheral surface of the connection pipe 32 and the case body 31 to thereby increase relative rotation resistance between the outer peripheral surface of the connection pipe 32 and the case body 31.

Description

  Embodiments of the present invention relate to a suction port body of a vacuum cleaner having a rotary tube that can be rotated at least around an axis with respect to a case body extending in the left-right direction, and a vacuum cleaner including the same.

  Conventionally, a floor brush as a suction port body used in a vacuum cleaner has a laterally extending case body, that is, a horizontally long case body and a rotating tube that is connected to the case body so as to be rotatable around an axis or the like. I have. In the case body, a suction port communicating with the rotary tube is opened on a lower surface facing the floor surface as a surface to be cleaned. Moreover, the rotary brush as a rotary cleaning body is rotatably arrange | positioned at this suction inlet. This rotating brush is rotationally driven by an electric motor as driving means accommodated in the case body, for example.

  And, for example, in a canister-type vacuum cleaner, such a rotating brush is connected to an extension pipe connected to the distal end side of the hose body connected to the cleaner body, and the user connects the distal end portion of the hose body. The floor brush is moved back and forth on the floor surface by gripping the gripping portion of the door, and the dust scraped by the rotating brush or the like is sucked from the suction port and cleaned.

Japanese Patent No. 4334292

  In the case of such a floor brush, when the floor brush is lifted away from the floor surface, for example, when the cleaning position is changed or the electric vacuum cleaner is transported, the motor side of the case body depends on the weight of the motor. There is a case where it is tilted by rotating downward relative to the rotating tube. And when a case body inclines in this way, it is difficult to place a floor brush on a floor surface again.

  In order to prevent such inclination of the case body, in the configuration described in Patent Document 1, stoppers are respectively provided on the outer peripheral surfaces of the case body and the rotary tube, and when the case body is inclined, They are in contact with each other to regulate the inclination.

  However, in the case of such a stopper, since the case body will rotate until the stoppers come into contact with each other, if the rotation angle of the case body with respect to the rotating tube is restricted to be small by the stopper so that the case body does not tilt greatly, Usability during normal cleaning is reduced.

  Further, for example, although it is conceivable to provide a rotation click at a connection position of the rotary tube with respect to the case body, the case body is inclined at a position other than the click position.

  Furthermore, although it is conceivable to incorporate a rotation preventing member that increases the rotational resistance between the case body and the rotating tube into the rotating shaft of the rotating tube, the rotating shaft of the rotating tube is located inside the case body, Incorporation is not easy, and it is difficult to secure a sufficient size of the rotation preventing member, and it becomes worn over time, and a predetermined rotation resistance cannot be obtained.

  A problem to be solved by the present invention is to provide a suction port body for an electric vacuum cleaner that can be easily assembled while effectively preventing relative rotation of the case body with respect to the rotary tube during lifting from the surface to be cleaned. It is providing the vacuum cleaner provided with.

  The suction port body of the vacuum cleaner of the embodiment has a case body that extends in the left-right direction. Further, the suction port body has a rotating tube fitted to the case body so as to be rotatable at least around the axis. Further, the suction port body has a rotation preventing body positioned between the outer surface of the rotary tube and the case body facing the outer surface. The rotation stopper increases the relative rotational resistance between the outer surface of the rotating tube and the case body by contacting either the outer surface of the rotating tube or the case body.

It is a vertical side view which shows the suction inlet body of the vacuum cleaner of 1st Embodiment. It is sectional drawing which shows typically the II equivalent position of FIG. 3 of a suction inlet same as the above. It is a top view which shows a suction inlet same as the above. It is a perspective view which shows a suction port body same as the above from the lower side. It is a perspective view which shows a suction inlet body same as the above from the upper side. It is a perspective view which shows the vacuum cleaner provided with the suction inlet same as the above. It is sectional drawing which shows typically a part of suction inlet of the vacuum cleaner of 2nd Embodiment.

  The configuration of the first embodiment will be described below with reference to FIGS.

  In FIG. 6, reference numeral 11 denotes a so-called canister-type vacuum cleaner. The vacuum cleaner 11 is a vacuum cleaner body 12 and a tube which is an air passage forming body detachably connected to the cleaner body 12. Part 13.

  The vacuum cleaner main body 12 can turn and run on the floor F (FIG. 1) as a surface to be cleaned. The electric blower 18, a main body control unit (not shown) for controlling the operation of the electric blower 18, and these electric motors A cord reel device for supplying power to the blower 18 and the main body control unit, or a power supply unit such as a secondary battery is accommodated, and a dust collection unit (not shown) communicating with the suction side of the electric blower 18 is provided. . In addition, a main body suction port 19 is formed in the front portion of the cleaner body 12 so as to communicate with the dust collecting portion and to which the proximal end side of the tube portion 13 is connected.

  The pipe portion 13 includes a hose body 21, an extension pipe 22 made of, for example, synthetic resin that can be attached to and detached from the hose body 21, and a floor brush 23 as a suction port that can be attached to and detached from the extension pipe 22. And.

  The hose body 21 includes a flexible hose portion 25, a connecting pipe portion 26 provided on the base end side (downstream side) of the hose portion 25 and connected to the main body suction port 19, and a distal end side of the hose portion 25. And a handy operating unit 27 provided on the (upstream side).

  The proximal end side (downstream side) of the extension pipe 22 is detachably connected to the hand operation unit 27. Further, the hand operating part 27 is formed with a grip part 28 that is gripped by the user so as to protrude to the base end side, and this grip part 28 is for setting the operation mode of the electric blower 18 to the main body control part. The setting button 29 is arranged.

  Further, as shown in FIGS. 1 to 6, the floor brush 23 sucks dust on the floor surface F by running on the floor surface F. Hereinafter, the front and rear direction and the left and right direction (both sides and width) are based on the traveling direction of the floor brush 23. The floor brush 23 has a longitudinally extending case body 31 extending in the left-right direction, that is, a horizontally long case body 31, and is rotatably connected to the rear part of the case body 31 and attached to the distal end side (upstream side) of the extension pipe 22. And a connecting pipe 32 as a rotating pipe that can be connected.

  The case body 31 includes, for example, a lower case 35 as a first case formed of synthetic resin, an upper case 36 as a second case, an air passage case 37 and a bumper 38 sandwiched from above and below by these cases 35 and 36, A front cover 39, which is a suction port cover attached to the front portion of the upper case 36, and open / close covers 40, 40 which are detachably attached to both sides of the lower case 35 are provided. And inside this case body 31, a suction chamber 41 communicating with the upstream side (front end side) of the connection pipe 32 is partitioned in the longitudinal direction in the left-right width direction at the front, and behind this suction chamber 41 and connected A drive chamber 42 and a control chamber 43 are defined on both sides of the pipe 32, a transmission chamber 44 is defined in a longitudinal direction in one side of the drive chamber 42, and a shaft is provided on the other side of the drive chamber 42. Branch room 45 is partitioned.

  The lower case 35 includes a lower case main body 46 as a first case main body formed in a flat rectangular frame shape having an open upper side, and a lower side as a first rotary tube receiving portion protruding from the rear portion of the lower case main body 46. A projecting portion 47 which is a rotary tube receiving portion is integrally provided. And since this protrusion part 47 protrudes from the center part of the left-right direction of the lower case main body 46, the lower case 35 becomes convex shape by planar view.

  In the lower case body 46, a horizontally long suction port 49 communicating with the suction chamber 41 is cut out at the front end. A rotary brush 51 as a rotary cleaning body is rotatably supported at the suction port 49.

  Here, the rotary brush 51 scrapes out dust and the like that has entered the floor surface F, and includes a shaft portion 53 formed in a long shape and a plurality of cleaning members 54 protruding from the shaft portion 53 in the radial direction. And.

  Bearing bodies 56, 56 are attached to both ends of the shaft portion 53, and these bearing bodies 56, 56 rotate with respect to a bearing portion (not shown) of the case body 31 inside the transmission chamber 44 and the shaft support chamber 45. It is held movable.

  Further, the cleaning member 54 is, for example, a bristle brush that sweeps out dust, or a blade that is formed in a plate shape by a soft member and blows out dust, and is arranged in a spirally twisted manner on the outer periphery of the shaft portion 53. ing.

  Further, the protruding portion 47 is formed with a lower curved portion 58 as a first curved portion curved in a semi-cylindrical shape having an axial direction along the front-rear direction at the center portion. In addition, a notch 59 is cut out at the rear end of the projecting portion 47, and the floor brush 23 (case body 31) is placed on the floor F in the notch 59. A traveling wheel 60 that rotates following contact with F is rotatably supported so as to have an axial direction along the left-right direction.

  The lower curved portion 58 is formed to be recessed downward so that the connecting pipe 32 can be rotated around its axis (around the axis C), that is, in the circumferential direction.

  Further, the upper case 36 is formed in a quadrangular shape that covers and attaches the upper side of the lower case 35. A front notch 64 that communicates with the suction port 49 and is covered by the front cover 39 is cut out at the front of the upper case 36. Further, on both sides of the middle position in the front-rear direction of the upper case 36, slit-shaped dust-absorbing openings 65, 65 for sucking in-air dust, that is, house dust, are opened. In the center of the rear portion of the upper case 36, a bowl-shaped upper curved portion 66 is formed as a second curved portion that is curved in a dome shape. The upper curved portion 66 is formed so as to protrude upward so that the connecting pipe 32 can be rotated around its axis (around the axis C), that is, in the circumferential direction. That is, the upper curved portion 66 and the lower curved portion 58 constitute a fitted section 67 having a circular cross section (cylindrical shape) into which the distal end side, which is the upstream end side of the connection pipe 32, is fitted. Then, on the inner peripheral surface, that is, the lower surface of the upper curved portion 66, the connecting pipe 32 is rotated around the axis (around the axis C) with respect to the case body 31 (the fitted portion 67 of the case body 31). An anti-rotation body 68 serving as a turning resistance at the time is attached via an attaching portion 69 which is an attaching portion.

  Here, the anti-rotation body 68 is formed of, for example, a nonwoven fabric such as a raised cloth, and is arranged in a belt shape along the circumferential direction on the inner peripheral surface of the upper curved portion 66 (inserted portion 67).

  Further, the air passage case 37 is formed in a cylindrical shape that gradually increases in diameter from the rear end side that is the downstream side to the front end side that is the upstream side, and extends along the front-rear direction at the center in the left-right direction of the case body 31. And have an axial direction. Further, the front end side of the air passage case 37 communicates with the suction chamber 41, and the rear end side thereof is airtightly connected to the upstream side of the connection pipe 32 and communicates with the connection pipe 32. That is, the air passage case 37 communicates the suction chamber 41 (suction port 49) and the connecting pipe 32.

  The bumper 38 is for preventing the obstacles from being scratched when the vicinity of the obstacles such as the wall is cleaned by the floor brush 23. The bumper 38 is formed of a member such as an elastic elastomer, for example. Arranged from both sides of 31 to both sides of front notch 64.

  The front cover 39 is formed in a longitudinal shape in the left-right direction, and has a plate shape that is curved so as to protrude to the front side in a sectional view. Further, the upper end of the front cover 39 is pivotally supported on both the left and right sides of the front notch 64 and is urged toward the front. Then, when the front side of the floor brush 23 is brought close to an obstacle such as a wall, the front cover 39 rotates backward against the urging force by coming into contact with the obstacle. The opening area of the port 49 is reduced to increase the degree of vacuum of the suction port 49 (suction chamber 41).

  The opening / closing covers 40, 40 are for opening and closing both sides of the suction port 49, that is, the transmission chamber 44 and the shaft support chamber 45. The bearing bodies 56 and 56 of the rotary brush 51 can be removed from the bearing portion in a state where the transmission chamber 44 and the shaft support chamber 45 are opened by the opening and closing covers 40 and 40, and the bearing bodies 56 and 56 are removed from the bearing portion. The rotary brush 51 can be detached from the case body 31 by removing the case body 31.

  Further, the suction chamber 41 is accommodated in a state in which the rotary brush 51 is fitted. Further, the suction chamber 41 communicates with the outside of the case body 31 through a suction port 49, a front cutout portion 64, and dust suction openings 65 and 65.

  Further, the drive chamber 42 accommodates an electric motor 71 as drive means for driving the rotary brush 51 to rotate. That is, the electric motor 71 is located on the side (one side) with respect to the axis C of the connecting pipe 32. Further, the electric motor 71 is disposed so as to have a rotating shaft 71a along the left-right direction. The electric motor 71 is driven by power supply from the cleaner body 12 side, for example.

  Further, the control chamber 43 accommodates a control unit 72 that controls the drive state (drive and stop) of the electric motor 71 and the like. That is, the control unit 72 is located on the side (the other side) with respect to the axis C of the connection pipe 32. Further, the control unit 72 is configured by mounting various components on a substrate, for example, and receives power from the cleaner body 12 side. The control unit 72 switches between driving and stopping of the electric motor 71 in accordance with the operation of the setting button 29.

  Here, the control unit 72 is configured to be lighter than the electric motor 71. Therefore, the floor brush 23 (case body 31) is relatively heavy on one side, that is, on the motor 71 side, with respect to the connection pipe 32 (axis C of the connection pipe 32), and on the other side, that is, on the control unit 72 side. The weight of is relatively light. In other words, the left and right center-of-gravity balance of the floor brush 23 (case body 31) is biased to one side (the motor 71 side).

  Further, the transmission chamber 44 accommodates a pulley 74 and a timing belt 75 that constitute transmission means for transmitting the driving force of the electric motor 71 to the rotating brush 51. The pulley 74 is attached to the rotating shaft 71a of the electric motor 71. The timing belt 75 is wound endlessly between one bearing body 56 inserted into the transmission chamber 44 and the pulley 74.

  On the other hand, the connecting pipe 32 is connected to the upstream rotating portion as a first rotating portion that can rotate about the axis (around the axis C), that is, the front rotating portion 77 that is a fitting portion, and the front rotating portion 77. And a downstream rotating portion serving as a second rotating portion that is pivotally supported so as to be rotatable, that is, a rear rotating portion 78 that is a rotating tube main body.

  The front rotating portion 77 is formed in a cylindrical shape having an axial direction along the front-rear direction, and is pivotally supported in a state where the front rotating portion 77 is fitted into the fitted portion 67 of the case body 31 and is prevented from being detached from the outer periphery of the air passage case 37. It can rotate around the axis, that is, around the axis C (circumferential direction). Further, the front outer peripheral upper part which is the upstream side of the front rotating part 77, that is, the position facing the upper lower surface (inner peripheral surface) of the inserted portion 67 of the case body 31 is weaker facing the rotation stopper 68. They are in contact with each other and are in sliding contact with the rotation stopper 68 when rotating around the axis (around the axis C). Further, on the rear side, which is the downstream side of the front rotation part 77, a notch part 79 for rotation is formed to avoid interference when the rear rotation part 78 rotates with respect to the front rotation part 77. ing.

  Further, the rear rotating portion 78 is a portion that is detachably connected to the upstream end (tip) of the extension tube 22, and is formed in a cylindrical shape having an axial direction along the front-rear direction, and the shaft of the front rotating portion 77 By being pivotally supported on both sides of the turning notch 79 by a turning shaft along a direction orthogonal to the direction, it can be turned to the turning notch 79 side and the non-turning notch 79 side. It has become. Therefore, for example, in the neutral position where the front side rotation part 77 is not rotated with respect to the case body 31, the rear side rotation part 78 is rotatable in the vertical direction, and the front side rotation part 77 is At the position rotated 90 ° around the axis (around the axis C), the rear rotating part 78 can rotate in the left-right direction.

  Next, the operation of the first embodiment will be described.

  When manufacturing the floor brush 23, the traveling wheel 60, the electric motor 71, the control unit 72, the bumper 38, and the like are assembled to the pre-formed lower case 35, and the pre-formed rotating part 77 of the connecting pipe 32 is attached to the front rotating part 77. The air passage case 37 is inserted and connected to the lower case 35, and the anti-rotation body 68 is previously attached to the upper curved portion of the insertion portion 67 from above while sandwiching the air passage case 37 and the bumper 38 with respect to the lower case 35. An upper case 36 attached via an attaching portion 69 is placed on the inner peripheral surface of 66, and the lower case 35 and the upper case 36 are fastened and fixed by screws or the like. As a result, the anti-rotation body 68 comes into contact with the upper side of the front rotating portion 77.

  Next, the previously formed bearing bodies 56 and 56 of the rotating brush 51 are pivotally supported on the bearing portions of the transmission chamber 44 and the shaft support chamber 45, and the pulley 74 attached to the rotating shaft 71a of the electric motor 71 and one bearing body 56 After the timing belt 75 is wound therebetween, the opening / closing covers 40, 40 are attached to the lower case 35 to cover the transmission chamber 44 and the shaft support chamber 45, whereby the floor brush 23 is completed.

  When cleaning, the user first connects the hose body 21 to the main body suction port 19 of the vacuum cleaner body 12 through the connecting pipe portion 26, and performs a hand operation on the tip side of the hose body 21. The extension pipe 22 and the floor brush 23 are sequentially connected to the portion 27.

  Next, when the user who holds the grip portion 28 operates the predetermined setting button 29 in a state where the floor brush 23 is placed on the floor surface F and power can be supplied from the power supply portion to the main body control portion and the electric blower 18. The main body control unit controls the input of the electric blower 18 according to the operation mode set by the setting button 29, and the electric blower 18 is driven.

  Further, the user causes the floor brush 23 to run forward and backward on the floor surface F, and thereby sucks dust together with air from the suction port 49 on the front end side of the floor brush 23 by the negative pressure generated by driving the electric blower 18. From the dust suction openings 65, 65, dust in the air that has risen above the case body 31 of the floor brush 23, that is, house dust, is sucked.

  Thus, when the user grips the grip portion 28 and causes the floor brush 23 to travel on the floor surface F, the floor brush 23 is pressed against the floor surface F. Therefore, the anti-rotation body 68 is connected to the lower surface of the upper curved portion 66 of the fitted portion 67 that is the inner surface of the case body 31 that faces the outer surface (outer peripheral surface) of the upper portion of the connection tube 32 (the front rotating portion 77 of the connection tube 32). Therefore, due to the reaction force from the floor surface F, the rotation preventing body 68 is relatively upward with respect to the outer peripheral surface on the upper side of the connecting pipe 32, that is, on the upper side of the front rotating portion 77 of the connecting pipe 32. And the strength of contact between the connecting pipe 32 (the front rotating part 77 of the connecting pipe 32) and the rotation stopper 68 is reduced, and the connecting pipe 32 (the front rotating part 77 of the connecting pipe 32) is received. Rotation resistance around the axis of (around the axis C) decreases. Accordingly, since the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) can be easily rotated around the axis (around the axis C) with respect to the case body 31, the floor brush 23 is easily handled. Become easier to clean.

  Further, the user appropriately rotates the rotating brush 51 according to the type of the floor surface F. At this time, when the user operates the predetermined setting button 29, the control unit 72 controls the input of the electric motor 71 according to the operation of the setting button 29, the electric motor 71 is driven, and the driving of the electric motor 71 is rotated. By being transmitted to the bearing body 56 via the pulley 74 and the timing belt 75 attached to the shaft 71a, the rotating brush 51 rotates, and the dust on the floor surface F is removed by the cleaning member 54.

  Then, the air sucked together with dust from the floor brush 23 becomes a suction wind, and the dust is carried from the main body suction port 19 to the dust collecting part through the extension pipe 22 and the hose body 21, and the dust is collected in this dust collecting part. Collect.

  Thereafter, the suction air from which the dust has been removed is sucked into the electric blower 18 and passes through the electric blower 18 to become exhaust air, and from the exhaust port (not shown) provided at the rear of the cleaner main body 12 or the like, the cleaner main body Exhausted to 12 outside.

  When cleaning is completed and the electric vacuum cleaner 11 is stored, the main body control unit stops the electric blower 18 by operating the setting button 29.

  When the floor brush 23 is lifted from the floor surface F, for example, when the electric vacuum cleaner 11 is transported, the case body 31 side receives a load relative to the connecting pipe 32 due to its own weight. Therefore, the anti-rotation body 68 is connected to the lower surface of the upper curved portion 66 of the fitted portion 67 that is the inner surface of the case body 31 that faces the outer surface (outer peripheral surface) of the upper portion of the connection tube 32 (the front rotating portion 77 of the connection tube 32). Therefore, the rotation prevention body 68 receives a force in a direction approaching relatively downward with respect to the outer peripheral surface of the upper side of the connection pipe 32, that is, the upper side of the front rotating portion 77 of the connection pipe 32, The strength of contact with the outer peripheral surface of the front rotating portion 77 of the connecting pipe 32 is increased, and the rotational resistance around the axis of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) (around the axis C) is reduced. To increase. Therefore, the case body 31 having a different left and right weight balance depending on the weight of the electric motor 71 rotates relative to the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) as shown by an imaginary line in FIG. Tilting more effectively.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, instead of the rotation stopper body 68 of the first embodiment, a rotation stopper body 81 is arranged on the lower side of the inner periphery of the fitted portion 67 of the case body 31, and this rotation The stopper 81 is urged by a coil spring 82 as urging means toward the outer peripheral surface which is the outer surface of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32).

  Here, the anti-rotation body 81 is formed of, for example, a nonwoven fabric such as a brushed cloth, and the lower side is held by the holding body 84 curved in an arc shape, and the connection pipe 32 (the front side rotating portion 77 of the connection pipe 32) It is in the shape of a belt curved in an arc along the lower outer peripheral surface.

  The coil spring 82 has a lower end side connected to an upper portion of the lower curved portion 58 that is an inner periphery of the insertion portion 67 of the case body 31, and an upper end side connected to the holding body 84. It is energizing upward. The urging force by the coil spring 82 is extremely weak, and is set to such an extent that the rotation stopper 81 is brought into slight contact with the lower outer peripheral surface of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32).

  Since the rotation stopper 81 is biased relatively to the lower surface of the connection pipe 32 (the front rotating portion 77 of the connection pipe 32) in contact with the rotation stopper 81, the coil spring 82 is biased. And the contact of the non-rotating body 81, the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) is always kept constant by the coil spring 82 regardless of the wear state of the non-rotating body 81. Touch the lower surface of the.

  Accordingly, since the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) can be easily rotated around the axis (around the axis C) with respect to the case body 31, the floor brush 23 is easily handled. In this case, the left and right weight balance differs depending on the weight of the motor 71 and the like due to the rotational resistance generated by the rotation stopper 81 even if the rotation stopper 81 is worn. It is possible to more effectively prevent the body 31 from rotating and tilting relative to the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32).

  Further, since the urging force of the non-rotating body 81 by the coil spring 82 is considerably weak, the shaft of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) when the floor brush 23 is placed on the floor surface F and cleaned. The rotational resistance around the center (around the axis C) is not too large, and the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) is relatively relative to the case body 31 during this cleaning. It is easy to rotate around the axis (around axis C).

  In the second embodiment, if the coil spring 82 is configured to contact the outer surface of the connection pipe 32 (the front rotating portion 77 of the connection pipe 32) with a constant contact force, the coil spring 82 is connected. It may be arranged not only on the lower side of the pipe 32 (the front rotating portion 77 of the connecting pipe 32) but also on the side or the upper side.

  According to at least one embodiment described above, the connecting pipe 32 (front side rotating portion of the connecting pipe 32) is fitted to the case body 31 so as to be rotatable at least around the axis (around the axis C). 77) and the outer peripheral surface of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) between the outer peripheral face of the connecting pipe 32 and the case body 31 facing the outer peripheral face. When the floor brush 23 is lifted from the floor surface F by providing the anti-rotation bodies 68 and 81 that increase the relative rotational resistance between the outer peripheral surface of the front rotating portion 77) and the case body 31, the anti-rotation body By the rotation resistance provided by 68 and 81, relative rotation of the case body 31 with respect to the connection pipe 32 can be effectively prevented.

  In addition, the rotation stoppers 68 and 81 are positioned between the outer surface of the connection pipe 32 (the front rotating portion 77 of the connection pipe 32) and the inner surface of the case body 31 to prevent rotation when the floor brush 23 is assembled. Without requiring the process of incorporating the bodies 68 and 81 into a complicated interior, the detent bodies 68 and 81 can be easily assembled by simply assembling the lower case 35, the connecting pipe 32, and the upper case 36 in order, and the assembly is easy. become.

  In particular, in the case of the floor brush 23 including the rotating brush 51 and the electric motor 71 that rotationally drives the rotating brush 51, the electric motor 71 is lateral to the axis C of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32). When the floor brush 23 is lifted from the floor surface F, the case body 31 is located with respect to the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32). Easy to turn to one side. Therefore, by providing the anti-rotation bodies 68 and 81 as described above, the case body with respect to the connection pipe 32 (the front side rotating portion 77 of the connection pipe 32) at the time of lifting also in the floor brush 23 including the rotary brush 51 and the electric motor 71. The relative rotation of 31 can be reliably prevented.

  Further, by providing such a floor brush 23, the handling of the floor brush 23 during cleaning is good, and the case body 31 is also connected to the connecting pipe 32 (the front side of the connecting pipe 32 when the floor brush 23 is lifted). It is possible to provide the electric vacuum cleaner 11 which is not easily inclined with respect to the rotating portion 77) and can easily remount the floor brush 23 without damaging the floor surface F.

  In each of the above embodiments, the anti-rotation bodies 68 and 81 may be disposed on the outer surface of the connecting pipe 32 (the front rotating portion 77 of the connecting pipe 32) and contact the case body 31 side. In other words, these anti-rotation bodies 68 and 81 only need to be positioned between the case body 31 and the outer surface of the connection pipe 32 fitted into the case body 31.

  Further, the vacuum cleaner 11 is not limited to the canister type, for example, a so-called upright type in which the connecting pipe 32 of the floor brush 23 is connected to the lower portion of the vacuum cleaner body 12 that is vertically long can be used. Can be used.

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

11 Vacuum cleaner
12 Vacuum cleaner body
18 Electric blower
23 Floor brush as inlet
31 Case body
32 Connecting pipe as rotating pipe
51 Rotating brush as rotating cleaning body
68, 81 Non-rotating body
71 electric motor
82 Coil spring as urging means C shaft center

Claims (5)

A case body extending in the left-right direction;
A rotating tube fitted to the case body so as to be rotatable at least around an axis,
The outer surface of the rotating tube and the case body are located between the outer surface of the rotating tube and the case body opposed to the outer surface, and come into contact with either the outer surface of the rotating tube or the case body. A suction port body for a vacuum cleaner, comprising: a detent body that increases a relative rotational resistance of the vacuum cleaner. A rotating cleaning body rotatably arranged on the case body;
The suction port of the vacuum cleaner according to claim 1, further comprising: an electric motor that is housed in the case body at a position lateral to the axis of the rotary tube and that rotationally drives the rotary cleaning body. body. The suction port body of the vacuum cleaner according to claim 1 or 2, wherein the rotation preventing body is disposed on an inner surface of the case body facing an outer surface of an upper portion of the rotary tube. The urging means for urging the rotation preventing body relative to either one of the outer surface of the rotating tube and the inner surface of the case body which is in contact with the rotation stopping body is provided. The suction inlet body of the vacuum cleaner as described in any one of 3. A vacuum cleaner body containing an electric blower,
A vacuum cleaner comprising: a suction port body according to any one of claims 1 to 4, wherein a rotary tube communicates with a suction side of the electric blower.

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