JPH08509A - Vacuum cleaner mouthpiece - Google Patents

Abstract

PURPOSE:To provide a suction port capable of uniformly scarping up dust on a carpet by providing a brush band piece made of bristle woven cloth at a position intersecting orthogonally to confronting blades provided along the outer peripheral longitudinal direction of a rotor and a rotary cleaner provided with the brush part of the brush band piece in a rotational direction. CONSTITUTION:A groove part 21a twisted by 90 deg. extending over from one terminal part to the other terminal part along the axis of the rotor 21 is provided on the outer periphery of the rotor 21, and also, the rotor 21 is provided with four stripes of groove parts 21a straddled by 90 deg. when observing from the cross-section of the rotor 21. The groove part 21a supports the base part of the blade 26 of flat shape having flexibility by inserting the base part, and bristles 22 of the bristle woven cloth is fixed on the groove part confronting with this insertion part by a fixing means on the rotational direction side of the flat part 28 of the blade, and the base part 27 of the blade 26 can be supported by insertion. The tip part of the blade 26 of the rotary cleaner 20 is warped by abutting with a carpet plane, and sand and dust on the carpet can be floated by exciting the carpet plane by the reaction force of the blade 26 in a moment when it is separated from the carpet plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cleaning member in an electric vacuum cleaner, which has an improved dust collecting ability on a cleaning surface.

[0002]

2. Description of the Related Art A suction port of a conventional vacuum cleaner is disclosed in Japanese Patent Laid-Open No. 2-1
As described in Japanese Patent No. 31728, a plurality of protruding strips made of a flexible member is provided on the outer circumference of the rotating body.

Further, the one disclosed in Japanese Patent Laid-Open No. 62-284625 has a structure in which a brush made of a soft material having a large number of protrusions is arranged on the outer circumference of the rotating body.

[0004]

SUMMARY OF THE INVENTION
As described in JP-A-2-131728 and JP-A-62-284625, a brush structure having a large number of flexible protrusions is
It is easy to scratch the lint and hair scattered on the carpet and catch dust, but the hair and lint that are entangled in the fibers of the carpet,
With respect to fibrous dust such as cotton dust, the protrusion itself has a low frictional force, and thus has a weak peeling force, and thus does not float above the carpet surface and is difficult to catch dust. Further, since the protrusions are provided intermittently, there is a drawback in that the protrusions do not come into contact with the carpet surface and uneven collection occurs. It is an object of the present invention to eliminate these drawbacks and to provide a suction port for an electric vacuum cleaner having a rotary cleaning body which has a uniform effect of scraping up dust on a carpet.

[0005]

In order to achieve the above object, a plurality of scraping members are provided on the outer circumference of a rotary member.

[0006]

According to the present invention, the rotary cleaning member formed on the outer periphery of the rotary member is mixed with the brush and the blade, and the rotary cleaning member is brought into continuous contact with the dust on the cleaning surface in succession as the rotary cleaning member rotates. Since a stable scraping action is obtained, a high dust separation action occurs, and the suction airflow from the fan motor in the electric vacuum cleaner spreads into the suction port, and the suctioned airflow causes the dust that has separated and floated as described above to collect in the electric vacuum cleaner. Captured indoors.

[0007]

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

The mouthpiece 1 has an outer casing formed by the upper case 2, the lower case 4 and the mouthpiece cover 14, and a bumper 17 is provided between the lower case 4 and the upper case 2 and the mouthpiece cover 14 to prevent damage to furniture or the like. A casing 18 which is rotatable up and down is provided at the rear end portion, and a rotatable suction joint 19 is connected to the tip thereof. A horizontally long suction port 6 is located below the front side of the lower case 4.
The pressure control plates 10 and 11 which are flexible and which maintain the suction pressure inside the suction port 6 are arranged in the lateral direction before and after the suction port 6. The lower case 4 has the roller 12 on the lower front side.
A wheel 13 is provided on the lower rear side, and the roller 12 and the wheel 13 maintain a constant distance between the lower surface of the lower case 4 and the floor surface. There is no such thing. The mouthpiece cover 14 is
Opening and closing levers (not shown) are provided on both sides, and by operating the opening and closing levers, the upper and lower cases 2 and 4 can be detachably attached. Inside the suction port 6, a suction chamber 7 for rotatably rotatably supporting the rotary cleaning body 20, dust introduced from the suction port 6 to the casing 18 and the suction joint 19, and a power source for the rotary cleaning body 20. A nozzle 4 that blows into the turbine chamber 5 dust that has entered the turbine chamber 5 that houses the impeller 34 that becomes
6, a bypass nozzle 47 that serves as a bypass passage in the turbine chamber 5 that is a suction passage, a bypass lever 48 that opens and closes the nozzle 47, an arm 49 that is pivotally supported by the bypass lever 48, and a carpet that matches the surface to be cleaned. There is a switching lever 54 that can switch between the floor and the tatami mat with one touch.

An impeller 34 arranged in the turbine chamber 5 has a plurality of blades 35 and is a symmetrical runner L3.
5a and the runner R35b are integrally attached to the turbine shaft 38 by the flounder 39 formed on the turbine shaft 38, the ring 40 fixed to the turbine shaft 38, and the push nut 41. Further, the turbine shaft 38 is received by a ball bearing 43 inserted in a bearing holder 42, and a polyslider washer (not shown) is provided between the ball bearing 43 and the ring 40, and an end of the ball bearing 43 and the turbine shaft 38 is provided. Drive pulley 41
It has. The rotational force of the impeller 34 is the drive pulley 37.
And the belt 5 hung on the pulley 32 of the rotary cleaning body 20.
2 is transmitted to the rotary cleaning body 20. To lock the impeller 34 in the suction port 1, the bearing holders 42 are fixedly installed by incorporating the bearing holders 42 into the pedestals 3a and 3b protruding from the lower case 4 and the upper case 2.

A nozzle 46 for blowing the dust sucked from the suction port 6 and a suction airflow for rotating the impeller 34 into the turbine chamber 5 is provided on the same plane as the rear partition wall 8 of the suction chamber 7, A nozzle port 50 that blows the suction airflow to the impeller 34 and another nozzle port 51 that does not blow the impeller 34 in parallel with the nozzle port 50 are provided around the matching portion of the runner L35a and the runner R35b. A switching lever 54 for switching between opening and closing of the nozzle port 51 is provided slidably, and switching can be performed by an operating knob 56 protruding from the upper case 2.

The rotary cleaning body 20 of the present invention will be described with reference to FIGS. 3, 4 and 5. A pulley 31 having a flange portion 31a integrated with a shaft 33 is press-fitted and fixed to both ends of the rotary cleaning body 20, and a tooth profile 32a is formed on one pulley 32 so as to match the tooth profile of the belt 52. Made of A bearing 30 is rotatably supported while being inserted into the ends of the pulleys 31 and 32. Here, as shown in FIG. 1, the bearing 30 of the rotary cleaning body 20.
Is inserted into the inner wall 9 of the suction port 6 of the suction port 1, so that the rotary cleaning body 20 is rotatably supported with respect to the suction port 1. Here, by stretching the belt 52 around the drive pulley 37 that is previously connected to the impeller 34 and the tooth profile 32a of the pulley 32, the rotational power from the impeller 34 is transferred to the rotary cleaning body 2.
It is configured to be transmitted to 0.

The rotary cleaning member 20 has the flange portion 31.
a, a pulley 31, 32, a bearing 30, and the like, a rotation support portion and a transmission portion, and a rotating body 21.
Is a synthetic resin foam such as polystyrol
It has a circular cross section, is light in weight, and is molded by extrusion molding means. Here, a blade 26 made of a flexible member for scraping up dust on the cleaning surface and having a wiping action, and a groove 21a for vertically supporting the brush 22 are also formed. The groove 21a extends from one end to the other end of the rotor 21 along the axis of the rotor 21, and the groove 21a twisted by 90 degrees is provided on the outer periphery of the rotor 21. Further, the groove portion 21a has four groove portions 21a distributed 90 degrees when viewed from the cross section of the rotating body 21. The groove portion 21a inserts and supports the base portion 61a of the blade 26 on a flexible flat plate made of soft vinyl chloride or the like. In the groove portion 14a facing the insertion portion, the brush 2 made of a bristle cloth is provided on the rotation side of the flat portion 28 of the blade 26.
Hold the 2 by fixing means such as adhesion or sewing,
The base 27 of the blade 26 is inserted and supported. The brush 22 made of bristle woven fabric is composed of a flat and flexible holder 23 such as a textile fabric, and the holder 23 has short bristles 24.
Are closely arranged in parallel.

The description will be given with reference to FIG. FIG. 5 is a partially enlarged view of the partial brush 22 of FIG. 4, and the bristles 24 are provided with a brush 22 having an inclination angle θ in the direction of eating when contacting the surface to be cleaned, or as a resistance. It may be provided in a difficult direction, or may be selected in consideration of the torque of the drive source of the suction port 1 and the like. Further, the bristles 24 themselves may be vertically raised bristles 24 instead of being inclined, and if the bristles 24 are produced by means of production means and a simple process, the characteristics of each are taken advantage of and selected appropriately. It's good. As a result, the rotary cleaning body 20 has two blades 26 and two brushes 22 that are 90 degrees out of phase with each other, and the blades 26 or the brushes 22 having the same mass are provided in opposite directions.

That is, according to the present embodiment, first, when the suction port 1 is placed on the carpet surface and the electric power of the electric vacuum cleaner (not shown) is turned on, the fan motor (not shown) in the electric vacuum cleaner rotates and the suction air flow is increased. Then, the suction airflow spreads to the main body of the suction port 1, the impeller 34 rotates at a high speed, and the rotation is transmitted to the rotary cleaning body 20 by the belt 52 and rotated, so that the cleaning operation of the carpet or the like is started. During cleaning, the tip of the blade 26 of the rotary cleaning member 20 contacts the carpet surface and bends, and then the reaction force of the blade 26 that is bent at the moment of leaving the carpet surface vibrates against the carpet surface to remove dust inside the carpet. It is floated, sucked by the suction airflow of the suction port 1, and collected in a dust collection chamber (not shown) in the electric vacuum cleaner through an extension pipe and a hose (not shown).

Next, when the tip of the brush 22 also comes into contact with the carpet surface,
Bend. At this time, the frictional force of the brush 22 spreads to the lint, hair, and cotton dust on the carpet surface, and the dust has a high peeling action and is separated from the carpet surface by the scraping action by the rotating centrifugal force. , Together with the suction airflow, is collected in the electric vacuum cleaner. Moreover, the brush 2 has an appropriate rigidity due to the rotating centrifugal force.
Since it is applied to No. 2, the scraping force is increased, no dust remains on the carpet surface, and fibrous dust such as lint and hair is sucked without being wound around the brush 22. That is, the brush 22
The pile of itself is short, it does not bind to the fibrous dust, and the rotary cleaning body 20 itself is rotating at a high speed. Even if the brush 22 adheres to the brush 22, it is released when the centrifugal force is brought into contact with the cleaning surface, so that the maintenance of the brush 22 is unnecessary. This is because the conventional mouthpiece is disclosed in JP-A-2-131728 and JP-A-62-62.
In the rotary cleaning body described in Japanese Patent Publication No. 284625, in which a protrusion is provided, the frictional force is small against lint, hair, cotton dust, etc. on the carpet surface, and therefore it is difficult to peel off and the protrusion Since it is difficult to release by reaction force alone, the collection ability is low. In this respect, the rotary cleaning body 20 of the present invention has an excellent aspect.

When cleaning wooden floors and tatami floors,
The height of the brush 22 is made higher than that of the blade 26, and the brush 2
If the two tip portions are brought into contact with each other, it is possible to obtain a wiping action on the above-mentioned cleaning surface, and it is possible to perform fine dust suction and wiping operations at the same time without requiring a wiping operation with a rag after cleaning, and thus cleaning efficiency. It has an excellent surface.

Next, another embodiment will be described with reference to FIG.

FIG. 6 is a sectional view showing an embodiment of the rotary cleaning body 20a of the present invention. Unlike the configuration of the rotary cleaning body 20 of FIG. 4, only the brush 22a is provided, which is on the carpet surface. This is a product that further enhances the scraping action and improves the collecting ability for dust that is formed by lint and hair that are tightly entangled in the carpet fiber.

That is, the brush 22a is further brought into contact with dust in order to further separate the dust from the carpet surface such as lint, hair and cotton dust. The effect of collecting the fiber dust such as dust and thread dust and hair becomes remarkable.

Further, by setting the height of the brush 22a so as to project from the bottom surface of the suction port 1 in the same manner as in the above-mentioned construction, a high wiping effect can be obtained in flooring wooden floor and tatami cleaning.

Further, as a further development of this configuration, as shown in FIG. 7, the height of each brush 22c that is 90 degrees in phase with the opposing brush 22b is changed so as to correspond to the rugged carpet surface. It is possible to provide a suction port according to the application by selecting a structure having one surface having an excellent collection effect in which the scraping action spreads to all surfaces.

[0022]

According to the present invention, as described above,
It has a high ability to collect dust such as lint and hair that are tightly entangled on the carpet surface, making it unnecessary to repeatedly and repeatedly clean the same cleaning surface, which reduces user fatigue during cleaning work. High efficiency. Therefore, the operating time of the vacuum cleaner is shortened, and the utility cost is high, resulting in synergistic effects such as reduction of electricity bill. Also, when cleaning flooring wooden floors and tatami mats, the dust absorption of fine dust and the wiping action of the brush can proceed at the same time, resulting in high cleaning efficiency.

[Brief description of drawings]

FIG. 1 is a plan view of a part of a cross section excluding an upper case of a suction port and a suction port cover showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is an external view of a partial cross section of the rotary cleaning body of the present invention.

FIG. 4 is a vertical sectional view of a rotary cleaning body according to an embodiment of the present invention.

FIG. 5 is a vertical sectional view of a rotary cleaning body showing another embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view of a rotary cleaning body showing another embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view of a rotary cleaning body showing another embodiment of the present invention.

[Explanation of symbols]

1 ... Suction port, 20, 20a, 20b ... Rotating cleaning body, 21 ...
Rotating body, 22, 22a, 22b, 22c ... Brush strip.

Claims (4)

[Claims] 1. A suction port having a rotary cleaning member rotatably disposed by a drive source, wherein the rotary cleaning member is rotatably installed in the suction port, and a longitudinal direction of an outer circumference of the rotary member. Each blade made of a flexible member for scraping up the dust on the surface to be cleaned is provided in opposition to each other, and a brush strip made of bristle woven cloth is provided at a position 90 degrees in phase with the blade, respectively, on the outer circumference of the rotary body. Direction, and
A suction mouth of an electric vacuum cleaner, comprising a rotary cleaning body having a brush portion of a brush strip on a rotation direction side. 2. A suction port of an electric vacuum cleaner according to claim 1, further comprising a rotary cleaning body having a plurality of brush strips made of bristle woven cloth arranged along a longitudinal direction of an outer circumference of the rotary body. 3. The rotary cleaning body according to claim 1, wherein a brush strip made of a bristle woven fabric is provided on the rotational direction side of each blade made of a flexible member by a fixing means such as bonding or sewing. The mouthpiece of an electric vacuum cleaner characterized in that. 4. The rotary cleaning body according to claim 1, wherein the brush strips facing each other and the brush strips having different phases from each other have different projecting heights. Vacuum cleaner mouthpiece.