CN104274125B - Intake port of electric cleaner and electric cleaner provided with same - Google Patents

Abstract

The invention provides a suction body of an electric vacuum cleaner and an electric vacuum cleaner using the same. When the suction body retreats, it can suck the solid dust existing on the ground behind the suction body, and when the suction body advances, the dust sucked from the front is difficult to be discharged to the rear of the suction body. The suction body of the electric vacuum cleaner includes: a first rotating cleaning body having a rotation axis substantially parallel to the cleaning surface; a suction chamber supporting the first rotating cleaning body; and a second rotating cleaning body arranged on the first rotating cleaning body. The rear of the body has an axis parallel to the above-mentioned rotation axis, which is in contact with the above-mentioned cleaning surface. On the surface of the second rotating cleaning body, a bristle body or an elastic body is provided. The bristle body or elastic body is connected to a part of the suction body It is arranged in a contacting manner, and is arranged obliquely in the circumferential direction, so that the rotation of the second rotating cleaning body is allowed when the suction body retreats, and the rotation of the second rotating cleaning body is restricted when it advances.

Description

Suction body of electric vacuum cleaner and electric vacuum cleaner using it

technical field

The invention relates to a suction body of an electric vacuum cleaner and an electric vacuum cleaner using it.

Background technique

As a prior art, the following technology has been proposed: a suction member (suction body) of an electric vacuum cleaner in which a napping cloth roller body freely rotating on the surface to be vacuumed is attached to the suction member main body (suction body) having a suction port. , In the suction member of this electric vacuum cleaner, a brake mechanism that restricts the movement in one direction of the rotation direction of the above-mentioned raised cloth roller body and can freely perform the movement in the opposite direction of the rotation direction is provided (for example, refer to Patent Document 1) .

prior art literature

patent documents

Patent Document 1: Japanese Patent No. 3268514

Contents of the invention

The technical problem to be solved by the invention

However, the brake mechanism described in Patent Document 1 is composed of a wedge-shaped space formed between the peripheral surface of the raised cloth roller body of the suction member main body (suction port main body) and the opposing wall surface, and a brake wheel arranged In this wedge-shaped space, there is between the peripheral surface of the above-mentioned raised cloth roller body and the above-mentioned wall surface, and when the action of one direction of the rotation direction of the raised cloth roller body is embedded in the depth in the wedge-shaped space, the raised cloth roller is restricted. The action of the body, so the braking mechanism is complicated. In addition, there is a problem that the braking function of the raised cloth roller body is impaired due to the obstruction of the operation of the braking wheel due to entry of dust or the like or entanglement of the thread. Therefore, there are the following problems: when the suction member (suction body) retreats, the rotation of the napping cloth roller body is restricted, and the dust behind the suction part (suction body) is not collected, or when the suction part (suction body) advances, the napping cloth roller The body rotates, and the dust attracted to the suction port goes to the rear of the raised cloth roller body.

The object of the present invention is to provide a suction nozzle body of an electric vacuum cleaner and an electric vacuum cleaner using the same, which restrict movement in one direction of the rotation direction of the raising cloth roller body with a simple structure, and allow movement in the opposite direction of the rotation direction, thereby Improves the dust collection performance when the suction body is retracted.

Technical solutions for technical problems

The present invention includes: a first rotating cleaning body having a rotation axis substantially parallel to the cleaning surface; a suction chamber supporting the first rotating cleaning body; and a second rotating cleaning body disposed behind the first rotating cleaning body, It has an axis parallel to the above-mentioned rotation axis and is in contact with the above-mentioned cleaning surface. On the surface of the second rotating cleaning body, a bristle body or an elastic body is provided. , and obliquely arranged in the circumferential direction, so that the rotation of the second rotating cleaning body is allowed when the suction body retreats, and the rotation of the second rotating cleaning body is restricted when it advances.

Invention effect

According to the present invention, it is possible to provide the suction body and the use of the electric vacuum cleaner which has a simple structure and improves the dust collection performance when the suction body moves backward by restricting the movement in one direction of the rotation direction of the napping roller body and allowing the movement in the opposite direction of the rotation direction. It's an electric vacuum cleaner.

Description of drawings

FIG. 1 is an overall appearance perspective view showing an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is a top view of the mouthpiece body according to the embodiment of the present invention.

Fig. 3 is a bottom view of the mouthpiece body according to the embodiment of the present invention.

Fig. 4 is a top view showing the state of the mouthpiece body with the upper case removed according to the embodiment of the present invention.

Fig. 5 is an A-A sectional view of Fig. 2 .

Fig. 6 is a B-B sectional view of Fig. 2 .

Fig. 7 is a side view of the mouthpiece body according to the embodiment of the present invention in a state separated from the ground.

Fig. 8 is a side view of the mouthpiece body according to the embodiment of the present invention in a state in contact with the ground.

Fig. 9 is a side view of the mouthpiece body according to the embodiment of the present invention when it advances.

Fig. 10 is a side view of the mouthpiece body according to the embodiment of the present invention at the time of retreating.

Fig. 11 is an A-A sectional view of Fig. 2 and is an enlarged view of the vicinity of the second rotary cleaning body.

detailed description

Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate, but the present embodiments are not limited to the following, and can be appropriately changed and implemented within the scope of the present invention.

FIG. 1 is an overall appearance perspective view showing a vacuum cleaner 1 according to an embodiment of the present invention. As shown in FIG. 1 , an electric vacuum cleaner 1 includes a vacuum cleaner main body 2 , a hose portion 3 , an operation tube 4 provided with a hand-operated switch SW and the like, a telescopic extension tube 5 , and a nozzle body 6 .

The cleaner main body 2 includes an electric blower 2a that generates suction, a dust collection unit 2b that stores dust collected by the suction of the electric blower 2a, and the like. In addition, in the present embodiment, a so-called cyclone type electric vacuum cleaner is used as an example to describe, but it can also be applied to a so-called paper bag type electric vacuum cleaner.

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 . In addition, the other end of the hose part 3 is connected to one end of the operation pipe 4 .

The operation pipe 4 includes: a grip (grip) 4a provided with a hand-held operation switch SW; An unillustrated power supply terminal provided at one end of the extension tube 5 is connected to the power supply terminal.

By operating the hand-operated switch SW of the operation tube 4, the operation of the electric blower 2a can be switched between strong, medium and weak, and the conduction and disconnection of the first rotary cleaning body 20 provided on the suction port body 6 can be performed.

The extension pipe 5 is composed of an outer pipe 5a and an inner pipe 5b. One end of the inner pipe 5b is inserted into the other end of the outer pipe 5a and connected so that a ventilation path (not shown) provided inside the outer pipe 5a and the inner pipe 5b Connected, stretchable. In addition, FIG. 1 shows the state in which the extension tube 5 is the shortest.

Fig. 2 is a top view of the mouthpiece body 6 according to the embodiment of the present invention.

As shown in FIG. 2 , the mouthpiece body 6 includes a mouthpiece housing 10 having a substantially T-shape when viewed from above, and a mouthpiece connector 13 connected to the mouthpiece housing 10 .

The suction port housing 10 includes: when viewed from above, the suction port main body 11 is formed elongatedly in the left-right direction (width direction, the rotation axis direction of the first rotating cleaning body 20 described later); The central part is the connection part 12 connected with the suction port connector 13. In the connection part 12, the flow path R (refer FIG. 3) which connects the mouthpiece main body 11 and the mouthpiece connector 13 is formed.

The mouthpiece main body 11 is provided with a buffer member (bumper) 11a from the front end surface to the left and right side surfaces. The buffer member 11a is formed of elastic materials such as rubber or elastomer, and maintains airtightness in the suction port main body 11 during use, and prevents the suction port body 11 from colliding with furniture or the like when the electric vacuum cleaner 1 (refer to FIG. 1 ) is used. Damage to furniture, etc., and the effect of a cushioning material that absorbs the impact on the mouthpiece body 11.

The mouthpiece body 6 is provided with a light emitting mechanism 70 at the central portion of the mouthpiece main body 11 in the longitudinal direction (left-right direction). This light-emitting mechanism 70 displays the strong, medium and weak states in the operation of the electric blower 2a selected by operating the hand operation switch SW of the operation tube 4, etc. (for example, red during strong operation, orange during medium operation, and orange during weak operation is green).

The suction port connector 13 includes a first connection pipe 14 rotatably connected to the coupling portion 12 and a second connection pipe 15 rotatably connected to the first connection pipe 14 .

The first connecting pipe 14 has a substantially semi-racetrack (semi-oblong) shape in the upper view shown in FIG. The axial direction of the shaft 14a is the longitudinal direction of the mouthpiece main body 11, and the both ends of the shaft 14a are supported by a pair of bearing part 12g (refer FIG. 4) formed in the connection part 12. As shown in FIG. Moreover, the 1st connection pipe 14 is comprised so that it can rotate from the state (in an up-down direction) substantially parallel to a floor (cleaning surface) to a state substantially perpendicular|vertical. That is, by rotating the first connecting pipe 14 with respect to the mouthpiece housing 10 around the axis 14a, the extension pipe 5 can be rotated between a state substantially parallel to the ground and a state substantially perpendicular to the ground.

The second connecting pipe 15 is configured to be rotatable in the longitudinal direction (clockwise and counterclockwise on the paper surface of FIG. 2 ) relative to the first connecting pipe 14 . Thereby, for example, it is possible to invert the extension pipe 5 from a state where the extension pipe 5 is substantially perpendicular to the ground to a state where the extension pipe 5 is substantially parallel to the ground.

In addition, power supply terminals 15 a and 15 a for supplying power are provided on the second connection pipe 15 . In addition, in electric vacuum cleaner 1 (see FIG. 1 ) of this embodiment, power supply to nozzle body 6 is performed from vacuum cleaner main body 2 through hose portion 3 , operation pipe 4 , and extension pipe 5 .

Such a suction port connector 13 can, for example, be in a state where the extension pipe 5 (refer to FIG. 1 ) is approximately perpendicular to the ground, and the extension pipe 5 can be tilted in the left-right direction (longitudinal direction), thereby allowing the operation pipe 4 (handle 4a) By twisting clockwise or counterclockwise, the nozzle main body 11 can be rotated approximately 90 degrees either clockwise or counterclockwise, and the longitudinal direction of the nozzle main body 11 becomes the moving direction for cleaning. Therefore, the suction body 6 can be moved along the wall for cleaning, or the suction body 6 can be inserted into a narrow gap for cleaning.

Fig. 3 is a top view of the mouthpiece body 6 according to the embodiment of the present invention.

As shown in FIG. 3 , the suction body 6 includes a substantially cylindrical first rotating cleaning body 20 and two substantially cylindrical second rotating cleaning bodies 30 . In the nozzle case 10 (the nozzle main body 11 ), a suction chamber Q2 having an opening serving as a suction port is formed on the lower surface (the surface facing the cleaning surface). In addition, the number of the 1st rotary cleaning body 20 and the 2nd rotary cleaning body is not limited to this.

The first rotating cleaning body 20 is disposed on the front side of the connecting portion 12 in the front-rear direction along the longitudinal direction (left-right direction) of the nozzle body 11, and is rotatably supported by the nozzle body 11.

In addition, the first rotating cleaning body 20 includes a variety of brush bodies 20a, 20b, 20c such as bristle bodies and elastic bodies with different wire diameters, densities, and hardnesses. ) in a helical configuration. In addition, in this embodiment, the case where three types of brush bodies 20a, 20b, and 20c are arranged is described as an example, but it is not limited to this, and may be two types or less, four or more types, or A structure in which a sheet member made of an elastic material such as rubber is added to be spirally arranged between the brush bodies arranged in a spiral shape can be appropriately changed.

The second rotating cleaning body 30 is a member whose diameter is smaller than that of the first rotating cleaning body 20 . The second rotary cleaning body 30 has a bristle body (raised cloth) 30b on the surface. In this embodiment, there are two second rotating cleaning bodies 30, which are respectively arranged behind the first rotating cleaning body 20 on the suction main body 11, and are arranged in the longitudinal direction of the suction main body 11 (the axial direction of the first rotating cleaning body 20). ) in the left-right direction. In other words, the second rotating cleaning body 30 is provided on both sides of the nozzle main body 11 across the flow path R (see FIG. 3 ). For example, it can be set such that one second rotating cleaning body 30 has a diameter of about half of the diameter of the first rotating cleaning body 20 and a length of about one-third of the length of the first rotating cleaning body 20 in the axial direction. As a configuration, two second rotating cleaning bodies 30 are provided on both sides of the flow path R in the nozzle main body 11 .

Moreover, each 2nd rotating cleaning body 30 has the shaft 30a parallel to the rotating shaft 21 of the 1st rotating cleaning body 20. As shown in FIG. On the outer side of the cylindrical body 30e (refer to FIG. 6 ) on the outer periphery of the shaft 30a, a cut pile (cut pile)-shaped bristle body (cut pile) formed of fine fibers is wound helically with respect to the rotation axis direction of the cylindrical body 30e. felt) 30b, and the fine fibers of the bristle body (raised cloth) 30b are inclined in the circumferential direction with respect to the cylindrical body 30e. The bristle body (fleece cloth) 30b is set in contact with a part of the suction body 6, and is arranged obliquely in the circumferential direction so that the second rotary cleaning body 30 is allowed to rotate when the suction body 6 retreats, and when the suction body 6 advances, The rotation movement of the said 2nd rotating cleaning body 30 is restricted. Holding members 30c and 30d are fixed to both end surfaces of the cylindrical body 30e. And this holding member 30c, 30d presses the edge part of the wound bristle body (raised cloth) 30b, prevents falling, and also serves as the bearing of the shaft 30a. The shaft 30a and the cylindrical body 30e are substantially concentric circles with a gap, whereby the cylindrical body 30e and the bristle body (raised cloth) 30b are rotatably supported around the shaft 30a. In this way, instead of using the motor to drive the second rotating cleaning body 30, the second rotating cleaning body 30 is supported on the suction nozzle main body 11 through the shaft 30a, and the second rotating cleaning body 30 is driven to rotate through contact with the ground, thus simplifying the cleaning process. The structure of the second rotating cleaning body 30 . Further, the microfibers of the bristle body (raised cloth) 30b are inclined in the circumferential direction relative to the cylinder body 30e in such a way that the rotation in one direction is restricted and the rotation in the other direction is restricted, so the holding members 30c and 30d use different colors, Change the shape, etc., so that the mouthpiece body 6 will not be installed in the opposite direction by mistake, and the parts corresponding to the holding parts 30c and 30d in the mouthpiece body 11 are also changed in color and shape accordingly, so that the left and right installation directions Clear, will not be installed by mistake.

Moreover, the left-right width of the 2nd rotating cleaning body 30 which includes holding members 30c and 30d is shorter than the width L1 of the storage room which attached this 2nd rotating cleaning body 30. Therefore, the 2nd rotating cleaning body 30 has a gap|interval in right and left, and can move left and right along the shaft 30a by the amount corresponding to this gap. Thereby, it is possible to prevent long and thin dust such as lint and hair on the floor from being entangled on the shaft 30a during cleaning, and even if it is entangled on the shaft 30a, it can be easily removed.

In addition, in the nozzle housing 10 , a brush body drive switch 16 is provided on the lower surface of the connection portion 12 of the suction port case 10 , and a wheel 17 is provided behind the brush body drive switch 16 (rear end of the connection portion 12 ).

The brush drive switch 16 is a switch for detecting whether the lower surface of the nozzle body 6 is in contact with the cleaning surface. The brush body drive switch 16 has a wheel 16 a provided so as to always protrude from the lower surface of the nozzle housing 10 (connection portion 12 ) by a biasing mechanism such as a spring. When it is detected that the wheel 16a is protruding and does not come into contact with the ground, the drive of the motor 40 is stopped by the circuit board 50 (control board) which will be described later. In addition, when it is detected that the wheel 16 a is pushed in and comes into contact with the ground, the electric motor 40 is driven via the circuit board 50 .

Wheels 17 are subjected to back-and-forth movement and rotational stresses operated by operation tube 4, so that the bottom surface of suction body 6 is in close contact with the cleaning surface, thereby improving the operability of suction body 6.

FIG. 4 is a top view showing a state where the upper case 11B of the mouthpiece body 6 is removed.

As shown in FIG. 4 , the nozzle body 6 is provided with a motor 40 for driving the first rotating cleaning body 20 and a circuit board 50 for controlling the motor 40 above the first rotating cleaning body 20 and the pair of second rotating cleaning bodies 30 .

The motor 40 is attached to one end side of the mouthpiece main body 11 in the longitudinal direction. Moreover, the motor 40 is arrange|positioned so that the output shaft 40a (refer FIG. 5) may be parallel to the longitudinal direction of the mouthpiece main body 11. As shown in FIG. In addition, the output shaft 40a of the motor 40 extends to one end side in the longitudinal direction, and at one end (the end on the right side in the figure) in the mouthpiece main body 11, it is connected to the first rotary cleaning shaft via a toothed belt 40b. The rotating shaft 21 (see FIG. 5 ) of the body 20 is connected.

The cover member 43 is formed of an elastic insulating member such as synthetic rubber, and one end side of the motor 40 is supported in the storage chamber Q1 by the elasticity of the cover member 43 , so vibration of the motor 40 is less likely to be transmitted to the mouthpiece housing 10 .

The circuit board 50 is attached to the other end side of the nozzle main body 11 in the longitudinal direction. In addition, the circuit board 50 is constituted by a rectangular substrate arranged so that its long side faces the longitudinal direction, and is arranged in the mouthpiece main body 11 so that the mounting surface 50 a faces upward in the vertical direction. In addition, the attachment surface 50a is not limited to facing upward in the vertical direction, and may be inclined with respect to the horizontal direction, or may be oriented in the front-rear direction (vertical direction).

Fig. 5 is an A-A sectional view of Fig. 2 .

As shown in FIG. 5 , the nozzle main body 11 of the nozzle casing 10 includes a lower casing 11A forming a lower portion so as to cover the first rotary cleaning body 20 , and an upper casing 11B covering an upper portion of the lower casing 11A. Main components of the mouthpiece housing 10 including the lower housing 11A, the upper housing 11B, and the mouthpiece connector 13 are formed of lightweight and hard materials such as synthetic resin materials such as ABS resin, thereby improving rigidity.

11 A of lower casings have the partition wall 11c which partitions the suction chamber Q2 in which the 1st rotary cleaning body 20 is arrange|positioned, and the storage chamber Q1 which accommodates the motor 40. As shown in FIG. The partition wall 11c has the curved part 11d formed along the surface of the 1st rotary cleaning body 20, and the curved part 11e formed along the surface of the 2nd rotary cleaning body 30, and the curved part 11d and the curved part 11e are formed continuously. Moreover, 11 d of bending parts extend to the substantially front-end part of the 1st rotating cleaning body 20 in cross-sectional view. The bending part 11e extends to the rear side rather than the rear end part of the 2nd rotary cleaning body 30, and the position further rear than the shaft 30a in cross-sectional view.

Upper case 11B has main body 11f integrally formed with connecting portion 12 to cover motor 40 and upper portion of circuit board 50 (see FIG. 4 ), and cover 11g arranged to overlap the outside of main body 11f. The cover part 11g is arrange|positioned over the front part and both left and right end parts of the upper case 11B (refer FIG. 2). In the present embodiment, the cushioning member 11a is held by being sandwiched between the lower case 11A and the upper case 11B (cover portion 11g).

The first rotary cleaning body 20 is fitted with a core member 22 outside the rotating shaft 21, and the core member 22 holds the brush bodies 20a, 20b, and 20c in a spiral shape. By disposing the brush body 20a, 20b, 20c in a helical shape in this way, when the first rotating cleaning body 20 rotates, the brush body 20a, 20b, 20c can be continuously hit against the ground M (refer to FIG. Vibration during operation of the rotary cleaning body 20 .

The second rotating cleaning body 30 is provided with a bristle body (fleece cloth) 30b with a substantially circular cross section on the shaft 30a via a cylinder 30e, and is disposed in the nozzle main body 11 at a position not in contact with the first rotating cleaning body 20. By making the first rotating cleaning body 20 and the second rotating cleaning body 30 approach as close as possible to the extent that the second rotating cleaning body 30 does not come into contact with the first rotating cleaning body 20, the front and rear width of the suction port main body 11 can be reduced. D (see FIG. 2 ) is shortened, and the size and weight of the mouthpiece body 6 can be reduced.

The stator 41 of the motor 40 has a cross section (outline of a cross section perpendicular to the output shaft 40a, a circular slice cross section) that is approximately elliptical (a Japanese gold coin shape). The stator 41 includes a pair of arc portions 41a and a pair of straight portions 41b connecting the arc portions 41a. In addition, the motor 40 is not limited to a substantially elliptical shape, and may be circular.

In addition, the electric motor 40 is housed in the storage chamber Q1 with the linear portion 41b inclined to the vertical axis Z1 , that is, with one arc portion 41a facing upward and forward and the other arc portion 41a facing downward and rearward.

Moreover, the electric motor 40 is arrange|positioned so that front-end part 41s of the electric motor 40 (stator 41) may be located in front rather than rear end part 20s of the 1st rotary cleaning body 20 in storage chamber Q1. Thereby, the distance from the rear end part 20s of the 1st rotary cleaning body 20 to the motor 40 which protrudes back can be shortened, and the front-back width D (refer FIG. 2) of the nozzle main body 11 can be shortened.

Moreover, the motor 40 is arrange|positioned so that the lower end part 41t of the motor 40 (stator 41) may be located below the upper end part 20t of the 1st rotary cleaning body 20 in the vertical direction in storage chamber Q1. Thereby, the distance from the upper end part 20t of the 1st rotary cleaning body 20 to the motor 40 protruding upward can be shortened, and the height (maximum height) from the cleaning surface of the nozzle main body 11 can be made low. As a result, the mouthpiece main body 11 can be easily inserted into a low gap such as a sofa or a bed.

Inside the stator 41, an armature 44 is rotatably supported. On the inner periphery of the stator 41, two magnets 45 in the shape of a shoe for excitation are fixedly attached at intervals in the circumferential direction. That is, the motor 40 of this embodiment is a 2-pole, 7-slot motor in which the number of slots is seven and two magnets 45 are provided. In addition, the number of the above-mentioned grooves is not limited to seven, and may be set to other numbers (e.g., eight).

In addition, the upper case 11B of the mouthpiece main body 11 has a shape substantially along the circular arc portion 41 a and the linear portion 41 b in the vicinity of the circular arc portion 41 a and the linear portion 41 b. Moreover, the lower case 11A of the nozzle main body 11 has the outer shell wall 11h curved downward from the storage chamber Q1 comprised by the lower case 11A and the upper case 11B in the rear of the 1st rotary cleaning body 20. This outer wall 11h extends along the curved surface (surface) of the second rotary cleaning body 30 , and extends so that the lower end 11h1 of the outer wall 11h descends to approximately the height position of the shaft 30a of the second rotary cleaning body 30 .

Fig. 6 is a B-B sectional view of Fig. 2 .

As shown in FIG. 6, the circuit board 50 is arrange|positioned so that the mounting surface may become upward in the vertical direction (vertical direction) in the storage chamber Q1. That is, the circuit board 50 is not arrange|positioned behind the 1st rotary cleaning body 20, but is arrange|positioned at the upper side rather than the upper end part 20t of the 1st rotary cleaning body 20. As shown in FIG. In addition, the circuit board 50 is fixed in the mouthpiece main body 11 so that the position is not shifted by a positioning mechanism or screws not shown. In addition, in this embodiment, the case where the circuit board 50 is arranged horizontally has been described as an example, but a configuration in which the circuit board 50 is arranged in an inclined state corresponding to the horizontal direction may also be adopted, and the circuit board 50 may also be arranged so that The circuit board 50 is arranged in a standing state so that the mounting surface of the circuit board 50 faces the front-rear direction.

The second rotating cleaning body 30 is spirally wound with a cut pile-like bristle body (raised cloth) 30b formed with fine fibers on the outside of the cylinder body 30e, and the fine fibers of the bristle body (raised cloth) 30b are relatively opposite to the cylinder body. 30e is inclined in the circumferential direction. Holding members 30c and 30d are fixed to both end surfaces of the cylindrical body 30e. These holding members 30c and 30d serve both to prevent the end of the wound raised cloth 30b from coming off and to pivotally support the shaft 30a. The front end of this raised cloth 30b has the bristle height which contacts the surface of the partition wall curved part 11e. Therefore, when the second rotary cleaning body 30 rotates, frictional resistance occurs between the bristle body (raised cloth) 30b and the surface of the partition wall curved portion 11e, but because the fine fibers are inclined in the circumferential direction with respect to the cylinder body 30e, The frictional resistance is small in the rotational direction W2 and can freely rotate, but the frictional resistance is large in the rotational direction W3 and is almost in a locked state. That is, the bristle body (raised cloth) 30b is provided in a manner to be in contact with the partition wall curved portion 11e, and is provided obliquely in the circumferential direction so that the second rotary cleaning body 30 is allowed to rotate in the rotational direction W2 when the suction port body 6 retreats. , and the rotation movement of the said 2nd rotation cleaning body 30 to the rotation direction W3 is restricted at the time of advancing.

In addition, since the bristle body (raised cloth) 30b is evenly wound around the entire circumference of the shaft 30a, the airtightness of the suction chamber Q2 can be easily maintained, and the noise leaking from the suction chamber Q2 and the noise generated by the suction chamber Q2 can be reduced. Noise is generated by the airflow passing through the gap.

In addition, as shown in Figure 3, the second rotating cleaning body 30 has a gap on the left and right, and when the suction body 6 is in contact with the ground M for cleaning, it is attracted to the central part due to suction, so as to block the gap on the central side where the flow velocity is fast. way to move, so it is possible to suppress leakage noise.

Fig. 7 is a side view of a state where the mouthpiece body according to the embodiment of the present invention is separated from the ground.

As shown in Figure 7, in the case where the suction body 6 is not in contact with the ground M, the lower end 20u of the first rotating cleaning body 20 is located at a position closer to the vertical direction than the lower end 30u of the second rotating cleaning body 30. position below. Moreover, the wheel 16a provided in the lower surface of the connection part 12 protrudes, the brush drive switch 16 turns off, and the operation|movement of the 1st rotary cleaning body 20 stops.

Fig. 8 is a side view of a state where the mouthpiece body is in contact with the ground according to the embodiment of the present invention.

As shown in FIG. 8, when the suction body 6 is in contact with the ground M, the wheel 16a is pressed in, the brush drive switch 16 is turned on, and the first rotating cleaning body 20 rotates in the W1 direction (counterclockwise in the figure). At this time, since the brush bodies 20a, 20b, 20c in the area in contact with the ground M bend, the contact amount of the brush bodies 20a, 20b, 20c with the ground M can be ensured sufficiently, and the dust on the ground M can be swept in efficiently.

Similarly, since the second rotating cleaning body 30 is in contact with the ground M, the bristle body (raised cloth) 30b in the region in contact with the ground M is deflected, so that the contact resistance between the bristle body (raised cloth) 30b and the ground M can be ensured sufficiently.

Fig. 9 is a side view of a state in which the mouthpiece body 6 is retracted according to the embodiment of the present invention.

As shown in Figure 9, the contact resistance of the bristle body (raising cloth) 30b of the second rotating cleaning body 30 and the partition wall curved portion 11e is smaller than the contact resistance of the bristle body (raising cloth) 30b and the ground M, so the second rotating cleaning The body 30 rotates in the rotation direction indicated by W3, and introduces the ground dust DS into the suction chamber Q2. 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 suction port connector 13, and then sucked by the extension tube 5, the operation tube 4, and the hose part 3. To the dust collection part 2b of the vacuum cleaner main body 2 (refer FIG. 1). The air from which dust has been removed by the dust collecting part 2b passes through the filter not shown and the electric blower 2a, and is discharged to the outside of the cleaner main body 2 (refer FIG. 1).

Fig. 10 is a side view of a state in which the mouthpiece body 6 advances according to the embodiment of the present invention.

As shown in Figure 10, the contact resistance of the bristle body (raising cloth) 30b of the second rotating cleaning body 30 and the partition wall curved portion 11e is larger than the contact resistance of the bristle body (raising cloth) 30b and the ground M, so it does not rotate and can The dust sucked into the suction chamber Q2 is prevented from being swept out to the rear of the mouthpiece main body 11 . In particular, the dust sucked into the suction chamber Q2 by the rotation of the first rotary cleaning body 20 can be suppressed from bouncing backward and flying out to the rear of the suction port main body 11 .

The sucked 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 suction port connector 13, and then sucked by the extension tube 5, the operation tube 4 and the hose part 3. To the dust collection part 2b of the vacuum cleaner main body 2 (refer FIG. 1). The air from which dust has been removed by the dust collecting part 2b passes through the filter not shown and the electric blower 2a, and is discharged to the outside of the cleaner main body 2 (refer FIG. 1).

In this way, according to the present embodiment, the second rotating cleaning body 30 in contact with the ground M is provided behind the first rotating cleaning body, whereby when the suction body 6 is retreated (when the suction body 6 is pulled back ), the second rotating cleaning body 30 rotates due to the contact resistance with the floor M, thereby being able to suck the dust behind the suction port main body 11 into the suction chamber Q2.

In addition, when the suction body 6 is advanced (when the suction body 6 is pushed forward), because the rotation of the second rotating cleaning body 30 is restricted, it is possible to prevent the suction chamber Q2 from being swept into the suction chamber Q2 by the first rotating cleaning body 20. The dust is swept out to the rear of the mouthpiece main body 11 .

Moreover, according to this Embodiment, since it is not necessary to provide a movable part as a mechanism which regulates the rotation direction of the 2nd rotation cleaning body 30, a structure is simple. In addition, there is little possibility that the restriction function will be damaged due to the entry of dust or the like.

In addition, in this embodiment, the front end of the bristle body (raised cloth) 30b of the second rotary cleaning body 30 has a bristle height that is in contact with the entire surface of the partition wall curved portion 11e, but it does not necessarily have to be in contact with the entire surface of the partition wall curved portion 11e. Surface contact, for example, as shown in Figure 11, in the inner side of partition wall curved portion 11e, protruding 35a, 35b, 35c that cross section shape is substantially triangular is provided, so that these protruding and bristle body (raising cloth) 30b front-end contacting mode is set. The height of the bristles is fixed, so that the frictional resistance is small in the rotation direction W2, and the bristle can rotate almost freely, but the frictional resistance is large in the rotation direction W3, and it is almost in a locked state.

In further detail, the rotational driving force of the second rotating cleaning body 30 is the frictional force between the bristle body (raising cloth) 30b and the ground M, and the rotational braking force of the second rotating cleaning body 30 is the friction between the bristle body (raising cloth) 30b and the protrusion 35a. , 35b, 35c friction. The fine fibers of the raised cloth 30b are inclined in the circumferential direction with respect to the cylinder 30e, and the inclined direction is from the front of the mouthpiece body 6 to the rear at the position where the bristle body (raised cloth) 30b contacts the ground. Therefore, when the suction mouth body 6 was advanced, the frictional force of the raised cloth 30b and the ground M, that is, the rotational driving force of the second rotating cleaning body 30, became smaller, and the frictional force of the bristle body (raised cloth) 30b and the protrusions 35a, 35b, 35c That is, the rotational braking force of the 2nd rotary cleaning body 30 becomes large, and the rotation of the 2nd rotary cleaning body 30 is restricted. Conversely, when the suction mouth body 6 was retreated, the frictional force of the raised cloth 30b and the ground M, that is, the rotational driving force of the second rotating cleaning body 30, became larger, and the frictional force of the bristle body (raised cloth) 30b and the protrusions 35a, 35b, 35c That is, the rotation braking force of the 2nd rotating cleaning body 30 becomes small, and the 2nd rotating cleaning body 30 rotates.

In addition, in this embodiment, when the rotation direction of the second rotating cleaning body 30 is W3, it is described that it is almost in a locked state, but it is not necessarily locked. The rotation of the body 30 is slower than when it is free, so that the dust swept into the suction chamber Q2 by the first rotating cleaning body 20 can be prevented from being swept out to the rear of the suction port main body 11 .

In addition, in this embodiment, the surface of the second rotating cleaning body 30 is provided with a bristle body (raised cloth) 30b, and the bristle body (raised cloth) 30b is provided in a manner to be in contact with a part of the suction body 6, and is arranged to The inclination in the circumferential direction allows the swivel motion when the mouthpiece body 6 moves backward, and restricts the swivel motion when it advances, but it is not limited thereto. Any component and mounting method may be used as long as they have the effect of restricting rotation in one direction and allowing rotation in the other direction during rotation with a simple structure. For example, if the bristle body (raised cloth) 30b of this embodiment is made of an elastic body, the said effect can also be acquired.

According to the present embodiment described above, the second rotating cleaning body 30 can be brought into almost constant contact with the ground when advancing with a simple structure, so that the dust inhaled from the front can be prevented from being easily discharged to the rear of the second rotating cleaning body 30 , and the second rotary cleaning body 30 rotates when retreating, the dust behind the suction port body 6 can be conveyed to the suction chamber Q2, and incomplete dust collection can be suppressed. In addition, in this embodiment, the case of using the 1st rotary cleaning body and the motor which rotationally drives this 1st rotary cleaning body was demonstrated, but the suction force which the electric blower 2a of the cleaner main body 2 generate|occur|produced drives the 1st rotary cleaning body. The same effect can also be obtained by rotating the cleaning body or not installing the first rotating cleaning body.

Explanation of reference signs

1 electric vacuum cleaner

2 Cleaner body

2a Electric blower

2b Dust collection part

6 suction body

10 Suction housing

11c, 11e, 11h Partition wall

20 The first rotating cleaning body

30 second rotating cleaning body

30a Rotary shaft

30b raised cloth

30c, 30d retaining parts

40 electric motor

50 circuit board (circuit board)

35a, 35b, 35c protrusions

M Floor (cleaning surface)

Q2 suction chamber

Q1 storage room

Claims (5)

1. a kind of sucking mouth of electric dust collector, it is characterised in that include：

The first rotary cleaning body with the rotary shaft almost parallel with the face of cleaning；

Support the suction chamber of first rotary cleaning body；With

Second rotary cleaning body, it is arranged on the rear of first rotary cleaning body, with the axle parallel with the rotary shaft, Contact with the cleaning face,

The surface of second rotary cleaning body is provided with body brush or elastomer,

At least a portion in the sucking mouth have along the body brush or the periphery of elastomer bending section, the body brush or Elastomer is arranged in the way of at least a portion with the bending section is contacted, and is obliquely arranged in circumferencial direction so that at this Sucking mouth allows the spinning movement of second rotary cleaning body when retreating, and limits second rotary cleaning body when advancing Spinning movement,

Parallel to the ground and in the state of being lifted to above vertical, first rotary cleaning body in the sucking mouth Lower end part in compared with the bottom of second rotary cleaning body more by vertical lower section position.

2. the sucking mouth of electric dust collector as claimed in claim 1, it is characterised in that：

The body brush or elastomer are arranged to, and compared with the rotational resistance when sucking mouth is retreated, make the sucking mouth Rotational resistance during advance is big.

3. the sucking mouth of electric dust collector as claimed in claim 1, it is characterised in that：

The body brush or elastomer are arranged to, it is allowed to which rotation when retreating the sucking mouth, prevention is made before the sucking mouth Rotation when entering.

4. the sucking mouth of the electric dust collector as any one of claims 1 to 3, it is characterised in that：

On the left and right directions of the sucking mouth of the electric dust collector, the color at the two ends of second rotary cleaning body and/or Shape is different.

5. a kind of electric dust collector, it is characterised in that include：

Main body of dust collector with the electric blower for producing captivation and the dust collecting part for collecting dust；And with the main body of dust collector The sucking mouth of fluid communication and the electric dust collector any one of the Claims 1 to 4 that connects.