JP3178120B2 - Vacuum cleaner mouthpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mouthpiece of a vacuum cleaner, and more particularly to a method of mounting wheels for traveling on a floor.

[0002]

2. Description of the Related Art Wheels of a mouthpiece of a conventional vacuum cleaner push both ends of an axle through which the wheels pass into a groove provided below a lower case, and are fixed by claw-shaped protrusions provided in the groove. It was to do.

[0003]

The wheel of the suction body of the conventional vacuum cleaner is pushed into a groove provided below the lower case,
Since the wheels are fixed, there is a problem that the wheels and the axles through which the wheels pass cannot have functions.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a mouthpiece of a vacuum cleaner in which wheels and an axle through which the wheels pass can have functions.

[0005]

In order to achieve the above object, the present invention is characterized in that an outer case is formed by arranging an upper case in a lower case having a suction port on a lower surface, and forming an outer shell inside the lower case.
A rotary brush provided at the suction port;
-An air turbine that drives the brush and the air turbine
And a suction passage communicating with the suction port.
And a car disposed below the lower case
In the mouthpiece of the vacuum cleaner including the wheel, at the position where the wheel of the lower case is disposed, axle guide holes are formed on both sides of the wheel so that the axle of the wheel can freely move up and down, The axle is penetrated through the axle guide hole and the wheel, and both sides of the axle are disposed so as to lie over the axle guide hole. Forming a wall to prevent the mouthpiece
Inside, a bypass passage communicating with the turbine chamber is provided.
And through an arm attached to the axle
The bypass passage in conjunction with the vertical movement of the wheels.
It has a bypass valve that opens and closes the road .

[0006]

According to the present invention, axle guide holes are formed on both sides of the lower case at positions where the wheels are disposed so that the axles of the wheels can move up and down, and the axles are connected to the axle guide holes. and with passing the said wheel, a to its both sides arranged so as according to the axle guide hole so as to prevent the omission of the axle by a wall formed in the upper case, and further attached to axle
Since in conjunction with a vertically movable wheel and the bypass valve through a chromatography arm, in addition to assembling performance improves, the rotor
The amount of air flowing into the turbine that drives the Lee brush can be adjusted, and the function of the suction body can be improved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The mouthpiece 1 has an outer shell composed of an upper case 2 made of synthetic resin, a lower case 3 made of synthetic resin, and an inlet cover 4 made of synthetic resin.
A bumper 5 for preventing damage to furniture and the like is provided between the suction port cover 4 and a synthetic resin casing 6 rotatable up and down at a rear end portion, and a rotatable synthetic resin suction port is provided at the front. The joint 7 is connected.

The lower case 3 has a horizontally long suction port 8 formed at the front lower side, and has flexibility and suction ports 8 in front of and behind the suction port 8.
Pressure control plates 9 and 10 (thin plate-like elastic material) for maintaining the suction pressure in the inside are disposed in the horizontal direction, and further, a sticking plate 63 made of polyolefin resin having excellent slipperiness is provided behind the pressure control plate 10.
Is pasted. The lower case 3 has an intake port 70 provided with a filter 69 at the rear, and the lower case 3 has a roller 11 at a lower front side and wheels 12 and 13 at a lower rear side, respectively. A fixed distance is created between the lower surface of the lower case 3 and the floor by means of 12, 13. A decorative cover 60 is attached to the upper part of the upper case 2 so as to form a part that has been settled down. The suction port cover 4 has opening and closing levers 61 and 62 made of synthetic resin on both sides, and can be removed from the upper case 2 and the lower case 3 by operating these levers. Inside the mouthpiece 1,
Rotary brush chamber 1 for storing rotary brush 14
5. a turbine chamber 17 for accommodating an air turbine 16 serving as driving means for the rotary brush 14 while guiding dust entering through the suction port 8 to the casing 6 and the suction joint 7;
A nozzle 18 that blows dust entering through the suction port 8 and wind for rotating the air turbine 16 into the turbine chamber 17;
A bypass nozzle 19 serving as a bypass passage in the turbine chamber 17 serving as a suction passage, a bypass lever 20 made of synthetic resin for opening and closing the bypass nozzle 19, an arm 21 rotatably supported by the bypass lever 20, and a cleaning surface. There is a switching lever 22 made of synthetic resin that can switch wiping from carpet with one touch.

The rotary brush 14 is provided with a flexible blade 23 having a high dust-raising effect and a brush 24 having a high wiping effect made of a high-density nylon fiber or the like on the outer periphery of a rotary core 25 in the axial direction. The rotary core 2 is provided in a groove twisted and extended 360 °, and has a pulley 26 having a gear and the like on one side and a flange 27 on the other side.
The shaft 64 is press-fitted into both ends of the shaft 5, and is rotatably supported by a slide bearing 28. A bearing cover 29 into which the slide bearing 28 is press-fitted is held by a pair of opposed support ribs 30 and 31 provided in the lower case 3. ing. Here, when the mouthpiece 1 is placed on the cleaning surface, the barge 24 is set to a size that comes into contact with the cleaning surface, and the blade 23 is set to a size that opens a slight gap from the cleaning surface. When cleaning, the wooden floor can be wiped without damaging it.

The synthetic resin air turbine 16 (Pelton turbine) disposed in the turbine chamber 17 has a plurality of blades 32, and symmetrically separates the runner left 33 and runner right 34 from the runner left 33 and runner left 33. The convex portion 35 and the concave portion 36 provided opposite to the right 34 are aligned with each other, and a knurl 38 formed on the turbine shaft 37, a U-shaped ring 39 fixed to the turbine shaft 37 and a push nut 40 are integrally formed. Attach to The turbine shaft 37 is received by ball bearings 43 and 44 inserted into a bearing holder 45, and a washer 46 is provided between the ball bearing 43 and the U-shaped ring 39.
Between the ball bearing 44 and the drive pulley 41 pressed into the end of the turbine shaft 37.
7 is provided. The rotational force of the air turbine 16 is transmitted to the rotary brush 14 by a belt 42 hung on the drive pulley 41 and the pulley 26 of the rotary brush 14. The locking of the air turbine 16 into the suction body 1 is as follows.
By incorporating the bearing holder 45 into the receiving tables 48 and 49 projecting from the lower case and the upper case, it is prevented from moving.

The nozzle 18 for blowing the dust blown from the suction port 8 and the wind for rotating the air turbine 16 into the turbine chamber 17 is provided on the same surface as the rear partition wall 52 of the rotary brush chamber 15. Runner left 3
The main nozzle 50 and the main nozzle 5 that blow the suction airflow to the air turbine 16 around the matching portion between the main nozzle 3 and the runner right 34
There is another auxiliary nozzle 51 that does not blow on the air turbine 16 in parallel with 0. A switching lever 22 having an upper surface that forms a curved surface 71 is slidably provided for switching the opening and closing of the sub-nozzle 51 and a switching lever mounting portion 75 of the upper case.
Switching can be performed by the operation knob 53 that is more protruding.

A plurality of suction passages 55 are provided on a side wall 54 of the turbine chamber 17 for housing the air turbine 16 which faces the side surface of the air turbine 16 and serves as a bypass passage. A bypass nozzle 19 is provided so as to be vertically slidably fitted therein. The bypass nozzle 19 has a plurality of suction passages 56 adjacent to and adjacent to the bypass nozzle 19 and is rotatably supported by a rib 57 projecting from the lower case 3. A lever 20 is provided.

The bypass lever 20 is interlocked with an axle 58 which is configured to be vertically movable and penetrates the wheels 12 through an arm 21 which is rotatably supported.
When the lower case 3 is provided with ribs 67 and 68 for preventing the wheel 12 from coming off from the lower case 3, and the spring 12 is in a free state, that is, when the mouthpiece 1 is separated from the floor, the wheels 12 are always opened in a direction in which the bypass passage opens. It is urged from the suction body 1 in the direction of traveling.

The bypass nozzle 19 has a projection 65 on the surface adjacent to the bypass lever 20. The projection 65 overlaps the suction passage 55 of the bypass nozzle 19 and the suction passage 56 of the bypass lever 20, and the bypass passage is opened. The bypass lever 20 is provided at a distance from the bypass lever 20 in a direction in which the bypass lever 20 is urged by a spring 59 to slide.

In assembling the mouthpiece 1, pressure control plates 9 and 10 (a thin elastic material) are horizontally disposed below, and a polyolefin resin material having excellent slipperiness is provided behind the pressure control plate 10. Affixing plate 63 of roller 1
1 and a bumper is mounted on the outer periphery of a lower case provided with wheels 13 on the rear lower side. The wheels 12 pass through the axle 58 through the notch 73 in the wall provided at the casing 6 mounting position, and the axle guide holes 74 and The wheel 12 is passed through, and both ends of the axle 58 are attached to the axle guide hole.

Above the lower case 3, an air turbine 1
The rotary brush 14 and the rotary brush 14 are assembled together by a belt 42, and the switching lever 22 is installed so as to be slidable. The nozzle 18 and the bypass nozzle 19 are fitted so as to be slidable up and down.
The arm 21 is rotatably supported on a shaft, and the bypass lever 20 to which the spring 59 is attached is attached to the rib 57 of the lower case 3.
At this time, the bypass lever 20 is engaged with the projection 65 provided on the bypass nozzle 19 and incorporated.

Further, the lower case 3 in which the suction joint 7 is rotatably mounted is covered with the upper case 2 and the suction port cover 4 and assembled, and the upper case 2 has a cutout 73 of the lower case 3. Opposing walls 72 are provided to prevent the axle 58 from coming off after assembly.

In such a configuration, when cleaning the wooden floor, the switching lever 22 is moved outward and the two main nozzles 5 are moved.
Dust is sucked into the turbine chamber by the sub nozzle 51. At this time, since the air blown from the sub-nozzle 51 does not blow to the air turbine 16, the amount of air passing through the main nozzle 50 is reduced, and the rotation speed of the air turbine 16 and the rotary brush 14 using the air turbine 16 as a driving source are reduced. The rotation speed of the rotary brush 14 decreases, and the rotary brush 14 rotates at a rotation speed (2,500 to 3000 r / min) suitable for wiping. When cleaning the carpet, the switching lever 22 is moved inward, and the main nozzle 50 for blowing the air to the air turbine 16.
Inhale dust only from Since all the wind sucked in by the main nozzle 50 is blown to the air turbine 16, the air turbine 16 and the rotary brush 14 driven by the air turbine 16 rotate at a relatively high speed, and the number of rotations suitable for cleaning on the carpet (3000-3500r / m
in) is obtained. Therefore, when the mouthpiece 1 is on the surface to be cleaned, the switching lever 22 enables cleaning suitable for the surface to be cleaned. At this time, the axle 5 is installed so that it can move up and down
8, the bypass nozzle 19 is always closed as shown in FIG.
Air enters the turbine chamber 17 only from the nozzle 18. When the mouthpiece 1 is separated from the surface to be cleaned, as shown in FIG. 8, the axle 58 to which the arm 21 rotatably supported by the bypass lever 20 is attached projects toward the floor surface by the spring 59. Since the suction passage 55 of the bypass nozzle 19 and the suction passage 56 of the bypass lever 20 overlap each other to form a bypass passage, wind that does not blow to the air turbine 16 flows in, and the amount of air entering from the nozzle 18 decreases. The rotation speed of the rotary brush 14 driven by the air turbine 16 is about 2500-3000 r /
Since the air inlet 1 is lifted, it is possible to avoid generating a loud noise caused by the air turbine becoming an air load.

[0019]

As described above, according to the present invention, axle guide holes are formed on both sides of the lower case at positions where the wheels are disposed so that the axles of the wheels can freely move up and down. ,
While passing the axle through the axle guide hole and the wheels,
Both sides are disposed so as to cover the axle guide hole, and the wall formed in the upper case prevents the axle from falling off.
Since in conjunction with a vertically movable wheel and the bypass valve via an arm attached to the axle in addition to the assembling performance improves, adjusting the amount of air to flow into the turbine to drive the rotary brush And the function of the mouthpiece can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an axle part that can freely float up and down.

FIG. 2 is a cross-sectional view of a built-in portion of an axle that can freely float up and down.

FIG. 3 is a plan view showing a cross section of a part excluding an upper case of the mouthpiece showing one embodiment of the present invention.

FIG. 4 is a sectional view perpendicular to the turbine shaft of FIG. 3;

FIG. 5 is a plan view when the upper case of the mouthpiece in FIG. 3 is attached.

FIG. 6 is a plan view seen from the back surface of FIG. 3;

FIG. 7 is a cross-sectional view of the bypass passage portion in a state where the bypass passage is closed.

FIG. 8 is a cross-sectional view of the bypass passage portion in a state where the bypass passage is opened.

FIG. 9 is a cross-sectional view of the bypass passage portion according to the embodiment of the present invention in a state where the bypass lever is locked on the protrusion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Suction body, 12, 13 ... Wheel, 14 ... Rotary brush, 16 ... Air turbine, 18 ... Nozzle, 19 ... Bypass nozzle, 20 ... Bypass lever, 21 ... Arm, 5
8 ... axle, 73 ... lower case notch, 72 ... upper case wall,
74 ... axle guide hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-130629 (JP, A) JP-A-61-6353 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/02

Claims (1)

(57) [Claims] 1. An outer casing is provided by disposing an upper case on a lower case having a suction port on a lower surface, and is provided inside the suction port inside.
Rotary brush and driving the rotary brush
An air turbine and a housing for the air turbine
A turbine chamber having a suction passage communicating with the suction port,
In the mouthpiece of a vacuum cleaner having a wheel disposed below the lower case, the wheel is disposed at a position where the wheel of the lower case is disposed so that an axle of the wheel can move up and down. Axle guide holes are formed on both sides of the axle, the axle is penetrated through the axle guide holes and the wheels, and both sides of the axle guide holes are disposed so as to cover the axle guide holes. the omission of the lateral direction of the axle to form a wall to prevent when partnered, inside of the suction body, communicating with the turbine chamber by
A pass passage is formed and an axle attached to the axle is
In conjunction with the vertical movement of the wheels through the
A mouthpiece for a vacuum cleaner, comprising a bypass valve for opening and closing a bypass passage .