JP2001169978A - Vacuum cleaner and its suction port body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of improving dust suction efficiency by sucking dust even from an intake port for rotating a rotary cleaning body by simple constitution. SOLUTION: A buffer body 23 formed of an elastic member is provided along a peripheral surface from the front surface of a case body 24 for sectioning a suction chamber 31 housing the rotary cleaning body 121 where a suction port 30 is opened on a lower surface. The buffer body 23 is provided with a planar eaves part 41 projected forwards from the front surface of a lower case 21 successively to an upper case 22. On the lower surface of the eaves part 41, a column rib part 42 abuts on the front side edge of the lower case 21 for opening the intake port 45 for blowing an intake flow to the rotary cleaning body 121 is provided. On the front side edge of the eaves part 41, a planar flow straightening plate 41a in a wall shape downwards whose lower end is positioned above the lower surface of the case body 24 facing a floor surface for opening the intake port 45 to a front side lower part is provided. The dust is sucked from a front side as well, the raking property of the dust by the rotary cleaning body 121 is improved by a cyclone intake flow and the dust suction efficiency is improved. Walls and furniture are not damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner for rotating a rotary cleaning body by an air flow from an air inlet, and a suction port body thereof.

[0002]

2. Description of the Related Art Conventionally, for example, a configuration described in Japanese Patent Application Laid-Open No. H11-1970065 is known as a suction port of this type of vacuum cleaner.

The suction port of the vacuum cleaner described in Japanese Patent Application Laid-Open No. H11-1970065 has a suction chamber having a suction port formed on the lower surface thereof, and the suction chamber communicates with the suction chamber on the upper front surface. An opening case body is provided, and in the suction chamber of the case body, a rotary cleaning body having a blade serving as a cleaning member that sweeps out dust from a surface to be cleaned and blows an air flow from an air inlet can be rotated by the air flow. It is arranged.

[0004]

However, in the suction opening of the vacuum cleaner described in Japanese Patent Application Laid-Open No. H11-1970065, air is suctioned from the suction opening formed in the upper part of the case body. There is a problem in that it is difficult to improve the dust suction efficiency because the amount of the suction amount from the air inlet out of the total suction amount sucked by the drive of the electric blower does not contribute to the suction of dust.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a vacuum cleaner and a suction port body having a simple structure that improves dust collection efficiency by sucking dust from a suction port for rotating a rotary cleaning body. The purpose is to provide.

[0006]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a suction port body having a suction port opened on a surface facing a surface to be cleaned, and a suction port located above and forward of the opening position of the suction port. And a cleaning member which is rotatably provided facing the suction port on the case body, and which sweeps dust from the surface to be cleaned.The suction air from the suction port is blown against the cleaning member. A rotating cleaning body that rotates in the direction of a wall, and is provided to protrude downward from an upper opening edge of the suction port in a wall shape, and is located forward of a lower opening edge of the suction port and a lower end thereof is higher than an opening position of the suction port. And a rectifying plate located at the position (1).

[0007] From the upper opening edge of the intake port formed above and forward of the opening position of the intake port in the case body that opens the intake port, it is positioned forward and downward from the lower opening edge of the intake port. In order to provide a straightening plate having a wall shape and a lower end positioned above the opening position of the suction port, the suction port is substantially directed to the surface to be cleaned by the straightening plate, and when suction is performed from the suction port, the front side of the case body. Dust on the surface to be cleaned is also sucked in, and it absorbs the dust sufficiently to the wall, improving the dust absorption efficiency.The outer surface, which is the front side of the current plate, is planar, and the edges damage the walls and furniture. There is no fear.

The suction body of the vacuum cleaner according to claim 2 is
In the suction opening of the vacuum cleaner according to claim 1, the straightening plate is formed of an elastic member.

Since the current plate is formed of an elastic member, the current plate is prevented from being damaged even when it comes into contact with, for example, a wall or furniture.

According to a third aspect of the present invention, there is provided a vacuum cleaner having a vacuum cleaner main body and a suction port of the vacuum cleaner according to the first or second aspect connected to the vacuum cleaner main body.

[0011] When the air is taken in from the air inlet, the dust on the surface to be cleaned located on the front side of the case body is sucked and sufficiently sucked up to the side of the wall. Since the suction port of the vacuum cleaner according to the first or second aspect of the present invention is provided to prevent such damage, the cleaning property is improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a vacuum cleaner according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 7, reference numeral 1 denotes a cleaner main body. The cleaner main body 1 has a lower body case 2a having an open upper surface, and an upper body case 2b for closing the rear upper surface of the lower body case 2a. And a main body case 2 having a front upper surface opened by being joined to and sandwiching a bumper 3 at a peripheral edge including the above. The cleaner body 1 rotatably supports a lid 4 that closes the upper surface of the front side of the body case 2 so as to be openable and closable.

The main body case 2 is provided with a rotatable swivel wheel (not shown) on the front lower surface in the traveling direction, and a large-diameter driven wheel 6 is rotatably provided on the rear side surface of the main body case 2. The main body 1 can travel on a floor surface to be cleaned with the turning wheel and the driven wheel 6. Further, a handle 7 slidable in a vertical direction is provided at an upper portion of the main body case 2. On the bottom surface of the main body case 2, a notch (not shown) is formed to open in a concave shape toward the front and open upward when the rear surface of the main body case 2 is in a standing state so as to face the floor surface. Is provided.

An electric blower chamber for accommodating an electric blower (not shown) is formed in the rear side of the cleaner body 1, and communicates with the suction side of the electric blower and is open at the top to open the lid 4. A dust collecting chamber (not shown) which is opened / closed and accommodates a dust collecting filter is defined on the front side. Further, on the front side of the cleaner body 1, there is formed a connection port 9 which opens toward the dust collection chamber and to which a hose 8 is detachably connected.

The hose 8 has a flexible hose body 11.
A connecting pipe 12 provided at one end of the hose body 11 and removably inserted and connected to the connection port 9 of the cleaner body 1;
A grip 15 is provided at the other end of the hose body 11 and is connected to a suction port body 14 via an extension pipe 13. The grip 15 is provided with operating means 17 having various switches 16, 16 for setting and operating the driving state of the electric blower.

Further, the extension tube 13 is detachably engaged with the hooking recess of the main body case 2 so that the extension tube 13 can be detachably engaged with the main body case 2 even when the hose 8 and the suction port main body 14 are connected. A holding hook portion 18 is provided.

On the other hand, as shown in FIGS. 1 and 6, the suction port main body 14 has a rectangular shape which is oblong in the running direction which is the front-back direction, and is made of acrylonitrile-butadiene-styrene (AB).
S) Lower case with open upper surface made of synthetic resin such as resin
21 and an upper case 22 that covers the upper opening at the upper part of the lower case 21 and opens the lower surface of the same material, and a soft member buffer 23 along the peripheral surface including the front surfaces of the lower case 21 and the upper case 22. And has a convex-shaped case body 24 whose rear substantially approximate center protrudes rearward.

The lower case 21 has a rib lower part 25a substantially vertically on the upper surface, the upper case 22 has a rib upper part 25b on the lower surface substantially perpendicular to the lower end edge joined to the rib lower part 25a, and the case body 24 has The rib lower part 25a and the rib upper part 25b are formed in a convex shape with a horizontally long rectangular suction part 26 and a pair of housing parts 27, 27 projecting rearward substantially at the center of the rear part of the suction part 26. In the suction part 26, a suction chamber 31, which is horizontally long on the front side and has an opening 30 formed in the lower surface of the lower case 21, is formed by a rib lower part 25 a and a rib upper part 25 b with respect to the housing parts 27, 27. The compartment is formed. Further, a lower surface of one end of the suction chamber 31 of the case body 24 is opened downward, and a closing plate 32 is detachably attached to the opening with a mounting tool 33. At substantially the center of the rib lower part 25a and the rib upper part 25b, notch holding concave parts 35a and 35b formed to face each other are provided, respectively.

Further, the lower case 21 has a suction lower portion 21a forming the lower surface of the suction portion 26, and a pair of housing lower portions 21b provided integrally with the rear portion of the suction lower portion 21a and forming the lower surfaces of the housing portions 27, 27. , 21b are formed in a convex shape. At the front of the suction lower portion 21a, a plurality of guide inclined lower surfaces 37, for example, two concave portions, which are deeper toward the front, are provided.
An intake lower concave portion 37 having a is provided.

The upper case 22 has a case lid 22a having an arc-shaped cross section which is detachably attached to the lower case 21 so as to cover substantially the upper surface of the suction portion 26, and a flange is formed integrally with a rear portion of the case lid 22a. A case cover 22b that covers the lower housing 21b of the lower case 21 and forms the housing 27.
And are formed in a convex shape.

Further, the buffer 23 is formed of an elastic member such as rubber, for example, and covers substantially the upper surface on the front side of the suction chamber 31 of the suction portion 26, protrudes forward from the front surface of the lower case 21, and has a rear edge of the upper case 22 at the rear edge. A flat eave portion 41 having an engaging claw portion 40 engaging with the front side edge and being continuous with the front side edge of the upper case 22 is provided. On the lower surface of the eave portion 41, there is integrally provided a support rib portion 42 which is provided integrally and whose lower end edge is in contact with the front side edge of the lower case 21. Further, on both sides of the eave portion 41, a band-shaped protective cover portion 43 sandwiched between the lower case 21 and the upper case 22 and covering the peripheral surface of the case body 24 from the side surface to the rear portion of the case body 24 is provided integrally. I have. Further, on the front side edge of the eave portion 41, it protrudes downward in a wall shape, and is continuous with the protective cover portion 43 on the side portion which is the longitudinal end of the case body 24, and the lower end edge of the suction port 30 is Opening position,
That is, there is provided a flat rectifying plate 41a located above the lower surface of the case body 24 and facing the floor surface to be cleaned.

On the lower end edge of the support rib portion 42, a guide inclined upper surface 44 is formed in a concave shape corresponding to the intake lower concave portion 37 of the lower case 21 and is continuous from the tip end of the eave portion 41 and deepens toward the rear.
An intake upper concave portion 44 having a is provided. Then, the case body 24 is formed by the lower intake recess 37 and the upper intake recess 44.
At the front side, an intake port 45 is formed opening forward and downward, which is covered with a rectifying plate 41a, and an inclined intake air path which is located upward as the rear port communicates with the intake chamber 31.
46 are provided. Note that the intake port 45 is in a state in which the front upper portion is covered by the rectifying plate 41a and faces downward.

A driven front wheel chamber 48 in which a driven front wheel 48a is rotatably supported is formed at both front ends of the suction lower portion 21a of the lower case 21. A pair of driven rear wheels are provided on a pair of housing lower portions 21b, 21b of the lower case 21, respectively.
A driven rear wheel chamber 49 is formed so that the driven rear wheel 49a is rotatably supported. The driven rear wheel 49a is provided with a protection sheet (not shown) which is a flexible member such as cloth or an elastic member such as rubber on the outer peripheral surface. Then, the case body 24 includes a driven front wheel 48a.
And the driven rear wheel 49a can travel on the floor surface to be cleaned.

Further, on the lower surface of the lower case 21, a reel lip 51 projecting downward in a wall shape along the front side edge is detachably provided, and extends along the left and right direction behind the suction port 30. That is, a cleaning member 53 such as brush bristles protrudes downward along the edge of the suction port 30 in a wall shape and scrapes dust from the floor surface, and is provided detachably. The reel lip 51 and the cleaning body
By 53, the lower surface of the suction port 30 ensures a negative pressure state with respect to the atmospheric pressure during cleaning.

The case 24 has a housing 27,
A connection pipe portion 55 is provided between the lower case 21 and the lower case 21 and the upper case 22 to partition and define an air passage chamber 54 communicating with the rear substantially center of the suction chamber 31. This connecting pipe section 55
Has a shaft support pipe portion 57 having a cylindrical suction tube portion 56 whose one end in the axial direction gradually becomes larger in a trumpet shape toward the suction chamber 31. In addition, the connecting pipe portion 55 protrudes outward from the outer peripheral edge of the suction pipe portion 56 in a flange shape, and each peripheral edge is a lower case.
Lower rib 25a and upper rib 25 of 21 and upper case 22
The mounting plate portion 58 is engaged with the notch holding recesses 35a and 35b of FIG. Then, the connection pipe portion 55 is such that the suction pipe portion 56 at one end side of the shaft support pipe portion 57 expands in a trumpet shape toward the suction chamber 31 and the other end side projects substantially rearward from the case body 24,
The axial direction of the shaft support pipe portion 57 is disposed on the case body 24 along the front-rear direction and the horizontal direction. Further, on the outer peripheral surface of the shaft support pipe portion 57, a mounting groove portion 59 having a groove shape is provided along the circumferential direction.

Further, a joint portion 61 is attached to the shaft support tube portion 57 of the connecting tube portion 55 as a rotating tube which is rotatably fitted. Further, to the joint portion 61, a communication tube portion 62 is attached as a communication tube whose one end is rotatably supported on the joint portion 61 so that the other end is rotatable in the vertical direction. The joint portion 61 and the communication tube portion 62
Constitutes a connection pipe 63.

The communication tube portion 62 includes a cylindrical portion 65 having a substantially cylindrical shape and one end connected to the extension tube, and a communication rotating portion 66 provided at the other end of the cylindrical portion 65. I have. A rotating shaft 67 having an axial direction tangential to the outer peripheral surface is integrally provided above the opening edge of the communication rotating portion 66. The communication rotating unit 66 has an upper sliding contact surface 68a in the upper part with an arc centered on the center axis of the rotating shaft 67, and a lower sliding part in the lower part centered on the center axis of the rotating shaft 67 in the lower part. Having a contact surface 68b and a rotating shaft 67
A pair of side surfaces facing each other along the axial direction of the second member are formed in a fan-shape having substantially fan-shaped side sliding contact surfaces 68c, 68c.

Also, on the upper edge of the opening of the communication rotating portion 66,
A rotation restricting upper portion 70 is provided, which protrudes outward in the wall direction along the axial direction of the rotating shaft 67 and contacts the joint portion 61 to restrict the other end of the cylindrical portion 65 from rotating downward. I have. further,
On the lower edge of the opening of the communication rotating part 66, a stopper part 71 protruding outward in the shape of a wall along the axial direction of the rotating shaft 67 is provided. In addition, at the lower part of the outer peripheral surface of the cylindrical part 65, a rotation restricting lower part 72 that protrudes downward in a wall shape along the radial direction and abuts on the lower part of the joint part 61 to restrict the rotation is protruded. ing. Further, on the outer peripheral surface of the cylindrical portion 65, a wall-shaped locking claw portion (not shown) is formed along the axial direction at a radial position along the horizontal direction with the axial direction being located along the front-rear direction. A pair is protruded. These locking claws are formed on the cylindrical portion of the communication pipe portion 62.
When the axial direction of 65 is located along the longitudinal direction of the case body 24, it can be engaged with the hooking claw parts 74 projecting upward from the top surfaces of the housing portions 27, 27 of the case body 24. Has become.

Further, the communication pipe portion 62 is provided with an oscillating closing member 75 as a closing member located at the communication rotating portion 66. The swing closing member 75 is provided on the lower sliding contact surface 68 of the communication rotating portion 66.
A closed bottom plate 76 is provided that curves about the central axis of the rotation shaft 67 that is the center of b. One end of the closed bottom plate 76, which does not bend, protrudes in a wall shape toward the curved side, and its front end slides on the lower sliding contact surface 68b of the communication rotating portion 66 to contact the rotating portion.
A retaining locking claw 77 is provided, which abuts on the retaining restricting portion 71 of 66 and restricts the detachment from the communication rotating portion 66. Further, a pair of curving edges of the closed bottom plate 76 have reinforcing rib portions whose outer surfaces are in sliding contact with side sliding contact surfaces 68c of the communication rotating portion 66, respectively.
78 are provided. Further, the closed bottom plate 76 is provided on the side of the reinforcing rib portion 78 where the retaining locking claw portion 77 is provided.
The side sliding contact surface 68c of the communication rotating portion 66 in a belt shape toward the central axis of
The closing side plates 79 that are in sliding contact with each other are provided integrally. Further, a cylindrical support portion 80 is provided at the distal end of the closed side plate 79 so that the central axis is coaxial with the central axis of the closed bottom plate 76 and the rotary shaft 67 is rotatably fitted thereto.

The swinging closing member 75 has a support portion 80 fitted to the rotating shafts 67, 67, respectively, and as shown in FIG.
The state where the axial direction of the communication pipe 62 overlaps the communication rotation part 66 along the front-rear direction, and the state where the axial direction of the communication pipe part 62 is along the vertical direction as shown in FIG. Is pivotally supported so as to be relatively rotatable with respect to the communication rotation portion 66 between the communication rotation portion 66 and the cover.

On the other hand, the joint portion 61 has a cylindrical portion 85 fitted in the connecting tube portion 55 and rotatably held therein, and a downward opening at a half circumference of one end edge of the cylindrical portion 85. An upper joint 86 protrudes in a series of substantially hemispherical shapes, and a lower joint 87 substantially hemispherically, which covers the lower surface of the upper joint 86 and is integrally attached by screws or the like.

At the radial position of the cylindrical portion 85,
A pair of through-holes 88 are provided to face the mounting concave groove 59 of the shaft support pipe 57 of the connecting pipe 55. And in this through hole 88,
A mounting member 89 slidably engaged with the mounting groove 59 of the shaft support pipe portion 57 is removably mounted through the through hole 88, and the cylindrical portion 85 of the joint portion 61 rotates to the connection pipe portion 55. Can be attached freely.

The upper joint portion 86 has a curved upper curved sliding surface 91 on the lower surface of which the tip of the rotation regulating upper portion 70 of the communication rotating portion 66 of the communication pipe portion 62 slides in contact with the lower surface. It has a plate portion 92 and a spherical upper cover portion 93 which is respectively continuous with a pair of curved edges of the curved upper plate portion 92 and is curved downward in a spherical shape, and the outer surface side is continuously formed in a substantially hemispherical shape. Have been. The curved upper plate portion 92 of the upper joint portion 86 and the spherical upper cover portions 93, 93
A pair of substantially parallel partitioning upper ribs 94, 94 projecting downward in a wall shape and having the side sliding contact surface 68c of the swinging closing member 75 slidingly contacting the surface on the curved upper plate portion 92 side. Is provided. further,
The curved upper plate portion 92 of the upper joint portion 86 has a tubular portion 65 of the communication pipe portion 62.
A notch upper escape portion 95 is formed in a substantially U-shape so as to allow insertion. Then, the edge of the cutout escape portion 95 of the curved upper plate portion 92 protrudes downward in the shape of a wall, and the tip thereof is connected to the communication rotating portion 66.
A sliding contact rotation restricting portion 96 is provided for slidingly contacting the upper sliding contact surface 68a and contacting the rotation restricting upper portion 70 of the communication rotating portion 66 to restrict the rotation of the communication pipe portion 62.

The lower joint portion 87 has a lower sliding contact surface 101 which is curved upward and is opposed to the curved upper plate portion 92 of the upper joint portion 86 and in which the outer surface of the closing bottom plate 76 of the swing closing member 75 slides. A curved lower plate portion 102, and spherical lower cover portions 103, 103 which are respectively connected to a pair of curved edges of the curved lower plate portion 102 and which are curved upward and spherically. It is formed continuously in a shape. Further, between the curved lower plate portion 102 of the lower joint portion 87 and the spherical lower cover portion 103, the side wall of the swinging closing body 75 slides on the surface of the curved lower plate portion 102 protruding in a vertical wall shape. A pair of substantially parallel partition lower ribs 104 on which the surface 68c is in sliding contact,
104 are provided. Also, the curved lower plate part of the lower joint part 87
The notch 102 has a substantially U-shaped notched undercut portion 105 in which the cylindrical portion 65 of the communication pipe portion 62 can be inserted. Further, the curved lower plate portion 102 has a substantially semi-circular concave connection engagement concave portion which protrudes upward in a wall shape at an edge opposite to the notched undercut portion 105 and whose upper edge engages with the outer peripheral surface of the cylindrical portion 85. 106 is cut out, and the closing bottom plate 76 of the swing closing body 75 and the communication rotating portion 66 of the communication pipe portion 62 are formed.
There is provided a connection rotation restricting portion 107 for restricting the rotation of the swinging closing member 75 and the communication pipe portion 62 by contacting the lower edge thereof.

Further, the lower ribs 104, 10 of the lower joint portion 87 are defined.
4 is provided with a shaft support rib 110 which protrudes upward in the middle of the upper end edge in a tongue shape. Each of the upper ribs 94, 94 of the upper joint portion 86 is provided with a shaft support recess 111 which is formed in the same shape as the recess and is engaged with the shaft support rib 110 at an intermediate portion of the lower end edge. . Then, the leading edge of the bearing rib 110 and a bearing recess jointed to the leading edge are provided.
At the edge of 111, the notches 112, 11
2 are formed to face each other, and these shaft support notches 112
The bearing shafts 113, 113 for rotatably supporting the rotating shafts 67, 67 of the communication pipe portion 62 are formed by the above. The pivot rib 11
0 and the shaft support recess 111, as shown in FIG.
3, 113 are formed so that their central axes are substantially horizontal along the radial direction perpendicular to the central axis of the cylindrical portion 85 and are located above the central axis of the cylindrical portion 85.

A pair of partition upper ribs 94 and 94 and partition lower ribs 104 and 104 to which the leading edges are joined form a communication rotating portion of the communication pipe portion 62 between the curved upper plate portion 92 and the curved lower plate portion 102.
An air passage space 115 for accommodating 66 is formed, and the axial direction of the communication pipe portion 62 extends vertically as shown in the figure.
The closed bottom plate 76 of the swing closing body 75 is closed so as to bridge between the lower end of the communication pipe portion 62 and the curved lower plate portion 102 of the lower joint 87, and the air passage space 115 opens a gap. It communicates with the communication pipe part 62 without having. In addition, the swinging closing body 75 slides on the communication turning part 66 of the joint part 61 and the communication pipe part 62, and the upper part of the communication turning part 66 slides on the upper joint part 86 of the joint part 61, so that leakage occurs. No gap is created. And the connection pipe 63
Even when the rotary shaft 67 rotates, the cylindrical portion 65 of the communication pipe portion 62 is an extension pipe.
The suction port 30 communicates with the connection port 9 of the cleaner body 1 without any gap in a state where the suction port 30 is detachably connected to the cleaner body 1 via the hose 13 and the hose 8.

Further, inside the case body 24, the suction chamber 31 is rotatably supported by bearings 120, 120 provided at positions where the rib lower part 25a and the rib upper part 25b at both ends in the left-right direction are joined. A rotating cleaning body 121 as a rotating body is provided. This rotary cleaning body 121 has a shaft 123 having a spirally grooved blade mounting groove 122 on the outer peripheral surface.
A shaft support member 124 rotatably provided at both ends of the shaft 123 and removably attached to the bearing 120; and a wall mounted on the outer peripheral surface of the shaft 123 with one edge attached to the blade mounting groove 122 of the shaft 123. A blade 125 as a cleaning member, which is provided in a spiral shape and the tip side is curved to one side,
A cloth blade 126 is provided as a cleaning member having a raised surface on the surface in the direction in which the rotary cleaning body 121 rotates on one surface side. For convenience of explanation, the blade 125 and the cloth blade 126 are shown in a straight line.

The lower end of the rotary cleaning body 121 facing the suction port 30 is located above a plane formed by the driven front wheel 48a and the driven rear wheel 49a, and is in contact with a flat floor plate. The blade 125 comes into contact with the carpet, which is a floor surface having irregularities that enters the suction port 30, and the cloth blade 126 is located below the plane formed by the driven front wheel 48a and the driven rear wheel 49a, and comes into contact between the plates. It is arranged to floor.

The rotary cleaning body 121 is disposed so that the center axis of the intake air path is substantially tangent to the rotation trajectory of the tip of the blade 125. The blade 125 is efficiently sprayed on the tip of the curved side.

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

At the time of cleaning, the suction port main body 14 is connected to the cleaner main body 1 via the extension pipe 13 and the hose 8. In this state, hold the grip 15 of the hose 8 and switch the operating means 17
By the operation of 16, the electric blower is appropriately driven in a desired driving state, and the grip portion 15 is pushed to move the suction port main body 14 back and forth on the floor surface. When the suction port main body 14 travels on the floor, the first cleaning is performed in a state where the axial direction of the connection pipe 63, that is, the communication pipe section 62 is along the front-back direction which is the traveling direction of the suction port main body 14. Form.

Then, by driving the electric blower, the suction chamber 31 communicating with the side of the electric blower that has a negative pressure with respect to the atmospheric pressure.
The inside of the inside becomes a negative pressure with respect to the atmospheric pressure, and is sucked in from the suction port 45, and the sucked air flowing through the suction air passage 46 hits the blade 125 and the cloth blade 126 of the rotating cleaning body 121 to rotate the rotating cleaning body 121. Let it. This intake air flow is
Flows upward due to 41a and is located above the eaves
The air flows from the intake port 45 along the intake air path 46 along the cyclone 41 along the path 41. Then, the intake air flowing through the intake air passage 46 is blown substantially vertically to the blade 125 and the cloth blade 126 of the rotary cleaning body 121 in a state where the flow velocity is accelerated in a cyclone shape along the eaves portion 41, and the rotary cleaning body 121 Rotates with a large rotational torque. Further, the intake air flow acts on the rotation of the rotary cleaning body 121 over a long distance so as to gather toward the air passage chamber 54 at the center of the case body 24 along the axial direction of the rotary cleaning body 121 to increase the rotational torque. While flowing, it flows into the suction pipe section 56 of the connecting pipe section 55.

When the suction port body 14 travels on the floor, the tip of the blade 125 of the rotating rotary cleaner 121 collides with the floor to strike out dust when the floor is a carpet or the like. 125 is scraped out or swept away and dust is sucked through the suction port 30. When the floor surface is relatively flat, such as between a board and a tatami mat, the cloth blade 126 of the rotating rotary cleaning body 121 sweeps up dust on the floor surface while polishing the floor surface, and sucks the dust through the suction port 30. Furthermore, when suction air is sucked from the suction port 45 to rotate the rotary cleaning body 121, the suction port 45 faces the lower floor surface with the front upper portion covered by the buffer 23. Therefore, dust on the floor on the front side of the case body 24 is also sucked.

When cleaning is performed with the front side of the case body 24 facing the wall, the rectifying plate 41a of the buffer body 23 located at the front side of the case body 24 comes into contact with the wall at the front side, and the intake port 45 is closed. The air can be sucked in without being blocked by the wall surface, and no damage such as damage to the wall surface due to contact of the edge portion occurs.

The dust sucked together with air from the suction port 30 and the suction port 45 flows into the dust collecting chamber of the cleaner body 1 via the extension pipe 13 and the hose 8 and is captured.

In the first cleaning mode, the joint portion 61 hardly rotates with respect to the connecting pipe portion 55, and is connected to the extension pipe 13 of the communication pipe portion 62 as the suction port main body 14 travels in the front-back direction. The end is rotated vertically. This communication pipe
With the rotation of 62, the communication rotation part 66 of the communication pipe part 62
The swing closing member 75, which is rotatable in the air passage space chamber 115 of the communication tube 61 and is sandwiched between the joint portion 61 and the communication rotation portion 66 of the communication pipe portion 62, is connected to the communication rotation portion 66. Rotate relative to. Then, the suction port main body 14 is retracted so as to be pulled toward the cleaning operator, that is, the other end side of the communication pipe portion 62 is rotated upward, and the communication rotating portion 66 is bent by the lower joint portion 87 of the joint portion 61. In the case of being disengaged from the lower plate portion 102, the retaining locking claw portion 77 of the swinging closing member 75 abuts on the retaining restricting portion 71 of the communication rotating portion 66, and with the rotation of the communication rotating portion 66. As a result, the swing closing body 75 rotates, and covers the lower part of the communication rotating part 66, so that no gap is formed between the lower joint part 87 and the communication rotating part 66.

In places where the vertical direction is narrow, such as under furniture, as shown in FIG. 2, the communication pipe 62 is rotated so that the axial direction of the communication pipe 62 extends in the front-rear direction of the case body 24 along the horizontal direction. In this state, the lower opening edge of the communication turning portion 66 of the communication pipe portion 62 and the front edge of the closing bottom plate 76 of the swinging closing member 75 abut against the sliding contact turning restricting portion 96 of the lower joint portion 87, respectively. The closing bottom plate 76 is sandwiched between the turning portion 66 and the curved lower plate portion 102 of the lower joint portion 87, and the swinging closing member 75 overlaps the communication turning portion 66.

On the other hand, when cleaning a relatively narrow place such as a space between furniture, that is, a floor having a width dimension in which the horizontally long suction port body 14 cannot travel, the axial direction of the communication pipe portion 62 of the connection pipe 63 is determined by the suction direction. The connecting pipe 63 extends horizontally along the longitudinal direction of the mouth body 14.
The joint portion 61 and the communication pipe portion 62 are rotated, and the cleaning mode is changed to the second cleaning mode so that the longitudinal direction of the suction port main body 14 is the running direction, and the suction port main body 14 is slid into the gap. And clean it.

When the hose 8 is placed on the floor, or when the dust clogged in the suction port 30 is removed, the rotary cleaning member 121 is removed.
In order to remove thread debris entangled with the
When the lower surface of the suction chamber 31 is separated from the floor surface, the negative pressure with respect to the atmospheric pressure in the suction chamber 31 is reduced to a state close to the atmospheric pressure, and the amount of intake air blown from the intake port 45 to the rotary cleaning body 121 is reduced,
The rotation of the rotary cleaning body 121 stops.

When the cleaning is interrupted or stopped, the hook portion 18 provided on the extension tube 13 is engaged with a notch not shown provided on the main body case 2, and the hose 8 and the suction port main body are attached to the main body case 2. The extension tube 13 is locked and held with the 14 connected. In this case, as shown in FIG. 1, the communication pipe portion 62 of the connection pipe 63 is held in a state where the axial direction is along the vertical direction. Even in this state, as described above, the swing closing body 75
This prevents a gap from being formed between the joint portion 61 and the lower portion of the communication tube portion 62.

As described above, the upper opening edge of the suction port 45 formed above and forward of the opening position of the suction port 30 is formed in the case body 24 that opens the suction port 30 and located at the forefront of the suction port main body 14. In order to provide a rectifying plate 41a which is wall-shaped and has a lower end located above the opening position of the suction port 30 and faces the floor surface from the leading edge of the eaves portion 41 of the cushioning member 23,
Due to 41a, the intake port 45 is substantially directed to the floor,
When sucking air from the air inlet 45, dust on the floor located on the front side of the case body 24 can also be absorbed, and the air inlet 45 is opened to the front of the air inlet main body 14, so that it is possible to sufficiently absorb the dust up to the wall. Efficiency can be improved and cleanability can be improved.

Further, the suction air sucked from the suction port 45 flows in a cyclone shape from the lower side to the upper side along the eaves portion 41 and is sprayed on the outer peripheral portion of the rotation trajectory of the rotary cleaning body 121 in a state where the flow velocity is accelerated. Rotating cleaning body 12
1 can be efficiently rotated with a large torque, the ability to scrape dust out of the floor is improved, the dust absorption efficiency can be improved, and the cleaning performance can be improved.

Further, since the outer surface side which is the front side of the plate-shaped current plate 41a is planar, the edge of the leading edge of the eaves portion 41 may damage walls and furniture which come into contact during cleaning. Can be cleaned without fear.

Furthermore, since the current plate 41a is integrally formed integrally with the eaves 41 of the buffer 23 formed of an elastic member, even if it collides with a wall or furniture during cleaning, damage is reliably prevented. it can.

In the above embodiment, not only the vacuum cleaner of the canister type, but also the upright type in which the suction body 14 is formed directly on the lower surface of the cleaner body 1, the cleaner body 1 and the suction body 14 The present invention can also be applied to a self-propelled vacuum cleaner, a hand-held type, and the like in which is integrated.

The rotary cleaning member 121 may be provided with any cleaning member such as a rotary brush having raised walls in the shape of a wall, or an integrated cloth blade 126 and blade 125.

The rectifying plate 41a may be provided with, for example, an eave portion 41 integrally with the upper case 22, and provided on the front edge of the upper case 22.

The rectifying plate 41a is not limited to a part of the buffer body 41a, but may be formed integrally by, for example, projecting the front edge of the upper case 22 downward.

The present invention is not limited to the elastic member, and may be formed integrally with the upper case 22 using the same material.

[0061]

According to the suction port body of the vacuum cleaner according to the first aspect, the upper opening edge of the suction port formed in the case body opening the suction port above and ahead of the opening position of the suction port. In order to provide a flow straightening plate located in front of the lower opening edge of the air intake opening and having a downward wall shape and a lower end located above the opening position of the air intake opening, the air intake opening is substantially provided on the surface to be cleaned by the air flow adjustment plate. When sucked through the air inlet, dust on the surface to be cleaned located on the front side of the case body can be sucked in, and the dust can be sufficiently absorbed up to the wall to improve the dust absorption efficiency, and it becomes the front side of the current plate. The outer surface side is planar, and there is no risk of damaging walls, furniture, etc. by the edge portion.

According to the suction port of the vacuum cleaner according to the second aspect, in addition to the effect of the suction port of the vacuum cleaner according to the first aspect, since the rectifying plate is formed by an elastic member, for example, a wall or the like can be used. Damage can be prevented even if it comes into contact with furniture.

According to the third aspect of the present invention, the dust on the surface to be cleaned, which is located on the front side of the case body, is sucked when the air is sucked from the air inlet, and the dust is sufficiently sucked up to the wall, so that the suction port ratio is reduced. In addition to the improvement, since the suction port of the vacuum cleaner according to the first or second aspect of the present invention prevents damage to a wall or furniture by an edge portion, the cleaning performance can be improved.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a suction port main body according to an embodiment of the present invention in a state where a communication pipe is set up.

FIG. 2 is a side sectional view showing the suction port main body in a state where the communication pipe is folded down.

FIG. 3 is a plan view showing the suction port main body in which a part of the upper case is cut away.

FIG. 4 is a front view of the suction port main body.

FIG. 5 is a bottom view of the suction port main body.

FIG. 6 is an exploded perspective view showing a relationship between an upper case of the suction port main body and a communication pipe.

FIG. 7 is a sectional view showing the connecting pipe.

FIG. 8 is a perspective view showing the electric vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 14 Suction port main body 24 Case body 30 Suction port 41a Rectifier plate 45 Suction port 121 Rotary cleaning body 125 Cleaning blade 126 Cloth blade as cleaning member

Claims (3)

[Claims] 1. A case body having an intake port opened on a surface facing a surface to be cleaned and having an intake port opened above and forward of an opening position of the suction port, and the case body is rotated facing the intake port. A rotary cleaning member that is freely provided, has a cleaning member that scrapes dust from the surface to be cleaned, and that rotates by being blown by the suction flow from the suction port to the cleaning member, and from a top opening edge of the suction port downward. And a rectifying plate which is provided so as to protrude toward the wall and is located forward of a lower opening edge of the suction port and a lower end is located above an opening position of the suction port. Suction port body. 2. The suction port of a vacuum cleaner according to claim 1, wherein the current plate is formed of an elastic member. 3. A vacuum cleaner comprising: a vacuum cleaner main body; and a suction port of the vacuum cleaner according to claim 1 connected to the vacuum cleaner main body.