JP6404642B2 - Vacuum cleaner and its suction port - Google Patents

Description

  The embodiment of the present invention includes a first rotating tube attached to an air passage body fixed to the case body so as to be rotatable about an axis, and the first rotating tube with respect to the first rotating tube. The present invention relates to a suction port body of a vacuum cleaner having a second rotary tube that is rotatably attached along a direction intersecting the axial direction of the tube, and a vacuum cleaner including the same.

  Conventionally, a floor brush as a suction port used by connecting to an extension pipe of a vacuum cleaner or a vacuum cleaner body extends in the left-right direction, that is, a horizontally long case body and an axis with respect to the rear portion of the case body, etc. And a connecting pipe connected rotatably. In the case body, a suction port communicating with the connection pipe is opened on the lower surface facing the floor surface as the surface to be cleaned, and the connection pipe is connected to the rear portion of the suction chamber communicating with the suction port. The cylindrical air passage body is fixed. The connecting pipe is rotated along a direction intersecting (orthogonal) with the first rotating pipe (fixed pipe) attached to the air passage body so as to be rotatable about the axis. A second rotary tube having a moving shaft and pivotally supported by the first rotary tube is provided.

  That is, a floor brush has a connection part with a connection pipe which does not have a suction inlet in the rear part of a case body. Since this connecting portion does not contribute to dust suction, it is required to be as narrow as possible.

  However, in order to narrow the connecting portion, the air passage body must be shortened back and forth, and sufficient space for firmly fixing the air passage body to the case body cannot be secured. For this reason, for example, it is not easy to sufficiently receive a load generated when, for example, the second rotating tube of the connecting tube is rotated with respect to the first rotating tube.

  Therefore, the structure which receives effectively the load which arises by rotation of a 2nd rotary tube is desired, reducing a floor brush in size.

JP 2014-137 A

  The problem to be solved by the present invention is a vacuum cleaner that can effectively receive a load caused by the rotation of the second rotary tube relative to the first rotary tube while shortening the connecting portion between the case body and the connection tube. It is providing the suction inlet body of this and a vacuum cleaner provided with the same.

The suction port body of the vacuum cleaner of the embodiment includes a case body, an air passage body, a first rotary tube, and a second rotary tube. The case body includes a suction port. The air passage body communicates with the suction port and is provided in the case body. The first rotary tube is prevented from coming off in the axial direction with respect to the air passage body, and is attached so as to be rotatable around the axis and communicates with the air passage body. The second rotating tube is attached to the first rotating tube so as to be rotatable along a direction intersecting the axial direction of the first rotating tube, and communicates with the first rotating tube. Furthermore, the case body includes a lower case and an upper case. The lower case supports the first rotary tube and the air passage body from below. The upper case is attached to the lower case from above and sandwiches the first rotary tube and the air passage body with the lower case. And the protrusion which protrudes along the longitudinal direction of a case body is provided above and below any one of a 1st rotary tube, a lower case, and an upper case, and this protrusion fits slidably to the other. A groove is provided.

It is a perspective sectional view showing the suction mouth of the vacuum cleaner of one embodiment. (a) is a perspective view showing a part of the lower case of the case body of the same suction port body, (b) is a perspective view showing a part of the upper case of the case body. (a) is a perspective view showing from above side portions of the connecting pipe of the same suction port body, (b) is a perspective view showing a part of the same connecting pipe from the bottom side. It is a top view which shows a part of suction port body same as the above. It is a top view which shows typically the state which rotates the 1st rotary tube of a connection pipe of a suction inlet body same as the above, and rotates the 2nd rotary tube and cleans it. 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. 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 body 12 is capable of turning and running on the floor as the surface to be cleaned, the electric blower 15, a main body control unit (not shown) that controls the operation of the electric blower 15, and the electric blower 15 and the main body control. The power supply unit such as a cord reel device for supplying power to the unit or the like or a secondary battery is accommodated, and a dust collecting unit 18 communicating with the suction side of the electric blower 15 is provided. A main body suction port 19 that communicates with the dust collection unit 18 and is connected to the proximal end side of the tube unit 13 is formed in the front portion of the cleaner body 12. In the present embodiment, for example, a cyclone separation type dust collection unit is used as the dust collection unit 18, but an arbitrary dust collection unit such as a paper pack or a filter may be used.

  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 24 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. In addition, 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. The grip part 28 has a setting button for setting the operation mode of the electric blower 15 and the like. 29 is arranged.

  As shown in FIGS. 1 to 4, the floor brush 24 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 direction, width direction) are based on the traveling direction of the floor brush 24, and the up-down direction is the antigravity direction when the floor brush 24 is placed on a flat floor surface. And the direction of gravity. The floor brush 24 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 that it can be attached to and detached from the distal end side (upstream side) of the extension tube 22. And a connecting pipe 32 to be connected.

  The case body 31 is divided into a plurality of case bodies formed of, for example, a synthetic resin. In the present embodiment, for example, a lower case 35 that constitutes a lower part of the lower part and the rear part, and an upper part of the lower case 35 are provided. An upper case 36 that covers the upper part of the upper part and the rear part, a plate-like front cover 37 that is pivotally supported at the front end of the upper case 36 so as to be rotatable, and that constitutes the front part. A buffer bumper 38 is provided between the case 36 and both sides of the front part from both sides. Further, the case body 31 includes a suction chamber 41 that is positioned at the front and extends in the longitudinal direction to the left and right, a motor chamber 42 adjacent to the rear side of the suction chamber 41, and the suction chamber 41 and the motor chamber 42. A drive chamber 43 adjacent to one side of the suction chamber 41 and a control chamber 44 adjacent to the other side of the suction chamber 41 are partitioned.

  A suction port 46 that opens the lower part and the front part of the suction chamber 41 is cut out at the front end of the lower case 35. Further, a projecting portion 47 to which the front end portion of the connecting pipe 32 is attached projects rearward from the rear portion of the lower case 35. The projecting portion 47 is provided with a support portion 51 that supports the connection pipe 32 from below, and a lower receiving portion 52 that is positioned in front of the support portion 51, and the support portion 51 and the lower receiving portion are provided. A lower groove portion 53 that is a (one) groove portion is formed between the first groove 52 and the second groove 52.

  As shown in FIG. 2 (a), the support portion 51 constitutes a front end portion of the support portion 51 and extends in a rib shape along the left-right direction. Side portions 56, 56 extending in a rib shape from both sides of the portion 55 to the rear, and a rear surface portion extending in a rib shape along the left-right direction substantially parallel to the front surface portion 55 from the rear end portion of the side portions 56, 56 57, 57, and a rear surface of the front surface portion 55, ie, a rear surface (opposite to the lower receiving portion 52), which is continuous in a rib shape and reinforces the front surface portion 55 in the front-rear direction. The reinforcing portion 58 is integrally provided.

  A semicircular support cutout portion 55a into which the connection pipe 32 (FIG. 1) is fitted is formed in the upper portion of the front surface portion 55.

  The rear surface portions 57 and 57 each have an upper end curved in an arc shape along the shape of the support cutout portion 55a.

  In the present embodiment, for example, a pair of reinforcing portions 58 are provided, are separated from each other in the left-right direction, and extend along the front-rear direction, that is, along the direction intersecting (orthogonal) with the front surface portion 55.

  The lower receiving portion 52 is spaced forward of the front surface portion 55 of the support portion 51 and extends in a rib shape along the left-right direction substantially parallel to the front surface portion 55, and a lower facing surface portion 61 as a (other) lower support surface portion. The lower facing surface portion 61 extends in the form of a rib from both sides of the lower facing surface portion 61 to the front side, that is, the opposite side of the supporting portion 51 (front surface portion 55), and reinforces the lower facing surface portion 61 in the front-rear direction (other). The receiving side surface portions 62, 62 and the back surface of the lower facing surface portion 61, that is, the front surface (on the side opposite to the support portion 51 (front surface portion 55)) are continuously ribbed to reinforce the lower facing surface portion 61 in the front-rear direction. ) A plurality of lower reinforcing rib portions 63 which are lower supporting surface portion reinforcing portions are integrally provided.

  The lower facing surface portion 61 has an upper end curved in an arc shape along the shape of the support cutout portion 55a. Further, the lower facing surface portion 61 is located between the reinforcing portions 58 and 58 of the support portion 51, and is set to have a length substantially equal to the distance between the reinforcing portions 58 and 58. That is, the lower facing surface portion 61 faces the front surface portion 55 of the support portion 51 at a position between the reinforcing portions 58 and 58.

  The receiving portion side surfaces 62, 62 extend along the front-rear direction, that is, along the direction intersecting (orthogonal) with respect to the lower facing surface portion 61.

  In the present embodiment, for example, a pair of lower reinforcing ribs 63 are provided, and are spaced apart from each other in the left-right direction and are also spaced from the receiving side surface parts 62, 62. It extends along a direction intersecting (orthogonal) with respect to the surface portion 61.

  The lower groove portion 53 is formed in a longitudinal shape along the left-right direction between the front surface portion 55 of the support portion 51 and the lower facing surface portion 61 of the lower receiving portion 52, and a part of the connecting pipe 32 is fitted into the lower groove portion 53. The load (reaction force) from the connection pipe 32 is received at the positions of the front surface portion 55 and the lower facing surface portion 61.

  Further, as shown in FIGS. 1 and 2 (b), the upper case 36 in this embodiment includes, for example, a front upper case 36a that is a first upper case body that constitutes the upper portion of the suction chamber 41, and a motor. And a rear upper case 36b which is a second upper case body constituting the upper part of the chamber 42, the drive chamber 43 and the control chamber 44. Further, in the upper case 36, a wall portion 65 that is a (one) upper support surface portion extending along the left-right direction protrudes downward, and is located behind the wall portion 65, An upper receiving portion 66 protrudes downward, and an upper groove portion 67 that is a (other) groove portion is formed between the wall portion 65 and the upper receiving portion 66.

  The wall portion 65 is formed, for example, along the front edge portion of the rear upper case 36b, and is opposed to the rear end portion of the front upper case 36a. At the lower end portion of the wall portion 65, a receiving plate portion 69, which is a (one) upper support surface portion reinforcement portion, projects in a substantially horizontal shape, that is, along the direction intersecting (orthogonal) with the wall portion 65. The rear end portion of the front upper case 36a is placed on the upper portion of the receiving plate portion 69. That is, the wall portion 65 and the receiving plate portion 69 are bent in an L shape when viewed in a cross section by a vertical plane along the front-rear direction, and the wall portion 65 is reinforced in the front-rear direction by the receiving plate portion 69. .

  The upper receiving portion 66 is spaced apart from the rear of the wall portion 65 and extends in a rib shape along the left-right direction substantially parallel to the wall portion 65, and an upper facing surface portion 71 as a (other) lower supporting surface portion. A plurality of upper reinforcing ribs 72 which are (other) lower supporting surface portion reinforcing portions which are continuous with ribs on the back surface of the surface portion 71, i.e., the rear surface (opposite to the wall portion 65) and reinforce the upper facing surface portion 71 in the front-rear direction. Is integrated.

  The upper facing surface portion 71 is located in front of the lower groove portion 53 of the lower case 35 and the lower facing surface portion 61 of the lower receiving portion 52.

  In the present embodiment, for example, three upper reinforcing ribs 72 are provided and are spaced apart from each other at substantially equal intervals in the left-right direction, and intersect (orthogonal) along the front-rear direction, that is, with respect to the upper facing surface portion 71. It extends along.

  The upper groove portion 67 is formed in a longitudinal shape along the left-right direction between the wall portion 65 and the upper facing surface portion 71 of the upper receiving portion 66, and a part of the connection tube 32 is fitted into the connection tube 32. Load (reaction force) is received at the positions of the wall portion 65 and the upper facing surface portion 71.

  Further, as shown in FIGS. 1 to 4, the suction chamber 41 includes a rear part and an upper part by a partition part 75 and an upper case 36 (front upper case 36a) rising upward from the rear part of the suction port 46 in the lower case 35. The front part and the lower part are opened by the suction port 46, and the front part is partitioned by the front cover 37. In the suction chamber 41, a rotary brush 76 is rotatably disposed as a rotary cleaning body that scrapes off dust that has entered the floor surface such as a carpet.

  The motor chamber 42 is located on one side of the connecting pipe 32 (projecting portion 47), and is divided into an upper case 36 (rear upper case 36b) and a lower case 35 in the up / down / left / right and front / rear directions. Further, the motor chamber 42 is adjacent to the suction chamber 41 through the partition wall 75 at the front. Further, a motor 77 for generating a driving force for rotating the rotary brush 76 is accommodated in the motor chamber 42.

  The drive chamber 43 is formed in a longitudinal shape along the front-rear direction. One end side of the rotating brush 76 and the rotating shaft of the motor 77 are inserted into the driving chamber 43, respectively. The drive chamber 43 stores transmission means 78 for connecting one end side of the rotating brush 76 and the rotating shaft of the motor 77 to transmit the driving force (rotating force) of the motor 77 to the rotating brush 76. Yes. The transmission means 78 is constituted by, for example, a gear, a belt, or the like, and rotates the rotating brush 76 as the motor 77 rotates.

  The control chamber 44 is located on the other side of the connecting pipe 32 (projection 47), and is divided into an upper case 36 (rear upper case 36b) and a lower case 35 in the vertical and horizontal directions and the front and rear. That is, the control chamber 44 is located on the side opposite to the motor chamber 42 with respect to the connection pipe 32. Further, the front portion of the control chamber 44 is adjacent to the suction chamber 41 through the partition wall portion 75. Further, in the control chamber 44, motor control means 79 for controlling the driving of the motor 77 and ground detection means (not shown) for detecting the ground contact with the floor surface of the floor brush 24 are housed. .

  The motor control means 79 is supplied with power from the power supply unit of the cleaner body 12 (FIG. 6) via the tube part 13 (FIG. 6). Furthermore, lead wires (not shown) are electrically connected to the motor control means 79, and these lead wires are electrically connected to the motor 77 through the protrusion 47 at the bottom of the connection pipe 32, and Setting button 29 (FIG. 6) and motor chamber 42 side through the inside of the connecting pipe 32 (outside the air passage in the connecting pipe 32) and the inside of the extension pipe 22 (outside the air passage in the extension pipe 22 (FIG. 6)) (Motor 77) is electrically connected. The motor control means 79 turns the motor 77 on and off according to the setting by operating the setting button 29 (FIG. 6) of the hand operating section 27, and the floor brush 24 is grounded to the floor surface by the ground detection means. When it is detected that it is not (separated from the floor surface), the motor 77 is controlled to stop.

  On the other hand, the connection pipe 32 is a cylindrical first rotary pipe 81 that is pivotally supported with respect to the case body 31 in the direction around the axis (direction around the axis), and the front end side of the first rotary pipe 81. A cylindrical second rotary tube 82 is rotatably supported on the upstream side, and the rear end side (downstream side) is detachably connected to the tip of the extension tube 22 (FIG. 6). ing. The first rotary tube 81 is fixed to the case body 31 so as to communicate with the suction chamber 41 (suction port 46) via a separate air passage body 83.

  The first rotating tube 81 sets an angle of inclination of the second rotating tube 82 (extension tube 22 (FIG. 6)) in the left-right direction. The first rotating tube 81 is fitted to the support portion 51 of the protruding portion 47 from above and is axially Are arranged so as to be horizontal along the front-rear direction, and the front end side (upstream side) is covered from above by the upper case 36 (rear upper case 36b). That is, the front end side of the first rotary tube 81 is sandwiched between the lower case 35 and the upper case 36 from above and below. In addition, a notch opening 85 that is opened along the direction intersecting the axial direction and fitted with the second rotating tube 82 is formed in the rear end portion that is the downstream side of the first rotating tube 81, Both sides of the notch opening 85 serve as shaft support portions 86 and 86 for rotatably supporting the second rotary tube 82. Further, on the outer peripheral surface of the first rotary tube 81, a lower projection 87 (FIG. 3 (b)) which is a (one) projection fitted into the lower groove portion 53 and an upper groove portion 67 are fitted (others). ) And upper protrusions 88 (FIG. 3A), which are protrusions, are provided along the radial direction. The first rotary tube 81 is divided into a plurality of first rotary tube bodies. In this embodiment, for example, a pair (up and down) is formed by a plane that includes the central axis and does not intersect with the lower protrusion 87 and the upper protrusion 88. The first rotary tube main body is divided.

  The notch opening 85 is in a normal use state in which the floor brush 24 (case body 31) is grounded to the floor surface and the extension pipe 22 (FIG. 6) stands up with respect to the case body 31 (state shown in FIG. 6). In other words, the connecting tube 32 (first rotating tube 81) is positioned above the first rotating tube 81 in a state where the connecting tube 32 (first rotating tube 81) is not rotated with respect to the case body 31 (hereinafter referred to as a reference position).

  The lower protrusion 87 is located below the first rotating tube 81 at the reference position. The lower protrusion 87 is formed to extend in a rib shape in the left-right direction along the circumferential direction of the first rotary tube 81. The lower protrusion 87 comes into sliding contact with the lower groove portion 53 as the first rotary tube 81 rotates with respect to the case body 31.

  The upper projection 88 is positioned at the upper end of the first rotary tube 81 and in front of the lower projection 87 at the reference position, and is disposed at the front end of the first rotary tube 81. That is, the upper protrusion 88 is provided at a position spaced forward from the notch opening 85 and at a position opposite to the lower protrusion 87 with respect to the central axis of the first rotary tube 81. The upper protrusion 88 is formed to extend in a rib shape in the left-right direction along the circumferential direction of the first rotary tube 81. The upper protrusion 88 comes into sliding contact with the upper groove portion 67 as the first rotary tube 81 rotates with respect to the case body 31.

  The second rotary tube 82 is connected substantially coaxially to the extension tube 22 and sets the tilt angle of the extension tube 22 (FIG. 6) in the front-rear direction. The second rotary tube 82 is fitted inside the first rotary tube 81. The sliding portion 91 slidably in contact with the inner surface of the first rotating tube 81 and the elongated cylindrical shape projecting from the sliding portion 91 to the rear of the first rotating tube 81 (see FIG. 6) and a second rotary tube main body 92 detachably connected to each other. The sliding portion 91 is pivotally supported by shaft support portions 86 and 86 along a direction intersecting (orthogonal) with the axial direction of the first rotary tube 81 inside the first rotary tube 81. The two-turn tube main body 92 is fitted in the notch opening 85. Therefore, the second rotary tube 82 is hermetically connected to the first rotary tube 81 and is rotatable in a direction intersecting (orthogonal) with the axial direction of the first rotary tube 81. .

  The air passage body 83 is formed in a substantially cylindrical shape that expands to the front end side (upstream side) by, for example, a synthetic resin, and the front end is a notch portion formed in the center in the left-right direction of the partition wall portion 75 of the lower case 35. Between 95 and the upper case 36 (rear upper case 36b), it is sandwiched up and down and faces the suction chamber 41, and is airtightly connected to the suction chamber 41 (suction port 46). That is, the air passage body 83 is sandwiched and fixed between the lower case 35 and the upper case 36 (rear upper case 36b). Further, the rear end portion on the downstream side of the air passage body 83 is inserted into the first rotary tube 81, and a step portion 96 that protrudes in a rib shape from the first rotary tube 81 toward the central axis side. It is in close contact with the front surface. The air passage body 83 is prevented from coming off in the axial direction with respect to the first rotary tube 81 and is airtightly connected to the first rotary tube 81.

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

  When assembling the floor brush 24, first, the rotary brush 76, the motor 77, the transmission means 78, the motor control means 79, etc. are assembled to the lower case 35, and the second rotary pipe 82 is pivotally supported in advance. The first rotary tube 81 of the pipe 32 is prevented from coming off in the axial direction with respect to the air passage body 83, the front end portion of the air passage body 83 is fitted into the notch portion 95 of the partition wall portion 75, and the first rotary tube 81 is placed on the support portion 51, and the lower side is fitted into the support cutout portion 55a. In this state, the lower protrusion 87 of the first rotary tube 81 is inserted into the lower groove 53 of the protrusion 47.

  Next, the upper case 36 (rear upper case 36b) is attached from above the lower case 35 and fixed to the lower case 35 by screws or the like. At this time, the upper case 36 (rear upper case 36b) covers the air passage body 83 and the front end portion of the first rotary tube 81 and is sandwiched between the lower case 35 and the upper portion of the first rotary tube 81. The protrusion 88 is inserted into the upper groove portion 67.

  Further, bumpers 38 are attached to both sides of the front part on the lower case 35, and an upper case 36 (front upper case 36a) with a front cover 37 attached in advance is attached to the lower case 35 from above. By fixing to the floor brush 24, the floor brush 24 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 24 are sequentially connected to the section 27. Therefore, the connecting pipe 32 (suction chamber 41 (suction port 46)) of the floor brush 24 communicates with the suction side of the electric blower 15.

  Next, the floor brush 24 is placed on the floor surface, and when the user who grips the grip portion 28 operates the predetermined setting button 29 as a state in which power can be supplied from the power source portion to the main body control portion and the electric blower 15, The main body control unit controls the input of the electric blower 15 according to the operation mode set by the setting button 29, and the electric blower 15 is driven.

  Furthermore, the user causes the floor brush 24 to run back and forth on the floor surface, and thereby sucks dust together with air from the suction port 46 on the front end side of the floor brush 24 by the action of negative pressure generated by driving the electric blower 15. . At this time, according to the angle between the gap for inserting the floor brush 24 and the standing position of the user and the height of the gap, the user operates the extension pipe 22 with the grip portion 28 of the hand operation portion 27. By rotating the first rotary pipe 81 and the second rotary pipe 82, the floor brush 24 is inserted into a gap or the like while changing the angle with respect to the extension pipe 22 while maintaining the ground contact with the floor surface.

  Here, for example, when the extension tube 22 is tilted forward from the reference position, the second rotary tube 82 connected to the extension tube 22 in a straight line (coaxially) with respect to the first rotary tube 81. And turn to the inside (front) of the notch opening 85. Accordingly, the front end side (upstream side) of the first rotary tube 81 is rotated downward relative to the rotary shaft of the second rotary tube 82, and the rear end side (downstream side) thereof is rotated upward. A load is applied to. At this time, the lower protrusion 87 fitted in the lower groove portion 53 abuts on the front surface portion 55 of the support portion 51 opposed to the rear, and the upper protrusion 88 fitted in the upper groove portion 67 faces the front. The first rotary tube 81 is held by receiving a load by contacting the wall portion 65. Similarly, when the extension pipe 22 is tilted backward from the reference position, the second rotary pipe 82 connected in a straight line (coaxially) with the extension pipe 22 is connected to the first rotary pipe 81. It rotates to the outside (rear) of the notch opening 85. Accordingly, the front end side (upstream side) of the first rotary tube 81 is relatively rotated upward and the rear end side (downstream side) of the second rotary tube 82 is rotated downward. A load is applied to. At this time, the lower protrusion 87 fitted in the lower groove portion 53 abuts on the lower facing surface portion 61 of the lower receiving portion 52 facing forward, and the upper protrusion 88 fitted in the upper groove portion 67 moves rearward. The first rotary tube 81 is held by receiving a load by coming into contact with the opposed upper facing surface portion 71.

  Further, the user appropriately rotates the rotating brush 76 according to the type of the floor surface. At this time, when the user operates a predetermined setting button 29, in response to the operation of the setting button 29, the motor 77 powered by the vacuum cleaner main body 12 through the wiring is driven by the motor control means 79. The rotating brush 76 is rotated at high speed via the transmission means 78 connected to the motor 77, and assists cleaning such as scraping out dust on the floor surface or polishing the floor surface.

  Then, the air sucked into the suction chamber 41 of the floor brush 24 becomes a suction wind, and carries dust from the main body suction port 19 to the dust collecting unit 18 via the extension pipe 22 and the hose body 21, and this dust collecting unit 18 To collect dust.

  Thereafter, the suction air from which the dust has been removed is sucked into the electric blower 15, passes through the electric blower 15 and becomes exhaust air, and the vacuum cleaner main body from an exhaust port (not shown) provided at the rear of the vacuum cleaner main body 12 or the like. 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 15 by operating the setting button 29. At this time, when the rotating brush 76 is operating, the motor control means 79 also stops the motor 77.

  In the embodiment described above, the first rotary tube 81 and any one of the lower case 35 and the upper case 36 that sandwich the first rotary tube 81 and the air passage body 83 from above and below, in this embodiment, the first rotation The pipe 81 is provided with a lower protrusion 87 and an upper protrusion 88 that project along a direction intersecting the axial direction of the first rotary pipe 81, and the other of the first rotary pipe 81, the lower case 35, and the upper case 36, In the present embodiment, the lower case 35 and the upper case 36 are provided with a lower groove portion 53 and an upper groove portion 67 in which the lower protrusion 87 and the upper protrusion 88 are slidably fitted. Therefore, the air passage body 83 is shortened in the front-rear direction (axial direction) to shorten the connection portion between the case body 31 and the connecting pipe 32 in the front-rear direction, and the air passage body 83 is firmly attached to the lower case 35 and the upper case 36. Even when a sufficient space is not secured, the load generated when the second rotary tube 82 is rotated with respect to the first rotary tube 81 at the reference position, for example, is reduced with the lower projection 87 and the upper projection 88. It can be effectively received by contact with the lower groove 53 and the upper groove 67.

  Since the connecting portion between the case body 31 and the connection pipe 32 can be shortened in the front-rear direction, the ratio of the area of the suction port 46 to the area of the lower surface facing the floor surface of the case body 31 can be relatively increased. . Therefore, for example, the first rotating tube 81 is arranged so that the second rotating tube 82 extends in the left-right direction which is the longitudinal direction of the case body 31 in a state where the first rotating tube 81 is rotated about 90 ° around the axis from the reference position. When the floor brush 24 is inserted into a relatively narrow gap G to clean the floor surface (FIG. 5), the connection portion is less likely to get in the way of the gap G. Since it can be moved widely within the gap G, the trouble of re-inserting the floor brush 24 into the gap G by reversing the angle of the connecting pipe 32 (extension pipe 22) can be suppressed and cleaning can be performed more efficiently.

  Further, by forming the lower protrusion 87 and the upper protrusion 88 in the shape of ribs, the lower protrusion 87 and the upper protrusion 88 become the front portion 55 and the second protrusion when the second rotating tube 82 is rotated with respect to the first rotating tube 81. Since the wall portion 65 or the lower facing surface portion 61 and the upper facing surface portion 71 are in contact with each other in a planar shape, a larger load can be received.

  Further, on the front surface portion 55 of the support portion 51 constituting the lower groove portion 53 and the lower facing surface portion 61 of the lower receiving portion 52, and on the wall portion 65 constituting the upper groove portion 67 and the upper facing surface portion 71 of the upper receiving portion 66, respectively. Since the reinforcing portion 58, the receiving portion side surface portion 62, the lower reinforcing rib portion 63, the receiving plate portion 69, and the upper reinforcing rib portion 72 are provided and reinforced in the front-rear direction to which a load is applied, the lower groove portion 53 (the front portion 55 and the lower portion) A larger load can be received by the facing surface portion 61) and the upper groove portion 67 (the wall portion 65 and the upper facing surface portion 71).

  Therefore, it is possible to reliably prevent deformation and breakage of the case body 31 and the like due to the load generated by the rotation of the second rotary tube 82 relative to the first rotary tube 81.

  In the above embodiment, the lower groove 53 and the upper groove 67 are provided on the case body 31 side, and the lower protrusion 87 and the upper protrusion 88 are provided on the first rotary tube 81 side. However, the protrusion is provided on the case body 31 side. Even if a groove is provided on the first rotary tube 81 side, the same effect can be obtained.

  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 24 is connected to the lower portion of the vacuum cleaner body 12 which is vertically long can be used. Can be used.

  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
15 Electric blower
24 Floor brush as suction port
31 Case body
35 Lower case
36 Upper case
46 Suction port
53 Lower groove which is a groove
Front part which is 55 face part
56 ribs side
Lower face part which is 61 face part
Lower reinforcement rib part which is 63 ribs
65 wall parts
67 Upper groove that is a groove
71 face part upper part face part
Upper reinforcement rib part which is 72 ribs
81 First rotating tube
82 Second rotating tube
83 Airway body
87 Lower projection that is a projection
88 Upper projection that is a projection

Claims (5)

A case body with a suction port;
An air passage body that communicates with the suction port and is provided in the case body;
A first rotary tube that is secured to the air passage body in the axial direction and is rotatably attached to the air passage body and communicates with the air passage body;
An electric vacuum cleaner comprising a second rotating tube that is attached to the first rotating tube so as to be rotatable along a direction intersecting the axial direction of the first rotating tube and communicates with the first rotating tube. In the suction port body,
The case body is
A lower case for supporting the first rotary tube and the air passage body from below;
An upper case attached to the lower case from above and sandwiching the first rotating tube and the air passage body with the lower case;
A protrusion protruding along the longitudinal direction of the case body is provided above and below one of the first rotating tube and the lower case and the upper case, and the protrusion is slidably fitted to the other. A suction port body for a vacuum cleaner, characterized in that a groove portion is provided. The groove has a surface extending in a direction perpendicular to the axial direction of the first rotary tube at the suction port side in the axial direction of the first rotary tube, wherein in the axial direction of the first rotary tube than said surface portion suction port body of the second and area extending in the direction perpendicular to the axial direction of the rotary tube side hand the first rotary tube, in the vacuum cleaner according to claim 1 wherein characterized in that it is formed in a position sandwiched. A rib is formed along the axial direction of the first rotary tube on the surface portion on the suction port side in the axial direction of the first rotary tube on the lower side, on the side opposite to the formation side of the groove portion. The suction inlet body of the vacuum cleaner of Claim 2 characterized by the above-mentioned. Ribs are formed along the axial direction of the first rotary tube on the side of the second rotary tube in the axial direction of the first rotary tube, on the side opposite to the groove forming side. The suction inlet body of the vacuum cleaner of Claim 2 or 3 characterized by these. A vacuum cleaner body equipped with an electric blower;
The vacuum cleaner comprising the suction port body according to any one of claims 1 to 4, wherein the second rotary pipe communicates with a suction side of the electric blower.

Images