KR100849778B1 - Electric cleaner and suction mouth body - Google Patents

Abstract

It provides the floor cleaner of the battery cleaner which improves the cleaning performance by a rotary cleaner, while suppressing cost.

When the lower end of the front cover 18 is rotated to the rear in contact with the obstacle, the rear surface of the front cover 18 is in contact with the rotary brush 21 and the lower end approaches the floor surface F, and the opening 38 N) is narrowed so that the load on the rotary cleaning chamber 22 increases, so that suction from the rotary cleaning chamber 22 side decreases, so that the amount of intake air from the suction port increases relatively, so that the rotational force of the air turbine 27a increases. Therefore, in response to the increase in the load applied to the rotary brush 21, the rotational force of the rotary brush 21 can be increased without using a motor or the like, for example, so that the rotary brush 21 can be restrained at a cost. Cleaning performance can be ensured.

Description

ELECTRICAL CLEANER AND SUCTION MOUTH BODY

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner having a drive unit having a fan that is rotatable by intake air from the intake port, and a suction port thereof.

Background Art Conventionally, as a floor brush used in a vacuum cleaner, it is known to rotate a flat air turbine by the intake air sucked from the intake port and rotate the rotation brush by this rotation. Such a floor brush is provided with the horizontally long case body which has an intake port on the upper side. In this case body, a rotary cleaning chamber for housing the rotating brush is formed in the front part, and a suction chamber having a suction port in the lower portion is formed through the rear of the rotary cleaning chamber and connected to the intake port. The drive chamber to be communicated is partitioned above the rear cleaning chamber chamber (for example, see Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-open No. Hei 9-248260 (3rd page, Fig. 1)

By the way, when cleaning the dust on the floor surface when an obstacle exists, it is preferable to approach a floor brush when the obstacle exists and to rotate at a higher speed.

However, in the above-mentioned floor brush, for example, when cleaning the floor surface when there is an obstacle, etc., if the front of the floor brush contacts the obstacle, the brush part of the rotating brush does not approach the floor surface when there is more obstacle. In addition, since the suction to the suction port from the front of the case body does not change, there is a problem that the rotational force of the rotating brush does not increase and it is not easy to sufficiently clean up when there is an obstacle.

It is also conceivable to secure the rotational force of the rotating brush by rotating the rotating brush with a motor. In this case, the floor brush becomes expensive as long as the motor is provided.

This invention is made | formed in view of this point, Comprising: It aims at providing the vacuum cleaner and its suction port which improved the cleaning performance by a rotary vacuum cleaner, suppressing cost.

The present invention provides a case having a suction port facing a surface to be cleaned, an intake port located above the suction port, a drive unit having a fan rotatable by the intake air from the intake port, and a rotating vacuum cleaner driven by the drive unit. The sieve has an opening in the lower part facing the surface to be cleaned, a rotary cleaning chamber having a rotary cleaning body in the opening, a suction chamber communicating with the suction port, a driving chamber accommodating the driving unit, a rotary cleaning chamber and a suction chamber at the lower end. And a communication path communicating with each other and a front cover which protrudes forward from the front surface of the rotary cleaning chamber and covers the front part of the opening, and whose lower end is movable backward. It is approaching the surface to be cleaned together with contacting.

In addition, the present invention is to form a substantially closed space in the to-be-contacted portion and the rotary cleaning chamber together with the front cover being moved rearward and contacting the rotary cleaning body when the front cover is in contact with the object to be contacted.

[Effects of the Invention]

According to the present invention, when the lower end of the front cover moves to the rear side, the lower end of the front cover approaches the surface to be cleaned, and the opening is narrowed to increase the load of the rotary cleaning chamber, and the intake air from the inlet port is increased. Since the amount of air is relatively increased and the rotational force of the fan increases, the rotational force of the rotary cleaning body can be increased without using a motor, for example, in response to the increase in the load participating in the rotary cleaning body. Cleaning performance by rotating cleaner can be ensured.

Further, according to the present invention, when the lower end of the front cover is moved rearward, a substantially closed space is formed between the contacted portion and the rotary cleaning chamber, so that the load of the rotary cleaning chamber is increased and the amount of intake air from the intake port is relatively increased, thereby providing a fan. Since the rotational force of the vacuum cleaner increases, the rotational force of the rotary vacuum cleaner can be increased without using a motor, for example, in response to an increase in the load applied to the rotary vacuum cleaner, so that the cleaning performance by the rotary vacuum cleaner can be reduced while suppressing the cost. Can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows the suction port of one Embodiment of this invention.

2 is a longitudinal sectional view showing a moving state of a front cover of the suction inlet.

3 is a plan view showing a portion of the suction inlet.

4 is a bottom view of the suction port.

Fig. 5 is a perspective view showing the vacuum cleaner having the suction port.

[Description of the code]

1: cleaner body 2: electric blower

9: Floor brush as suction port 11: Case body

18: Front Cover 21: Rotating Brush as Rotating Cleaner

22: rotary cleaning chamber 24: suction port

25: suction chamber 27: drive unit

27a: air turbine as a fan 28: drive chamber

38: opening 62: communication path

79: intake vent F: floor surface as the surface to be cleaned

O: obstacle as a contacted object

EMBODIMENT OF THE INVENTION Hereinafter, the structure of the vacuum cleaner of one Embodiment of this invention is demonstrated with reference to FIGS.

In FIG. 5, 1 is a cleaner main body, and this cleaner main body 1 collects the dust which sucked in with the intake air generated by the drive of the electric blower 2 accommodated in it by the dust collection pack which is not removable in figure. .

In addition, a main body suction port 3 that sucks air from the outside is opened in the cleaner main body 1. The main body suction port 3 is connected to the main body suction port 3 in a flexible and elongate substantially cylindrical hose body 4 which is flexible. At the distal end of the hose body 4, a handle operating part 5 capable of selecting an operation mode or the like of the electric blower 2 is provided. The handle operation part 5 is provided with the holding part 6 which an operator grips when cleaning, and protrudes toward the base end side, and sets the electric blower 2 in the cleaner main body 1 to several drive modes. A plurality of setting buttons 7 are provided.

In addition, an extensible, elongated substantially cylindrical extension tube 8 is connected to the distal end of the handle operating portion 5 so as to be detachably connected. In addition, the front end of the extension tube 8 is placed on, for example, a carpet on the floor of the room, and the floor brush 9 as a suction port for sucking dust on the carpet is detachably connected in series. have.

3 and 5, the floor brush 9 has a horizontally long case body 11 and a rear portion of the case body 11 in the circumferential direction and up and down with respect to the case body 11. It is provided with the connection pipe | tube part 12 which is supported so that rotational movement is possible in the direction, and the downstream side which is a rear end is connected to the extension pipe 8 successively. That is, the floor brush 9 is connected to the suction side of the electric blower 2 via the extension pipe 8, the hose body 4, and the main body suction port 3 in succession.

3 and 4, the case body 11 includes a lower case 15 with an upper side opened, an upper case 16 with a closed upper portion of the lower case 15, and each of these cases ( Intermediate case 17 attached between the 15 and 16, the front cover 18 provided in front of the upper case 16, and is sandwiched between each case (15, 16), the front cover 18 The bumper 19 is continuous from both sides to both sides of the case body 11.

In addition, in the case body 11, the lower case 15, the upper case 16, the intermediate case 17, and the front cover 18 make the rotary brush 21 serving as the cleaning member to serve as the surface to be cleaned. The rotary cleaning chamber 22 accommodated rotatably in the lower part facing the floor surface F is partitioned at the front end, and is shown in FIG. 3 which is one side of the width direction of the rear of the rotary cleaning chamber 22 behind. On the right side, the suction chamber 25 which opens in the lower end by the opening of the horizontally long rectangular suction port 24 which sucks in the dust on the floor surface F is connected in the upstream of the connection pipe part 12, and forms a partition. Further, behind the rotary cleaning chamber 22, a drive chamber 28 accommodating a drive unit 27 for driving the rotary brush 21 to rotate is formed to be airtightly partitioned with respect to the suction chamber 25. , Side transmission in which one end of the rotary brush 21 is inserted into the left side of the rotary cleaning chamber 22 shown in FIG. 29 is a forming compartment.

Here, the drive part 27 is equipped with the air turbine 27a as a fan, and the transmission part 27b which transmits the rotation of this air turbine 27a to the rotating brush 21. As shown in FIG.

In addition, the lower case 15 forms the lower part of the case body 11, and is shown in FIG. 4 of the lower case main body 31 of the rectangular plate shape which is horizontally long in plan view, and this lower case main body 31. As shown in FIG. It has the closing plate 32 detachably attached to the right side, and the protrusion part 33 which protrudes from the rear part of the lower case main body 31, and is located in the lower part of the front end side of the connection pipe part 12, and is convex in plan view. It is formed in a shape.

The lower case main body 31 is fixed to the upper case 16 and the intermediate case 17 integrally by a plurality of screws (not shown). Moreover, this lower case main body 31 is equipped with the horizontally elongated front wall part 35 on the front end side which is left shown in FIG. 1, and is substantially horizontal from the upper end of this front wall part 35. The extension part 36 is extended forward and the side wall parts 37 and 37 are continuously formed in the both sides of these front wall part 35 and the extension part 36, and these front wall part 35 and the extension part are formed. An opening 38 is formed from the front of the case body 11 to the bottom by the 36 and the side walls 37 and 37.

Then, the rotary cleaning chamber 22 is partitioned by the front cover 18 which covers the front of the front wall part 35, the extension part 36, the side wall parts 37 and 37, and the opening 38 in front. have. In addition, behind the left end of the front wall portion 35 shown in FIG. 3, the rear partition wall portion 39, which extends toward the rear of the lower case main body 31 and is bent to the right shown in FIG. 3, is provided. A side delivery chamber 29 is partitioned in the left side of the rear partition wall portion 39 and the rotary cleaning chamber 22 shown in FIG. 3.

Here, as shown in FIG. 4, the rotary brush 21 rotatably provided in the rotary cleaning chamber 22 includes an approximately elongated cylindrical brush assembly 41 as the shaft member and the brush assembly 41. 6, for example, six brush portions 42 as a cleaning member attached to the outer circumferential surface of the blade helically, and both ends of the brush assembly 41 are supported through the cylindrical bearing 43 so that the brush portion ( The distal end portion 42 of the 42 protrudes below the lower surface of the lower case 15 and is able to contact the floor surface F. FIG.

1 and 2, the brush assembly 41 includes a plurality of, for example, six attachment grooves 45 corresponding to the brush portions 42 on the outer circumferential surface thereof. These attachment grooves 45 are formed spirally along the axial direction of the brush assembly 41, and are spaced apart from each other in the circumferential direction of the brush assembly 41.

In addition, each brush part 42 protrudes and is attached to the skin attachment part 47 which is a base end attached to the attachment groove part 45 of the brush assembly 41, and is attached to this attachment part 47 in plural number. The tip is provided with the brush bristles 48 in contact with the floor surface F, and these brush bristles 48 are respectively attached to the brush assembly 41 so as to protrude in the radial direction of the brush assembly 41.

And as shown in FIG. 4, the bearing 43 is fitted to both ends of the brush assembly 41, respectively, and is rotatably supported by the side wall parts 37 and 37 which partition the rotary cleaning chamber 22, respectively. It is. Furthermore, each bearing 43 is inserted in the case body 11, and the bearing 43 on the right side shown in FIG. 4 is exposed to the outside by removing the blocking plate 32. As shown in FIG.

Moreover, the front part raising | reaping blanket 51 as a wiping member is provided in the front end part of the lower surface shown in FIG. 4 of the lower surface which opposes the floor surface F of the lower case main body 31. As shown in FIG. In addition, the lower case main body 31 is connected to the left side shown in FIG. 4 of the case body 11 while also connected to the rotary cleaning chamber 22 at the rear of the left front raising blanket 51. The communication groove 52 is provided along the width direction.

In addition, a suction port 24 is formed to be oriented to the left shown in FIG. 4 behind the front wall part 35 of the lower case main body 31, that is, behind the rotary cleaning chamber 22, and this suction port 24 is formed. Subsequently, the suction groove 54 as a horizontally long air path is located on the right side shown in FIG. 4, that is, the lower portion of the drive chamber 28, and is provided over the occlusion plate 32, and the suction port 24 is provided. Intake grooves 55 continuous from the left side in FIG. 4 to the left side and the communication groove 52 shown in FIG. 4 of the case body 11 are provided along the width direction. The suction part 56 is comprised by these suction ports 24, the suction groove 54, and the intake groove 55. As shown in FIG.

The suction groove 54 is opened downward so that the width dimension of the sum of the suction port 24 and the total width dimension is approximately equal to the axial dimension of the rotary brush 21 or the length of the rotary cleaning chamber 22. It is formed so that it may become substantially equal to the dimension of a direction.

And between the front end part of the suction part 56 and the rear end part of the rotary cleaning chamber 22, the partition wall part 61 which partitions the rotary cleaning chamber 22 and the suction part 56 is formed. In this partition wall portion 61, a plurality of, for example, five communication paths 62, which communicate with each other through the lower end portions of the rotary cleaning chamber 22 and the suction part 56, are spaced apart from each other in the width direction of the case body 11. Are installed respectively. These communication paths 62 are formed long horizontally, for example, and are located between the rear part of the rotary cleaning chamber 22, the suction port 24 of the suction part 56, and the front part of the suction groove 54. Are arranged respectively. Therefore, the partition wall 61 between each of these communication paths 62 is formed in the shape of a horizontally long convex rib, and a carpet or the like has a suction port 24, a suction groove 54, or a communication path 62. Prevents clinging to

In addition, behind the suction part 56 of the lower case main body 31, the rising blanket 64 as an elongate cleaning body in the width direction of the case body 11 is provided. This forming blanket 64 protrudes slightly below the lower surface of the lower case 15.

In addition, in the center region in the width direction of the case body 11 behind the forming blanket 64, the floor brush 9 may be lifted from the floor surface F through the suction side of the connecting pipe part 12. The back suction port 65 for the leak which sucks in air only and stops rotation of the air turbine 27a of the drive part 27, ie, rotation of the rotary brush 21, is formed.

The occlusion plate 32 is attached to the lower side of the side transfer chamber 29 and accommodates the bearing 43 at one end of the rotary brush 21 in a detachable manner with the upper case 16. Detachable with respect to the lower case main body 31 by rotating the mounting member 66 continuously in a rectangular length from the front end to the rear end of one side of the rotary cleaning chamber 22 of the lower case main body 31. It becomes possible.

Moreover, the front part raising blanket 71 is provided in the position corresponding to the front part raising blanket 51 in the front-back direction of the case body 11 in the front part of the lower surface of the blocking plate 32. As shown in FIG. Furthermore, in the obstruction plate 32, the figure of the case body 11 is shown from the lower end of the rotary cleaning chamber 22 in front of the mounting member 66 corresponding to the communication groove 52 in the front-rear direction of the case body 11. The communication groove 72 which opened the lower end part continuously in the right part shown in 4 is provided along the width direction.

And the protrusion part 33 protrudes so that the width may become narrow toward the front end from the rear part of the center area of the width direction of the lower case main body 31, and rotates the both ends of the wheel 74 to the front end of this protrusion part 33. As shown in FIG. The notch recess 75 which supports it is formed. In addition, in front of the notch recess 75 of the lower surface of the projection part 33, the rear part raising | reaping blanket 76 as a rear part cleaning body continuous to both sides of the rear part suction port 65 is provided. In addition, a fitting groove 77 into which the distal end of the connecting tube portion 12 fits is provided on the surface of the protrusion 33.

1 and 3, the upper case 16 is formed in a horizontally long rectangular plate shape corresponding to the shape of the lower case 15, and the front end portion is bent downward to lower the case 15. The upper end part of the front cover 18 is supported by the front end part of the front end part so that rotation movement is possible.

Furthermore, in the lower part of this upper case 16, the annular rib 78 protrudes downward in the planar view which fits on the upper part of the intermediate case 17, and the intermediate case of this rib 78 ( The drive chamber 28 is partitioned by fitting to the upper end of 17). Then, on the right side shown in Fig. 3 of the upper part and the rear part of the upper case 16, that is, in the widthwise outer side of the rear side of the driving chamber 28, a plurality of small diameter round holes communicating with the driving chamber 28 are provided. The inlet port 79 formed by the opening is formed.

In addition, the upper case 16 has a rear portion of the central region in the width direction protruding upward from the proximal end of the protruding portion 33 of the lower case 15, and is fitted to the outer circumference of the front end side of the connecting pipe portion 12. I'm customizing.

In addition, as shown in FIGS. 1 and 3, the intermediate case 17 has a right side shown in FIG. 3 of the drive chamber 28, that is, an intake chamber 25, as shown in FIG. Intake chamber wall portion 82 which is partitioned above the top, and a turbine chamber in which an upper end portion is in contact with the rib 78 of the upper case 16 in succession to the intake chamber wall portion 82 to accommodate the air turbine 27a ( The turbine chamber wall part which partitions the 83 in the drive chamber 28, and divides the introduction air path 84 which introduces the intake air from the intake port 79 into the turbine chamber 83, and flows to the connection pipe part 12 ( 85, a portion in which the intake chamber 81 and the turbine chamber 83 are located, and a transmission chamber 88 in which the transmission portion 27b is located, are located in the drive chamber 28. To compartmentalize.

The intake chamber wall portion 82 is formed in a rectangular shape that is horizontally long in plan view and is positioned along a substantially horizontal direction, and the front end of the portion adjacent to the turbine chamber wall portion 85 is directed downward toward the introduction air passage 84. It is formed in a concave state.

In addition, the turbine chamber wall portion 85 protrudes downward from the center of the substantially user cylindrical wall body portion 91 and the bottom portion of the wall body portion 91 to rotatably support the air turbine 27a. The air passage partition which protrudes downward from the front of the axial support part 92 and the axial support part 92 of the bottom part of the wall main-body part 91, and partitions the introduction air path 84 around the axial support part 92. It has a portion 93.

The wall main body 91 is spaced apart from the outer periphery of the air turbine 27a through a slight gap, and the upper end portion contacts the rib 78 of the upper case 16 so that the turbine chamber 83 is moved to the upper case. By partitioning with (16), the front end of the right side shown in FIG. 3 is continued to the front end of the intake chamber wall part 82. As shown in FIG. For this reason, the introduction airway 84 expands and opens toward the intake chamber 81 at the right side of the air teebin 27a.

In addition, the shaft support part 92 is formed in the substantially cylindrical shape provided in the center with the communication hole 95 which connects the turbine chamber 83 and the transmission chamber 88 to the center as shown in FIG. . Furthermore, the lower end part of the back of this shaft support part 92 protrudes toward the lower side of the intermediate case rib 96, and the lower end part of this intermediate case rib 96 raises the upper case 64 of the lower case 15. The rear suction port 65 side and the drive chamber 28 are hermetically divided by these ribs 96 and 97 by fitting to the upper end of the lower case rib 97 protruding upward from the position of.

In addition, the air passage partition 93 is inclined upward so as to have a half moon shape convex upward from the lower end of the shaft support 92, and continuous to the bottom portion of the turbine chamber wall 85 and the intake chamber wall 82. Thus, the front end portion is in contact with the upper end portion of the front wall portion 35 of the lower case 15.

Here, as shown in FIG. 1, the air turbine 27a accommodated in the turbine chamber 83 of the drive chamber 28 is a flat turbine main body 101 of planar view, and this turbine main body 101. As shown in FIG. It has a rotating shaft 102 provided integrally, and is located in the substantially center of the width direction of the case body 11 of the floor brush 9, as shown in FIG.

The turbine main body 101 is a part accommodated in the turbine chamber 83, and as shown in FIG. 1, the disk-shaped ceiling plate 104 and the turbine blade | bulb which protruded in the lower part of this ceiling plate 104 ( 105). These turbine blades 105 receive the intake air passing through the introduction air passage 84 to rotate the air turbine 27a, and are directed toward the outer edge of the ceiling plate 104 from the central axis side of the turbine main body 101. It is formed in the half-moon shape curved in the circumferential direction, and is spaced at substantially equal intervals from each other in the circumferential direction of the turbine main body 101, and the front-end part faces the introduction wind path 84.

In addition, the rotation shaft 102 is inserted through the shaft support portion 92, and the fall prevention rings 106 and 107 attached to the outer peripheral surfaces of two upper and lower portions are respectively provided on the stepped portions 108 and 109 provided in the shaft support portion 92. By engaging, the intermediate case 17 is prevented from being pulled out.

In addition, the transmission chamber 88 is partitioned on the left side of the case body 11 shown in FIG. 3, that is, on the side of the suction chamber 25, and the bearing 43 on the left side shown in FIG. 3 of the rotary brush 21. It is inserted inside.

And the transmission part 27b accommodated in this transmission chamber 88 is what is called a gearbox, and it is located in the side of the suction port 24, as shown to FIG. 1 and FIG. 3, and the transmission part main body 111 as a gear accommodation part. And a tension pulley 112 and a driving pulley 113 protruding downward from the transmission part main body 111 and rotating in the horizontal direction, and protruding from the transmission part main body 111 on the left side shown in FIG. 3. A belt 115 is wound between the rotation shaft 102 of the air turbine 27a and the pulleys 112 and 113, which has a transmission pulley 114 that rotates in the vertical direction, and furthermore, the transmission pulley 114 and the rotation brush. The transmission belt 116 is wound between the bearings 43 of 21.

In the transmission unit main body 111, the rotational force and the rotational direction of the pulleys 112 and 113 to which the rotational force of the air turbine 27a is transmitted through the belt 115 are converted into the rotational force and the rotational direction of the transmission pulley 114. An inclined gear and the like not shown are provided.

In addition, the tension pulley 112 gives a predetermined tension to the belt 115.

In addition, the drive pulley 113 transmits the rotational force from the air turbine 27a to a predetermined gear provided in the transmission unit main body 111.

The transfer pulley 114 transmits the rotational force of the air turbine 27a transmitted from the drive pulley 113 to the rotary brush 21.

In addition, the front cover 18 is molded from a synthetic resin having some flexibility, and as shown in FIGS. 1 to 3, the front cover main body 121 and the front cover main body 121 that are horizontally long. It has a protrusion installation part 122 protruded toward the rear from the upper end part of the support part, and is supported by the rotational movement shaft 123 provided along the width direction at the front-end part of the upper case 16 so that rotational movement was possible in the front-back direction. And the front cover 18 has the lower end side protruding forward from the front surface of the lower case 15 in a normal state, for example, the floor brush 9 to the obstacle O as a to-be-contacted object, such as a wall. When the front of the) collides, the lower end rotates backward.

The front cover main body 121 is formed in the convex cross-sectional arc shape toward the front, and partitions the front side of the rotary cleaning chamber 22. In addition, the front cover main body 121 has a lower end portion located near the central axis of the brush assembly 41 of the rotary brush 21, and in the state in which it rotates backward, as shown in FIG. Close to F), the tip of the brush bristles 48 of the brush section 42 of the rotary brush 21 comes into contact with the rear surface. Furthermore, in the front part of the front cover main body 121, the recessed part 124 of cross-sectional recessed delivery shape is provided in the upper and lower sides along the width direction of the case body 11. As shown in FIG.

In addition, a plurality of cover ribs 125 for reinforcement are provided on the rear side of the front cover main body 121 along the front and rear directions. These cover ribs 125 are spaced apart from each other in the width direction of the case body 11.

The projecting portion 122 is formed in a rectangular shape in plan view, and is spaced apart from each other in the width direction of the case body 11, and between the projecting portion 122 of the lower case 15. The fitting piece which is not shown in figure which protrudes further forward from the extension part 36 fits, respectively.

In addition, as shown in FIG. 4, the rear end portion of the protruding portion 122 has a front cover 18 in a notch fitting recess 127 formed notchally above the distal end of the extension portion 36. Is fitted with. In the lower part of the protruding portion 122, a circular fitting recess 128 is formed, as viewed from a cross section in which the rotary shaft 123 fits, and on the rear end side of the fitting recess 128. At the edge, an inclined surface portion 129 inclined upward toward the rear is provided. The inclined surface portion 129 is in sliding contact with the front end portion of the extension portion 36 when the front cover 18 rotates backward to close the gap in the upper portion of the rotary cleaning chamber 22. On the other hand, the inclined surface portion 129 regulates the rotational movement angle behind the front cover 18 by contacting the front surface of the extension portion 36 while the front cover 18 is rotated to the maximum at the rear. Therefore, the inclination angle is appropriately set in accordance with the rotational movement amount of the front cover 18.

In addition, the rotational movement shaft 123 is formed of a member such as metal, for example, is inserted into each fitting piece, and is fitted into the fitting recess 128 of the protruding and mounting portion 122 from below. Is attached as In addition, torsion screws (not shown) are attached to positions corresponding to the fitting pieces located at both ends of the rotary shaft 123, and these torsion screws are applied to the front cover 18 in the forward direction. Doing.

The bumper 19 is provided for cushioning when the floor brush 9 collides with a wall or the like, for example, by a soft synthetic resin or the like.

In addition, the rotary cleaning chamber 22 and the suction chamber 25 are provided adjacent to each other so that the dust which the rotary brush 21 scraped up does not adhere to the floor surface F again.

In addition, the rotary cleaning chamber 22 and the drive chamber 28 are provided adjacent to each other in order to compact the case body 11.

Next, the cleaning operation according to the above embodiment will be described.

First, the worker connects the hose body 4, the extension pipe 8, and the floor brush 9 successively to the main body suction port 3 of the cleaner main body 1 in sequence.

In addition, when the operator pulls out the power cord not shown from the vacuum cleaner body 1 and connects it to an outlet not shown, the gripper 6 is gripped and the predetermined setting button 7 is operated. The electric blower 2 is driven in a predetermined operation mode in accordance with the operation mode set by 7).

Subsequently, the worker grips the holding part 6 and runs the floor brush 9 back and forth on the floor surface F to suck in the floor surface F dust.

At this time, the raising blanket 64 and the rear raising blanket 76 closely adhere to the floor surface F, whereby the periphery of the rear suction port 65 is blocked, and air is sucked from the suction port 24 below the floor brush 9. It sucks in and air is sucked in from the inlet port 79 above the floor brush 9.

The negative pressure of suction from the suction port 24 is averaged by the communication grooves 52, 72, the suction groove 54, and the like, and the suction port 24 also comes from these communication grooves 52, 72, the suction groove 54, and the like. Through) dust is sucked in with the air.

At the same time, the air sucked in from the intake port 79 flows into the intake airway 84 through the intake chamber 81, and the air flow rate can be speeded up by the inlet airway 84 whose diameter is reduced, while the connecting pipe portion. When passing through (12), it corresponds to the turbine blade 105, and rotates the air turbine 27a.

The rotation of the rotating shaft 102 rotated by the rotation of the air turbine 27a is transmitted to the drive pulley 113 through the belt 115, and the rotation direction or the like is changed in the transmission portion 27b, thereby transferring the pulley. It is output from 114, and the output of this transmission pulley 114 is transmitted to the rotating brush 21 through the transmission belt 116, and the rotating brush 21 rotates in a predetermined direction.

By the rotation of the rotary brush 21, the tip of the brush bristles 48 of the brush portion 42 comes in contact with the floor surface F to scrape off the dust on the floor surface F. As shown in FIG.

The scraped up dust is sucked together with the air into the suction groove 54 and the suction port 24 through the communication path 62.

In addition, when the front side of the floor brush 9 is pressed against obstacles O, such as a wall, as shown in FIG. 2, the lower end side of the front cover 18 is rearward centering on the rotating shaft 123. As shown in FIG. By rotating in the direction, the brush bristles 48 of the brush portion 42 of the floor brush 9 approach the floor surface F having the obstacles O, and the front surface of the front cover 18 is lower case 15. And the front surface of the upper case 16 coincide with each other, and the rear surface of the front cover 18 rotates in contact with the tip of the brush bristles 48 of the brush portion 42 of the rotary brush 21. Load the brush 21.

At this time, the upper and lower portions of the front cover 18 in contact with the obstruction (O) is substantially hermetically partitioned, the obstruction (O) and the rotary cleaning chamber 22 is formed in a substantially closed space, thereby the case body 11 Since the intake air volume from the front of the inlet port 24 side decreases, the intake air volume from the inlet port 79 increases relatively, and the rotational force of the air turbine 27a, that is, the rotational force of the rotary brush 21 rises, Scrape the dirt off the obstructions (O).

At the same time, the inclined surface portion 129 is in sliding contact with the front end portion of the extension portion 36, and always closes the gap above the rotary cleaning chamber 22.

In addition, when the front side of the floor brush 9 is separated from the obstacle O, as shown in the virtual line of FIG. 2, the lower end side of the front cover 18 rotates by the force of the torsion screw. It rotates forward about the axis 123 and returns.

At this time, the rear end portion of the protruding portion 122 of the front cover 18 fits into the cut-out fitting recess 127 of the extension portion 36, and the protruding portion is attached to the lower end of the upper case 16. The surface in front of the rotary shaft 123 of the 122 in contact with no gap to maintain the front cover 18.

In addition, when the floor brush 9 is lifted up from the floor surface F, the rear suction port 65 is opened, so that air is sucked in both the suction port 24 and the rear suction port 65, whereby the inlet port 79 The amount of intake air flow from () decreases relatively, and the rotation of the air turbine 27a, that is, the rotary brush 21, stops.

And the dust sucked in with the air from the floor brush 9 passes through the floor brush 9, the extension pipe 8, and the hose body 4 one by one, and then the main body suction port 3 of the vacuum cleaner body 1 ), And is collected in the dust collection pack housed in the cleaner body (1).

The dust collected in the air is taken in by the electric blower 2 to become exhaust air, and is exhausted to the outside from an exhaust port not shown in the cleaner main body 1.

As described above, according to the above embodiment, the front end of the case body 11 of the floor brush 9 is pressed against the obstacle O so that the lower end portion of the front cover 18 is in contact with the obstacle O to the rear. At the time of the rotational movement, the rear surface of the front cover 18 contacts the rotary brush 21, and the lower end approaches the floor surface F, and the opening 38 is narrowed so that the obstacle O and the rotary cleaning chamber ( By forming the substantially closed space at 22, the load on the rotary vacuum chamber 22 is increased and the suction on the rotary vacuum chamber 22 side is reduced, so that the amount of intake air from the intake port 79 is relatively increased, whereby the air turbine ( Since the rotational force of 27a) increases, the rotational force of the rotary brush 21 can be increased without using a motor, for example, in response to an increase in the load participating in the rotary brush 21, thereby suppressing costs. While cleaning performance by the rotary brush 21 can be secured.

Moreover, since it is not necessary to use a motor or the like for the floor brush 9, an increase in the weight of the floor brush 9 can be prevented, and the operability of the floor brush 9 by the operator can be improved.

Further, when the front side of the floor brush 9 is pressed firmly against the obstacle O, the lower end of the front cover 18 is rotated backward, so that the tip of the brush bristles 48 of the rotary brush 21 has the obstacle ( As it becomes close to the floor surface F with O), the dust on the floor surface F at the time of this obstacle O is scraped up by the brush bristles 48 of the rotating brush 21, and the suction port 24 Can be inhaled.

Moreover, in the said one Embodiment, in the inlet port 24 in the lower part of the drive chamber 28 which accommodated the transmission part 27b of the drive part 27 in the side of the suction chamber 25 which communicates with the inlet port 24 in the side. Subsequently, the suction groove 54 with the lower portion opened therethrough was configured.

Here, in such a floor brush 9, the rotary cleaning chamber 22 and the suction chamber 25 are provided adjacently in order to prevent reattachment to the floor surface F of the dust which the rotary brush 21 scraped up. In addition, since the drive chamber 28 and the rotary cleaning chamber 22 are provided adjacently in order to compact the case body 11, the suction chamber 25 and the drive chamber 28 are the case body. Side by side in the width direction of (11), on the other hand, since it is preferable not to provide the suction port 24 in the drive chamber 28 so as not to suck in dust in order to protect the drive part 27, the suction port 24 Cannot be biased in the width direction of the case body 11, and it is not easy to suck dust on the floor surface F located on the side opposite to the suction port 24 of the case body 11. By providing the suction groove 54 as well, the lower side of the drive chamber 28 where the suction port 24 is not located. By preventing the lowering of the negative pressure and preventing the difference in the distribution of the negative pressure, the lower portion of the drive chamber 28 is effectively used by the suction groove 54, so that the width of the air passage leading to the suction port 24 is used. Secured in the lower portion of the rotary brush 21, the dust scraped up from the floor surface F can be reliably sucked into the suction port 24 through the suction groove 54, so that the suction efficiency can be improved.

Particularly, the size of the width of the suction port 24 and the suction groove 54 is approximately equal to the axial dimension of the rotary brush 21, whereby the rotary brush 21 is scraped up from the floor surface F. Can be reliably sucked into the suction port 24 from the rear of the entire rotary brush 21.

Then, the intake groove 55 communicating with the intake port 24 and the side of the case body 11 in a side portion on the side opposite to the intake groove 54 of the intake port 24 is used for the case body 11. Dust on the lateral floor surface F can also be sucked into the intake port 24 through the intake groove 55, so that the suction efficiency can be further improved.

Further, by providing the communication grooves 52 and 72 which are connected to both sides of the case body 11 in both sides of the rotary cleaning chamber 22, respectively, the floor surfaces of both sides of the case body 11 ( The dust on F) can also be sucked through the communication grooves 52 and 72, so that the dust collecting efficiency can be further improved.

Moreover, since the air on the side of the case body 11 can be sucked from these intake grooves 55 and the communication grooves 52 and 72, the floor brush 9 is more than necessary to the floor surface F, such as a carpet. It can certainly prevent sticking.

In addition, by providing a communication path 62 having a lower portion opened through the rear portion of the rotary cleaning chamber 22 and the suction port 24 and the suction groove 54, the case body is sucked from the suction port 24. The dust on the floor surface F in front of (11) can also be sucked in.

And by providing the inlet port 79 above or behind the case body 11, even if the floor brush 9 is contacted with the obstacle O etc., the inlet port 79 is not blocked and can be inhaled certainly.

In addition, when the floor brush 9 is grounded to the floor surface F, the bottom suction port 65 opened when the floor brush 9 is separated from the floor surface F is opened. When the floor brush 9 is grounded to the floor surface F, the air is sucked in only from the inlet port 24 at the bottom of the case body 11 so that the floor brush 9 is grounded. The air volume is relatively increased, and the air turbine 27a, that is, the rotary brush 21 can be reliably rotated, and when the floor brush 9 is separated from the floor surface F, the lower side of the case body 11 Since air is sucked in from the inlet port 24 and the rear inlet port 65, the amount of intake air from the inlet port 79 is relatively reduced, so that the rotation of the air turbine 27a, that is, the rotary brush 21 can be reliably prevented. have.

In addition, in the state that the front cover 18 is rotated forward, the opening amount of the opening 38 is increased, and the front cover 18 is moved forward of the rotational shaft 123 of the protruding portion 122 by the force of the torsion screw. The upper surface of the rotary cleaning chamber 22 is pressed against the upper case 16 and the rear end of the protruding mounting portion 122 is fitted into the cut-out fitting recess 127 and pressed downward. Since it is ensured, the suction amount from the front of the case body 11 by the suction from the suction port 24 can be ensured.

Then, when the front cover 18 rotates backward, the inclined surface portion 129 of the front cover 18 is in sliding contact with the front end portion of the extension portion 36 so that the airtightness of the upper portion of the rotary cleaning chamber 22 is improved. By ensuring, the closed space can be formed more surely.

In addition, by placing the air turbine 27a at approximately the center of the case body 11 in the width direction, the size of the air turbine 27a can be ensured among the limited case body 11, and the rotary brush ( 21) can secure the rotational force.

In addition, in the said one Embodiment, if the inlet port 79 is a position other than the upper side of the inlet port 24 and the front of the case body 11, it can be provided in arbitrary positions.

The vacuum cleaner is not limited to a canister vacuum cleaner, and can be used as the upright type or the handy type in which the floor brush 9 is formed directly on the lower surface of the cleaner body 1.

The present invention is used, for example, for an inlet body of a vacuum cleaner having a drive unit having a fan rotatable by intake air from the intake port, a vacuum cleaner having the same, and the like.

Claims (3)

A case body including a suction port facing the surface to be cleaned, an intake port located above the suction port, a drive unit having a fan rotatable by the intake air from the intake port, and a rotary cleaning body driven by the drive unit; , The case body, In addition to having an opening in the lower portion opposite to the surface to be cleaned, a rotary cleaning chamber having the rotary cleaning body in the opening, A suction chamber communicating with the suction port, A drive chamber accommodating the drive unit; A communication passage communicating with the rotary cleaning chamber and the suction chamber at a lower end thereof; A front cover protruding forward from the front surface of the rotary cleaning chamber to cover the front part of the opening, and having a lower end movable backward; The front cover is the suction inlet of the vacuum cleaner, characterized in that in contact with the rotary cleaning body at the time of movement of the lower end to approach the surface to be cleaned. A case body including a suction port facing the surface to be cleaned, an intake port located above the suction port, a drive unit having a fan rotatable by the intake air from the intake port, and a rotary cleaning body driven by the drive unit; , The case body, In addition to having an opening in the lower portion opposite to the surface to be cleaned, a rotary cleaning chamber having the rotary cleaning body in the opening, A suction chamber communicating with the suction port, A drive chamber accommodating the drive unit; A communication passage communicating with the rotary cleaning chamber and the suction chamber at a lower end thereof; A front cover protruding forward from the front surface of the rotary cleaning chamber to cover the front part of the opening, and having a lower end movable backward; The front cover suctions the vacuum cleaner, characterized in that the lower end portion moves rearward in contact with the object to be contacted and contacts the rotary cleaning body and forms a substantially closed space in the contacted part and the rotary cleaning chamber. sphere. The vacuum cleaner body according to claim 1 or 2, further comprising: a cleaner body accommodating an electric blower; And a suction port connected to the suction side of the electric blower in series.

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