JP6371050B2 - Vacuum cleaner and its suction port - Google Patents

Description

  Embodiments of the present invention relate to a suction port body of a vacuum cleaner having a rotary tube that is connected to a fixed tube so as to be rotatable at least in a direction around an axis, and a vacuum cleaner including the same.

  Conventionally, a floor brush as a suction port that is connected to an extension tube of a vacuum cleaner or a main body of a vacuum cleaner extends in the left-right direction, that is, a horizontally long case body and an axial center with respect to the rear portion of the case body. And a connecting pipe connected to be rotatable. In the case body, a suction port communicating with the connecting pipe is opened on the lower surface facing the floor surface as the surface to be cleaned. In addition, a fixed tube for rotatably connecting the connecting tube is disposed at the rear portion of the case body. On the other hand, a connection pipe provided with a rotary pipe that is rotatably connected to the fixed pipe is provided at the front portion (upstream end portion) of the connection pipe.

  In such a floor brush, the lead wire for supplying electric power from the cleaner body side to the floor brush side is disposed by using the rotating shaft of the rotary tube. However, in recent years, in order to reduce the height of the connecting pipe and the extension pipe connected to the connecting pipe so that the floor surface of a gap with a low height such as under the bed can be cleaned, the connecting pipe (rotating pipe) is used. ) Is connected to the case body (fixed tube) so as to be rotatable around the axis. Therefore, in this case, it is preferable to regulate the rotation angle of the connecting pipe with respect to the case body so as not to damage the lead wire. For example, a stopper part that restricts the rotation angle to a predetermined angle or less by abutting each other on the fixed pipe and the connection pipe is provided, and it is required to more reliably restrict the rotation by such a stopper part. .

JP-A-6-217908

  The problem to be solved by the present invention is to provide a suction port body of a vacuum cleaner that can more reliably prevent the rotating tube of the connection tube from rotating relative to the fixed tube of the case body, and a vacuum cleaner including the same. That is.

The suction port body of the vacuum cleaner of the embodiment has a case body including a fixed tube having a communication hole . In addition, the suction port body has a connection pipe including a rotary pipe that has a wiring insertion hole communicating with the communication hole and is connected to the fixed pipe so as to be rotatable at least in the direction around the axis. This suction inlet body has a lead wire for power feeding from the cleaner body side inserted through the communication hole and the wiring insertion hole. Further, the suction port body has a first stopper for rotation prevention that is provided on one of the fixed tube and the rotating tube. The suction port body is provided on the other of the fixed tube and the rotating tube, and communicates with the rotation angle of one side and the other side in the direction around the axis by contact with the side portion of the first stopper. And a first stopper portion that regulates each within a range in which communication between the wiring insertion hole and the wiring insertion hole is maintained . Further, the suction port body has a second stopper for preventing rotation, which is provided on one of the fixed tube and the rotating tube. The suction port body is provided on the other of the fixed tube and the rotating tube, and communicates with the rotation angle of one side and the other side in the direction around the axis by contact with the side of the second stopper. And a second stopper portion that regulates within a range that maintains communication between the wiring insertion hole and the wiring insertion hole . Then, in a state where the rotating tube is rotated in one side and the other side in the direction around the axis with respect to the fixed tube, the contact position between the side portion of the first stopper and the first stopper portion, The contact position between the side portion of the second stopper and the second stopper portion is a second imaginary line passing through the axis perpendicular to the first imaginary line passing through the first stopper and the axis when viewed from the axial direction. They are located on opposite sides of each other.

It is a front view showing a part of the suction port body of the vacuum cleaner of one embodiment from the rear, (a) shows a neutral position of a part of the suction port body of the same, (b) is one of the suction port body of the same (C) shows a state in which a part of the rotary tube of the suction port body is rotated to the other side with respect to the fixed tube. Show. FIG. 1B is a central sectional view of FIG. 1B, in which FIG. 1A shows a state in which an external force is applied downward with respect to the rotating tube, and FIG. 1B is an external force applied on the rotating tube upward. Indicates the state. (a) is a perspective view showing the neutral position of a part of the suction port body from the front, (b) is a state where a part of the rotary tube of the suction port body is rotated to one side with respect to the fixed tube. It is a perspective view shown from back. (a) is a perspective view showing a fixed tube, (b) is a perspective view showing a part of a rotating tube. It is a disassembled perspective view which shows a rotary tube same as the above. It is a perspective view which shows a part of inside of a suction inlet same as the above. It is a perspective view which shows the state which fell the connection pipe of the suction inlet body same as the above with respect to the case body. It is a perspective view which shows the state which reversed the suction inlet body same as the above. It is a top view which shows a suction inlet body same as the above from the top. It is a perspective view which shows the vacuum cleaner provided with the suction inlet same as the above.

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

  In FIG. 10, 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 is capable of turning and running on the floor as a surface to be cleaned, an electric blower 18, a main body control unit (not shown) that controls the operation of the electric blower 18, and the electric blower 18 and main body control. The power supply unit such as a secondary battery or the like is housed, and a dust collecting 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 body that can be attached to and detached from the extension pipe 22. I have.

  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.

  As shown in FIGS. 1 to 10, the floor brush 23 sucks in dust on the floor surface by running on the floor surface. Hereinafter, the front-rear direction and the left-right direction (both sides, width direction) are based on the traveling direction of the floor brush 23, and the up-down direction is the antigravity direction when the floor brush 23 is placed on a flat floor surface. And the direction of gravity. 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 portion of the case body 31 so as to be detachable from the distal end side (upstream side) of the extension tube 22. And a connecting pipe 32 to be connected. In the following, this floor brush 23 is in a state where the connecting pipe 32 is not rotated with respect to the case body 31, that is, a state where the connecting pipe 32 is positioned on the upper rear side along the center line in the left-right direction of the case body 31 ( The state shown in FIG. 10 will be described as a neutral position (neutral position).

  The case body 31 is formed of a member such as a synthetic resin, for example, and has a horizontally long case body 35 in a plan view, and a rectangular protrusion 36 that protrudes rearward from the center of the rear portion of the case body 35. Are formed in a convex shape in plan view. A substantially circular connection opening 37 is opened at the upper part of the projecting portion 36, which is the central portion of the rear portion of the case body 35, and the upstream end side (front end side) of the connection pipe 32 is connected to the connection opening 37. A fixed pipe 38 as an upstream pipe section to be connected is attached.

  In the case body 35, a suction opening (not shown) communicating with the connection opening 37 (fixed pipe 38) and the connection pipe 32 is defined. In addition, a horizontally long suction port 41 that communicates with the suction chamber and faces the floor surface is opened at the lower portion of the case body 35. A rotary brush 43 as a rotary cleaning body is rotatably disposed in the suction port 41. The rotating brush 43 scrapes dust that has entered the floor surface or polishes the floor surface, and is formed in a long shape. Both ends in the longitudinal direction are pivotally supported on both sides of the suction port 41. . The rotating brush 43 is rotationally driven by an electric motor 44 as a driving means housed in the case body 35 on the side (left side) of the connection pipe 32. The electric motor 44 is driven by a control unit 45 housed in the side (left side) opposite to the electric motor 44 of the connection pipe 32 in the case body 35, and is configured using a belt, a gear, or the like. The driving force is transmitted to the rotating brush 43 through the transmission means 46. The rotating brush 43 can be removed from the case body 35 (suction port 41) by removing cover portions 47 and 48 that are detachably disposed on both sides of the suction port 41 of the case body 35. .

  The fixed tube 38 is integrally formed of a member such as synthetic resin, for example, and has a substantially cylindrical fixed tube main body 51 and a flange portion 52 that protrudes from the outer periphery of the fixed tube main body 51. The fixed tube 38 is fixed so as not to rotate with respect to the case main body 35 (case body 31).

  The fixed pipe main body 51 is formed in a gradually increasing diameter from the rear end side, which is the downstream end, to the front end side, which is the upstream end, and the front end is shaped like an ellipse (oval) that is flat in the left-right direction. It communicates with the chamber (suction port 41). A cylindrical projecting tube portion 54 is concentrically provided at the rear end portion of the fixed tube body 51, and a projecting first stopper 55 is provided on the outer periphery of the projecting tube portion 54. Projected. Further, a groove 56 is formed continuously over the entire circumference of the outer peripheral portion at a position behind the fixed tube main body 51 and in front of the rear end portion.

  The protruding tube portion 54 is formed to have a slightly smaller diameter than the outer peripheral portion of the rear end portion of the fixed tube main body 51. Therefore, at the rear end portion of the fixed tube main body 51 outside the protruding tube portion 54, an annular shape is formed along the vertical direction intersecting (orthogonal) with respect to the axis C1 that is the central axis of the fixed tube 38. The contact surface 58 is formed. That is, the rear end portion of the fixed tube main body 51 is stepped with respect to the protruding tube portion 54.

  The first stopper 55 prevents the connection pipe 32 from rotating at a predetermined angle with respect to the case body 31 (fixed pipe 38) at the position of the one side 55a and the other side 55b. And it is located on the contact surface 58. The first stopper 55 is formed along the circumferential direction of the protruding tube portion 54, and the outer edge portion is substantially flush with the outer peripheral surface of the fixed tube main body 51. Further, the first stopper 55 is located, for example, in a central portion in the left-right direction below the protruding tube portion 54, that is, vertically downward (directly below) with respect to the axis C1.

  Further, the flange portion 52 is projected in a radial direction at a position in front of the groove portion 56 of the fixed tube main body 51, and comes into contact with the front end portion which is the upstream end portion of the connection tube 32, so that the connection tube 32 It is a control part which positions a front-end part. A second stopper 61 projects from a rear portion (regulating surface portion) 60 of the flange portion 52 that faces the connecting pipe 32. Further, a wiring insertion hole 62 is opened on one side (right side) of the flange portion 52 in the front-rear direction.

  The second stopper 61 prevents the connection pipe 32 from rotating at a predetermined angle with respect to the case body 31 (fixed pipe 38) at the position of one side 61a and the other side 61b. It is located in front of the first stopper 55 and radially outward of the fixed tube 38 (a position relatively distant from the axis C1). In addition, the other side 61b and one side 61a of the second stopper 61 are perpendicular to the first imaginary line L1 passing through the first stopper 55 and the axis C1 as viewed from the direction of the axis C1, and pass through the axis C1. At least a part of the first stopper 55 is located on the opposite side to the one side 55a and the other side 55b with respect to the two imaginary lines (imaginary plane) L2. That is, the other side 61b and one side 61a of the second stopper 61 are spaced apart from 90 ° to 270 ° with respect to the one side 55a and the other side 55b of the first stopper 55 in the direction around the axis (circumferential direction). It is arranged at the position. In the present embodiment, the second stopper 61 is located above the axis C1 and is biased to the other side (left side), for example, in the left-right direction. In other words, the second stopper 61 and the first stopper 55 are located on opposite sides with respect to a virtual horizontal plane passing through the axis C1. Further, the second stopper 61 is formed along the circumferential direction of the flange portion 52, and is disposed at a position separated from the outer edge portion of the flange portion 52 toward the center (axial center C1) side. Further, the second stopper 61 is longer in the circumferential direction than the first stopper 55. The second stopper 61 is set such that the amount of protrusion from the rear portion 60 of the flange portion 52 to the rear is substantially equal to or more than the amount of protrusion from the contact surface 58 of the first stopper 55 to the rear. .

  The wiring insertion hole 62 is a portion through which a lead wire 65 (FIG. 6) for supplying electric power and signals from the connection pipe 32 (vacuum cleaner body 12) side to the electric motor 44 and the control unit 45 is inserted. It is formed in a longitudinal shape curved in an arc shape (semi-arc shape) along the circumferential direction of 52. The wiring insertion hole 62 is between the first stopper 55 and the second stopper 61 and on one side in the left-right direction of the stoppers 55 and 61 with respect to the direction around the axis of the fixed tube 38 (circumferential direction). Located on the right side. That is, the wiring insertion hole 62 is located on the opposite side of the second stopper 61 in the left-right direction with respect to the axis C1. Further, the wiring insertion hole 62 is continuously formed in the flange portion 52 from the upper part to the lower part of the fixed tube main body 51. For this reason, the wiring insertion hole 62 extends so that the upper end portion is located above the second stopper 61 and the lower end portion is located below the first stopper 55, and the hypothetical passage between both ends passes through the axis C <b> 1. It intersects with a typical horizontal plane. The length between both ends of the wiring insertion hole 62 is set corresponding to the rotation angle around the axis on the connecting tube 32 side with respect to the case body 31 (fixed tube 38).

  On the other hand, the connecting pipe 32 is a rotating pipe 67 that is a downstream pipe portion that is pivotally supported in a direction around the axis (around the axis C2 that is the central axis) with respect to the downstream side of the fixed pipe 38. The rotary tube 67 is provided with a connection portion 68 that is pivotally supported in a direction intersecting (orthogonal) with respect to the axis C2.

  The rotary pipe 67 constitutes the upstream end (front end) of the connection pipe 32, and integrally includes a rotary pipe main body 71 and a rotary pipe cover 72 that covers the lower portion of the rotary pipe main body 71 (see FIG. 6). The rear end side of the fixed tube main body 51 of the fixed tube 38 is inserted into the rotary tube 67 so that the axes C1 and C2 are substantially aligned with each other.

  The rotary tube main body 71 is integrally formed of a member such as synthetic resin, for example, an annular main body 74, and connection arm portions 75 and 75 as connection protrusions extending rearward from both sides of the main body 74. It has.

  The main body portion 74 has a front end that is an upstream end abutting against the rear portion 60 of the flange portion 52 of the fixed tube 38, and the main body portion 74 is attached to the rear portion 60 of the flange portion 52 in a state where the rotary tube 67 is rotated with respect to the fixed tube 38. It comes to slide along. The main body 74 is located behind the connection opening 37 and above the protrusion 36 and is exposed to the outside of the case main body 35. Furthermore, openings 77 and 78 are opened in the main body 74 at positions symmetrical to each other with respect to the axis C2, for example, at the upper and lower positions in the neutral position. Fixed bodies 79 and 80 for preventing the 38 and the rotary tube 67 from coming off are inserted, respectively. Further, the inner peripheral portion of the main body 74 has a rear end portion, that is, a position behind the openings 77 and 78, as a rotary tube stopper provided with one and the other abutment portions 82a and 82b on both sides. A first stopper portion 82, which is a stopper rib, protrudes in a rib shape. An arcuate (annular) fitting groove 83 is formed along the outer edge at the front end of the main body 74 facing the rear portion 60 of the flange 52. One and other second stopper portions 84 and 85 are formed. Further, a communication hole 86 that penetrates the main body 74 in the axial direction and communicates with the fitting groove 83 is formed in the lower portion of one connecting arm 75 of the main body 74.

  The openings 77 and 78 are opened in a longitudinal shape along the circumferential direction, and penetrate the main body 74 in the radial direction to communicate the outer peripheral portion and the inner peripheral portion of the main body 74. The openings 77 and 78 communicate with the groove 56 so as to face the groove 56.

  The fixed bodies 79 and 80 are integrally formed of a member such as a synthetic resin, for example, are fitted into the openings 77 and 78, and extend into the groove 56. Therefore, these fixed bodies 79 and 80 prevent the rotary tube 67 from coming off in the axial direction relative to the fixed tube 38.

  The first stopper portion 82 is a portion of the outer periphery of the protruding tube portion 54 of the fixed tube 38 that is opposed to the rear side of the contact surface 58, and is located above the axis C2 in the neutral position. It is formed in a semicircular arc shape that extends from one side to the upper side along the periphery and extends to the other side, and one and the other abutment portions 82a and 82b on both sides (both ends) The rotation angle of the rotary tube 67 with respect to the fixed tube 38 is restricted to one side and the other side by contacting the one side 55a and the other side 55b of the one stopper 55.

  The fitting groove portion 83 is a portion into which the second stopper 61 of the fixed tube 38 is inserted and fitted, and wiring from the cleaner body 12 side is inserted. Note that a reinforcing rib 88 may be appropriately provided in the fitting groove portion 83 along the radial direction so as not to interfere with the second stopper 61.

  The second stopper portions 84 and 85 are respectively formed along the radial direction of the main body portion 74 so as to cross the fitting groove portion 83. These second stopper portions 84 and 85 are formed substantially flush with the front end portion of the main body portion 74 and abut one side 61a and the other side 61b of the second stopper 61 inserted in the fitting groove 83. Thus, the rotation angle of the rotary tube 67 with respect to the fixed tube 38 is regulated. In the present embodiment, the second stopper portions 84 and 85 are positioned on opposite sides of the axis C2, and in the neutral position, the second stopper portion 84 is above the axis C2, and the second stopper portion 85 is the axis. Located below C2. Then, the other side 61b of the second stopper 61 and the other second stopper portion 85 are brought into contact with each other with one side 55a of the first stopper 55 and one abutting portion 82a of the first stopper portion 82 in contact with each other. In contact with the other side 55b of the first stopper 55 and the other abutting part 82b of the first stopper part 82, the one side 61a of the second stopper 61 and the one second stopper part 84 are in contact with each other. It comes to touch.

  Therefore, the contact position between one side 55a of the first stopper 55 and one contact part 82a of the first stopper part 82 and the contact position between the other side 61b of the second stopper 61 and the other second stopper part 85. The contact position between the other side 55b of the first stopper 55 and the other contact part 82b of the first stopper part 82 and the contact position between the one side 61a of the second stopper 61 and the one second stopper part 84. In the meantime, the rotary tube 67 (connection tube 32) is rotatable around the shaft centers C1 and C2 (around the shaft center) with respect to the fixed tube 38 (case body 31). In the present embodiment, the rotary tube 67 (connection tube 32) is rotated by a predetermined equal angle (for example, 90 °) from the neutral position to the left and right with respect to the fixed tube 38 (case body 31). (FIG. 1 (a) to FIG. 1 (c)).

  Here, the contact position between one side 55a of the first stopper 55 and one contact portion 82a of the first stopper portion 82 and the contact between the other side 61b of the second stopper 61 and the other second stopper portion 85 are matched. The contact position is opposite to the second imaginary line L2 that is orthogonal to the first imaginary line L1 passing through the first stopper 55 and the axes C1 and C2 and passing through the axes C1 and C2 when viewed from the axial direction. On the side. Similarly, the contact position between the other side 55b of the first stopper 55 and the other contact part 82b of the first stopper part 82 and the contact between the one side 61a of the second stopper 61 and the one second stopper part 84 are similar. The contact position is opposite to the second imaginary line L2 that is orthogonal to the first imaginary line L1 passing through the first stopper 55 and the axes C1 and C2 and passing through the axes C1 and C2 when viewed from the axial direction. On the side.

  The communication hole 86 communicates with the wiring insertion hole 62 of the fixed tube 38 through the fitting groove 83 and allows the wiring to be led out to the cleaner main body 12 side. The communication hole 86 has an arc shape along the circumferential direction of the main body 74. Is formed. The communication hole 86 communicates with the wiring insertion hole 62 when the rotary pipe 67 (connection pipe 32) is rotated around the axes C1 and C2 with respect to the fixed pipe 38 (case body 31). Is supposed to maintain.

  Each connection arm 75 is for connecting the rotary tube main body 71 and the rotary tube cover 72, and for pivotally supporting the connection portion 68, inside the lower part facing the rotary tube cover 72, A semicircular cutout 91 is formed in each case. Further, a rotation notch 92 for rotating the connection portion 68 is defined between the connection arm portions 75 and 75 and the main body portion 74.

  The rotary tube cover 72 is for pivotally supporting the connection portion 68 together with the rotary tube main body 71, and is integrally formed of a member such as a synthetic resin, for example, and is fixed to the rotary tube main body 71 by a fixing member 94 such as a screw. (FIG. 7) is integrally attached to cover the lower part between the connecting arm portions 75,75. Further, the rotary tube cover 72 is provided with projecting wall portions 96 and 96 projecting from the connecting arm portions 75 and 75 of the rotary tube main body 71 so as to be spaced apart from each other. These projecting wall portions 96 and 96 are formed with semicircular cutout portions 97 and 97 at the upper portions facing the rotary tube main body 71, respectively. Then, each notch 97, 97 is opposed to the notch 91 of each connecting arm 75 of the rotary tube main body 71 in a state where the rotary tube main body 71 and the rotary tube cover 72 are integrally attached. Each of the circular shaft support portions that pivotally support 68 is configured.

  The connecting portion 68 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 a direction orthogonal to the axial direction of the rotary tube 67 9 (FIG. 9) are pivotally supported by the pivotal support portion of the rotary tube 67, so that the pivotable shafts 99 and 99 (FIG. 9) can be pivoted to the pivotal cutout 92 side and the counterrotation cutout 92 side. Yes. Accordingly, for example, in the neutral position, the connecting portion 68 can be rotated in the vertical direction, and the rotary tube 67 is rotated about the axis (for example, around the axes C1 and C2) by 90 ° with respect to the fixed tube 38 (case body 31) ), The connecting portion 68 can be rotated in the left-right direction. Each rotation shaft 99 is formed in a cylindrical shape, and one of the rotation shafts 99 is inserted into a lead wire 65 electrically connected to the cleaner body 12 side, led out, and communicated. The hole 86 is inserted from behind.

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

  When cleaning, first, the user 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 the hand operating portion 27 on the tip side of the hose body 21 is connected. The extension pipe 22 and the floor brush 23 are sequentially connected to each other.

  Next, when the user who grips the grip portion 28 operates the predetermined setting button 29 as a state where the floor brush 23 is placed on the floor surface 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 back and forth on the floor surface, and thereby sucks dust together with air from the suction port 41 on the front end side of the floor brush 23 by the negative pressure generated by driving the electric blower 18. At this time, the floor brush 23 is operated on the floor surface so that the rotary pipe 67 (connection pipe 32) is, for example, around the axis center (around the axis centers C1 and C2) with respect to the fixed pipe 38 (case body 31). Alternatively, by rotating in a direction intersecting with the axes C1 and C2, the connecting pipe 32 is adjusted according to the angle between the gap where the floor brush 23 is inserted and the standing position of the user and the height of the gap. Accordingly, the extension tube 22 can be appropriately tilted with respect to the case body 31.

  In addition, the user appropriately rotates the rotating brush 43 according to the type of the floor surface. At this time, when the user operates a predetermined setting button 29, the electric motor 44 that is supplied with power from the cleaner body 12 side through the wiring is driven by the control unit 45 according to the operation of the setting button 29, and the rotating brush 43 rotates to assist cleaning such as scraping the dust on the floor and polishing the floor.

  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. At this time, when the rotating brush 43 is operating, the control unit 45 also stops the electric motor 44.

  Further, for example, when cleaning the rotating brush 43 of the floor brush 23, the floor brush 23 is turned upside down and the cover portions 47 and 48 are removed. At this time, as shown in FIG. 8, when the floor brush 23 is placed on a plane such as a floor surface with the floor brush 23 turned upside down, the connection pipe 32 (extension pipe 22) is provided to improve workability. First, turn the connecting pipe 32 (extension pipe 22) to either the left or right around the axis so that it is along the floor surface. Lay it flat and lay it down (FIG. 7), then turn it upside down and place it on the floor. In this state, one side 55a or the other side 55b of the first stopper 55 and one abutment portion 82a or the other abutment portion 82b of the first stopper portion 82 abut, and the other side 61b of the second stopper 61 Or the one side 61a and the 2nd stopper part 85 or the 2nd stopper part 84 contact | abut. Then, when the case body 31 (the case main body 35) is pressed against the floor surface so as to be fixed to the floor surface in order to remove the cover portions 47 and 48, the rotating body 67 is exposed from the case body 31 and is in contact with the floor surface. An external force F (FIG. 2A) in a direction intersecting the axial direction is applied, and the axis C2 of the rotary tube 67 is inclined with respect to the axis C1 of the fixed tube 38. In this operation, for example, as shown in FIG. 1B, the second stopper 61 is separated from the second stopper portion 84 in the axial direction in a state where the rotary pipe 67 is rotated with respect to the fixed pipe 38, and tries to get over. On the other hand, the first stopper 55 approaches the one abutting portion 82a of the first stopper portion 82 in the axial direction, and the abutting becomes larger. Therefore, the contact between the one side 55a of the first stopper 55 and the one contact portion 82a of the first stopper portion 82 is maintained, and the rotary tube 67 (connection tube 32) is fixed to the fixed tube 38 (case body 31). Is reliably prevented from rotating. Further, when an external force F is applied in the opposite direction (FIG. 2B), the same effect is obtained, and the first stopper 55 is separated from the one abutment portion 82a of the first stopper portion 82 in the axial direction and gets over. On the other hand, since the second stopper 61 moves closer to the second stopper portion 84 in the axial direction and comes into contact with the second stopper portion 84, the first stopper 61 and the one side 61a of the second stopper 61 2 The contact with the stopper portion 85 or the second stopper portion 84 is maintained, and the rotating tube 67 (connection tube 32) is reliably prevented from rotating with respect to the fixed tube 38 (case body 31). In this operation, even when the rotary tube 67 is rotated with respect to the fixed tube 38 as shown in FIG. 1 (c), one side 55a of the first stopper 55 during the above operation is replaced with the other side 55b. 2 One side 61a of the stopper 61 is replaced with the other side 61b, one contact portion 82a of the first stopper portion 82 is replaced with the other contact portion 82b, and the second stopper portion 84 is replaced with the second stopper portion 85. It has the same effect.

  That is, in the embodiment described above, the rotary tube 67 is rotated at one side and the other side in the direction around the axis with respect to the fixed tube 38, and at the side of the first stopper 55. The contact position of one side 55a and the other side 55b with one and the other contact portions 82a and 82b of the first stopper portion 82, the other side 61b and the one side 61a which are the side portions of the second stopper 61, and the other Further, the contact position with one of the second stopper portions 85 and 84 is perpendicular to the first imaginary line L1 passing through the first stopper 55 and the shaft centers C1 and C2 when viewed from the axial direction, and the shaft centers C1 and C2. Are located opposite to each other with respect to the second imaginary line L2. Therefore, the rotary tube 67 is relatively positioned with respect to the fixed tube 38 so that the first stopper 55 or the second stopper 61 gets over the contact portions 82a and 82b of the first stopper portion 82 or the second stopper portions 84 and 85. When tilted, the contact between the second stopper 61 or the first stopper 55 and the contact portions 82a and 82b of the second stopper portions 84 and 85 or the first stopper portion 82 becomes larger, so the first stopper 55 and the second stopper The stopper 61 does not get over the contact portions 82a and 82b of the first stopper portion 82 and the second stopper portions 84 and 85 at the same time, and the rotating tube 67 of the connection tube 32 is more reliably secured to the fixed tube 38 of the case body 31. Can be prevented from rotating around the axis.

  In particular, in the case of the floor brush 23 including the electric motor 44 for driving the rotary brush 43, the lead wire 65 for power supply or signal from the cleaner body 12 side is wired to the communication hole 86 of the rotary pipe 67 and the fixed pipe 38. Since it is arranged through the insertion hole 62 and the like, the rotation pipe 67 is reliably prevented from rotating with respect to the fixed pipe 38, so that the communication between the communication hole 86 and the wiring insertion hole 62 is reliably maintained and the lead wire 65 is damaged. There is nothing.

  And, by providing this floor brush 23, the operability of the floor brush 23 using the hand operation section 27 is good, and disconnection or the like does not occur due to the rotation operation of the connecting pipe 32 (extension pipe 22). Sex vacuum cleaner 11 can be provided.

  In the above embodiment, the first stopper 55 and the first stopper portion 82 are provided opposite to the fixed tube 38 and the rotary tube 67, and the second stopper 61 and the second stopper portions 84 and 85 are fixed to the fixed tube. As long as 38 and the rotary tube 67 are provided opposite to each other, either the fixed tube 38 or the rotary tube 67 may be provided. That is, the first stopper 55 and the second stopper 61 may be provided on the rotary tube 67, and the first stopper portion 82 and the second stopper portions 84 and 85 may be provided on the fixed tube 38, or the first stopper 55 or the second stopper. 61 may be provided on the fixed tube 38 or the rotary tube 67, and the first stopper portion 82 or the second stopper portions 84 and 85 may be provided on the rotary tube 67 or the fixed tube 38.

  Further, each of the first stopper 55, the second stopper 61, and the first stopper portion 82 is formed as a single projection, but is divided in the direction around the axis, and one side and the other side around the axis. The first stopper portion 82, the second stopper portions 84 and 85, and the portion that abuts the first stopper 55 when they are rotated to each other may be separated from each other. Similarly, although the second stopper portions 84 and 85 are provided separately, they may be continuously integrated.

  Further, the rotation angle around the axis of the rotary tube 67 with respect to the fixed tube 38 can be set to an arbitrary angle of less than 360 ° as necessary.

  Although one embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications 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 Connection pipe
38 Fixed pipe
55 First stopper
61 Second stopper
62 Wiring insertion hole
65 lead wire
67 Rotating tube
82 First stopper
84,85 Second stopper
86 communication holes
C1, C2 shaft center
L1 First imaginary line
L2 Second imaginary line

Claims (2)

A case body provided with a fixed pipe having a communication hole ;
A connection pipe comprising a rotary pipe having a wiring insertion hole communicating with the communication hole and connected to the fixed pipe so as to be rotatable at least in a direction around an axis;
Lead wire for power feeding from the vacuum cleaner main body side inserted through the communication hole and the wiring insertion hole,
A first stopper for detent projecting from either one of the fixed tube and the rotating tube;
Wherein the fixed tube is provided on the other of the rotary tube, the one side and the other side the wire insertion and the passage of the rotation angle of the axial center direction by the contact between the first stopper side A first stopper portion that regulates each within a range that maintains communication with the hole ;
A second stopper for detent projecting on either one of the fixed tube and the rotating tube;
Provided on the other side of the fixed tube and the rotating tube, the rotation angle of one side and the other side in the direction around the axis is determined by contact with the side portion of the second stopper, and the communication hole and the wiring are inserted. A second stopper portion that regulates each within a range that maintains communication with the hole ;
A contact position between the side of the first stopper and the first stopper in a state where the rotary tube is rotated in one side and the other side in the direction around the axis with respect to the fixed tube. And a contact position between the side portion of the second stopper and the second stopper portion is perpendicular to a first imaginary line passing through the first stopper and the shaft center when viewed from the axial direction, and the shaft center is The suction inlet body of the vacuum cleaner characterized by being located in the mutually opposite side with respect to the 2nd virtual line which passes. A vacuum cleaner body equipped with an electric blower;
A vacuum cleaner comprising: a suction port body according to claim 1, wherein a connection pipe communicates with a suction side of the electric blower.

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