JP3466066B2 - Suction port for vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body used in an electric vacuum cleaner, and more particularly to a suction port body which rotates a brush by intake air.

[0002]

2. Description of the Related Art A suction port body used in a conventional electric vacuum cleaner is designed to rotate a rotary cleaning body having a brush and take in dust inside the suction port body to absorb the dust. For the rotation, a method using a small motor provided inside the suction port body and a method using a turbine have been put into practical use.

The latter suction port using a turbine is widely used because it is lighter in weight than a system using a small motor and has excellent operability in cleaning, but its structure is, for example, It is disclosed in Japanese Patent Laid-Open No. 9-28630.

According to this, the rotary cleaning body having the brush has the turbines coaxially coupled to the rotary cleaning body on both sides, and the intake air is provided at a portion other than the dust suction opening portion of the suction port body. Intake air from the mouth rotates the turbine to rotate the rotary cleaning body.

[0005]

However, in the structure using the above-mentioned turbine, in order to obtain a rotation torque as large as possible, a turbine having a large blade area is required on both sides of the rotary cleaning body, and the outer shape of the suction port body is required. As the size increases and the number of parts increases, assembly is complicated and costly.

An object of the present invention is to provide a suction port body for an electric vacuum cleaner which has a reduced number of parts, is small and lightweight, and is inexpensive.

[0007]

In order to achieve the above-mentioned object, the present invention provides a cylindrical body having a hollow inside, and a cylindrical body protruding from the cylindrical body surface of the cylindrical body, and rotating the cylindrical body to generate dust. has a brush scraped and a plurality of rotor blades fan projecting from the tubular body surface of the tubular body, and an opening portion provided between said rotor blade fan adjacent said cylindrical body From inside
The air is discharged through the opening to
A rotary cleaning body that applies a rotation torque with a blade fan, a shield member that covers the rotary cleaning body in an arc shape, a dust suction opening that absorbs dust, and an intake port that is capable of inflowing outside air and is different from the dust suction opening. The intake air flowing in from the intake port is released from the inside of the tubular body through the opening.
By being taken out, the rotating fan cleans the rotation.
It is characterized in that a rotating torque is applied to the body to rotate the rotary cleaning body. Further, the present invention is a cylinder having a hollow inside.
And a tubular body projecting from the tubular body surface of the tubular body
The brush for scraping dust by the rotation of the
Extending in the longitudinal direction of the
Adjacent to a plurality of blade fans protruding from the cylindrical surface
An opening provided between the moving blade fans,
Air is discharged from the inside of the tubular body through the opening.
This allows the rotor blade fan to generate a rotational torque.
Roll cleaning member and shielding member for covering the rotary cleaning member in an arc shape
With a dust suction opening that absorbs dust and outside air can flow in,
An intake port different from the dust suction opening;
The intake air that has flowed in from the mouth is discharged from the inside of the tubular body to the opening
Rotate the rotary cleaning body by the moving blade fan through the
It is characterized by tightening.

According to the present invention, the intake air taken into the hollow portion inside the rotary cleaning body from the intake port different from the dust suction opening portion is supplied from the opening portion of the rotary cleaning body while applying the rotating torque to the moving blade fan. It is discharged to the outside of the rotary cleaning body and is sucked into the vacuum cleaner body together with the intake air from the dust suction opening.

Further, the suction port body of the present invention has a shield member that covers the rotary cleaning member in an arc shape, and the shield member performs rotary cleaning of an intake path extending from the dust suction opening to the vacuum cleaner body. It shields below the center of rotation of the body.

According to the present invention, the intake air taken into the hollow portion inside the rotary cleaning body from the intake port different from the dust suction opening portion applies the rotary torque in the same direction to the moving blade fan, and the intake air of the rotary cleaning body is removed. It is discharged from the opening to the outside of the rotary cleaning body, and is sucked into the main body of the electric vacuum cleaner together with the intake air from the dust collecting opening.

Further, in the suction port body of the present invention, the shielding member has a curved surface shape with respect to the intake passage in the vicinity of the portion that shields the intake passage.

According to the present invention, the intake air taken into the hollow portion inside the rotary cleaning body from the intake port different from the dust suction opening portion applies the rotary torque in one direction to the moving blade fan, and the intake air of the rotary cleaning body is removed. It is discharged from the opening to the outside of the rotating cleaning body,
It is sucked into the main body of the electric vacuum cleaner along the curved surface of the shielding member with the intake air from the dust suction opening.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a suction port body for an electric vacuum cleaner according to the present invention will be described with reference to the drawings. Figure 1
It is a top view which shows the state which removed the upper case of the suction inlet of this embodiment, and FIG. 2 is the sectional view on the AA line in FIG.

In FIG. 2, a suction port body 1 is a long pipe 1 for connecting a vacuum cleaner body (not shown) to the suction port body 1.
7 are connected by a mouthpiece pipe 7, and the mouthpiece pipe 7 is
Depression angle θ of the long pipe 17 when using the vacuum cleaner
Is connected to an adjustable drive pipe 6. Drive pipe 6
Has sliding surfaces 6a and 6b, and the sliding surface 2a of the upper case 2
And the long pipe 17 by sliding on the sliding surface 3a of the lower case 3.
The elevation angle θ of is adjusted.

A pair of rollers 1 is provided in front of the lower case 3.
2 is rotatably arranged, and a floor brush 10 that comes into contact with the floor surface is loosely fitted to the front and the rear with a dust suction opening 15 provided in the center of the lower case 3 interposed therebetween. Also, lower case 3
A pair of wheels 9 are provided on the rear side of the upper case 2 and the lower case 3.
Is rotatably clamped, so that the suction port body 1 can smoothly move on the floor surface together with the roller 12 described above.

Further, by the upper case 2 and the lower case 3,
In front of the suction port body 1, a bumper 11 for preventing scratches due to contact with the wall surface and intake leakage, and a central portion of the suction port body 1,
A bearing for holding a rotary cleaning body 5 to be described later is sandwiched, and a brush 31 for scraping up dust from a carpet or the like is provided on the rotary cleaning body 5 in a protruding manner.

A shield member 13 having a substantially cylindrical surface 13a so as to cover the outer periphery of the rotary cleaning body 5 is fixed by the engaging portions 2b and 3b of the upper case 2 and the lower case 3, and the shield member 13 is fixed. Forms an airflow passage 14 between the dust suction opening 15 and the upper wall surface 3c of the lower case 3 by the tongue 13b in the air intake path from the vacuum cleaner main body,
The intake air is sucked into the vacuum cleaner body through the airflow passage port 14.

Next, in FIG. 1, bearings 4 in which the rotary shaft 42 of the above-mentioned rotary cleaning body 5 is fitted with the thrust washer 35 sandwiched are provided in the lower case 3 on both sides inside the suction port body 1. The rotary cleaning body 5 is supported by the support ribs 19 formed.
Is rotatably supported.

An intake port 16 is formed in the side surface 3d of the lower case 3, and intake air is taken into the intake port body 1 from the intake port 16 in the direction of arrow (a) and passes through the inside of the rotary cleaning body 5. Is discharged to the outside of the rotary cleaning body 5, and the arrows (b), (c),
Go to (d) and be sucked into the vacuum cleaner body. The details of this intake air flow will be described later. Also, the intake port 1
The intake air from 6 and 16 is prevented from being directly sucked into the drive pipe 6, and a slight gap is provided so that the shielding rib 18 does not come into contact with the outer shape of the rotary cleaning body 5 so as to be sucked into the rotary cleaning body 5 as much as possible. It is projected in the provided shape.

The supporting ribs 19, the shielding ribs 18, and the intake port 16 are also formed on the upper case 2. FIG. 3 is a view of the suction port body 1 as viewed from the side, showing an example of the arrangement of the suction ports 16.

Next, referring to FIGS. 4 and 5, the rotary cleaning body 5
Will be described in detail. FIG. 4 is a perspective view showing the rotary cleaning body 5, and FIG. 5 is a sectional view taken along line BB in FIG. In these figures, the rotary cleaning body 5 has a hole 40b.
A hollow cylindrical body 40 having the above structure is integrally sandwiched and fixed by support rings 41, 41, and an upper surface 41a of the support ring 41 has a rotation shaft 42 serving as a rotation center of the rotary cleaning body 5. And an intake hole 43 for taking intake air into the inside of the cylindrical body 40.

Further, a brush 31 extending in the longitudinal direction of the substantially cylindrical surface 40a of the cylindrical body 40 and protruding in the normal direction is fixedly inserted into the brush insertion groove 34 in the cylindrical body 40. A plurality of moving blade fans 32, which extend in the longitudinal direction of the cylindrical surface 40a and are inclined in one direction with respect to the normal direction, are provided in a protruding manner. The moving blade fan 32 has a front moving blade fan 32a and a rear moving blade fan 32b, and has a rear moving blade fan 3a.
2b gives a rotary torque to the rotary cleaning body 5 by the intake air discharged from the rotary opening 33 described later, and the front rotor blade fan 32a is discharged from the rotary opening 33 by the rotation of the rotary cleaning body 5. The intake air is advanced in the rotation direction of the rotary cleaning body 5.

A rotary opening 33 penetrating the hole 40b of the cylindrical body 40 is provided between adjacent moving blade fans 32, and intake air taken into the cylindrical body 40 is discharged in the arrow (B) direction. When the cleaning is performed, the rotary cleaning body 5 is rotated in the direction of arrow E. The rotary opening 33 may be provided over the entire length of the moving blade fan 32, or may be partially provided with the substantially cylindrical surface 40a in order to maintain the strength of the cylindrical body 40.

In the suction port body 1 having such a structure, in FIG. 2 described above, when the suction port body 1 is separated from the floor surface, most of the suctioned air is indicated by the arrow (e). like,
It is taken in from the dust suction opening 15 and collides with the moving blade fan 32 at the lower right part of the rotary cleaning body 5 in the figure, and the rotary cleaning body 5 is moved to the arrow E direction.
While being rotated in the direction of, the air flow passage 14 is sucked in the direction of the arrow (d) toward the main body of the vacuum cleaner.

When the suction inlet 1 is in contact with the floor surface and the dust suction opening 15 is closed, most of the suctioned air is sucked from the suction port 16 (see FIG. 1). 43 (Fig. 4
(See FIG. 4) and is taken into the hole 40b (see FIG. 4) of the cylindrical body 40, and discharged from the rotary opening 33 in the direction of the arrow (b). The body 5 is rotated in the direction of arrow E.

The intake air discharged from the rotary opening 33 is moved in the direction of the arrow (g) along the substantially cylindrical surface 13a of the shielding member 13 by the rotation of the front moving blade fan 32a and the brush 31 in the direction of the arrow E. It moves and is sucked in the direction of the arrow (d) from the airflow passage 14 to the main body of the electric vacuum cleaner together with a small amount of intake air taken in through the dust suction opening 15.

As described above, the hollow rotary cleaning body 5
By providing the moving blade fan 32 and the rotary opening 33 in the above, the rotary cleaning body 5 can be rotated by the intake air without using a turbine.

Further, if the cylindrical body 40 of the rotary cleaning body 5 is not a cylindrical shape but a cylindrical body, the same effect can be obtained even if the cross section is other than a circle.

Further, as shown in FIG. 6, the intake air in the direction of the arrow (l) emitted from the lower right portion of the rotation center 5a of the rotary cleaning body 5 in the normal direction of the rotary cleaning body 5 passes through the air flow. Mouth 1
Since the direction is changed as shown by the arrow (o) so as to follow the air flow direction (4) in FIG.
Receives counterclockwise rotation torque.

However, the direction of intake air in the air flow passage 14 is determined by the shape of the upper wall surface 3c of the lower case 3 in a range from substantially horizontal to a rightward upward direction in the figure (see FIG. 2). It When the inclination angle is small and the lower end of the tongue portion 13b of the shielding member 13 is above the rotation center 5a of the rotary cleaning body 5, in the case where the rotary cleaning body 5 is in the rotational position as shown in FIG. In addition, in the drawing of the rotation center 5 a, the intake air in the direction of the arrow (nu) emitted from the upper right portion in the normal direction of the rotary cleaning body 5 changes its direction so as to follow the air flow direction (f) at the air flow passage port 14. Therefore, the rotary cleaning body 5
In the figure, a clockwise rotating torque is applied to.

At this time, when the air flow direction (f) is substantially horizontal, a rotational torque in the opposite direction is given to the rotary cleaning body 5 in accordance with the change in direction from the discharged angle d to the horizontal. Further, when the rotary cleaning body 5 rotates in the direction of arrow E from the state of the drawing, the intake air in the direction of arrow (wa) emitted from the upper right portion of the rotation center 5a in the normal direction of the rotary cleaning body 5 in the figure. Since it advances in the direction of the arrow (g) along the substantially cylindrical surface 13a of the shielding member 13, the rotary cleaning body 5 is
Provides counterclockwise rotation torque. Therefore, during the rotation of the rotary cleaning body 5, there is a rotational position of the rotary cleaning body 5 that gives a rotational torque in the opposite direction, and the maximum rotational torque cannot be obtained, and the rotation becomes unstable.

When the lower end of the tongue portion 13b of the shield member 13 is below the rotation center 5a of the rotary cleaning body 5, the rotation center 5a is discharged from the upper right portion in the normal direction of the rotary cleaning body 5 in the figure. The intake air always advances in the counterclockwise direction in the drawing along the substantially cylindrical surface 13a of the shielding member 13 (see FIG. 2), and the intake air discharged from almost all the rotary cleaning bodies 5 is the same as the rotary cleaning body 5. Since the rotational torque is applied in the direction, the rotational torque can be always and stably held at the maximum, so that the lower end of the tongue portion 13b of the shielding member 13 is preferably below the rotational center 5a of the rotary cleaning body 5. .

The tongue portion 13b of the shielding member 13 is shown in FIG.
In the case of the flat shape or the pointed shape as shown in (a) and (b) of FIG.
Disturbance near b increases noise during operation, so a smooth curved surface as shown in FIG. 2 is preferable.

[0034]

According to the first aspect of the present invention, since the rotary cleaning body can be rotated by the intake air without using a turbine, the number of parts can be reduced, the suction port body can be made smaller and lighter and the cost can be reduced. It is possible to plan.

According to the second aspect of the present invention, since the intake air discharged from the rotary opening gives the rotary cleaning member the rotary torque in the same direction, it is possible to obtain a strong rotary torque.

According to the third aspect of the present invention, it is possible to reduce the turbulence of the air flow in the intake path and reduce the noise.

[Brief description of drawings]

FIG. 1 is a plan view showing a suction port body according to the present invention.

FIG. 2 is a cross-sectional view showing a suction port body according to the present invention.

FIG. 3 is a side view showing a suction port body according to the present invention.

FIG. 4 is a perspective view showing a rotary cleaning body according to the present invention.

FIG. 5 is a cross-sectional view showing a rotary cleaning body according to the present invention.

FIG. 6 is a diagram for explaining the suitability of the configuration of the shielding member when implementing the present invention.

FIG. 7 is a diagram for explaining the suitability of the configuration of the shielding member when implementing the present invention.

[Explanation of symbols]

1 Suction mouth 2 upper case 3 lower case 5 rotating cleaning body 13 Shielding member 15 Dust suction opening 16 air intake 31 brush 32 moving fan 33 Rotating opening

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-28630 (JP, A) JP-A-52-50730 (JP, A) JP-A-5-176870 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A47L 9/04

Claims (4)

(57) [Claims] 1. A tubular body having a hollow interior, a brush projecting from a tubular body surface of the tubular body to scrape dust by rotation of the tubular body, and the tubular body surface of the tubular body. From the inside of the tubular body, having a plurality of moving blade fans protruding from and an opening provided between the moving blade fans adjacent to each other.
By releasing air through the opening,
A rotary cleaning body that applies a rotational torque with a rotor blade fan, a shielding member that covers the rotary cleaning body in an arc shape, a dust suction opening that absorbs dust, and an intake air that is capable of inflowing outside air and is different from the dust suction opening. An inlet, and intake air flowing from the intake opening is discharged from the inside of the tubular body through the opening ,
A suction port body for an electric vacuum cleaner, wherein a rotary torque is applied to the rotary cleaning body by a moving blade fan to rotate the rotary cleaning body. 2. A tubular body having a hollow inside, and a tubular body of the tubular body.
Dust is scratched by the rotation of the tubular body by protruding from the surface of the tubular body.
Brush up and normal direction extending in the longitudinal direction of the tubular body
It is projected from the surface of the cylindrical body inclining in one direction rather than the direction
Install between multiple blade fans and the adjacent blade fans.
And an opening formed in the cylindrical body.
Air is released through the mouth to allow the rotor blades to
A rotary cleaning body that applies a rotational torque with a fan, a shield member that covers the rotary cleaning body in an arc shape, a dust suction opening that absorbs dust, and an intake port that is capable of inflowing outside air and is different from the dust suction opening.
And the intake air flowing in from the intake port is
From the inside through the opening, the rotor fan
A suction port body for an electric vacuum cleaner, characterized in that the rolling cleaning body is rotated . 3. The shield member is electrically charged from the dust suction opening.
The intake passage leading to the main body of the vacuum cleaner is rotated by rotating the rotary cleaning body.
2. The shield according to claim 1, which is shielded below the center.
Alternatively, the suction port body for the electric vacuum cleaner according to claim 2 . 4. The shield member shields the intake path.
A curved surface is formed in the intake direction near the
The suction port body for an electric vacuum cleaner according to claim 3 , wherein the suction port body is provided.