JP2001149282A - Sucking port body and electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sucking port body, with which dust is hardly left from suction, convenience in handling is improved and vacuum in a suction chamber can be secured, and an electric vacuum cleaner, for which this inlet port body is used. SOLUTION: A sucking port body 19 is provided with a main body 21 of sucking port having a suction chamber 20 and forming a suction opening 23 of this suction chamber 20 on the base 21a, and a rotary cleaning body 24 provided in the suction chamber 20 so as to freely rotate, A suction hole 41 for communicating the suction chamber 20 and the outside is formed at the front part of the main body 21 of sucking port, the rotary cleaning body 24 is rotated by a sucked air current from this suction hole 41, a suction inlet 41a of the suction hole 41 sucks dust while facing a surface Q to be cleaned and on the base 21a of the main body 21 of sucking port, a blade 45 for dust collection is provided at the back of the suction inlet 41a and in front of the suction opening 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port in which a rotary cleaning member is rotatably provided in a suction chamber, and a vacuum cleaner having the suction port.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 9 and 10, a suction port main body 3 having a suction chamber 1 and a suction opening 2 of the suction chamber 1 formed in a bottom surface 3a, A suction port body 6 including a rotatable rotatable cleaning body 4 and having a suction port 5 formed at a front portion of the suction port main body 3 for communicating the suction chamber 1 with the outside is known.

In the suction opening 6, when the suction chamber 1 is brought into a negative pressure by driving a vacuum cleaner (not shown) to which the suction opening 6 is connected, dust on the surface to be cleaned is sucked from the suction opening 2 and the suction opening 5 is formed. When the outside air is sucked in, the rotating cleaning body 4 rotates in the direction of arrow P and blows up dust on the surface to be cleaned.

[0004]

By the way, in this kind of suction port body, a blade for ensuring the degree of vacuum of the suction chamber 1 is provided on the bottom surface 3a of the suction port main body 3 in front of the suction opening 2. However, when the suction port is advanced, the dust is pushed to the front of the blade and dust accumulates in front of the blade, and when the suction port is advanced, the accumulated dust is collected on the surface to be cleaned. However, there is a problem that it is inconvenient to handle because it cannot be sucked in after all.

On the other hand, there has been developed a suction port body in which the suction port of the suction port faces the surface to be cleaned and which sucks dust (for example, see Japanese Patent Application No. 11-316496). Even so, it is desirable that a means for ensuring the degree of vacuum in the suction chamber is provided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a suction port body which is less likely to leave dust and is convenient for handling and which can ensure the degree of vacuum in the suction chamber. It is an object to provide a vacuum cleaner using a body.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a first aspect of the present invention is directed to a suction port body having a suction chamber and having a suction opening formed on a bottom surface of the suction chamber, A rotatable cleaning body provided rotatably, and a suction port communicating the suction chamber and the outside is formed at a front portion of the suction port main body, and the rotary cleaning body is formed by the suction flow from the suction hole. A rotating suction port body, wherein the suction port of the suction port faces a surface to be cleaned and sucks dust on the surface to be cleaned; and a bottom surface of the suction port main body behind the suction port and the suction opening. , A wall-shaped member for dust collection is provided in front of the device.

According to a second aspect of the present invention, in the suction port body according to the first aspect, the lower portion of the wall-shaped member contacts the surface to be cleaned.

[0009] The invention of claim 3 is claim 1 or claim 2.
Wherein the wall-shaped member is a brush or a blade.

[0010] The invention of claim 4 is the invention of claims 1 to 3.
A vacuum cleaner provided with the suction port body according to any one of the above.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 10 denotes a vacuum cleaner main body.
Inside the vacuum cleaner main body 10, a dust collecting chamber 11 and an electric blower 12 for making the dust collecting chamber 11 a negative pressure are provided.
The dust collection chamber 11 is provided with a dust collection filter 13.

Reference numeral 14 denotes a hose having one end detachably connected to the main body 10 of the vacuum cleaner. The other end of the hose 14 is provided with a hand control tube 15, and the hand control tube 15 is provided with a handle portion 16. Have been. The handle 16 is provided with a hand operation unit 17. The hand operation unit 17 includes an off switch S1 for turning off the power of the electric blower 12 and a high / low switch S2 for setting the power of the electric blower 12 to high or low. When,
Automatic switch S for automatically setting the power of the electric blower 12
3 are provided.

An extension tube 18 is detachably connected to the hand operation tube 15, and a suction port 19 is detachably connected to a distal end of the extension tube 18.

As shown in FIGS. 2 to 5, the suction port body 19 is provided with a suction port body 21 having a suction chamber 20 and a vertically rotatable rear portion of the extension pipe 1 at a rear portion of the suction port body 21.
8 and a connection pipe 22 detachably connected to the
The front wheels 47, 47 and the rear wheels 48, 48 are provided on the bottom surface 21a of the first unit 1 to smoothly advance and retreat the suction port body 19. A suction opening 23 of a suction chamber 20 is formed in a bottom surface 21a of the suction port main body 21, and a rotary cleaning body 24 is rotatably provided in the suction chamber 20. The rotary cleaning body 24 has a plurality of blades 25 (see FIG. 6).

The suction port body 21 has a lower case 26, an upper case 27 attached to the lower case 26, and a portion located on the side of the suction port body 21 sandwiched between the lower case 26 and the upper case 27. Air pipe 29 sandwiched between the lower case 26 and the upper case 27
A rotary pipe 30 rotatably mounted on the outer periphery of the air duct pipe 29; and a cover 31 having a substantially U-shaped cross section fixed to the rotary pipe 30 with screws (not shown). A shaft portion 32 provided at the front lower end of the connection tube 22 is pivotally supported on the rear upper side of the rotary tube 30, and the connection tube 22 is rotatable in the front-rear direction about the shaft portion 32. .

As shown in FIG. 6, the lower case 26 has a suction opening 23 formed on the bottom surface 21a, and a partition 33 is formed behind the suction opening 23 along the suction opening 23. I have. The suction chamber 20 is defined by the lower case 26, the partition 33, the upper case 27, the partition (not shown) formed on the upper case 27, and the bumper 28 (see FIG. 5). The partition of the upper case 27 is in contact with the partition 33 of the lower case 26.

A pair of inclined surfaces 34, 34 extending in the left-right direction are formed on both sides of the front end of the lower case 26, and the inclined surfaces 34, 34 are inclined downward toward the front. The length of each inclined surface 34 in the front-back direction, that is, the length of the inclined surface is set to be longer than the thickness of the lower case 26. A hollow cylindrical wall 35 is provided between the two inclined surfaces 34, 34.

The bumper 28 has a front guard portion 36 extending in the left-right direction for protecting the front end of the suction port main body 21 and a side extending rearward from both ends of the front guard portion 36 to protect the side portion of the suction port main body 21. It has guard portions 37, 37. The front guard portion 36 extends in the left-right direction along the front end of the upper case 27, and is formed in a belt shape inclined forward and downward. The front end 36a of the front guard portion 36 projects forward from the front end of the lower case 27, and the lower surface 36b of the front guard portion 36 is inclined downward toward the front.

A leg 38 is formed at the center of the lower surface 36b of the front guard portion 36, and the leg 38 is
6 is joined to the upper surface of the cylindrical wall 35. Further, legs 39, 39 are formed on both sides of the lower surface 36b of the front guard portion 36, and the legs 39, 39 are formed on the front wall 4 of the lower case 26.
It is joined to the upper surface of the 0,40.

The inclination angle of the lower surface 36b of the front guard portion 36 is set smaller than the inclination angle of the inclined surface 34 of the lower case 26,
The length of the lower surface 36b in the front-rear direction is equal to that of the upper case 27.
Is set to be longer than the wall thickness. The front guard portion 36 of the bumper 28 and the inclined surfaces 34, 34 of the lower case 26 form intake holes 41, 41. That is,
The upper side of the air intake holes 41, 41 is formed by the bumper 28, the lower side of the air intake holes 41, 41 is formed by the lower case 26, and the upper side of the air inlet 41a of each air hole 41 projects forward from the lower side and the air inlet is formed. 41a faces the surface Q to be cleaned.

Each intake hole 41 is inclined downward toward the front, and the length in the front-rear direction is sufficiently longer than the thickness of the lower case 26 and the upper case 27. Further, each intake hole 41 is formed to have a smaller dimension on the intake outlet 41b side than a dimension on the intake inlet 41a side, and has a shape narrowed from the entrance to the exit. Also,
The suction outlet 41b is connected to the upper blade 25 of the rotary cleaning body 24.
Is aimed at.

The air duct pipe 29 has a guide portion 42 which spreads in a trumpet shape in the left-right direction and faces the suction chamber 20, and a pipe portion 43 having a circular cross section continuous with the guide portion 42. This pipe section 4
A distal end portion 30a of the rotary tube 30 is rotatably fitted on the outer periphery of the tube 3. Then, the suction chamber 20 and the connection pipe 22 communicate with each other via the air duct pipe 29, the rotary pipe 30, and the cover 31.

The cover 31 attached to the rotary tube 30
7, a shutter 44 is interposed between the rear end of the cover 31 and the front end of the connection pipe 22 when the connection pipe 22 is erected, as shown in FIG. Is formed so as to close the gap formed. on the other hand,
As shown in FIG. 8, when the connecting pipe 22 is turned down, the shutter 44 enters the cover 31 and the end of the straight connecting pipe 22 does not block the air passage of the rotary pipe 30. ing.

On the bottom surface 21a of the suction port main body 21, a blade 45 as a wall-shaped member is provided behind the intake ports 41a, 41a and in front of the suction port 23.
Further, a brush 46 is provided on the bottom surface 21a of the suction port main body 21.
Is provided behind the suction opening 23. Here, the blade 45 and the brush 46 extend along the left-right direction over substantially the entire width of the suction opening 23,
The lower end 45a of the brush 46 and the lower end 46a of the brush 46 come into contact with the floor surface even when cleaning the floor surface such as a flooring.

Next, the operation of the suction port and the vacuum cleaner configured as described above will be described.

When the strength switch S2 or the automatic switch S3 of the hand operation unit 17 is operated, the electric blower 12 is driven, and the dust collection chamber 11 becomes negative pressure, and the hose 14, the extension pipe 1
8, the suction chamber 20 has a negative pressure through the connection pipe 22, the rotary pipe 30, and the air path pipe 29. This negative pressure causes the suction port body 2
Dust is sucked together with the outside air from the first suction opening 23,
The outside air and the dust form the suction chamber 20, the air duct 29, and the rotating pipe 3.
The dust is guided to the dust collection chamber 11 via the connection pipe 22, the extension pipe 18, and the hose 14, and the dust is collected by the dust collection filter 13.

On the other hand, the negative pressure in the suction chamber 20 causes
The outside air is taken in from the air cleaners 1 and 41, and the air flow is blown to the blade 25 on the upper side of the rotary cleaning body 24, and the rotary cleaning body 24
Rotates in the direction of arrow P to scrape up dust on the surface Q to be cleaned. In addition, intake holes 41a of the intake holes 41, 41a.
Is directed downward, and the front end 36a of the bumper 28, which is the upper part of the air intake holes 41, 41, projects forward from the lower case 26. The dust on the floor beside the wall can be efficiently sucked together with the outside air sucked by the holes 41, 41. At this time, the front end 36a of the bumper 28 is
Since it protrudes further forward, the wall and other furniture are prevented from being damaged, and the length of the air intake holes 41, 41 in the front-rear direction is sufficiently larger than the thickness of the upper case 27 and the lower case 26. Since it is long, the air blown to the blade 25 is sufficiently rectified, and the rotary cleaning body 24 can be rotated efficiently.

In addition, as described above, the suction holes 41 suck the dust on the surface Q to be cleaned, and the blade 45 is positioned on the bottom surface 21a of the suction main body 21 behind the suction inlet 41a and in front of the suction opening 23. Is provided, dust is collected in front of the blade 45 when the suction port body 21 advances, and the dust is sucked into the suction chamber 20 through the suction holes 41, 41 from the suction inlets 41a, 41a, while the suction port body. At the time of retreat, dust is collected behind the blade 45 and the dust is sucked through the suction opening 23, so that dust is not easily left unremoved, which is convenient for handling.
Further, since the blade 45 also plays a role of ensuring the degree of vacuum of the suction chamber 20, it is possible to suppress the reduction of the suction force while preventing the occurrence of unsucked as a result. Since the cleaning surface Q is in contact with the cleaning surface Q, it is possible to achieve both of them, especially in a high dimension.

In the above embodiment, the blade 45 is provided as the wall-shaped member, but a brush may be provided instead of the blade. Further, although the wall-shaped members are provided along the left-right direction over substantially the entire width of the suction opening 23, it is not always necessary to provide the wall-shaped members over the entire width as described above, and a plurality of shorter wall-shaped members are provided at predetermined intervals. Is also good.

[0031]

As described above, according to the first aspect of the present invention, the suction inlet of the suction hole faces the surface to be cleaned and sucks dust on the surface to be cleaned. Is provided behind and in front of the suction opening, so that dust is collected in front of the wall-like member when the suction opening body advances, and the dust is collected from the suction inlet to the suction hole. Through the suction chamber. Further, when the suction port body is retracted, dust is collected behind the wall-shaped member, and the dust is sucked through the suction opening. Further, since the wall-shaped member also plays a role of ensuring the degree of vacuum in the suction chamber, it is possible to suppress the reduction of the suction force while preventing the occurrence of unsucked as a result.

According to the second aspect of the present invention, since the lower portion of the wall member contacts the surface to be cleaned, the dust collection efficiency of the wall member and the degree of vacuum in the suction chamber can be further increased.

According to the third aspect of the present invention, the effects of the first or second aspect can be obtained by using a versatile brush or blade.

According to the invention of claim 4, it is possible to provide a vacuum cleaner having the effects of the invention according to any one of claims 1 to 3.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a vacuum cleaner provided with a suction port according to the present invention.

FIG. 2 is an enlarged plan view showing the suction port body of FIG. 1;

FIG. 3 is an enlarged front view showing the suction port body of FIG. 1;

FIG. 4 is an enlarged side view showing the suction port body of FIG.

FIG. 5 is a longitudinal sectional view showing a detailed configuration of a suction port body of FIG. 4;

FIG. 6 is a plan view showing a lower case of the suction port body.

FIG. 7 is a longitudinal sectional view showing a state where the connection pipe is erected.

FIG. 8 is a longitudinal sectional view showing a state where the connecting pipe is laid down.

FIG. 9 is a plan view showing a conventional suction port body.

FIG. 10 is a side view showing a partial cross section of the suction port body of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vacuum cleaner main body 19 Suction port body 20 Suction chamber 21 Suction port main body 21a Bottom surface 23 Suction opening 24 Rotary cleaning body 41 Suction hole 41a Suction inlet 45 Blade (wall-shaped member) 45a Lower end (lower part) Q Cleaning surface

Claims (4)

[Claims] 1. A suction port body having a suction chamber and having a suction opening formed in a bottom surface of the suction chamber, and a rotary cleaning member rotatably provided in the suction chamber. In the front part, an intake hole communicating the suction chamber and the outside is formed,
A suction port in which the rotary cleaning body is rotated by an airflow from the air inlet, wherein an air inlet of the air inlet faces a surface to be cleaned and sucks dust on the surface to be cleaned; A suction-collecting body, wherein a dust-collecting wall-shaped member is provided on a bottom surface of the suction port behind the suction inlet and in front of the suction opening. 2. The suction port according to claim 1, wherein a lower portion of the wall-shaped member contacts the surface to be cleaned. 3. The suction port according to claim 1, wherein the wall member is a brush or a blade. 4. An electric vacuum cleaner comprising the suction opening according to claim 1.