JP2707005B2 - Vacuum cleaner nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner nozzle.

[0002]

2. Description of the Related Art As nozzles used in vacuum cleaners have been studied for many years, nozzles whose structure has been changed according to the use of each floor, such as a plate floor, a tatami floor or a carpet floor, are now being used. Is configured.

[0003] Among various floors, carpet floors have hairy feet, so that garbage and hair are particularly liable to adhere to them, and it is therefore difficult to remove them. Recently, carpets with long hair are widely used in households, but it is extremely difficult to collect garbage collected at the base of long hair with the nozzle of a normal vacuum cleaner. 54-4155
Special nozzles such as those disclosed in US Pat.

FIG. 14 is a cross-sectional view of the above-described vacuum cleaner developed for cleaning carpets with long hairs, FIG. 15 is an enlarged view of a part of the vacuum cleaner, FIG. 16 is an enlarged view of a protrusion, and FIG. Vacuum cleaner, 2 is its nozzle, 3 is a projection having a hole 3a,
Reference numeral 4 denotes a rotating brush, 5 denotes a dust bag, 6 denotes an air flow, 7 denotes a carpet, and 7a denotes a bristle foot.

In this vacuum cleaner, a large number of projections 3 are arranged on a nozzle 2 at right angles to the moving direction of the nozzle.
When cleaning the carpet 7 having a long hair foot 7a, the tip of the projection 3 is made to reach the base of the hair foot 7a, and the garbage and the like accumulated at the base of the hair foot 7a are sucked through the hole 3a to collect. is there.

[0006]

By the way, the projection 3
When cleaning is performed using a nozzle provided with a nozzle, the long hair 7a of the carpet is
Contact with the nozzle 2 to cause a large resistance to the movement of the nozzle 2,
The movement of the nozzle 2 becomes extremely difficult, and cleaning while pushing and moving the nozzle 2 becomes practically impossible.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional vacuum cleaner, and is intended to smoothly move and clean the vacuum cleaner even on a carpet floor having long bristle feet. The aim is to provide a possible vacuum cleaner nozzle.

[0008]

In order to achieve the above object, a nozzle of a vacuum cleaner according to the present invention is provided with one or a plurality of air suction holes, and is provided at both ends before and after the nozzle in the moving direction. A plurality of boat-shaped protrusions tapering toward the bottom are arranged on the bottom surface.

[0009]

When the cleaning operation is performed using the above vacuum cleaner, the protrusions arranged on the nozzle have tapered portions in the front and rear direction of movement, and the tip of the tapered portion is moved to the carpet when moving the nozzle. And move back and forth, so that the bristle does not hinder the movement of the protrusion, and therefore the long bristle does not resist the movement of the nozzle, and the nozzle moves smoothly and is easily cleaned.

[0010]

FIG. 1 is a sectional view of a nozzle of a vacuum cleaner showing an embodiment of the present invention, and FIGS. 2a and 2b are rear views thereof.
The carpet, 7a is the bristle feet, 10 is the nozzle, 11 is the protrusion attached to the back of the nozzle 10, 11a, 11b
Is a tapered portion thereof, 12 is an air suction hole formed in the projection 11, and 13 is a moving direction of the nozzle 10.

As shown in the figure, a tapered portion 1 is formed on the back surface of the nozzle 10 so that the tapered portion becomes narrower toward both ends in the moving direction of the nozzle 10.
The section in which 1 a is formed forms a boat-shaped projection 11. The taper may be an arc 11a as shown in FIG.
As shown in FIG. Projection 1
The height h of one is higher than the bristle feet 7a of the carpet, and one or a plurality of air suction holes 12 are formed in the protrusion 11.

When the carpet floor is cleaned by attaching the nozzle 10 having the boat-shaped projection 11 to a vacuum cleaner, the boat-shaped projection 11 has tapered portions 11a and 11b before and after the nozzle 10 in the moving direction. The tapered portions 11a and 11b move by scraping the hair 7a.
The nozzle 10 moves smoothly even on the long carpet floor surface a. Further, the bottom surface of the projection 11 reaches the base of the carpet hair 7a and sucks dust and the like accumulated at the base from the air suction hole 12 together with air, so that the long carpet floor of the carpet 7a can be completely cleaned. . As shown in FIG. 1, the protruding portion 11 may be formed by, for example, forming a hole 12 in a single piece of plastic, but as shown in FIG. The protrusion 15 may be formed, and an air suction hole 16 may be formed to communicate with the cavity 15a. In this case, the air suction hole 16
The resistance at the time of air intake is the air intake hole 1 shown in FIG.
Since it is smaller than 2, cleaning becomes easier.

4A and 4B are a side view and a rear view of a projection showing another embodiment. A groove 19 is formed in a portion of the projection 17 which is in contact with the floor of an air suction hole 18 formed in the projection 17. This facilitates the flow of air into the air suction holes 18 during cleaning. Further, as shown in FIG. 5, the shape of the air suction hole may be a long hole 21 instead of a circular hole.

In the above embodiment, for example, in the projection 15 shown in FIG. 3, the air suction hole 16 is formed on the surface of the projection which is in contact with the floor surface. These nozzles are carpet hair 7
Although it is effective to collect the refuse at the root of a, the refuse attached to the upper part of the hairy foot is difficult to collect. FIG. 6 shows not only the root portion of the bristle feet 7a but also protrusions that are effective for collecting dust adhering to the upper and middle portions of the bristle feet 7a, where a is a cross-sectional view and b is a side view. is there. An air suction hole 23 is formed in a portion of the protrusion 22 that is in contact with the floor surface, and an air suction hole 24 is formed in the side surface. As a result, the garbage on the upper part of the hair foot can be collected. Further, as shown in FIG.
Together with the air suction holes 26 provided on the surface facing the floor surface of
An air suction hole 27 is also provided at the corner. As a result, it is possible to collect not only the root of the hair foot but also the dust in the middle part of the hair foot.

Further, as shown in the side sectional view of FIG. 8A and the rear view of FIG. 8B, when the air suction hole 30 is provided on the surface of the nozzle 10 on which the protrusion 28 is mounted, the air suction hole 30 is provided. It is possible to efficiently collect not only the root but also the garbage on the surface and the upper layer of the carpet. Note that the air suction hole is not limited to a small circular hole, but may be a long hole 31 as shown in FIG. 8C.

FIG. 9 is a rear perspective view of a nozzle according to another embodiment, in which a projection 32 and a conventional air suction hole 33 are provided on the nozzle 10. In addition to collecting garbage at the base of hairy feet and garbage on the carpet, large garbage on the floor can also be collected. In the above embodiment, for example, as shown in FIG.
Are arranged in a line in the nozzle 10. However, the arrangement of the projections is not limited to one line, and projections having different specifications may be arranged. FIG. 10 is a rear view of a nozzle in which projections 34 of the same specification are arranged in two rows in the nozzle, and FIG. 11 is a rear view of a nozzle in which a large number of projections 35a to 35n of different specifications are randomly arranged. By disposing them in a diagonal pattern, it is possible to eliminate blind spots during cleaning and to reliably collect dust within the range of the floor nozzle width, and to increase the interval between adjacent projections 34. Part 3
The resistance between the hair 4 and the hair foot is reduced, and the movement of the nozzle 10 becomes easy. In addition, by making the specifications of the projections 35a to 35n different, it is possible to flexibly cope with various carpet floors having widely different specifications such as the length of the hair, the thickness of the flocking or the material. .

Since the tapered portions 11a are formed at both ends of the projection 11, the nozzle can be moved smoothly even on a carpet floor surface with long hairs. May cause damage. The nozzle 10 shown in FIG. 12 has been developed in order to avoid such damage to the carpet. As you can see in the figure,
A tapered portion 36 a is formed on the surface of the protrusion 36 facing the floor, and each of the protrusions 36 is engaged with the nozzle 10 via a spring 37. When moving the nozzle 36 on a carpet floor having a long bristle, if the bristle is entangled and becomes a resistance to the movement of the nozzle, the corresponding protrusion 3
6 moves over the spring 37 by contracting it,
The movement of the nozzle is facilitated, and the damage to the carpet due to the protrusion 36 is greatly reduced.

FIG. 13 shows a nozzle 38 having a projection 38 having a projection 38 in which a portion 38a facing the floor surface is formed in an arc shape and a plurality of air suction holes 39 are formed in the spherical projection 38a. A side sectional view, b is a back view. Since both ends of the projection 38 are tapered, and the surface of the projection 38 facing the floor is formed in an arc shape, the air suction hole 39 of the projection can be easily extended to the base of the long bristle feet on the carpet. In addition to being able to efficiently collect garbage and dust that has invaded and accumulated in this area, the position of the air suction holes 39 is distributed from the base of the hair foot to the upper part of the hair foot, so that It can be cleaned over the entire surface. In addition, since the lower surface of the projection is formed in an arc shape, when moving the nozzle for cleaning, the resistance of the bristle feet is small and the carpet is not damaged.

Further, in the above embodiment, the material of the projection is a hard plastic or the like, but the projection is formed of a soft material such as soft rubber or the like, and the projection is formed when the nozzles such as hairs entangled on the carpet are moved. In the case where there is a resistor, the protrusion may be deformed according to the resistor and move over the resistor. As a result, the hair feet are not damaged by the protrusions, and the carpet damage is reduced. Further, the resistance at the time of moving the nozzle is reduced, so that the operating force when using the vacuum cleaner is reduced, and the usability is improved.

[0020]

According to the present invention, the bottom of the nozzle of the vacuum cleaner is
One or a plurality of air suction holes are formed, and a plurality of boat-shaped projections having a tapered cross section are arranged before and after the nozzle movement direction, and various modifications are made to the boat-shaped projections. The elaboration resulted in the following excellent effects.

(1) Since the tip of the projection reaches the base of the long fur on the carpet floor, it is possible to easily collect dust and dirt accumulated on the base of the fur.

(2) Since both ends of the projection are tapered, the running resistance at the time of nozzle movement is small, and it is possible to effectively clean even a carpet floor surface with long hairs.

(3) By providing an air suction hole on the side surface of the protrusion or the bottom surface of the nozzle in addition to the bottom surface of the protrusion, dust adhering not only to the root of the long hair foot but also to the middle part or upper part of the hair foot Can be collected, cleaning efficiency is increased.

(4) By providing an air suction hole substantially similar to the conventional air suction hole on the surface of the nozzle opposed to the floor surface, in addition to the projection having the air suction hole on the bottom surface, Without attaching a power mechanism, it is possible to collect debris that accumulates at the base of the carpet's hair feet, as well as debris on the carpet surface or surface layer.

(5) By arranging the projections in two rows, the number of air suction holes within the width of the nozzle can be increased to increase the cleaning density by one operation, and the adjacent projections can be provided. The distance between the parts can be increased, and the resistance between the bristle feet and the protrusions can be reduced.

(6) By mounting a large number of projections having different specifications at random on the surface opposite to the floor surface of the nozzle, it is possible to prevent the carpets having widely different properties such as the length and material of the bristle feet. Can respond flexibly.

(7) By forming the surface of the projection facing the floor surface in an arc shape or forming a tapered portion on the surface, the resistance at the time of nozzle movement is reduced, and the carpet is damaged by cleaning. Can be reduced.

(8) By mounting the projection on the nozzle via a spring, or by selecting a flexible material such as soft rubber for the material of the projection, the resistance during the movement of the nozzle can be reduced and the carpet can be reduced. Damage can be prevented.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a nozzle of a vacuum cleaner showing one embodiment of the present invention.

FIG. 2 is a back view of the nozzle.

FIG. 3 is a side cross-sectional view of a nozzle having a projection formed so that the inside is hollow.

4A and 4B are a side view and a plan view of a protrusion having a groove formed at a distal end of an air suction hole.

FIG. 5 is a plan view of a protruding portion provided with a long hole-shaped air suction hole having a groove formed at a distal end portion.

6A and 6B are a cross-sectional view and a front view of a protrusion having an air suction hole on the side surface as well as the bottom surface.

FIG. 7 is a cross-sectional view and a front view of a protrusion having an air suction hole at a corner as well as at the bottom.

8A and 8B are a cross-sectional view and a rear view of a nozzle having an air suction hole on a surface facing a floor surface of the nozzle together with a protrusion.

FIG. 9 is a rear perspective view of a nozzle provided with a protrusion on a surface facing a floor surface of the nozzle and having an air suction hole.

FIG. 10 is a rear view of a nozzle in which protrusions are arranged in two rows.

FIG. 11 is a rear view of a nozzle in which protrusions having different specifications are randomly arranged.

FIGS. 12A and 12B are a cross-sectional view and a rear view of a nozzle on which a projection is mounted via a spring.

13A and 13B are a cross-sectional view and a rear view of a projection in which a surface that contacts a floor surface is formed in a spherical shape.

FIG. 14 is a perspective view of a conventional vacuum cleaner for cleaning long-haired carpets.

FIG. 15 is a partially enlarged view of the vacuum cleaner.

FIG. 16 is an enlarged view of a protrusion of the vacuum cleaner.

[Explanation of Signs] 10 Nozzles 11, 15, 17, 20, 22, 25, 28, 32, 3
4, 35a to 35n, 36, 38 Boat-shaped projections 11a, 11b Tapered portions 12, 16, 18, 21, 23, 24, 26, 27, 2,
9, 30, 31, 3339 Air suction hole 19 Groove 36a Tapered portion 38a Arc-shaped portion

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaki Komatsu 2-14-40 Ofuna, Kamakura City Mitsubishi Electric Corporation Living System Laboratory (72) Inventor Shinsuke Ise 2-14-40 Ofuna, Kamakura City Mitsubishi Electric (72) Inventor Yutaka Takahashi 1728 Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama 1 Mitsubishi Electric Home Equipment Co., Ltd. (56) References JP-A-52-33363 (JP, A) JP-A-56-1134 (JP, A) JP-A-61-37126 (JP, A) JP-A-1-151426 (JP, A) JP-A-3-75031 (JP, A) , U) West German Patent Application Publication 3602926 (DE, A)

Claims (9)

(57) [Claims] 1. An air intake system comprising one or more air suction holes,
A nozzle for a vacuum cleaner, wherein a plurality of protrusions having a boat-shaped cross section which are tapered toward both ends in the front and rear directions of movement of the nozzle are arranged on a surface facing the floor surface. . 2. The nozzle according to claim 1, wherein the boat-shaped projection is made of a synthetic resin or a steel plate. 3. The vacuum cleaner according to claim 1, wherein a groove for allowing air to flow is formed in a portion of the protrusion having a boat-shaped cross section in contact with the floor surface of the air inflow hole. nozzle. 4. The nozzle for an electric vacuum cleaner according to claim 1, wherein an air inflow hole is provided on a side surface of the protrusion having a boat-shaped cross section and a surface facing the floor surface. 5. The vacuum cleaner according to claim 1, wherein a circular or slit-shaped air inflow hole is formed in a surface of the nozzle having the boat-shaped projections arranged opposite to a floor surface. Nozzle. 6. The nozzle for an electric vacuum cleaner according to claim 1, wherein the projection having a boat-shaped cross section is attached to the nozzle via a spring. 7. The nozzle according to claim 1, wherein a portion of the protrusion having a boat-shaped cross section in contact with a floor surface is formed in an arc shape. 8. The nozzle for a vacuum cleaner according to claim 1, wherein the projecting portions having a boat-shaped cross section are arranged in a zigzag pattern on a surface facing a floor surface of the nozzle. 9. The nozzle according to claim 1, wherein a plurality of boat-shaped projections having different specifications are randomly arranged on a surface facing the floor surface of the nozzle.