TW201538116A - Vacuum cleaner and suction tool - Google Patents

Abstract

To provide a vacuum cleaner and suction tool for improving operability by reducing the longitudinal width of a suction port case and also improving the suction property of dust from a rear part. A suction tool includes a suction port case having a partition wall for performing division into a suction chamber where a first rotation cleaning body (20) and a second rotation cleaning body (30) are arranged and a storage chamber arranged above the suction chamber so as to store an electromotor and a circuit board. The front end of the electromotor is positioned on the front side of the rear end of the first rotation cleaning body (20). In the storage chamber, the electromotor is arranged at one end in the axial direction of a rotation shaft and the circuit board is arranged at the other end. The second rotation cleaning body (30) is arranged at least from one end to the other end of the suction chamber.

Description

Vacuum cleaner and tip

The present invention relates to a vacuum cleaner and a suction head, and has a structure in which a rotating cleaning body is rotated to sweep dust from the ground and attract.

As a tip of a conventional vacuum cleaner, a rotary cleaning body that can sweep dust from the floor is housed in a casing, a motor that drives the rotary cleaning body, and a control substrate that controls the motor, and a motor is disposed behind the rotary cleaning body. A technique of arranging a control substrate behind the rotating cleaning body and under the motor (for example, refer to Japanese Patent Laid-Open Publication No. Hei.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-245179

However, since the suction head of the vacuum cleaner described in Patent Document 1 is provided with a circuit board behind the rotary cleaning body, the suction port housing (suction) The frame of the head) forms a large extension from the rear of the rotating cleaning body, so that the width of the front and rear of the mouthpiece casing becomes long, and the suction of dust from the back of the tip is impaired.

SUMMARY OF THE INVENTION The present invention has an object of providing a vacuum cleaner and a suction head which can reduce the front and rear wide lifting operability of a mouthpiece housing and can improve the suction property of dust from the rear portion.

A vacuum cleaner and a suction head according to the present invention are characterized in that the vacuum cleaner main body includes an electric blower that generates an attractive force, a dust collecting portion that collects dust and dust, and a suction head that is connected to the cleaner main body, and the suction head includes: a rotating rotating body having a rotating shaft parallel to the cleaning surface; the motor having an output shaft parallel to the rotating shaft, rotating the first rotating cleaning body; controlling the substrate to control the motor; and the second rotating cleaning body disposed in the first a rear side of the rotating cleaning body, having a shaft parallel to the rotating shaft and in contact with the cleaning surface; and the suction port housing having a partition wall partitioning the first rotating cleaning body and the second rotating cleaning body a suction chamber and a storage chamber disposed above the suction chamber and accommodating the motor and the control substrate, wherein a front end portion of the motor is forward of a rear end portion of the first rotary cleaning body, and the storage chamber is at the rotation shaft The motor is disposed on one end side of the axial direction, and the control substrate is disposed on the other end side, and the second rotary cleaning body is Provided from the one end of the suction chamber to the other end.

According to the present invention, there is provided a vacuum cleaner and a suction head which can reduce the front and rear wide lifting operability of the mouthpiece housing and can improve the suction property of the dust from the rear portion.

1‧‧‧ vacuum cleaner

2‧‧‧ Vacuum cleaner body

2a‧‧‧Electric blower

2b‧‧‧Dust collection department

6, 6A, 6B‧‧ ‧ tips

10‧‧‧ suction housing

11c‧‧‧ next door

11d, 11e‧‧‧bend

20‧‧‧1st rotating cleaning body

20s‧‧‧ back end

21‧‧‧ shaft

30‧‧‧2nd rotating cleaning body

30A, 30B‧‧‧2nd rotating cleaning body

30a‧‧‧Axis (axis)

40‧‧‧Electric motor

40a‧‧‧ Output shaft

41s‧‧‧ front end

50‧‧‧Circuit board (control board)

M‧‧‧ Ground (cleaning surface)

Q2‧‧‧Inhalation room

Q1‧‧‧ containment room

Fig. 1 is a perspective view showing the overall appearance of a vacuum cleaner according to a first embodiment of the present invention.

Figure 2 is a top view of the tip.

Figure 3 is a bottom view of the tip.

Fig. 4 is a top view showing a state in which the upper casing of the suction head is removed.

Figure 5 is a wiring diagram inside the tip.

Fig. 6 is a cross-sectional view taken along line A-A of Fig. 2;

Fig. 7 is a cross-sectional view taken along line B-B of Fig. 2;

Fig. 8 is a top view showing the locking mechanism of the bearing cap member, (a) being in a locked state and (b) being in a locked state.

Fig. 9 is a side view showing the flow of dust when the tip is advanced.

Fig. 10 is a side view showing the flow of dust when the tip is advanced.

Fig. 11 is a bottom view showing the flow of dust when the tip is advanced.

Figure 12 is a bottom view of the mode showing other effects obtained by the tip.

Fig. 13 is a schematic view showing the flow of cooling air inside the tip.

Fig. 14 is a bottom view showing the suction head of the vacuum cleaner according to the second embodiment of the present invention.

Fig. 15 is a bottom view showing the suction head of the vacuum cleaner according to the third embodiment of the present invention.

In the following, the embodiments of the present invention are appropriately described, but the present embodiment is not limited to the following, and can be appropriately modified and implemented within the gist of the present invention.

(First embodiment)

As shown in Fig. 1, the cleaner 1 includes a cleaner body 2, a hose portion 3, an operation tube 4 provided with a hand operation switch SW, and the like, and an extension tube 5 and a suction head 6 which are provided to be freely expandable and contractible.

The cleaner main body 2 is provided with the electric blower 2a which generate|occur|produces an attraction, and the dust-collecting part 2b etc. which accommodates the dust after dust collection by the attraction of the electric blower 2a. Further, in the present embodiment, the cyclone type vacuum cleaner 1 is described as an example, but a so-called paper bag type vacuum cleaner may be used.

One end of the hose portion 3 is connected to the connection port 2c of the cleaner body 2 so as to communicate with the dust collecting portion 2b of the cleaner body 2. Further, the other end of the hose portion 3 is connected to one end of the operation tube 4.

The operation tube 4 is provided with a grip 4a having a hand operation switch SW and the like, and a power supply for connecting the extension tube 5 from the cleaner body 2 Power supply terminals, etc. A power supply terminal (not shown) provided at one end of the extension pipe 5 is connected to the power supply terminal.

By the operation of the operation switch 4 at the hand of the operation pipe 4, the strength of the operation of the electric blower 2a can be switched or the cutting of the first rotary cleaning body 20 (see FIG. 3) provided in the suction head 6 can be performed.

The extension tube 5 includes an outer tube 5a and an inner tube 5b, and one end portion of the inner tube 5b is inserted into the other end portion of the outer tube 5a, and is connected to an air passage (not shown) provided inside the outer tube 5a and the inner tube 5b. Freely expand and contract. Further, Fig. 1 is a view showing a state in which the extension tube 5 is the shortest.

Figure 2 is a top view of the tip.

As shown in FIG. 2, the tip 6 has a mouthpiece housing 10 having a substantially T-shape in the upper direction and a mouthpiece joint 13 connected to the mouthpiece housing 10.

In the upper direction display, the mouthpiece housing 10 is provided with a slim mouthpiece body 11 formed in the left-right direction (width direction, the axial direction of the rotation shaft of the first rotary cleaning element 20 to be described later), and a central portion in the longitudinal direction of the mouthpiece body 11 and The joint portion 12 to which the mouthpiece joint 13 is coupled. A flow path R that communicates with the mouthpiece body 13 and the mouthpiece joint 13 is formed in the joint portion 12 (see FIG. 3).

The mouthpiece main body 11 is provided with a buffer portion 11a from the front end surface to the left and right side surfaces. The cushioning portion 11a is formed of an elastic material such as rubber or an elastomer, and ensures airtightness in the mouthpiece body 11 during use, and has a collision between the mouthpiece body 11 and the furniture when the cleaner 1 (see Fig. 1) is used. The action of the cushioning material that can absorb the damage of the furniture or the like and the impact on the mouthpiece body 11 can be absorbed.

The mouthpiece joint 13 includes a first connecting portion 14 that is rotatably coupled to the connecting portion 12 and a second connecting portion 15 that is rotatably coupled to the first connecting portion 14 .

The first connecting portion 14 is formed in a substantially half-track type puller shape in the upper direction of the second drawing, and has a cylindrical shaft 14a coupled to the connecting portion 12. The axial direction of the shaft 14a is the longitudinal direction of the mouthpiece body 11, and both ends of the shaft 14a are supported by the bearing portions 12g and 12g formed in the coupling portion 12 (see Fig. 4). Further, the first connecting portion 14 is configured to be rotatable from a substantially parallel state to a substantially vertical state (in the vertical direction) with respect to the floor (cleaning surface) M (see FIG. 6). In other words, the first connecting portion 14 is rotated about the shaft 14a with respect to the mouthpiece housing 10, so that the extension tube 5 can be rotated between a state substantially parallel to the floor surface M (see FIG. 6) and a substantially vertical state.

The second connecting portion 15 is configured to be rotatable with respect to the first connecting portion 14 in the longitudinal direction of the nozzle body 11 (clockwise direction and counterclockwise direction of the second sheet surface). Thereby, for example, the extension pipe 5 can be tilted in a state substantially perpendicular to the floor surface M toward the extension pipe 5 in a state substantially parallel to the floor surface M.

Further, the second connecting portion 15 is provided with power supply terminals 15a and 15a for supplying power. Further, the cleaner 1 (see FIG. 1) of the present embodiment is configured to supply electric power for supplying power to the tip 6 from the cleaner body 2 through the hose portion 3, the operation tube 4, and the extension tube 5.

The above-described mouthpiece joint 13 is in a state in which the extension pipe 5 (see FIG. 1) is substantially perpendicular to the floor M, so that the extension pipe 5 faces The right side (long direction) is tilted, and the operation tube 4 (the grip 4a) is twisted in one of the left and right directions, and the mouthpiece main body 11 is rotated by substantially 90 degrees in one of the left and right directions, and is movable toward the moving direction. The suction body 11 is swept in the left and right direction. Therefore, the suction head 6 can be moved along the wall to perform the sweeping, or the tip 6 can be inserted into the narrow gap for sweeping.

Figure 3 is a bottom view of the tip.

As shown in FIG. 3, the tip 6 includes the first rotary cleaning element 20 and the second rotary cleaning element 30. The suction port casing 10 (the suction port main body 11) forms a suction chamber Q2 having an opening portion on the lower surface (the surface facing the cleaning surface) (see Fig. 6).

The first rotating cleaning element 20 is disposed on the front side in the front-rear direction along the longitudinal direction (left-right direction) of the mouthpiece body 11 and is rotatably supported by the mouthpiece body 11 . In addition, the first rotary cleaning element 20 is continuously provided from one end side in the longitudinal direction of the nozzle body 11 (the axial direction of the first rotary cleaning element 20) to the other end side.

Further, the first rotating cleaning element 20 includes a plurality of types of brushes 20a, 20b, and 20c such as brushes having different hardnesses, and the respective brushes 20a, 20b, and 20c are spirally arranged with respect to the rotating shaft 21 (see FIG. 6). Further, in the present embodiment, the case where the three types of brushes 20a, 20b, and 20c are provided is described as an example. However, the present invention is not limited thereto, and may be two or less types, or four or more types, or may be arranged in a spiral shape. The configuration of the blade member formed of an elastic material such as a spiral rubber is additionally provided between the brushes, and can be appropriately changed.

The second rotating cleaning body 30 has the brush body 30b having a smaller diameter than the diameter of the first rotating cleaning body 20, and is rotated after the first rotating cleaning body 20 Square and parallel configuration. In addition, the second rotary cleaning body 30 is continuously provided from the one end side in the axial direction of the first rotary cleaning body 20 (the longitudinal direction of the suction nozzle main body 11) to the other end side. In other words, the second rotary cleaning body 30 is constituted by one bristle body 30b.

Further, the second rotary cleaning body 30 has a shaft portion 30a (shaft) parallel to the rotation shaft 21 of the first rotary cleaning element 20, and the shaft portion 30a is rotatably supported by the nozzle housing 10 (suction port body 11). Further, the second rotary cleaning body 30 is configured to rotate with the frictional force of the floor M (see FIG. 6) when the tip 6 is moved, and is not driven by the motor. As described above, the second rotary cleaning body 30 is not driven by the electric motor but is supported by the suction port main body 11 through the shaft portion 30a. Therefore, the configuration of the second rotary cleaning body 30 can be simplified.

The tip 6 is provided with a brush drive switch 16, a wheel 17, and bearing cap members 31, 32 on the lower surface of the coupling portion 12 of the mouthpiece housing 10.

The brush drive switch 16 is a switch that detects whether or not the lower surface of the suction head 6 is in contact with the floor M (cleaning surface), together with the wheel 16a. The wheel 16a is provided by a spring pushing means such that a portion thereof constantly protrudes from the lower surface of the mouthpiece housing 10 (the joint portion 12). When it is detected that the wheel 16a protrudes from the mouthpiece housing 10 and does not come into contact with the floor M, the driving of the motor 40 is stopped by the control of the circuit board 50 (control board) to be described later, and the rotation of the first rotating cleaning body 20 is stopped. . When it is detected that the wheel 16a is pushed in and comes into contact with the floor M, the motor 40 is driven by the control of the circuit board 50 to rotate the first rotating cleaning element 20.

The wheel 17 is subjected to the forward and backward movement of the operation tube 4 and the stress of the rotation operation so that the bottom surface of the suction head 6 is in close contact with the ground (cleaning surface), Thereby, the efficacy of the operation performance of the tip 6 is improved.

Further, the wheel 17 has a shaft 17a parallel to the shaft portion 30a (see FIG. 6) of the second rotary cleaning body 30, and the shaft 17a is rotatably supported by the nozzle housing 10 (connecting portion 12). Further, the wheel 17 has a small diameter portion 17b having a smaller diameter than the left and right ends in the center in the axial direction. In addition, when the wheel 17 is in contact with the floor surface M, the recess formed by the small-diameter portion 17b is, for example, a gap having a size larger than a granular solid particle size such as rice grains.

The bearing cap member 31 is one end of the shaft 21 (see FIG. 6 ) that supports the first rotating cleaning element 20 and the shaft portion 30 a of the second rotating cleaning element 30 (see FIG. 6 ), and is fixed to the suction housing 10 via the screw 31 b. .

The bearing cap member 32 is the other end of the shaft 21a (see FIG. 6) that supports the first rotating cleaning element 20 and the shaft portion 30a of the second rotating cleaning body 30 (see FIG. 6), and transmits a locking mechanism to be described later (see Figure 8) is fixed to the mouthpiece housing 10.

Fig. 4 is a top view showing a state in which the upper casing of the suction head is removed.

As shown in Fig. 4, the suction head 6 includes a motor 40 that drives the first rotary cleaning element 20 above the first rotary cleaning element 20 (see Fig. 3) and the second rotary cleaning body 30 (see Fig. 3). The circuit board 50 of the motor 40 is controlled.

The motor 40 is attached to one end side in the longitudinal direction of the mouthpiece main body 11 (lower casing 11A). Further, the motor 40 has its output shaft 40a (see Fig. 6) arranged in parallel with the longitudinal direction of the mouthpiece body 11. Also, the motor 40 The output shaft 40a (see Fig. 6) extends toward the one end side in the longitudinal direction, and passes through the toothed belt 41p and the rotating shaft of the first rotary cleaning body 20 at one end portion (the end portion on the right side in the drawing) in the nozzle body 11. 21 (see Figure 6) link.

Further, the motor 40 has a front cover 42 fixed to one end of the stator 41, and a cover member 43 is attached to the other end of the stator 41 through a rear cover (not shown).

The stator 41 has an opening 41c for introducing cooling air into the stator 41 on the outer peripheral surface of the front cover 42 side. Further, an opening 41d for discharging the cooling air from the inside of the stator 41 is formed on the cover member 43 side of the stator 41. In addition, the number and position of the openings 41c and 41d are not limited to the embodiment as long as the motor 40 can be cooled, and can be appropriately changed.

The cover member 43 is a member covered by an end portion of a rear cover (not shown) of the stator 41, and is formed of an elastic member such as synthetic rubber, and covers an electronic component provided on the back cover. In the present embodiment, since one end side of the motor 40 is supported by the accommodating chamber Q1 by the elasticity of the cover member 43, the vibration of the motor 40 is transmitted to the mouthpiece casing 10 (see FIG. 2).

Further, an elastic spacer such as synthetic rubber (not shown) is attached to the front cover 42, and the motor 40 is supported by the lower casing 11A and the upper casing 11B of the mouthpiece casing 10 (see FIG. 2) through the gasket. (See Figure 6). Therefore, the motor 40 also has an anti-vibration structure on the side of the front cover 42.

The circuit board 50 is mounted on the longitudinal direction of the mouthpiece body 11 The other end side. Moreover, the circuit board 50 has a rectangular substrate in which the long sides are arranged along the long direction, and the mounting surface 50a is placed in the vertical direction in the vertical direction. Further, the mounting surface 50a is not limited to the vertical direction, and may be inclined with respect to the horizontal direction or toward the front-rear direction (longitudinal direction).

The connection portion 12 has a space Q3 that communicates with a space (accommodation chamber Q1) in which the motor 40 is housed in a region including the bearing portion 12g. The space Q3 communicates with the cylindrical space of the shaft 14a, and communicates with the flow path R (see FIG. 3) inside the first connecting portion 14. Further, a communication hole 12a1 that connects the flow path R (see FIG. 3) and the space Q3 is formed in the partition flow path R (see FIG. 3) and the wall portion 12a of the space Q3.

A bearing unit portion 41u is provided on one end side of the mouthpiece body 11. The bearing unit portion 41u is provided with a power transmission mechanism such as a pulley 41g or a toothed belt 41p that transmits the driving force from the motor 40 to the first rotary cleaning element 20 (see FIG. 3).

Figure 5 is a wiring diagram of the inside of the tip.

As shown in Fig. 5, the circuit board 50 is connected to the motor 40 via the transmission wires 60a and 60a, and the transmission wires 60b and 60b are connected to the power supply terminal 15a (see Fig. 4), and are connected to the brush drive switch 16 via the wires 60c and 60c ( See Figure 3).

The mouthpiece housing 10 accommodates the storage chamber Q1 (see FIG. 6) in which the motor 40 and the circuit board 50 are housed, and the suction chamber Q2 in which the first rotary cleaning body 20 and the second rotary cleaning body 30 are housed (see FIG. 6). The partition wall 11c is formed with communication portions 18 and 19 that communicate the storage chamber Q1 and the suction chamber Q2.

The communication portion 18 is composed of a plurality of small holes 18a, and is located between the motor 40 of the mouthpiece body 11 and the circuit board 50, and communicates with the suction chamber Q2 (see Fig. 6).

The communicating portion 19 is composed of a plurality of small holes 19a, is located at the connecting portion 12, and communicates with the flow path R (see FIG. 3). Further, the small hole 19a is formed to be more biased toward the circuit board 50 side than the center in the longitudinal direction of the nozzle body 11.

The tip 6 is provided with a light-emitting means 70 at a central portion in the longitudinal direction (left-right direction) of the mouthpiece body 11. The light-emitting means 70 includes a light guide plate 71 that extends elongated in the longitudinal direction, leg portions 72a and 72b that support the light guide plate 71, and an LED element 73.

The light guide plate 71 is formed of, for example, a transparent or translucent plate-like member such as an acrylic resin, and the transmission leg portions 72a and 72b are horizontally disposed above the circuit board 50. The leg portion 72a is a corner portion (corner portion on the inner side rear side) disposed on the circuit board 50, and the leg portion 72b is disposed on the partition wall 11c.

The LED element 73 is mounted at the position of the leg portion 72a at the corner of the circuit board 50. Further, a drive circuit for causing the LED element 73 to emit light is also provided on the circuit board 50. As described above, by assembling the driving circuit of the LED element 73 to the circuit board 50, the number of components (number of substrates) can be eliminated.

Light is transmitted from the end of the light guide plate 71 to the exposed portion 71a of the center portion by the light emission of the LED element 73. The exposed portion 71a is a portion that is exposed to the outside from the opening 11b (see FIG. 2) formed in the mouthpiece body 11. As described above, the LED element 73 is disposed on the side closest to the exposed portion 71a side. The length of the light guide plate 71 of the road substrate 50 can be minimized.

Further, the LED element 73 is not limited to an element that emits light in a single color, and an element that emits light of a plurality of colors may be used, and the color of the light is switched in accordance with the operation mode of the cleaner 1.

Fig. 6 is a cross-sectional view taken along line A-A of Fig. 2;

As shown in Fig. 6, the mouthpiece body 11 of the mouthpiece housing 10 includes a lower case 11A that forms a lower portion that covers the first rotary cleaning element 20, and an upper case 11B that covers the upper portion of the lower case 11A. The main components of the mouthpiece casing 10 and the mouthpiece joint 13 including the lower casing 11A and the upper casing 11B are formed of a lightweight and hard material such as a synthetic resin material such as ABS resin, and rigidity can be improved.

The lower casing 11A includes a suction chamber Q2 in which the first rotary cleaning body 20 and the second rotary cleaning body 30 are disposed, and a partition wall 11c in which the storage chamber Q1 of the electric motor 40 is housed. The partition wall 11c includes a partition curved portion 11d formed along the surface of the first rotary cleaning element 20, and a partition curved portion 11e formed along the surface of the second rotary cleaning body 30, and the partition curved portion 11d and the partition curved portion 11e. Formed continuously. In other words, it means that a wall extending in the vertical direction between the first rotary cleaning element 20 and the second rotary cleaning body 30 is not formed at the boundary between the partition curved portion 11d and the partition curved portion 11e. Moreover, the partition curved portion 11d is displayed in the cross-sectional direction so as to extend to the substantially front end portion of the first rotary cleaning element 20. The partition curved portion 11e is extended in the cross-sectional direction so as to extend rearward beyond the rear end portion of the second rotating cleaning body 30 and at a height at which the distal end substantially coincides with the shaft portion 30a.

The upper casing 11B has an integral package with the connecting body 12 The main body portion 11f of the upper portion of the motor 40 and the circuit board 50 (see FIG. 4) and the cover portion 11g disposed outside the main body portion 11f are stacked. The cover portion 11g is disposed across the front portion and the left and right end portions of the upper casing 11B (see Fig. 2). Further, a communication hole 11g1 that communicates with the outside of the storage chamber Q1 of the electric motor 40 and the suction head 6 is formed on the front side of the cover portion 11g. Further, in the present embodiment, the buffer portion 11a is held by the lower casing 11A and the upper casing 11B (the cover portion 11g).

In the present embodiment, the description is made by taking an example in which the position of the communication hole 11g1 is recognized when the mouthpiece housing 10 is displayed in the front direction (when displayed from the front), but the configuration is not limited to the above. For example, the communication hole 11g1 may be formed on the lower side in the vertical direction than the upper end portion 11a1 of the buffer portion 11a such that the communication hole 11g1 is not closed by the buffer portion 11a, and when the mouthpiece housing 10 is displayed from the front direction (displayed from the front) At the time, the configuration is such that the position of the communication hole 11g1 cannot be recognized.

The first rotating cleaning body 20 has a core member 22 that holds the brushes 20a, 20b, and 20c outside the rotating shaft 21. The core member 22 has a holding portion 22a that displays a substantially C-shape in a cross-sectional direction of the holding brush 20a, and holding portions 22b and 22b that are adjacent to both sides of the holding portion 22a and that hold the same cross-sectional shape of the brush 20b; and the holding portion 22b The holding portion 22c having the same cross-sectional shape of the brush 20c is adjacent to and held, and the holding portions 22a, 22b, and 22c are spirally arranged with respect to the axial direction of the rotating shaft 21. As described above, by arranging the brushes 20a, 20b, and 20c in a spiral shape, when the first rotary cleaning element 20 is rotated, the brushes 20a, 20b, and 20c can be continuously brought into contact with the floor surface M, and the first rotary cleaning body can be suppressed. 20 vibration during operation.

The second rotating cleaning body 30 has a pipe body 30e fixed around the shaft portion 30a, and a bristle body (hairing cloth) 30b is planted on the outer surface of the pipe body 30e. The tip end of the bristle body 30b is not limited to have a bristle height as the entire surface of the partition wall curved portion 11e, and does not need to be connected to the entire surface of the partition wall curved portion 11e.

For example, as shown in Fig. 6, a projection 35a having a substantially triangular cross-sectional shape may be provided inside the partition curved portion 11e (the surface facing the bristle body 30b). The projection 35a is formed to extend linearly at a position corresponding to the bristle body 30b along the shaft portion 30a. At this time, the bristle height is set such that the upright surface 35a1 of the projection 35a extending toward the shaft portion 30a comes into contact with the distal end of the bristle body 30b, whereby the frictional resistance of the second rotary cleaning body 30 in the rotational direction W2 is small and substantially freely rotatable. However, in the opposite direction to the rotational direction W2, there is a large frictional resistance and it becomes a locked state. In the present embodiment, the projections 35a are provided as an example. However, the present invention is not limited thereto, and the projections 35a may be provided in two or more intervals at intervals in the rotation direction of the second rotary cleaning body 30. The composition of the plural. Further, the cross-sectional shape of the projection 35a is not limited to a triangular shape, and may be a plate-like projection that extends toward the shaft portion 30a as long as it can restrict the rotation in the opposite direction to the rotation direction W2 of the second rotary cleaning body 30.

More specifically, the rotational driving force of the second rotary cleaning body 30 is the frictional force between the brush body 30b and the floor surface M, and the rotational braking force of the second rotary cleaning body 30 is the frictional force between the brush body 30b and the projection 35a. The minute fibers constituting the bristle body 30b are inclined toward the circumferential direction with respect to the tube body 30e, and the inclination direction thereof is the position where the brush body 30b is in contact with the ground. Set, from the front of the tip 6 to the rear. Therefore, when the tip 6 is advanced, the frictional force of the brush body 30b and the floor surface M, that is, the rotational driving force of the second rotary cleaning body 30 is reduced, and the frictional force of the brush body 30b and the projection 35a is the second rotary cleaning body. The rotational braking force of 30 is increased, and the rotation of the second rotary cleaning body 30 is restricted. Conversely, when the suction head 6 is advanced, the frictional force of the second rotating cleaning body 30, which is the frictional force between the brush body 30b and the floor surface M, is increased, and the frictional force of the brush body 30b and the projection 35a is the second rotating cleaning body 30. The rotational braking force is reduced, and the second rotary cleaning body 30 is rotated.

Further, in the present embodiment, the rotation of the second rotary cleaning body 30 is substantially locked when the suction head 6 is advanced, but it is not necessary to lock, as long as the suction head 6 is in the forward state. (2) The rotation of the rotary cleaning body 30 is relatively slow when it is free, so that the dust swept into the suction chamber Q2 by the first rotary cleaning element 20 can be prevented from being swept out to the rear of the suction nozzle main body 11.

In the present embodiment, the case where the bristle body 30b is uniformly disposed in the entire circumference of the tubular body 30e has been described as an example. However, the present invention is not limited thereto, and the bristle body 30b may be similar to the first rotary cleaning body 20 The axial direction of the shaft portion 30a is arranged in a spiral shape.

Further, it is assumed that the hue of one end and the other end of the first rotating cleaning element 20 is different from each other (for example, the one end side is green and the other end side is blue), and the hue of one end and the other end of the second rotating cleaning element 30 is It is preferable to set the hue (green on one end side and blue on the other end side) corresponding to one end and the other end of the first rotary cleaning element 20. Thereby, when the second rotary cleaning body 30 is removed and the assembly is performed again, the orientation of the brush body 30b can be prevented. In the opposite direction.

As shown in Fig. 6, the stator 41 (outer casing) of the motor 40 has a substantially elliptical shape in a cross section (a contour of a cross section orthogonal to the output shaft 40a and a tangential cross section). The stator 41 includes a pair of arc portions 41a and a pair of straight portions 41b that connect the arc portions 41a. Further, the motor 40 is not limited to an elliptical shape, and may be circular.

Further, in the storage chamber Q1, the electric motor 40 is housed in a posture in which the linear portion 41b is inclined with respect to the axis Z1 in the vertical direction, that is, one arc portion 41a faces forward and the other arc portion 41a faces rearward. .

In the storage chamber Q1, the front end portion 41s (the frontmost portion in the front-rear direction) of the motor 40 (stator 41) is placed in the rear end portion 20s of the first rotary cleaning element 20 (the last portion in the front-rear direction). More forward position. Thereby, the distance from the motor 40 which protrudes rearward from the rear end part 20s of the 1st rotational cleaning body 20 can be shortened, and the front-back width of the suction-portion main-body 11 can shorten.

In the storage chamber Q1, the lower end portion 41t (the lowermost portion in the vertical direction) of the motor 40 (stator 41) is placed in the upper end portion 20t (the uppermost portion in the vertical direction) of the first rotary cleaning element 20 in the storage chamber Q1. Lower position in the vertical direction. Thereby, the distance from the motor 40 which protrudes upward from the upper end part 20t of the 1st rotational cleaning body 20 can be shortened, and the height (maximum height) of the cleaning surface of the nozzle main body 11 can be reduced. As a result, the mouthpiece main body 11 can be easily inserted into a gap having a low height such as a sofa or a bed.

An armature 44 is rotatably supported inside the stator 41. Two magnets 45 formed in a tile shape for a magnetic field are fixed to the inner circumference of the stator 41 at intervals in the peripheral direction. That is, the motor 40 of the present embodiment is a motor having two slots and seven slots and two poles and seven slots provided with two magnets 45. Further, the number of slots described above is not limited to seven, and other numbers (for example, eight) may be set.

The armature 44 has an output shaft 40a to which a core member 44a and a commutator 44b are fixed. The core member 44a is a laminated core piece, and has a plurality of (for example, seven in this embodiment) teeth 44c extending radially around the output shaft 40a. The teeth 44c are formed in a substantially T-shape from the axial direction, and a dovetail-shaped slit having a long axial length is formed between the teeth 44c (for example, seven in the present embodiment). A coil (not shown) is attached to the tooth 44c through the slotted winding.

Moreover, the upper casing 11B of the mouthpiece main body 11 has a shape substantially along the arc portion 41a and the straight portion 41b in the vicinity of the circular arc portion 41a and in the vicinity of the linear portion 41b. Moreover, the lower casing 11A of the nozzle body 11 extends substantially upward from the middle of the partition curved portion 11e, and is coupled to the upper casing 11B.

Fig. 7 is a cross-sectional view taken along line B-B of Fig. 2;

As shown in Fig. 7, the circuit board 50 is placed in the storage chamber Q1 such that the mounting surface faces vertically (vertical direction) upward. In other words, the circuit board 50 is disposed not on the rear side of the first rotating cleaning body 20 but on the upper end portion 20t (the uppermost portion in the vertical direction) of the first rotating cleaning element 20. Further, the circuit board 50 is fixed by means of a positioning means or a screw, and is fixed in the mouthpiece body 11 without being biased. Moreover, in this embodiment, the circuit board 50 is arranged. Although the description has been made in the case of being horizontal, the configuration of the circuit board 50 may be arranged in a state of being inclined with respect to the horizontal direction, or the mounting surface of the circuit board 50 may be placed in a state in which the circuit board 50 is erected in the front-rear direction.

Fig. 8 is a top view showing the locking mechanism of the bearing cap member, (a) being in a locked state and (b) being in a locked state. Further, Fig. 8(a) is a view showing a state in which the bearing cap member 32 (see Fig. 8(b)) is removed for convenience of explanation.

As shown in Fig. 8 (a), the nozzle body 11 has a bearing portion 41m that rotatably supports the end (the other end) of the rotating shaft 21 of the first rotating cleaning element 20, and rotatably supports the second rotating cleaning body 30. The bearing portion 41n of the end portion (the other end) of the shaft portion 30a.

The bearing cap member 32 is a lower casing 11A (refer to FIG. 6) that is detachable (opened and closed) to the nozzle body 11, and is attached to the lower surface of the other end side of the mouthpiece body 11 through the locking member 33.

The locking member 33 has a cylindrical support portion 33a, and the support portion 33a is supported from above and below by a support protrusion (not shown) that protrudes from the upper casing 11B and the lower casing 11A. Further, the locking member 33 is formed with a locking portion 33b that can be moved forward and backward from a slit-like hole (not shown) formed in the side surface 41u1 of the bearing unit portion 41u by the rotation operation of the support portion 33a, and The locking portion 33b advances and retracts the operation lever 33c from the side surface 41u1.

In the locked state shown in Fig. 8(a), a part of the locking portion 33b protrudes from a slit-like hole (not shown) formed on the side surface 41u1, and enters to protrude into the bearing cover member. 32 slit-shaped holes The locking portion 33b (not shown) fixes the bearing cap member 32 to the nozzle body 11.

Further, the operating lever 33c is rotated from the locked state shown in Fig. 8(a) toward the clockwise direction shown in the figure, and the support portion 33a is rotated in the clockwise direction. As shown in Fig. 8(b), the locking portion is turned The 33b is pulled out from a slit-shaped hole (not shown) formed in the bearing cap member 32, and the bearing cap member 32 can be detached from the nozzle body 11.

However, in the brushes 20a, 20b, and 20c of the first rotary cleaning element 20, it is easy to wind a fiber or the like such as a thread, and the dust of the kind is gradually accumulated by the rotation when it is wound, and is tightly wound and fixed. The cylindrical base of the brushes 20a, 20b, 20c. Therefore, in order to remove the fibrous material, hair, or the like, which is wound around the ends of the brushes 20a, 20b, and 20c of the first rotary cleaning element 20, it is necessary to remove the first rotary cleaning element 20 from the suction nozzle main body 11 and perform cleaning.

Therefore, in a state where the suction head 6 detached from the extension pipe 5 is upward, the operation of the operation lever 33c is performed as described above, and the bearing cap member 32 is detached from the suction nozzle main body 11. Then, the brushes 20a, 20b, and 20c on the side of the bearing portion 41m of the first rotary cleaning element 20 are lifted by the fingers, and the first rotating cleaning element 20 is lifted upward toward the other end side. Thus, one end (opposite side of the bearing portion 41m) of the first rotating cleaning body 20 is detached from the nozzle body 11.

In the second rotating cleaning element 30, the bristle body 30b on the side of the bearing portion 41n is taken up, and after lifting up the second rotating cleaning element 30, the second rotating cleaning element 30 is lifted upward toward the other end side. Will be 2 One end of the rotating cleaning body 30 (opposite side of the bearing portion 41n) is detached from the nozzle body 11.

After the cleaning, the one end of the first rotating cleaning element 20 and the one end of the second rotating cleaning element 30 are assembled to the nozzle body 11 in the reverse order, and the other end of the first rotating cleaning body 20 is pressed from above. The bearing portion 41m presses the other end of the second rotary cleaning body 30 into the bearing portion 41n. Then, after the bearing cap member 32 is positioned at a predetermined position of the mouthpiece body 11, the operation of the operation lever 33c is performed in the opposite direction to the above, and the bearing cover member 32 is locked by the locking portion 33b.

As described above, by removing only the one-side bearing cap member 32, both the first rotating cleaning element 20 and the second rotating cleaning body 30 can be detached from the nozzle body 11, and the first rotating cleaning body 20 and the second rotation can be lifted. Workability at the time of cleaning of the cleaning body 30. By forming the second rotary cleaning body 30 with a single brush, the second rotary cleaning body 30 can be easily replaced. For example, the second rotating cleaning body 30 is prepared for carpets and parquets in advance, and is easily replaced according to the user's preference (use environment). In addition, in the case where the user does not need to take in the function of sucking dust from the rear side of the mouthpiece main body 11, the second rotating cleaning body 30 may be replaced with a bristles (brush) to meet the above requirements.

Fig. 9 is a side view showing the flow of dust when the tip is advanced. When the tip 6 is not in contact with the floor M, the wheel 16a provided in the connecting portion 12 protrudes downward, the brush driving switch 16 is closed, and the operation of the first rotating cleaning body 20 is stopped.

As shown in Figure 9, the tip 6 is in contact with the ground M once. At this time, the wheel 16a is pushed in (see the white cutout arrow), and the brush drive switch 16 is turned on to rotate the first rotary cleaning body 20 in the W1 direction (counterclockwise direction). At this time, by the bending of the tips of the brushes 20a, 20b, and 20c in the region in contact with the floor surface M, the contact resistance between the brushes 20a, 20b, and 20c and the floor surface M can be sufficiently ensured, and the dust on the floor surface M can be effectively swept out.

Similarly, by the contact of the second rotating cleaning body 20 with the floor surface M, the bristle body 30b in the region in contact with the floor surface M is curved, and the contact resistance between the brush body 30b and the floor surface M can be sufficiently ensured.

At this time, when the suction head 6 is advanced in a state where the suction head 6 is in contact with the floor surface M, the contact resistance of the second rotating cleaning body 30 between the brush body 30b and the partition wall bending portion 11e (see FIG. 6) is smaller than the brush body 30b. The contact resistance with the ground M is thus rotated in the direction of rotation indicated by the symbol W3, and the dust DS on the floor M can be introduced into the suction chamber Q2 (see Fig. 6). The introduced dust DS is transported from the suction chamber Q2 (see Fig. 6) through the flow path R (see Fig. 3) to the passage of the mouthpiece joint 13 (see Fig. 2), and then through the extension tube 5, the operation tube 4 and the hose portion 3 are attracted to the dust collecting portion 2b of the cleaner body 2 (see Fig. 1). The air after the dust is removed by the dust collecting portion 2b passes through a filter (not shown) and the electric blower 2a, and is discharged to the outside of the cleaner body 2 (see Fig. 1).

Fig. 10 is a side view showing the flow of dust when the tip is advanced.

As shown in Fig. 10, when the tip 6 is advanced in a state where the tip 6 is in contact with the floor M, the contact resistance of the second rotating cleaning body 30 between the brush body 30b and the projection 35a of the partition curved portion 11e is larger than that of the brush body 30b. versus The contact resistance of the floor surface M cannot be rotated, and the dust sucked into the suction chamber Q2 can be prevented from being swept out to the rear of the mouthpiece body 11. In particular, by the rotation of the first rotary cleaning element 20, the dust sucked into the suction chamber Q2 is ejected rearward, and it is possible to suppress flying toward the rear of the suction main body 11.

The sucked dust is transported to the suction port 13 through the flow path R (see Fig. 3) from the suction chamber Q2 (see Fig. 6), and then sucked through the extension pipe 5, the operation pipe 4, and the hose portion 3. The dust collecting portion 2b to the cleaner body 2 (refer to Fig. 1). The air after the dust is removed from the dust collecting portion 2b passes through a filter (not shown) and the electric blower 2a, and is discharged to the outside of the cleaner body 2 (see Fig. 1).

As described above, the second rotary cleaning body 30 that is in contact with the floor surface M is provided behind the first rotary cleaning element 20, whereby the second rotary cleaning body is provided when the suction head 6 is advanced (when the suction head 6 is pulled rearward). 30 is rotated by the contact resistance with the floor M, and the dust DS behind the mouthpiece main body 11 can be sucked into the suction chamber Q2 (refer to Fig. 9).

When the suction head 6 is advanced (when the suction head 6 is pushed forward), the rotation of the second rotary cleaning body 30 is restricted, so that the dust swept by the first rotary cleaning element 20 into the suction chamber Q2 can be prevented from being swept out. To the rear of the mouthpiece body 11 (see Figure 10).

Moreover, since the movable portion is not required as a means for restricting the rotation direction of the second rotary cleaning body 30, the structure is simplified. In addition, due to the intrusion of dust and the like, there is a possibility that the function of the restriction function is degraded.

Fig. 11 is a bottom view showing the flow of dust when the tip is advanced.

As shown in Fig. 11, since the second rotary cleaning body 30 is provided from the one end of the first rotary cleaning body 20 across the other end, when the suction head 6 is advanced (when the suction head 6 is pulled rearward), The dusts DS1, DS2 on both sides (axial sides) of the mouthpiece body 11 are sucked into the suction chamber Q2 (see Fig. 6), and the dust DS3 in the center of the mouthpiece body 11 can be sucked into the suction chamber Q2 (see paragraph 6). Figure). As described above, when the suction head 6 is advanced, the dusts DS1, DS2, and DS3 can be sucked across the full width of the suction chamber Q2.

Further, since the small diameter portion 17b is formed in the wheel 17, when the suction head 6 is advanced, the dust DS3 can be passed through the small diameter portion 17b, and the dust DS3 can be easily sucked by the second rotary cleaning body 30. To the suction chamber Q2 (see Figure 6).

Figure 12 is a bottom view of the mode showing other effects obtained by the tip.

As shown in Fig. 12, the first rotary cleaning element 20 and the second rotary cleaning element 30 are disposed apart from each other in the front-rear direction, and a gap S is formed between the first rotary cleaning element 20 and the second rotary cleaning element 30. When the tip 6 is moved, the dust DS4 located on the left and right (side) of the tip 6 can be sucked from the gap S into the suction chamber Q2 (see Fig. 6).

As described above, since the second rotating cleaning body 30 is continuously provided across the entire width of the suction chamber Q2, dust (dust) can be prevented from flying backward from the suction chamber Q2, and sound leakage in the suction chamber Q2 can be reduced. There is an increase in noise. Further, since the second rotary cleaning body 30 is continuously provided across the entire width of the suction chamber Q2 to increase the airtightness of the suction chamber Q2, the dust DS4 located on the left and right (side) of the suction head 6 can be increased from the gap S. The attraction to the suction chamber Q2.

Further, the gap S between the first rotating cleaning element 20 and the second rotating cleaning element 30 is not excessively large in the front-back width D (see FIG. 2) of the nozzle body 11, and does not damage the suction head 6 The left and right side suction dust DS4 is set appropriately.

Figure 13 is a schematic view showing the flow of cooling air inside the tip.

As shown in Fig. 13, the electric blower 2a (see Fig. 1) for driving the cleaner body 2 (refer to Fig. 1) is used so that the air E1 sucked from the communication hole 11g1 (see Fig. 6) touches the upright communication. The wall portion 11m on the deep side of the hole 11g1 advances to the one end side (the right side in the drawing) along the wall portion 11m, and then enters the motor 40 side, passes through the inside of the stator 41 from the opening 41c of the stator 41 of the motor 40, and from the stator 41 The opening 41d is discharged to cool the motor 40.

The air cooled by the motor 40 is indicated by the symbol E2, and is sucked into the suction chamber Q2 through the communication portion 18 (see Fig. 6). Further, the air after cooling the motor 40 is the communication hole 12a1 which is sucked into the communication space Q3 and the flow path R (see FIG. 3) as indicated by a symbol E3. Moreover, the air after cooling the motor 40 is indicated by the symbol E4, and is sucked into the first connecting portion 14 through the space Q3 and the inside of the shaft 14a.

Further, the electric blower 2a (see Fig. 1) of the cleaner body 2 (see Fig. 1) is driven so that the air E5 sucked from the communication hole 11g2 (see Fig. 7) advances along the wall portion 11m to the other end side. (left side of the drawing), after bypassing the side rear side of the circuit board 50, formed from The communication hole 11n formed in the wall portion outside the circuit board 50 enters the circuit board 50 side, flows through the circuit board 50, and is then sucked into the flow path R through the communication portion 19 (see FIG. 3).

As described above, the cooling air is sucked into the storage chamber Q1 (see FIGS. 6 and 7), and the motor 40 and the circuit board 50 can be cooled. In addition, the configuration of the cooling air flow is an example, but the present invention is not limited to this embodiment as long as the motor 40 and the circuit board 50 can be cooled.

As described above, the vacuum cleaner 1 of the first embodiment includes the mouthpiece housing 10 having the partition wall 11c, and the suction chamber Q2 in which the first rotary cleaning body 20 and the second rotary cleaning body 30 are disposed, and is disposed in the suction chamber Q2. The motor 40 and the storage chamber Q1 of the circuit board 50 are accommodated above the suction chamber Q2, and the front end portion 40s of the motor 40 is positioned further forward than the rear end portion 20s of the first rotary cleaning body 20, and is disposed on the rotary shaft 21 in the storage chamber Q1. The motor 40 is disposed on one end side in the axial direction, and the circuit board 50 is disposed on the other end side, and the full width of the second rotating cleaning element 30 from the one end of the suction chamber Q2 to the other end is provided.

As described above, the motor 40 and the circuit board 50 are disposed above the first rotating cleaning body 20, that is, the motor 40 is disposed on one end side in the axial direction of the rotating shaft 21, and the circuit board 50 is disposed on the other end side, so that the suction port can be shortened. The front and rear width D of the mouthpiece body 11 of the casing 10 (see FIG. 2) can reduce the contact area of the mouthpiece body 11 with the floor M, and reduce the friction between the floor M and the tip 6, thereby improving the operability of the user. (The operation of moving the tip 6 can be performed with a small force, etc.).

In addition, since the end of the suction chamber Q2 crosses the other end Since the second rotating cleaning body 30 is provided in a wide manner, when the suction head 6 is advanced (when pulled backward), dust can be sucked from the floor M across the entire width behind the suction nozzle main body 11 (first rotating cleaning body 20).

Moreover, the front and rear width D of the mouthpiece main body 11 can be shortened (see FIG. 2), and when the left and right direction (long direction) of the mouthpiece main body 11 is swept in the moving direction, it can be inserted into a narrow wall or a furniture room. The gap is swept.

Further, in the first embodiment, the second rotary cleaning body 30 is continuously formed from one end of the suction chamber Q2 to the other end. Thereby, it is possible to prevent the dust sucked from the front side of the tip 6 from moving out of the second rotating cleaning body 30 when the tip 6 advances. Further, in the first embodiment, it is possible to suppress the operation sound from leaking from the rear of the tip 6 to the outside.

In the first embodiment, the second rotary cleaning body 30 is disposed separately from the first rotary cleaning body 20. Thereby, the dust on the side of the tip 6 is sucked from the gap S between the first rotary cleaning element 20 and the second rotary cleaning element 30 (see FIG. 12). Thereby, dust from all directions of the front and rear of the suction head 6 can be obtained.

Further, in the first embodiment, the second rotary cleaning body 30 is configured to be detachable from the nozzle housing 10 (see Fig. 8). With this configuration, the second rotating cleaning element 30 can be removed from the nozzle housing 10, so that the cleaning operation of the second rotating cleaning element 30 can be facilitated. In addition, the type of the second rotary cleaning body 30 can be changed, for example, a brush body (brush) for replacing the floor surface M with a carpet, and a brush body (brush) for the parquet floor with the floor M being a parquet floor, which can be changed depending on the use environment. Kind of second rotating cleaning body 30 Class, can be effectively cleaned.

In the first embodiment, the case where the output shaft 40a of the motor 40 is positioned later than the rotation shaft 21 of the first rotary cleaning element 20 and the motor 40 is disposed behind the upper portion of the first rotary cleaning element 20 has been described as an example. However, the front end portion 40s of the motor 40 may be located further forward than the rear end portion 20s of the first rotary cleaning element 20. For example, the rotation shaft 21 of the first rotary cleaning element 20 and the motor 40 may be disposed. The output shaft 40a is stacked in the vertical direction, in other words, the motor 40 is placed directly above the first rotary cleaning element 20. Further, the output shaft 40a of the motor 40 may be positioned further forward than the rotation shaft 21 of the first rotary cleaning body 20 as long as the front and rear width of the mouthpiece main body 11 are not damaged.

In the first embodiment, the lower end portion 40t (see Fig. 6) of the motor 40 is located below the vertical direction of the upper end portion 20t (see Fig. 6) of the first rotary cleaning element 20, and has been described as an example. However, the lower end portion 40t of the motor 40 may be positioned higher than the vertical direction of the upper end portion 20t of the first rotary cleaning element 20.

(Second embodiment)

Fig. 14 is a bottom view showing the suction head of the vacuum cleaner according to the second embodiment of the present invention. In the suction head 6A of the vacuum cleaner 1 according to the second embodiment, the second rotary cleaning body 30A is replaced by the second rotary cleaning body 30A. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

As shown in Fig. 14, the second rotary cleaning body 30A includes three rotary cleaning bodies 37a, 37b, and 37c, and the respective axial positions are formed on the same straight line L. The rotary cleaning body 37a is a bearing (not shown) that rotatably supports one end of the bearing cover member 31 side, and the other end is rotatably supported by a bearing portion 37d formed in the nozzle body 11. The rotary cleaning body 37b is rotatably supported at one end by a bearing portion 37d, and the other end is rotatably supported by a bearing portion 37e formed in the nozzle body 11. The rotary cleaning body 37c is a bearing (not shown) that rotatably supports one end of the bearing portion 37e and the other end rotatably supported on the bearing cover member 32 side. In addition, the configuration of each of the rotary cleaning bodies 37a, 37b, and 37c is the same as that of the second rotary cleaning element 30 of the first embodiment.

According to the second embodiment, since the second rotary cleaning body 30A (rotary cleaning elements 37a, 37b, 37c) is provided from one end of the suction chamber Q2 (see Fig. 6) to the other end, when the suction head 6A is advanced, The dust of the floor M behind the suction body 11 can be sucked across substantially the entire width of the suction chamber Q2.

In addition, the second rotating cleaning body 30A is constituted by three rotating cleaning bodies 37a, 37b, and 37c. For example, the density of the bristles of the central rotating cleaning body 37b can be increased to improve airtightness, and the rotary cleaning bodies on both sides can be reduced. The density of the bristles of 37a and 37c can easily attract the dust DS1, DS2, etc. in the rear, and it is easy to make the specifications of the three rotating cleaning bodies different depending on the purpose.

Further, in the present embodiment, the case where the two rotary cleaning bodies 37a, 37b, and 37c constitute the second rotary cleaning body 30A has been described. Although it is not limited to three, it may be composed of two or four or more.

Further, in the present embodiment, the case where all the lengths of the rotary cleaning bodies 37a, 37b, and 37c are the same in the axial direction has been described as an example. However, the lengths of the rotating cleaning bodies 37a, 37b, and 37c may be different from each other. For example, the rotary cleaning body 37b is provided to be larger than the rotary cleaning body 37a. The length of the 37c is long.

Further, the central rotating cleaning body 37b may be closer to the first rotating cleaning body 20 side than the other rotating cleaning bodies 37a and 37c. Alternatively, the center rotary cleaning body 37b is configured to be farther away from the first rotary cleaning body 20 side than the other rotary cleaning bodies 37a and 37c. This allows large dust to be easily attracted to the flow path R (see Fig. 3).

(Third embodiment)

Fig. 15 is a bottom view showing the suction head of the vacuum cleaner according to the third embodiment of the present invention. In the suction head 6B of the vacuum cleaner 1 according to the third embodiment, the second rotary cleaning body 30B is replaced by the second rotary cleaning body 30B. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

As shown in Fig. 15, the suction head 6B is provided with three rotary cleaning bodies 39a, 39b, and 39c, and the left and right rotary cleaning bodies 39a and 39c are disposed offset on the front side, and the center rotary cleaning body 39b is disposed on the rear side. Further, one end of the rotary cleaning body 39b and the other end of the rotary cleaning body 39a are disposed to overlap each other in front and rear, and the other end of the rotary cleaning body 39b and the one end of the rotary cleaning body 39c are disposed to overlap each other.

The rotary cleaning body 39a is a bearing (not shown) that rotatably supports one end of the bearing cover member 31, and the other end is rotatably supported by a bearing portion 39d formed in the nozzle body 11. The rotary cleaning body 39c is a bearing (not shown) that rotatably supports one end of the rotating cleaning body 39c on the bearing portion 39e formed in the nozzle body 11 and rotatably supports the other end thereof to the bearing cap member 32. The rotary cleaning body 39b is rotatably supported at one end thereof in a bearing portion 39f formed in the vicinity of the coupling portion 12, and the other end is rotatably supported by a bearing portion 39g formed in the vicinity of the coupling portion 12.

According to the third embodiment, since the second rotary cleaning body 30B (rotary cleaning elements 39a, 39b, 39c) is provided from the one end of the suction chamber Q2 (see Fig. 6) across the other end, the suction head 6B is provided. At the time of the backward movement, the dust of the floor M behind the suction body 11 can be sucked across substantially the entire width of the suction chamber Q2.

As described above, since the gap between the rotary cleaning bodies 39a and 39b and the gap between the rotary cleaning bodies 39b and 39c can be eliminated, the gap (the dust) can be reduced from the suction chamber Q2 to the rear by the gap, and the suction can be reduced. The sound in the chamber Q2 leaks out and there is an increase in noise. Further, since the airtightness of the suction chamber Q2 is raised, the suction force of sucking the dust DS4 located on the left and right (side) of the suction head 6 from the gap S into the suction chamber Q2 can be increased (see Fig. 12).

The present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the scope of the invention. For example, in each of the embodiments, the second rotating cleaning bodies 30, 30A, and 30B are disposed from the one end in the axial direction of the first rotating cleaning element 20, but the second rotating cleaning bodies 30, 30A, and 30B may be described as an example. The second rotary cleaning bodies 30, 30A, and 30B are configured to grow in the axial direction from the first rotary cleaning element 20. In addition, at this time, it is preferable to introduce the dust in which the second rotating cleaning bodies 30, 30A, and 30B are swept into the suction chamber Q2 when the suction heads 6, 6A, and 6B are advanced.

6‧‧‧ Tips

10‧‧‧ suction housing

11a‧‧‧ buffer

13‧‧‧ suction joint

14‧‧‧1st link

15‧‧‧2nd link

16‧‧‧ brush drive switch

16a‧‧‧ Wheels

17‧‧‧ Wheels

17a‧‧‧Axis

17b‧‧‧Little Trails Department

20‧‧‧1st rotating cleaning body

20a, 20b, 20c‧‧‧ brush

30‧‧‧2nd rotating cleaning body

30b‧‧‧breast body

31‧‧‧bearing cover member

31b‧‧‧The back

32‧‧‧bearing cover member

R‧‧‧Flow

Claims (5)

A vacuum cleaner comprising: a vacuum cleaner main body; an electric blower that generates an attractive force; a dust collecting portion that collects dust and dust, and a suction head that is connected to the cleaner main body, wherein the suction head includes: a first rotating cleaning body; a rotating shaft parallel to the cleaning surface; the motor having an output shaft parallel to the rotating shaft, rotationally driving the first rotating cleaning body; a control substrate to control the motor; and a second rotating cleaning body disposed in the first rotating cleaning body a rear side having a shaft parallel to the rotating shaft and contacting the cleaning surface; and the suction port housing having a partition wall partitioning the suction chamber in which the first rotating cleaning body and the second rotating cleaning body are disposed, and a partition a storage chamber of the motor and the control board is accommodated above the suction chamber, and a front end portion of the motor is forward of a rear end portion of the first rotary cleaning body, and an end of the storage chamber at an axial direction of the rotation shaft The motor is disposed on the side, and the control substrate is disposed on the other end side, and the second rotating cleaning body is at least sucked from the suction The one end chamber to the other end is provided. The vacuum cleaner according to claim 1, wherein the second rotary cleaning body is continuously formed from the one end to the other end. A vacuum cleaner according to item 1 or 2 of the patent application scope, The second rotating cleaning body is disposed separately from the first rotating cleaning body. The vacuum cleaner according to any one of the first aspect, wherein the second rotary cleaning body is detachably attachable to the suction housing. A suction head comprising: a first rotating cleaning body having a rotating shaft parallel to a cleaning surface; and an electric motor having an output shaft parallel to the rotating shaft, rotationally driving the first rotating cleaning body; and a control board to control the motor a second rotating cleaning body disposed behind the first rotating cleaning body and having a shaft parallel to the rotating shaft and in contact with the cleaning surface; and the suction housing having a partition wall in which the partition wall is partitioned a rotating chamber and a suction chamber of the second rotating cleaning body, and a storage chamber disposed above the suction chamber and housing the motor and the control substrate, wherein a front end portion of the motor is closer to a rear end of the first rotating cleaning body Further, the accommodating chamber is disposed on one end side in the axial direction of the rotating shaft, and the control board is disposed on the other end side, and the second rotating cleaning body is provided at least from the one end of the suction chamber to the other end .