JPH0316546A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a carpet on a floor from being napped or scratched by forming numerous ridges made of a flexible material on the entire surface of the ridged zone of an agitator and uniting a hard thin plate with the surface provided with the ridges. CONSTITUTION:An agitator 26 and its driving source 15 are provided in the main body 6 of this floor nozzle. The agitator 26 is formed of a continuous flexible material extended over the entire peripheral surface of a rotor 37 in the length direction and is provided with a ridged zone 38 having numerous ridges 41 on at least one surface. The main body section 40 of the zone 38 is formed of a soft material and a hard thin plate 42 is united to the surface of the zone 38 with the ridges 41. As a result, a carpet can be prevented from being napped or scratched and, at the same time, the frictional resistance between the carpet pile and ridge zone is lowered. Therefore, the number of rotation of the agitator can be secured stably and the dust collecting performance of this nozzle can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner with an agitator.

BACKGROUND OF THE INVENTION In a conventional seed bed nozzle of this type, an agitator equipped with a protrusion band is known, for example, as described in Japanese Patent Application Laid-Open No. 61-33834. Agitators that rotate at high speed and are applied to floor nozzles for vacuum cleaners have also been commercialized. Its structure will be explained based on Figs. 6 to e. 1 is an agitator, 2 is a protrusion strip provided in a spiral shape on the agitator 1, and the protrusion strip 2 is in contact with the floor surface. It has a large number of conical protrusions 3 with sharply pointed tips on the contacting surfaces. The protruding strip 2 has its base 4 inserted into a groove 6 formed in the agitator 1.

Problems to be Solved by the Invention However, in the above-mentioned structure, since the conical protrusion 3 with a sharply pointed tip is formed on the protrusion band 2, it is difficult to clean the carpet surface, especially when cleaning the carpet surface. In a carpet formed in a loop shape, the tip of the protrusion 3 is hooked on the loop-shaped pile, and the hooked protrusion 3 rotates further in that state, so that a part of the loop-shaped pile It will be cut from the top. In addition, the unwanted hair in the pile, called loose hair, is similarly stirred up, leaving the surface of the carpet fluffy. Particularly in products applied to floor nozzles for vacuum cleaners, the rotational force of the agitator 1 is strong and the product rotates at high speed, which causes instant fuzzing and damage to the carpet.

Because the tips of the protrusions 3 are excessively sharp and because they are made of rubber material, frictional resistance on the carpet increases and the rotational speed of the agitator 1 itself decreases significantly, making it difficult to scrape off dust. There were also durability problems such as a decrease in lifting suction performance and rapid wear of the end face of the tip of the protrusion band 2 and the wear of the protrusion 3. Furthermore, when inserting and fitting the protruding strip 2 into the agitator 1, the base 4 is formed of a rubber material and has a large sliding resistance with the groove 6, making it difficult to insert the protruding strip 2 into the agitator 1. Since the assembly was carried out by pulling, the protrusion band 2 was deformed and elongated, and it took a long time to assemble.

The present invention solves these conventional problems and stabilizes the rotational speed of the agitator by preventing the carpet pile from fuzzing and being damaged, and by reducing the frictional resistance between the ridge strip and the carpet pile. The purpose of this is to improve the dust collection performance, maintain the agitator's function well, extend the life of the agitator, and improve its ease of assembly.

Means for Solving the Problems A first means of the present invention for achieving the above object is to provide an agitator and its driving source within the floor nozzle main body, and the agitator is arranged in the longitudinal direction of the circumferential surface of the rotor. e. from flexible materials. ! ll, is constructed by providing a protrusion strip having a large number of protrusions on at least one surface, the main body of the protrusion strip is made of a soft material, and a hard thin plate is provided on the surface of the surface having the large number of protrusions. The second means is that the tip of the protrusion formed by integrating a hard thin plate on the surface has an R dimension that is equal to or larger than the thickness of the thin plate.

The third means is constructed by bonding a hard thin plate to the entire front end of a face button having a large number of protrusions and its protruding stripes.

Furthermore, as a fourth means, a hard thin plate is integrated with the base of the protrusion band which is inserted and fitted into the groove formed in the longitudinal direction of the circumferential surface of the rotor, and covers more than half of the fitting area.

Effect: In the first means of the present invention, the protruding strip applied to the agitator has a large number of protrusions on at least one surface (the surface on the rotation direction side), and is made of a flexible material and has protrusions. Since the surface of the surface is integrated with a hard thin plate with extremely low frictional resistance, when it comes into contact with the surface to be cleaned, due to the nature of the flexible material, the protruding band bends and adapts well to the surface.
The squeezing action and the action of instantaneously restoring the ridges due to the properties of the hard thin plate efficiently scrape up dust, keep the contact area between the surface to be cleaned and the ridges small, and reduce the friction on the carpet surface. This prevents fuzzing and damage.

In the second method, the contact resistance with the surface to be cleaned is lowered by forming the tip of the protrusion with a hard and slippery thin plate, and the tip of the protrusion has an R dimension larger than the thickness of the thin plate. The spherical shape makes it easy to slip on the loop carpet and prevents it from getting caught or cut.

In the method shown in Fig. 3, the surface of the part of the protruding band that is most likely to wear out, that is, the tip surface of the protruding band, is made of a hard thin plate with good sliding properties, so that it improves the sliding property when it comes into contact with the carpet and reduces wear. Durability can be improved by generating an effect that reduces the

In the fourth method, most of the outer circumferential surface of the base of the protrusion band is formed with a hard thin plate with good sliding properties, so that the frictional resistance with the groove is extremely reduced during assembly and insertion, making it easy and smooth. It is possible to assemble and insert the agitator 9, which reduces the number of man-hours and prevents deformation of the protrusions, resulting in a high-quality agitator.

Example Examples thereof will be described below with reference to the accompanying drawings.

In Figures 1 to 4, the nozzle body 6 is obtained by joining upper and lower body members 8 and 9 via a bumper 7, and the front interior thereof has a lower opening as a suction port 1o. A suction chamber 11 is formed.

The center of this suction chamber 11 extends to the rear of the nozzle body 6 and is connected to a suction passage 12 whose upper and lower walls are arcuate. Also, the nozzle body 6 located at the rear of the suction chamber 11
Inside, there are rooms 13, i4 partitioned left and right by the suction passage 12, some of the rooms 13 are equipped with a small motor 16 for driving the agitator, and the other room 14 is equipped with its control unit. 16 are installed inside each. 17.18
are vents for flowing cooling air into each room 13 and 14, and furnace filter materials 19 and 20 are used to prevent dust from entering.
is covered.

Reference numeral 21 denotes a substantially semi-cylindrical suction joint which is connected to the suction passage 12 so as to be able to rise and fall freely, and a connecting pipe 24 is rotatably connected to a cylindrical connecting port 22 that protrudes from a part of the peripheral wall of the joint via a ring 23. An extension pipe connected to the suction side of the vacuum cleaner via a hose is detachably connected to the connecting pipe 24. 26 indicates a power cord for the motor 16.

26 is a main agitator provided in parallel to the suction chamber 11, and 27 is a bearing of the main agitator 26 provided on both side walls of the suction chamber 11. Main agitator 26 above
The shaft 28 protrudes further to the side than the bearing 27, and an auxiliary agitator 29 is attached thereto. This sub-agitator 29 faces an opening 30 formed in the side wall of the nozzle main body 6.

Between the pulley 31 provided on one side of the main agitator 26 and the pulley 32 provided on the shaft of the motor 16, there is a vent 3.
3 is posted. That is, the main and sub agitators 26 and 29 are forcibly driven by the motor 15.

34 is a fixed plan attached parallel to the rear of the suction port 10;
Reference numerals 35 and 36 denote wheels provided at the front and rear of the nozzle body 6 in order to position the suction port 10 at a constant distance from the surface to be cleaned.

By the way, the main agitator 26 has a protrusion band 38 continuous in the longitudinal helical direction on the outer peripheral surface of the substantially cylindrical rotor 37 in the groove 3.
I installed it on my 9th and used it as a precept.

The main body part 40 of the protrusion band 38 is made of a flexible material such as rubber, and at least one side thereof (
A large number of protrusions 41 are formed on the side surface in the rotation direction.

The surface on which many of these protrusions 41 are provided is hard and has an extremely low frictional resistance value. It is integrated by bonding thin plates 42 of easy-to-use materials such as nylon and Teflon.

The tip of the protrusion 41 has an R dimension set to be as large as the thickness T dimension of the thin plate 42 (R>T), and is shaped into a spherical shape. In this embodiment, the thickness of the thin plate 42 is T=0.1
5fl, R=0.2 are set the same.

The thin plate 42 mentioned above is also bonded to the entire surface of the tip 43 of the protruding strip 38, and the portion that makes the most contact with the surface to be cleaned is formed of a material with good slipperiness to reduce wear. It is something.

Furthermore, in order to reduce the insertion resistance, the root portion of the protrusion band 38, that is, the base portion 44 that is inserted and fitted into the groove 39 formed in the rotor 37, has a slippery material over more than half of the fitting area. Good thin plates 42 are bonded together.

Next, the function and operation will be explained.

Now, when the main agitator 37 is rotating clockwise as shown in Fig. 4, the protrusion band 38 is displaced counterclockwise when it comes into contact with the surface to be cleaned, and takes a shape along the surface to be cleaned. .

That is, the main body part 4o is a flexible material, and due to its properties, the protruding stripes 38 generate bends 9, and then move relative to the surface to be cleaned, and at this time, the dust is absorbed by the numerous protrusions 41. It is scattered and released from the surface to be cleaned. Furthermore, due to the properties of the hard thin plate 42 integrated into the ridge band 38, the nozzle body is instantly restored due to the properties of the hard thin plate 42, and the restoring action in the right angle direction due to the centrifugal force is also repelled by the repelling action and the suction force of the vacuum cleaner. e.

The rich, ridged band 38 blocks the flow of air from the front when in contact with the surface to be cleaned, and prevents the suction force of the vacuum cleaner from acting concentratedly and effectively on the surface to be cleaned. encourage

Since the twisted protruding band 38 is a continuous band, it is possible to prevent string-like dust such as lint from becoming entangled.

Here, due to the bending action and instantaneous restoring force action of the protrusion band 38, in the case of a surface to be cleaned, for example, a loop carpet, the contact time and contact area with the protrusion band 38 can be reduced, and The low frictional force of the κ thin plate 42 also prevents fuzzing and scratches on the carpet surface.

On the other hand, since the surface of the protrusion 41 is integrated with a thin plate 42 with good sliding properties, and the tip is smoothly formed with an R dimension larger than the thickness of the thin plate 42, it can easily slip on the pile part of the Norede carpet, and can also be hooked. This prevents the carpet from being cut and makes it last longer. 1
The part of the protruding band 38 that is most likely to wear out, that is, the tip 4
3 is formed with a thin plate 42 having good sliding properties over its entire surface, so that the frictional resistance when it comes into contact with the carpet is small and the durability is improved.

Furthermore, even when inserting and assembling the protruding strip 38 into the groove 39 of the rotor 37, since most of the outer peripheral surface of the base 44 of the protruding strip 38 is formed with a thin plate 42 with good sliding properties, the groove can be easily inserted into the groove 39 of the rotor 37. The insertion resistance with 39 is small, making insertion work extremely easy and smooth, reducing man-hours and improving the
8 can be prevented from deforming, and a high quality agitator 26 can be obtained.

In the above embodiment, a motor is used as the agitator drive source, 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 an agitator. The main body of the protruding strip is made of a soft material, and a hard thin plate is attached to the surface of the surface having many protrusions, thereby reducing the amount of water from the surface to be cleaned. Dust is released precisely and dust is efficiently sucked into the nozzle body. Moreover, in the case of a loop carpet, the buttons can prevent the surface of the carpet from fuzzing and being damaged.

1. The tips of the protrusions are spherical and smooth with an R dimension that is larger than the thickness of the thin plate, so they slide easily against the carpet pile and prevent them from getting caught or being cut, extending the life of the carpet. In addition, since the part of the ridge that is most prone to wear, that is, the entire tip, is made of a thin plate with good sliding properties, the frictional resistance when it comes into contact with the carpet is reduced, improving the durability of the ridge. be.

Most of the outer circumferential surface of the base of the housing and protrusions is made of a thin plate with good sliding properties, which reduces the sliding resistance when inserting into the rotor groove, making it possible to insert the rotor extremely smoothly. , thereby promoting reduction in manufacturing costs. Furthermore, it can also contribute to preventing the deformation of the ridges, resulting in a high-quality agitator.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a button protrusion band according to an embodiment of the present invention;
The figure is a top view of the floor nozzle with the upper main body member removed, Figure 3 is a sectional view, Figure 4 is a sectional view of the agitator, Figure 6 is a front view of the main parts of the agitator in the conventional example, and Figure 8. is the same sectional view. 6... Nozzle body, 15... Drive source,
26...Main agitator, 37...Rotor, 38...Protrusion band, 40...Main part, 41...Protrusion, 42...Thin plate, 4
3... tip, 44... base.

Claims (4)

[Claims] (1) An agitator and its driving source are installed inside the floor nozzle body, and the agitator has a projection band made of a flexible material and having a large number of projections on at least one surface in the longitudinal direction of the circumferential surface of the rotor. A floor nozzle for a vacuum cleaner, wherein the protrusion strip has a main body formed of a soft material, and a hard thin plate is integrated on the surface of the surface having a large number of protrusions. (2) Claim 1, wherein the tip of the protrusion whose surface is integrally formed with a hard thin plate has an R dimension that is greater than the thickness of the thin plate.
Floor nozzle for the vacuum cleaner described. (3) Claim 1 or 2, wherein a hard thin plate is integrally formed on the surface having a large number of protrusions and the entire tip of the protrusion band.
Floor nozzle for the vacuum cleaner described. (4) The vacuum cleaner according to claim 1, wherein a hard thin plate is integrally formed at the base of the protruding strip that is inserted into the groove formed in the longitudinal direction of the circumferential surface of the rotor and covers more than half of the fitting area. floor nozzle.