JPH0435632A - Vacuum cleaner suction body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a suction port body for a vacuum cleaner having a rotating blade rotated by a drive source.

(Prior art) Conventionally, a suction mouth body for a vacuum cleaner was developed in which the end of a rotating brush was provided with bristles that spread outward in the axial direction so that the rotating brush could sweep up the corners of a room. has been done. As shown in FIG. 5, in this type of suction port body, a shaft body 4 is provided on the outer periphery of a brush stand I, located at the end of a rotating brush 3 provided with main bristles 2. The rotating brush 3 is rotatably supported via a bearing 5 into which the shaft body 4 is inserted, and the bearing 5 is supported by a bearing support portion 7 formed in the suction port main body 6. At the end of the brush stand 1, end bristles 8 are provided which are inclined so as to spread toward the end surface of the brush stand 1.

By rotating the rotating brush 3 by a drive source (not shown), the main brush bristles 2. The end brush bristles 8 scrape up dust such as lint and hair in the bristles of a surface to be cleaned 9 such as a carpet, and the dust is sucked into the vacuum cleaner body. At this time, the lower part of the bearing 5 is also scraped up by the end brush bristles 8, so that even the corners of the room can be cleaned.

(Problem to be Solved by the Invention) However, in the suction port body having the above-mentioned configuration, as the rotary brush rotates, the tips of the slanted end bristles scrape up the carpet under the bearing. The tip of the brush bristles is drawn (the bearing located inside the arc trajectory is tangled with dust A such as lint, hair, etc.).As you continue cleaning, the amount of tangled dust A increases and the rotating brush rotates. This causes a problem in that the rotation of the rotating brush is hindered by the entangled dust A. Also, the resin bearing and brush body There was also the problem that the frictional heat generated by these contacts caused them to melt.

An object of the present invention is to solve the above-mentioned problems and provide a suction port body for a vacuum cleaner that prevents dust such as lint and hair entangled in the bearing from coming into contact with the end surface of the brush stand of the rotating brush. It is something to do.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the above problems, the suction port body of the vacuum cleaner of the present invention includes a main body in which a suction port is formed on the lower surface, and a rotating body inside the main body facing the suction port. A rod-shaped brush stand that is freely pivoted, a main brush bristle provided on the outer periphery of this brush stand, and a main brush bristle provided on the outer periphery of the end of the brush stand that is tilted so as to spread toward the end surface side of the brush stand, and a tip. a rotating brush having end bristles that protrude from the end surface of the brush stand; a drive source for rotationally driving the rotating brush; and a shaft provided in the main body and provided at both ends of the brush stand that is rotatable. a suction port body for a vacuum cleaner having a bearing supported on the bearing, a blocking body protruding to the outer periphery of the bearing, the blocking body being located between the end face of the brush stand and the tip of the end brush bristles; This is what I did.

(Function) According to the above configuration, even if dust such as lint and hair scraped up from the carpet by the tips of the end brush bristles when the rotary brush is rotated gets entangled in the bearing, the end brush bristles The blocking body is located between the tip and the end face of the brush holder and prevents dust entangled in the bearing from entering the brush holder, which prevents dust such as lint and hair from coming into contact with the brush holder. .

(Example) An example of the present invention will be described based on FIGS. 1 and 2. Reference numeral 11 denotes a suction port body, which is composed of an upper case 12 and a lower case 13, and a suction port 14 is formed on the lower surface of the lower case 13. At the rear of the main body 11 is a connecting pipe 15 that can be moved up and down.
The connecting tube 15 is provided with a rotary tube 16 that is rotatable in the circumferential direction. Reference numerals 17 and 17 denote wheels for movement that are provided at the rear of the lower surface of the main body 11 with the connecting pipe 15 sandwiched therebetween.

A rotating brush chamber 18 that can be opened and closed by a lid (not shown) is formed in the front part of the main body 11. Inside this rotating brush chamber 18, a rod-shaped (cylindrical in this embodiment) rotating brush chamber 18 faces the suction port I4. A brush 19 is provided. This rotating brush 19
A shaft body 32 as a shaft is provided at both ends of the shaft body 3.
2 is pivotally supported by bearings 20°21. These bearings 20 and 21 are connected to a bearing support portion 2 formed in the lower case 13.
By being supported at an angle of 2° 22, the rotating brush 19 is rotatably supported by the main body II.

A gear-shaped pulley 23 is formed at one axially outer end of the rotating brush 9 (on the right side in FIG. 1). Reference numeral 24 denotes a motor as a driving source, and a gear-shaped pulley 25 is formed at the tip of its output shaft.Each gear-shaped pulley 23 and 25 is connected by a belt 26, and the rotational force of the motor 24 is transmitted by this belt 26. is transmitted to the rotating brush 19.

The rotating brush 19 and the bearing 20 will be explained in detail. The rotating brush 19 includes a main brush stand 28, a main brush bristle 29 provided on the main brush stand 28, and an end brush provided at the other axially outer end (left side in FIG. 1) of the main brush stand 28. It consists of a stand 30 and end brush bristles 31 provided on the outer periphery of the end brush stand 30 and inclined so as to spread toward the end surface 40 side of the end brush stand 30, that is, toward the outside in the axial direction. . The brush stand is the main brush stand 28
and an end brush stand 30.

The main brush stand 28 and the end brush stand 30 may be integrated. The bearing 20, the end brush stand 30, and the main brush stand 28 are connected by a shaft body 32 as a shaft. End brush bristles 3
1 is positioned below the bearing 20 as shown in FIG. 2 when the rotating brush 9 rotates. That is, as the rotating brush 9 rotates, the tip of the end brush bristles 31 is drawn (the bearing 20 is disposed inside the arcuate locus).

Reference numeral 33 denotes an end brush stand 30 that is formed integrally with the bearing 20 and protrudes in the radial direction of the rotating brush to remove dust entangled in the bearing 20.
This flange 33 is a disc-shaped flange as a blocking body that prevents contact with the end brush 31 in the axial direction.
and the end face 40 of the end brush stand 30, in other words, the outermost part in the axial direction. The diameter of the flange 33 is larger than the diameter of the end brush stand 30.

The operation of the suction port body of the vacuum cleaner configured as described above will be explained. To clean, an extension pipe, hose, etc. (not shown) connected to the vacuum cleaner body is connected to the rotary pipe 16. When the surface to be cleaned is a tatami or a floor, cleaning is performed without operating the motor 24 and rotating the rotary brush 19.

When the surface to be cleaned is a carpet, the motor 24 is operated to rotate the rotary brush 19, and the rotary brush 19 scrapes up the hair of the carpet B while cleaning. At this time, the tips of the end brush bristles 31 scrape up the carpet surface below the bearing 20, making it possible to clean corners of the room such as walls. At this time, dust such as lint 9 and hairs, which are scraped up by the rotation of the tip of the end brush bristles 31, becomes entangled with the portion of the bearing 20 corresponding to the tip of the end brush bristles 31. According to this embodiment, even if the amount of dust such as lint and hair entangled in the bearing 20 increases as cleaning continues, the flange 33
Since the end brush stand 30 is separated from entangled lint 9 and dust such as hair, the two do not come into contact even when the rotating brush I9 is in a rotating state. Moreover, since the diameter of the flange 33 is larger than the diameter of the end brush stand 30, the thread waste 9 can be removed more reliably.
Dust such as hair can be prevented from coming into contact with the end brush stand 30. Therefore, the rotation of the rotating brush 190 is not hindered, and furthermore, it is possible to prevent the generation of frictional heat due to contact between the end brush stand 30 and dust such as lint, hair, etc. entangled with the end brush stand 30, thereby preventing thermal deformation of the bearing and the brush stand. Not at all.

Although the end brush bristles 31 are provided at one end of the brush stand, they may be provided at both ends of the brush stand. In this case, if the flanges are also provided at both ends, the same effect as described above can be obtained.

In this embodiment, the blocking body is a flange provided over the entire circumference, which is the most preferred embodiment, but it is not limited to a flange. It may be a protrusion or the like that protrudes partially.

That is, the blocking body protrudes from the bearing 20 to the outer periphery and
Any material may be used as long as it acts to prevent dust entangled in the brush from coming into contact with the end brush stand 30.

Next, another embodiment of the present invention will be described based on FIG.

Portions similar to those in the above embodiment are designated by the same reference numerals, and explanation thereof will be omitted. Reference numeral 34 denotes an inclined portion forming a part of the flange 33, and the outer diameter portion thereof is inclined so as to approach the end brush stand 30 side. According to this configuration, even if dust adheres to the part near the root of the end brush bristles 31 and this dust gets entangled with the bearing, the inclined part 34 guides the dust to the bearing support part 22 side and the dust is removed from the flange 33. Push outward in the axial direction, bearing 2
It is possible to prevent dust entangled with the brush 0 from coming into contact with the end brush stand 30.

FIG. 4 shows an embodiment in which the direction of inclination of the inclined portion is reversed from that in FIG. 3. In this case, the outer diameter portion of the inclined portion 35 is inclined so as to approach the bearing support portion 22 side.

When cleaning, the dust scraped up by the tip of the end brush bristles 31 is removed from the end brush bristles 31 in the bearing 20.
It is entangled in a position corresponding to the tip of the As the cleaning continues, the amount of entangled dust increases, contacts the flange 33, and advances to the outer diameter of the flange 33.
Since the inclined portion 35 is formed to suppress the advancing dust, even if the amount of entangled dust increases, contact with the end brush stand 30 can be prevented. Note that the entire flange 33 may be formed into an inclined portion like the inclined portions 34 and 35.

〔Effect of the invention〕

As explained above, according to the suction port body of the vacuum cleaner of the present invention, it is possible to prevent dust such as lint and hair entangled in the bearing from coming into contact with the end surface of the brush stand of the rotating rotary brush. , does not interfere with the rotation of the rotating brush. Further, since no frictional heat is generated due to their contact, there is no adverse effect on the bearing, brush stand, etc. due to this frictional heat.

[Brief explanation of the drawing]

1 to 4 are views showing the suction port body of the vacuum cleaner of the present invention, FIG. 1 is a partial sectional view with the lid removed, FIG. 2 is a sectional view of the main part, and FIG. The figure is a sectional view of main parts showing another embodiment,
FIG. 4 is a sectional view of a main part showing still another embodiment, and FIG. 5 is a partial sectional view showing a conventional example. 11-・-Main body 14-゛Suction port 19-・
-・One rotation brush 20.21-''・Bearing 24-・One drive source 28...-Brush stand (main brush stand) 29...--Raw brush bristle 30°'...-Brush stand (end brush stand) 31-...
End brush bristles 33... - blocking body (flange) 40... one end surface

Claims (1)

[Scope of Claims] A main body having a suction port formed on a lower surface thereof, and a main body rotatably supported within the main body facing the suction port,
A rod-shaped brush stand, main brush bristles provided on the outer periphery of the brush stand, and main brush bristles provided on the outer periphery of the end of the brush stand, which are inclined so as to spread toward the end face side of the brush stand, and the tip portion is attached to the end face of the brush stand. a rotating brush having more protruding end bristles; a drive source for rotationally driving the rotating brush; a bearing provided in the main body and rotatably supporting shafts provided at both ends of the brush stand; In the suction port body for a vacuum cleaner, the bearing is provided with a blocking body projecting to the outer periphery, and the blocking body is located between the end face of the brush stand and the tip of the end brush bristle. The suction port of a vacuum cleaner.