JPH06133906A - Suction mouth of electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To equip wheels and axle with a function by structuring the wheels and axle penetrating the same so that they can make play up and down. CONSTITUTION:To assemble a suction mouth having a bypass, wheels 12 are mounted by threading an axle 58 from a notch 73 in a wall provided in the casing mounting position, allowing the axle 58 to penetrate an axle guide hole 74 and the wheels 12, and hitching the two ends of the axle 58 at the guide hole. The axle 58 is interlocked with a bypass lever 20, and the bypass is opened and closed when the axle 58 and wheels 12 move up and down within the hole 74. An upper case 2 is provided with a wall 72 mating with notch 73 provided in a lower case 3, and after the assembly, the axle 58 is prevented from slipping off. Thereby the wheels are made possible to make play up and down so that the axle and wheels can be equipped with a function.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A wheel of a suction body of a conventional electric vacuum cleaner has both ends of an axle through which the wheel penetrates, and is pushed into a groove provided below a lower case, and fixed by a claw-shaped projection provided in the groove. Was to do.

[0003]

The wheel of the suction body of the conventional electric vacuum cleaner is pushed into a groove provided below the lower case,
Since it is fixed, there is a problem that the wheel and the axle through which the wheel penetrates cannot have a function.

In view of the above problems, it is an object of the present invention to provide a suction body of an electric vacuum cleaner which allows the wheel and the axle through which the wheel penetrates to have a function.

[0005]

According to the suction body of the vacuum cleaner of the present invention, the wheel is mounted by inserting the axle through the notch formed in the side wall of the lower case located at the wheel mounting portion. Is mounted by penetrating the wheel.

[0006]

According to the present invention, the wheel is mounted by inserting the axle through the notch provided in the side wall of the lower case, which is located at the wheel mounting portion, and the axle penetrates through the wheel to mount the wheel. Can be floated up and down,
By providing the upper case with a wall opposite to the cutout provided on the side wall of the lower case, the suction body of the electric vacuum cleaner is provided so that the axle does not come out of the cutout after the suction body is assembled. can do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The suction body 1 forms an outer shell by an upper case 2 made of synthetic resin, a lower case 3 made of synthetic resin, and a suction port 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 the suction port cover 4, a vertically rotatable synthetic resin casing 6 is provided at the rear end portion, and a rotatable synthetic resin suction port is provided at the end thereof. The joint 7 is connected.

The lower case 3 has a horizontally long suction port 8 formed on the lower front side thereof, and has flexibility in front of and behind the suction port 8 and the suction port 8
The pressure control plates 9 and 10 (thin elastic material) for holding the suction pressure in the inside are arranged in the lateral direction, and further, behind the pressure control plate 10, a sticking plate 63 made of a polyolefin resin having excellent slipperiness.
Is pasted. An intake port 70 having a filter 69 is provided at the rear part of the lower case, and the lower case 3 is provided with a roller 11 on the lower front side and wheels 12, 13 on the lower rear side, respectively. A fixed gap is formed between the lower surface of the lower case 3 and the floor surface by the numbers 12 and 13. On the upper part of the upper case 2, there is formed a part in which the decorative cover 60 is attached. The suction port cover 4 has opening / 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 them. Inside the mouthpiece 1,
Rotary brush chamber 1 for storing the rotary brush 14
5, a turbine chamber 17 for accommodating the air turbine 16 which serves as a drive means for the rotary brush 14 while guiding the dust entering from the suction port 8 to the casing 6 and the suction port joint 7;
Nozzle 18 for blowing dust entering through suction port 8 and wind for rotating air turbine 16 into turbine chamber 17.
A bypass nozzle 19 serving as a bypass passage in the turbine chamber 17 serving as a suction passage, a synthetic resin bypass lever 20 for opening and closing the bypass nozzle 19, an arm 21 rotatably supported by the bypass lever 20 on a shaft, and a surface to be cleaned. There is a synthetic resin switch lever 22 that can switch wipes from the 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 high-density nylon fiber or the like on the outer periphery of the rotary core 25 in the axial direction. The rotary core 2 has a pulley 26 having a gear or the like on one side and a flange 27 on the other side.
A shaft 64 is press-fitted at both ends of the shaft 5, and is rotatably supported by a slide bearing 28. A bearing cover 29 in which the slide bearing 28 is press-fitted is held by a pair of opposing support ribs 30 and 31 provided in the lower case 3. ing. Here, when the suction body 1 is placed on the cleaning surface, the brush 24 is set to a size that contacts the cleaning surface, and the blade 23 is set to a size that opens a slight gap with the cleaning surface. When cleaning, you can wipe the floor without damaging it.

The synthetic resin air turbine 16 (Pelton turbine) arranged in the turbine chamber 17 has a plurality of blades 32 and is formed by symmetrically dividing the runner left 33 and the runner right 34 into the runner left 33 and the runner. The knurl 38 formed on the turbine shaft 37, the U-shaped ring 39 fixed to the turbine shaft 37, and the push nut 40 are integrated so that the convex portion 35 and the concave portion 36 provided opposite to the right 34 are aligned with each other. Install on. The turbine shaft 37 is received by ball bearings 43, 44 inserted in 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.
Equipped with 7. The rotational force of the air turbine 16 is transmitted to the rotary brush 14 by a belt 42 wound around the drive pulley 41 and the pulley 26 of the rotary brush 14. Locking the air turbine 16 into the suction body 1
The bearing holders 45 are incorporated into the receiving pedestals 48 and 49 protruding from the lower case and the upper case to prevent movement.

The nozzle 18 which blows 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 plane as the rear partition wall 52 of the rotary brush chamber 15, and the air turbine 16 Runner left 3
3 and the runner right 34, the main nozzle 50 and the main nozzle 5 which blow the suction airflow to the air turbine 16 centering on the matching portion.
Another sub-nozzle 51 that does not blow on the air turbine 16 is provided in parallel with 0. A switching lever 22 that switches the opening and closing of the sub-nozzle 51 and has a curved surface 71 on the upper surface is provided slidably, and the switching lever mounting portion 75 of the upper case is provided.
Switching can be performed by the operation knob 53 that is further projected.

A plurality of suction passages 55 are provided on a side wall 54, which is a suction passage for dust entering from the suction port 8 and faces the side surface of the air turbine 16 of the turbine chamber 17 housing the air turbine 16, and serves as a bypass passage. The bypass nozzle 19 is provided so as to be slidable in the vertical direction, is adjacent to the bypass nozzle 19, has a plurality of suction passages 56 on the adjacent surface, and is rotatably supported by a rib 57 protruding from the lower case 3. A lever 20 is provided.

The bypass lever 20 is interlocked with a vertically floatable axle 58 penetrating the wheel 12 through an arm 21 which is rotatably supported.
The ribs 67 and 68 for preventing the wheel 12 from coming off from the lower case 3 are provided in the lower case 3 by a spring 59, that is, when the suction body 1 is separated from the floor surface, the wheel 12 is always opened in the direction in which the bypass passage opens. The mouthpiece 1 is urged toward the business trip.

The bypass nozzle 19 has a protrusion 65 on the surface adjacent to the bypass lever 20, and the protrusion 65 is in a state in which the suction passage 55 of the bypass nozzle 19 and the suction passage 56 of the bypass lever 20 overlap each other and the bypass passage is opened. The bypass lever 20 is provided at a distance from the bypass lever 20 in the sliding direction by being biased by the spring 59.

In assembling the suction body 1, pressure control plates 9 and 10 (thin plate-shaped elastic members) are arranged laterally below, and a polyolefin resin having excellent slipperiness is provided behind the pressure control plate 10. Stick the sticking plate 63 of the roller 1 on the lower front side.
1 and a bumper is attached to the outer periphery of a lower case having wheels 13 on the lower rear side. The wheels 12 pass through the axles 58 through the notches 73 in the wall provided at the casing 6 attachment position, and the axle guide holes 74 and , The wheel 12 is penetrated, and both ends of the axle 58 are engaged with the axle guide holes for attachment.

Above the lower case 3, the air turbine 1
6 and the rotary brush 14 are linked together by a belt 42, and the switching lever 22 is mounted so as to be slidable. The nozzle 18 and the bypass nozzle 19 are fitted so as to be vertically slidable, and adjacent to the bypass nozzle 19.
The arm 21 is rotatably supported, 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 assembled by being engaged with the protrusion 65 provided on the bypass nozzle 19.

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

In such a structure, when cleaning the wooden floor, the switching lever 22 is moved outward and the two main nozzles 5 are
0, the sub nozzle 51 sucks dust into the turbine chamber. 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 decreases, the rotation speed of the air turbine 16 and the rotary brush 14 driven by the air turbine 16 And the rotary brush 14 rotates at a rotation speed (2500 to 3000 r / min) suitable for wiping. When cleaning the carpet, the main nozzle 50 that pushes the switching lever 22 inward and blows air on the air turbine 16
Inhale dust only from. Since all the wind sucked 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 rotation speed suitable for cleaning on the carpet. (3000-3500r / m
in) is obtained. Therefore, when the suction body 1 is on the surface to be cleaned, the switching lever 22 can perform cleaning suitable for the cleaning surface. At this time, the axle 5 installed so that it can freely move vertically
By the bypass lever 20 linked with 8, the bypass nozzle 19 is always in the closed state as shown in FIG.
Air enters the turbine chamber 17 only through the nozzle 18. Further, when the suction body 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 is moved 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, air that does not blow on the air turbine 16 flows in, and the amount of air entering from the nozzle 18 decreases, so that the air turbine 16 and The rotation speed of the rotary brush 14 driven by the air turbine 16 is about 2500 to 3000 r /
Since it falls to min, it is possible to avoid the generation of a large noise due to the air load of the air turbine in the lifted state of the suction body 1.

[0019]

According to the present invention, the wheel is mounted by inserting the axle through the notch provided in the side wall of the lower case located at the wheel attachment portion, and the axle penetrates the wheel to attach the wheel. The axle and the wheels can be vertically floated, and the axle and the wheels can have functions. In addition, by assembling the suction body by providing the upper case with a wall facing the notch provided on the side wall of the lower case,
This has the great effect that the axle will not come out of the notch.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an axle part that is vertically floatable.

FIG. 2 is a cross-sectional view of an assembled portion of an axle that can float vertically.

FIG. 3 is a plan view showing a part of the suction member excluding the upper case according to an embodiment of the present invention in a sectional view.

4 is a cross-sectional view perpendicular to the turbine shaft of FIG.

FIG. 5 is a plan view when the upper case of the suction body is attached in FIG.

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

FIG. 7 is a cross-sectional view of the bypass passage portion with the bypass passage closed.

FIG. 8 is a cross-sectional view of the bypass passage portion with the bypass passage opened.

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

[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.

Claims (3)

[Claims] 1. A suction body of an electric vacuum cleaner, the exterior of which comprises a lower case, an upper case, and a suction port cover, and a plurality of wheels for traveling on the floor below the suction body. Is inserted into an axle from a notch provided in a side wall of the lower case located at a wheel attachment portion, and the axle is attached by penetrating the wheel. body. 2. The suction body for a vacuum cleaner according to claim 1, wherein the upper case has a wall facing a notch formed in a side wall of the lower case. 3. The suction body for an electric vacuum cleaner according to claim 1, wherein the axle has a certain range and is vertically floatable.