JPH02195927A - Floor suction tool of vacuum cleaner - Google Patents

Abstract

PURPOSE:To obtain a floor suction tool with excellent usability by forming a stirring projection slightly protruded from the tip of a stirring vane to the side face side of the suction tool on the stirring vane. CONSTITUTION:A stirring projection 46 infiltrates about 2mm in the surface to be cleaned from a stirring vane 45 and captures and scrapes up fiber dust such as waste thread and hairs. The fiber dust is lifted upward by the rotation of the stirring projection 46 and ordinarily rotated along the outer periphery of an auxiliary agitator cover 47 and removed from the stirring projection 46 and sucked and conveyed to a suction chamber through passages 49 and d0, and it is not entangled in the stirring projection 46 and the stirring vane 45. If it is not removed from the stirring projection 46 by any chance, the flexible stirring vane 45 is prostrated in the rotating direction or the opposite direction by the fastening of the entangled fiber dust, and it is removed from an auxiliary agitator 36 without being hooked on the stirring projection 46. As a result, the stirring vane 45 and the stirring projection 46 are prevented from being damaged, and durability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor suction device for a vacuum cleaner having a main and sub agitator.

BACKGROUND OF THE INVENTION Conventionally, as shown in FIGS. 6 to 6, a floor suction device 1 of this type has a sub-agitator 3 at the end of a main agitator 2. The auxiliary agitator 3 has a auxiliary holder 6 attached to an agitator shaft 6 press-fitted into the holder 4 of the raw agitator 2, and a rotor 7 mounted on the auxiliary holder 6. It is made of a flexible material, and has three stirring blades 8 on its peripheral surface, each having a length of about 6 cm in the thrust direction of the sub-agitator 3, a thickness of about 1 cm, and protruding in the radial direction of the rotor 7. was. When the sub-agitator 3 rotates in conjunction with the rotation of the main agitator 2, the agitation blades 8 scrape up dust in the corners of the room that cannot be captured by the main agitator 2, and suck the dust into the vacuum cleaner body. This improves dust collection in the corners.

Problem to be Solved by the Invention However, when the stirring blade 8 stirs up fine and long fibrous dust such as hair, it enters the main agitator chamber 10 from the passage communicating between the sub-agitator chamber 9 and the main agitator chamber 1o. Before suction, the stirring blade 8 may get caught in the rotation direction. When this phenomenon accumulates, the entangled fibrous dust gets entangled with the root of the stirring blade 8 on the main agitator chamber 1o side due to its tightness, and
The bearing A11. may become string-like inside and damage the stirring blade 8, and furthermore, the bearing A11. This has caused a problem in that it enters the center of the four B12 and wraps around the agitator shaft 6, stopping its rotation.

It is an object of the present invention to solve this problem and to provide a floor suction device having a sub-agitator that is easy to use.

Means for Solving the Problems A first means of the present invention for achieving the above object is a main agitator, and a main agitator, which is located at the end of the main agitator and is formed to protrude in the radial direction from the circumferential surface of the substantially conical rotor. A sub-agitator having flexible stirring blades in the form of a thin plate, a bearing for holding these so that they can rotate freely, and a drive source for the main and sub-agitators are provided, and the stirring blade has a side surface of the suction device. The second means is to form a stirring protrusion that slightly protrudes from the tip of the stirring blade, and the second method is to wrap a portion of the stirring blade closer to the main agitator than the stirring protrusion in the bearing, and at least a part of its outer periphery is formed with the stirring protrusion. The secondary agitator cover is formed by the arm located on the outer peripheral side of the child. Furthermore, a third means is to hold the sub-agitator cover on the suction tool so that the lower surface thereof is substantially the same as the lower surface of the suction tool.

Operation In addition to the first means of the present invention described above, the stirring protrusions and stirring blades scrape up fine and long fibrous dust such as hair, and wind it in the direction of rotation before sucking it into the vacuum cleaner body. Even if the flexible stirring blade is wrapped tightly in fibrous dust, it will fall in the direction of rotation or in the opposite direction, and it will be removed from the sub-agitator without getting caught on the stirring protrusion, and the rotation of the sub-agitator will not be locked. .

In addition, in the second method, when the fibrous dust caught on the stirring bar comes to a part of the sub-agitator cover on the outer circumference side of the stirring bar as it rotates, it is cleaned on the outer circumference of the sub-agitator cover and the radial It spreads in the direction of the stirring protrusion, and is detached from the stirring protrusion so that it does not become entangled.

Furthermore, in the third means, it is possible to ensure that the agitating protrusions penetrate into the surface to be cleaned, such as a carpet, thereby improving the overall performance of capturing fibrous dust.

Example Embodiments thereof will be described below with reference to all accompanying drawings.

The suction tool main body 21 shown in FIGS. 1 to 4 is obtained by connecting upper and lower main body members 23 and 24 via a bumper 22, and has a lower opening in its front interior. A suction chamber 26 with a mouth 26 is formed.

The medium heat of this suction chamber 26 is placed at the top at the rear of the suction tool main body 21.
The communication pipe 2 is held between the lower body members 23 and 24 so as to be able to rise and fall freely.
7, and a connecting pipe 28I rotatably connected to the communication pipe 27.
71I, and to this connecting pipe 28, an extension pipe that is connected to the suction side of the vacuum cleaner via a hose is detachably connected.

Agitator drive motors 2 are installed on the left and right sides of the connecting pipe 28.
9 and a control section 30 for controlling the same are installed inside, and are powered by a power cord 31.

32 is a main agitator installed in parallel with the suction chamber 26, and bearings A33 are installed on both side walls of the suction chamber 26.
．． It is rotatably held by B34, and the shaft 36 is supported by bearing A.
33. A sub-agitator 36 is attached to the B34, which protrudes further to the side. The sub-agitator 36 has an opening A37 formed in the side wall of the suction tool main body 21. Same 83B
is coming. A belt 40 is stretched between a pulley 39 provided on one side of the main agitator 32 and a pulley provided on the rotating shaft of the motor 29, and the main and sub agitators 32 and 36 are forcibly driven.

The main agitator 32 is composed of a substantially cylindrical rotating body 41 and a pair of agitation bands 42 made of a flexible material attached continuously in the longitudinal spiral direction on the outer peripheral surface of the rotating body 41.

On the other hand, the sub-agitator 36 includes a substantially cylindrical base 43 made of a rigid material such as synthetic resin, a substantially conical rotor 44 wrapped around the outer periphery of the base 43, and a radial direction extending from the outer periphery of the rotor 44. It consists of three protruding stirring blades 46. The stirring blade 46 is formed into a thin plate shape with a thickness of approximately 1 width, 8 widths, and approximately 6 widths in the thrust direction of the main agitator 32.
A stirring protrusion 46 is provided on the side end side of the stirring blade 46 so as to protrude about 2B from the tip of the stirring blade 46. and rotor 44° and stirring blade 46. The stirring bar 46 is integrally formed of a flexible material such as rubber. The base 43 is coupled to the shaft 36 and transmits rotation to the rotor 44, and the flexible rotor 4
All of the shape-retention effects in step 4 are performed.

Also bearing A33. The stirring blade 4 on the main agitator 32 side is provided on the side of the sub-agitator 36 of the same B34 from the stirring protrusion 46.
A sub-agitator cover 47 is formed so that its upper part is located on the outer peripheral side of the stirring protrusion 46 and its lower surface is at the same height as the lower surface of the lower body member 24. In the combined state, the lower end of the stirring blade 46 is approximately at the same position as the lower surface of the sub-agitator cover 47.

48 is a tight material such as felt to prevent dust from entering the shaft 36 penetration part, 49.50 is the suction chamber 26 and opening A
37. The opening B38'i is a passage communicating with the lower body member 24.
is removably attached to the upper body member 23, and the suction chamber 26
It is formed with a front lid 61 that can be opened and closed freely.

Next, the first operation in the above configuration will be explained.

When the motor 29 is operated, the belt 40 transmits this rotation, causing the main agitator 32 to rotate upward, forward, downward, backward, and upward, thereby combining the repelling action of the agitation band 42 and the suction force of the vacuum cleaner body. This removes dust from surfaces to be cleaned, such as carpets, and absorbs the dust.

On the other hand, the sub-agitator 36 rotates in synchronization with the main agitator 32, and similarly to the agitation band 42, it releases dust from the surface to be cleaned and sucks it into the suction chamber 10 through the entire passage 49.60. Furthermore, it works effectively for cleaning corners of a room, etc., which are located on the side of the suction device main body 21 and where it is difficult for the main agitator 32 to act.

By the way, the stirring protrusion 46 penetrates into the surface to be cleaned by about 2 m from the stirring blade 46, captures and scrapes up fibrous dust such as lint and hair. This stirring is carried out by lifting the stirring bar 46 upward as it rotates, and usually by rotating along the outer periphery of the sub-agitator cover 47, the stirring bar 46 is lifted upward.
6, and is sucked and transferred into the suction chamber 10 through the passages 49 and 50, so that it does not become entangled with the stirring protrusion 46 or the stirring blade 46.

Even if the above-mentioned stirring bar 46 does not come off, the flexible stirring blade 46 will fall in the rotating direction or the opposite direction due to the entangled fibrous dust, and it will get caught on the stirring bar 46. It can be removed from the sub-agitator 36 without any trouble.

As a result, the stirring blades 46 and the stirring protrusions 46 are not damaged and their durability is improved. Also, bearing A33. Same B3
The penetration of fibrous dust into the shaft 36 penetrating portion of the shaft 36 does not occur, and the rotation of the main and sub-agitators 32 and 36 can be maintained in good condition.

In the above embodiment, a motor is used as a drive source for the main and sub-agitators, but of course other drive means such as an air turbine may be used instead of the motor.

Effects of the Invention As described above, the present invention has a main agitator and a thin plate-like flexible stirring blade located at the end of the main agitator and protruding in the radial direction from the circumferential surface of a substantially conical rotor. A sub-agitator, a bearing for rotatably holding these, and a driving source for the main and sub-agitators are provided, and the stirring blade has a stirring protrusion slightly protruding from the tip of the stirring blade on the side surface of the suction device. By doing so, even if the stirring protrusions and stirring blades scrape up thin and long fibrous dust such as hair and wind it in the direction of rotation before suctioning it into the vacuum cleaner body, the winding of the fibrous dust can be prevented. The flexible stirring blade falls in the direction of rotation or in the opposite direction at the tightness, and is removed from the sub-agitator without being caught on the stirring protrusion, thereby completely preventing rotational lock of the sub-agitator and improving durability.

In addition, by providing the bearing with a sub-agitator cover that covers the main agitator side part of the stirring blade from the stirring bar, and at least a part of the outer periphery is formed closer to the outer periphery of the stirring bar, it is possible to prevent the stirring bar from bowing. When the fibrous dust reaches the part of the sub-agitator cover that is on the outer periphery of the stirring bar due to rotation, it cleans on the outer periphery of the sub-agitator cover and spreads in the radial direction, and it naturally comes off from the stirring bar and becomes tangled. It is possible to prevent it from sticking and improve usability.

Furthermore, by holding the sub-agitator cover on the suction tool so that the bottom surface is almost the same as the bottom surface of the suction tool, it is ensured that the agitation protrusion does not enter the surface to be cleaned, such as the dirt, and captures fibrous dust. This allows performance to be further improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main and sub agitator of the floor suction device according to the embodiment of the present invention, Fig. 2 is a top view with the front cover removed, and Fig. 3 is a side view of the sub agitator. 4 is a bottom view, FIG. 5 is a top view of a conventional floor suction device with the front cover removed, and FIG. 6 is a sectional view of the main and sub agitators. 21...Suction tool body, 32...Main agitator 33, 34...Bearing, 36...
・Sub-agitator-44...Rotor, 45...
... Stirring blade, 46... Stirring protrusion, 47...
...Deputy Agitator - Name of Covering Agent Patent Attorney
Shigetaka Awano 1 person Figure 3 44--1i trans. Season c - 糬 Song Da ÷ 7 - dark book rear J, engineering - tarpaulin Figure 4? ? Diagram

Claims (3)

[Claims] (1) A main agitator, a sub-agitator having a thin plate-like flexible stirring blade located at the end thereof and protruding in the radial direction from the circumferential surface of a substantially conical rotor, and a sub-agitator that is rotatable. The floor suction unit for a vacuum cleaner is provided with a bearing for holding the main and sub-agitators, and a drive source for the main and sub-agitators, and the stirring blade has a stirring protrusion slightly protruding from the tip of the stirring blade on the side of the suction device. Ingredients. (2) The bearing has a sub-agitator cover that covers a portion of the stirring blade closer to the main agitator than the stirring protrusion, and at least a part of the outer circumference is formed on the outer circumference side of the stirring protrusion. Vacuum cleaner floor suction device. (3) The floor suction tool for a vacuum cleaner according to claim 2, wherein the lower surface of the sub-agitator cover is substantially the same as the lower surface of the suction tool.