RU2370199C1 - Vacuum cleaner suction brush - Google Patents

Abstract

FIELD: personal demand items. ^ SUBSTANCE: suction brush is designed for vacuum cleaner and consists of the front locking element and the rear locking element, which are located in front and rear parts of its lower surface correspondingly and allow to tightly isolate the hole in a circumferential direction, which is made in lower surface of the brush housing, owing to which high suction force is created between the surface being cleaned and the suction hole during the cleaning process. The front locking element is installed with the possibility of being turned on the brush housing so that one of its ends is connected to the brush housing. The first locking element consists of the first locking lever and the second locking lever, which are meant for maintaining high suction force between suction hole and the surface being cleaned at their being brought alternately into close contact with the surface being cleaned when the suction brush is moved forward or backward. The first locking lever has air suction holes intended for preventing the air flow from entering the suction hole when the first locking lever is in close contact with the surface being cleaned when the brush housing is moved forward. ^ EFFECT: preventing decrease of suction force created on the periphery of suction hole, providing usability and operability of suction brush when it is moved forward and the possibility of controlling suction force in compliance with the characteristic of the surface being cleaned. ^ 6 cl, 6 dwg

Description

Pursuant to §119 (a) of Section 35 of the US Code, the priority of this application is claimed on Korean Patent Application No. 10-2007-0051370, filed May 28, 2007 with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference .

BACKGROUND OF THE INVENTION

Technical field

This invention relates to a suction brush for a vacuum cleaner. More specifically, the present invention relates to a suction brush for a vacuum cleaner for suctioning dust in contact with a surface to be cleaned.

Description of the prior art

Typically, the flow connection between the suction brush of the vacuum cleaner and the main body of the vacuum cleaner is through a flexible hose and extension tube. The vacuum cleaner draws dust from the surface to be cleaned due to the applied suction force generated by the suction motor located in the main body of the vacuum cleaner, so that a predetermined vacuum pressure is maintained between the surface to be cleaned and the suction brush.

As set forth in Japanese Patent Laid-open No. 7-163495 and Korean Patent No. 662642, front and rear blocking elements made of soft material and designed to prevent air leakage are installed in front and rear parts of the lower surface of the suction brush having an opening through which suction and which is the center of the suction brush, so that the vacuum pressure arising between the surface to be cleaned and the surface of the suction brush can be maintained at a maximum level, which in turn increases the suction force, allowing to improve the efficiency of absorption during cleaning of relatively smooth floors coated with wood, linoleum or other materials.

When such a suction brush with front and rear blocking elements located respectively in the front and rear parts of the lower surface of the suction brush is moved forward or backward along the surface to be cleaned, the blocking elements hermetically isolate the suction hole from the outside at its periphery, thereby creating a predetermined tight space between the surface being cleaned and the suction brush, which in turn provides maximum suction force in this space.

In addition, when the traditional suction brush is moved forward, the front blocking element opens a large part of the front of the suction port, and in the case where the traditional suction brush is moved back, the front blocking element seals the front of the suction port. Thus, the control of the suction brush is facilitated.

However, most of the front of the suction hole is open when the suction brush is moved forward and, therefore, the suction force exerted on the periphery of the suction hole is much less than when the suction brush is moved back, whereby dust absorption efficiency may decrease.

In addition, since the front and rear blocking elements of the traditional suction brush are in contact with the surface to be cleaned when the surface to be cleaned is carpeted, there is a possibility of damage to the front and rear blocking elements, as well as the possibility of being attracted to the bottom surface of the suction brush due to high vacuum pressure created between the carpet and the suction hole of the front and rear blocking elements, as a result of which the control of the suction brush is much more complicated.

SUMMARY OF THE INVENTION

One aspect of the present invention is to maximally eliminate the above problems and / or disadvantages and at the same time provide the maximum benefits described below. Thus, one aspect of the present invention is to provide such a suction brush for a vacuum cleaner, the design of which would not allow the weakening of the suction force created on the periphery of the suction hole, and at the same time would provide convenience and ease of use when the suction brush is moved forward .

Another aspect of the present invention is to provide such a suction brush for a vacuum cleaner in which the suction force is adjusted in accordance with the characteristic of the surface being cleaned, so that the suction brush on the surface being cleaned is at the same time convenient.

In accordance with one aspect of an illustrative embodiment of the present invention, there is provided a suction brush for a vacuum cleaner comprising a front blocking element and a rear blocking element located respectively in front and rear parts of a lower surface of the body of the suction brush, providing insulation around the periphery of the suction hole made on the lower surface of the brush body, so that during the cleaning process creates a large suction force between the cleaned and the front blocking element is mounted rotatably on the brush body in such a way that one end is connected to the brush body and contains a first blocking lever and a second blocking lever to maintain a large suction force between the suction hole and the surface to be cleaned and which are alternately brought into close contact with the surface to be cleaned when the suction brush moves forward or backward, in addition, the first locking lever There are openings for air intake designed to prevent the passage of air flow through the suction hole when the first locking lever is in close contact with the surface being cleaned if the brush body moves forward.

The front and rear blocking elements can be raised or lowered in relation to the brush body by pressing against the surface being cleaned or lifting from the surface being cleaned. Front and rear blocking elements can be used selectively depending on the type or condition of the surface being cleaned.

The brush housing can be mounted on the suction brush with the possibility of raising or lowering and may contain a movable panel on which the front and rear locking elements are mounted. In order to raise or lower the movable panel, the design of the suction brush may also comprise a button unit located externally on the brush body. In addition, the design of the suction brush implies the presence of a first pressure plate and a second pressure plate, transmitting the pressing force from the button unit to the movable panel, when the user presses the front or back of the button unit, as well as a rotary shaft mounted to rotate in the brush body in direction of its width. The button block of the suction brush of the vacuum cleaner is entirely located on one side relative to the rotary shaft, and the first and second pressure plates protrude outward at the same angle from the opposite sides of the rotary shaft.

The suction brush may also include a first wheel and a second wheel, which are rotatably located at opposite ends of the front of the lower surface of the brush body and rest on the surface to be cleaned when the front and rear locking elements are in the lowered state, so that the brush body moves easily along the surface to be cleaned. surfaces despite suction.

The first and second locking levers can be made of soft material to create a closer contact between the surface being cleaned and the first and second locking levers.

BRIEF DESCRIPTION OF THE DRAWINGS

The above-described aspect and other features of the present invention will be apparent and more apparent from the following detailed description of embodiments of the suction brush, considered in conjunction with the accompanying drawings, in which:

Figure 1 is a perspective view of a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention;

FIG. 2 is an exploded perspective view of an upper part of a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention; FIG.

Figure 3 is a perspective view of the lower part of the suction brush for a vacuum cleaner in disassembled form in accordance with an illustrative embodiment of the present invention:

FIG. 4 is a schematic perspective view along line IV-VI of FIG. 1, showing a first cleaning mode of a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention;

5 is a schematic perspective view showing a situation where a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention moves forward in a second cleaning mode;

6 is a schematic perspective view showing a situation where a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention moves backward in a second cleaning mode.

In all the drawings, the same reference numbers refer to the same parts, components, and structures.

DETAILED DESCRIPTION OF THE INVENTION

The following is a detailed description of a suction brush for a vacuum cleaner in accordance with illustrative embodiments of the present invention, with reference to the accompanying drawings.

FIG. 1 is a perspective view of a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention, and FIG. 2 and FIG. 3 are exploded perspective views of the upper and lower parts of the suction brush for a vacuum cleaner shown in FIG. 1 .

With reference to FIGS. 1-3, a suction brush for a vacuum cleaner in accordance with an illustrative embodiment of the present invention includes a housing 10, a rod 20, a movable panel 30, a front locking member 40 and a rear locking member 50.

The brush housing 10 includes a top cover 11, a bottom cover 13, and a duct cover 15. The bottom cover 13 is mounted under the top cover 11. The duct cover 15 is connected to a first through hole 11a formed at the top of the central part of the top cover 11 so as to direct the flow of dusty air from the surface being cleaned through the suction hole 13a of the bottom cover 13 into an extension tube (not shown) coming out of the body (not shown) of the vacuum cleaner. The lower cover 13 has a guide groove 13b located in the direction of its width on its lower surface so as to direct dust from the surface being cleaned to the suction port 13a. In this case, the suction hole 13a is in fluid communication with the cover 15 of the duct and is located essentially in the center of the guide groove 13b. The air duct cover 15 has an air inlet 15a and a fixing unit 17. The air inlet 15a is located on the front of the lower surface of the air duct cover 15 so that the dusty air stream from the surface being cleaned through the suction hole 13a is sucked through the air inlet 15a, and a locking unit 17, removably mounted in the lower part of the duct cover 15, holds the stem 20 in a rotated state. The locking unit 17 has a connecting opening 17b for connecting the suction hole 13a of the bottom cover 13 and the air inlet 15a for the cover 15 of the duct.

The rod 20 comprises a button unit 21, a rotary shaft 23, a first pressure plate 25 and a second pressure plate 27. The vacuum cleaner suction brush unit 21 is entirely located on one side with respect to the rotary shaft 23 and is accessible from the outside of the upper cover 11 through the second a through hole 11b so that the user can control the suction brush.

When the user presses the button block 21 of the brush body 10 forward or backward, the button block 21 can switch the suction brush between the first cleaning mode and the second cleaning mode. The first cleaning mode is more suitable for cleaning carpets, since in the first mode the front and rear blocking elements 40 and 50 can be lifted and placed inside the top cover 11, while the second cleaning mode is more suitable for cleaning floors made of wood, linoleum or other materials, since in the second mode, the front and rear locking elements 40 and 50 can be lowered and protrude from top to bottom from the outer side of the upper cover 11. The rotary shaft 23 includes rotary protrusions 23a and 23b protruding from its opposite ends in. The pivoting protrusions 23a and 23b cooperate with the supporting ribs 11c and 11d so that the pivoting shaft 23 is pivotally supported, while the central portion 23c of the pivoting shaft 23 is slidably inserted into the first groove 15b located in the width direction of the duct cover 15 on the periphery of the inlet 15 a of the cover 15 of the duct, as well as the second recess 17 a of the fixing block 17, which corresponds to the first groove 15 b. The first and second pressure plates 25 and 27 protrude at the same angle from the opposite ends of the rotary shaft 23 so that the movable panel 30 can be pressed or pressed by turning the rotary shaft 23 clockwise or counterclockwise while operating the button unit 21.

The movable panel 30 is arranged so that it can be raised or lowered along the first guide shaft 11e and the second guide shaft 11f of the upper cover 11, which pass through the first hole 32a and the second hole 32b of the movable panel 30, respectively, in the space formed between the upper cover 11 and a lower cover 13. In this case, the movable panel 30 is flexibly connected to the lower cover 13 by means of a first coil spring 31 a and a second coil spring 31 b that surround the supporting protrusions 13 c and 13 d of the lower cover 13. The upper ends of the first and second coil springs 31a and 31b are fixed in the first and second openings 32a and 32b. In addition, in the middle of the movable panel 30 there is a through hole 33 through which the locking unit 17 passes so that the movable panel 30 can easily move up and down between the upper cover 11 and the lower cover 13, without touching the locking unit 17. The first and second the pressure plates 25 and 27 of the rod 20 are inserted, respectively, from opposite sides into the through hole 33, thereby forming the first slot 34a of the pressure plate and the second slot 34b of the pressure plate, which are crimped respectively by the pressure plate 25 and 27. In addition, on the movable panel 30 there is a first recess 35a and a second recess 35b located at opposite ends of its lower surface, in which the first wheel 71 and the second wheel 72 are rotatably mounted. When the front blocking element 40 moves in close contact with the surface to be cleaned, the first and second wheels 71 and 72 enable the suction brush to move easily, thus enhancing the functionality of the suction brush.

The front locking member 40 includes a first locking lever 43 and a second locking lever 45 rotatably mounted in the movable panel 30 by the hinge shaft 41. The hinge shaft 41 is rotatably mounted in a third recess 36 formed in the width direction of the front of the lower surface of the movable panels 30. The first and second levers 43 and 45 have a length substantially equal to the length of the third recess 36, and their upper ends are connected to the connecting block 44 so that a predetermined angle is maintained between them. In this case, the connecting block 44 comprises a groove 44a, so that the connecting block 44 can be detachably mounted on the hinge shaft 41. At the first blocking lever 43, air intake openings 43a are arranged at equal intervals to prevent air from entering the suction opening 13a while on the second locking lever 45 there are no divided suction openings. In addition, the first and second levers 43 and 45 are respectively located front and rear of the front blocking element 40 and can thus be alternately brought into close contact with the surface being cleaned when the suction brush, working in the second cleaning mode, moves forward or backward, respectively. . To ensure the most tight contact between the surface being cleaned and the first and second locking levers 43 and 45, it is advisable to make them from a soft synthetic polymer having the necessary elasticity.

The rear blocking element 50 is mounted in a fourth recess 37 located along the length of the rear side of the lower surface and partially at opposite ends of the lower surface of the movable panel 30. The front and rear elements 40 and 50 are hermetically insulated around the periphery of the suction hole 13a, which allows maintaining a powerful suction force between the hole 13a and the surface to be cleaned.

The following is a detailed description of the operation of the suction brush for a vacuum cleaner having the above construction in accordance with embodiments of the present invention in a first cleaning mode and a second cleaning mode with reference to FIGS. 4-6.

According to FIG. 4, when the first cleaning mode is turned on, the front and rear elements 40 and 50 are in the raised position and thus do not touch the surface C to be cleaned, which may be damaged by the front and rear elements 40 and 50 if the surface is carpet.

When the user presses the front of the button block 21 in the F1 direction to actuate the suction brush in the first cleaning mode, the rotary shaft 23 can rotate a predetermined angle in the same direction in which the button block 21 was pressed (in other words, towards the front of the brush body 10), and at the same time, the first and second plates 25 and 27 can turn upward, relieving pressure from the movable panel 30. Thus, the movable panel 30 can be raised along the first and second directions vlyayuschih shafts 11e and 11f (in accordance with Figure 3) via a first coil spring 31a and a second helical spring 31b (in accordance with Figure 2), and the front and rear members 40 and 50 may be lifted from the surface being cleaned.

When the suction brush operates in the first cleaning mode, as described above, the suction brush is easily controlled while maintaining a predetermined suction force between the suction hole 13 a and the surface C.

In accordance with FIGS. 5 and 6, a second cleaning mode is preferred for cleaning the surface D, which can hardly be damaged by the front and rear blocking elements 40 and 50, such as, for example, wood or linoleum floors.

When the user presses the back of the button block 21 in the direction F2 to actuate the suction brush in the second cleaning mode, the rotary shaft 23 can rotate a predetermined angle in the same direction in which the button block 21 is pressed (in other words, in towards the rear of the brush body 10), and at the same time, the first and second pressure plates 25 and 27 can turn down. In this case, the first and second pressure plates 25 and 27 can press the first and second slots 34a and 34b down, and the movable panel 30 can be lowered along the first and second guide shafts 11e and 11f (in accordance with FIG. 3), counteracting the elastic force created by the first and second coil springs 31a and 31b (in accordance with figure 2). In addition, the first and second plates 25 and 27 can be disconnected from the first and second slots 34a and 34b and can exert constant pressure on part 30a of the upper surface of the movable panel 30 so that the front and rear elements 40 and 50 can come into close contact with surface D.

When the suction brush moves forward in direction A while operating in the second cleaning mode, the first and second locking levers 43 and 45 can rotate around the hinge shaft 41 towards the rear of the brush body 10 due to the friction force between surface D and the first and second locking levers 43 and 45, wherein the first locking lever 43 can substantially come into contact with the surface D perpendicular to it, while the second locking lever 45 can be lifted from the surface D, as shown in FIG. In this case, the first locking lever 43 allows the air to be drawn into the suction hole 13a only through the air suction holes 43a, so that the lumen of the suction hole 13a can be limited, in contrast to a conventional suction brush. Thus, the pressure loss between the suction hole 13a and the surface D can be minimized, and the suction force is kept constant.

In addition, the suction brush can be guided to move it along the surface D in order to avoid control difficulties when applying a relatively high suction force created between the hole 13a and the surface D by the first lever 43 when the first and second wheels 71 and 72 are in contact with the surface D.

On the other hand, if the suction brush moves backward in direction B while operating in the second cleaning mode, the first and second locking levers 43 and 45 can rotate around the hinge shaft 41 to the front of the brush body 10 due to the friction force between the surface D and the first and second blocking levers 43 and 45, while the second blocking lever 45 can come into contact with the surface D essentially perpendicular to it, while the first blocking lever 43 can be lifted from the surface D, as shown in Fig.6. In this case, the second locking lever 45 and the rear locking element 50 are hermetically insulated around the periphery of the suction hole 13a, which allows to maintain the suction force at the maximum level. The second locking lever 45 may allow air to be drawn into the suction port 13a together with dust from the surface D, thereby providing the greatest suction efficiency.

As described above, when the suction brush moves backward, difficulties in controlling the suction brush can be avoided with a large suction force created between the suction hole 13a and the surface D by the second locking lever 45, while the first and second wheels 71 and 72 are in contact with the surface D.

As can be seen from the foregoing description, in accordance with embodiments of the present invention, the suction brush can be controlled in the first cleaning mode or in the second cleaning mode in accordance with the characteristics of the surfaces being cleaned, namely, their rigidity, the material from which they are made, and so on, in this way it becomes possible to avoid damage to the surface being cleaned, and also to provide the greatest suction efficiency.

In addition, when the suction brush moves forward while operating in the second cleaning mode, the first blocking plate of the front blocking element does not allow the suction force to weaken on the periphery of the suction hole, and then the first and second wheels allow the suction brush to easily move along the surface to be cleaned in any direction, which makes using a suction brush more convenient.

Although typical embodiments of the present invention have been illustrated and described above in order to explain the principle of the present invention, it is not limited to the presented embodiments. It should also be understood that various modifications and changes can be made without departing from the essence and scope of the invention, as defined in the attached claims. Thus, it should be understood that all such modifications, changes, and equivalent designs also fall within the scope of the present invention.

Claims (6)

1. A suction brush for a vacuum cleaner containing a front blocking element and a rear blocking element located respectively on the front and rear parts of the lower surface of the suction brush to insulate the periphery of the suction hole made on the lower surface of the brush body and create a large suction force during cleaning between the surface to be cleaned and the suction hole, while the front blocking element is mounted to rotate on the brush body so that one of its the ec is connected to the brush body, said front locking element also comprising a first locking lever and a second locking lever, designed to maintain a large suction force between the suction hole and the surface to be cleaned, alternately bringing them into close contact with the surface being cleaned when the suction brush moves forward or back, and the first locking lever has holes for air intake, designed to prevent the passage of air flow into the suction the opening when the first locking lever is in close contact with the surface being cleaned while moving the brush body forward. 2. The suction brush according to claim 1, in which the locking elements are made with the possibility of raising or lowering with respect to the surface being cleaned. 3. The suction brush according to claim 2, in which the brush housing is mounted with the possibility of raising or lowering and contains a movable panel on which the front and rear blocking elements are mounted. 4. The suction brush according to claim 3, further comprising a rod that comprises a button block located on the brush body, a first pressure plate and a second pressure plate for transmitting a pressing force from the button block to the movable panel when the user presses the front or rear part of the button unit, and a rotary shaft mounted to rotate inside the brush body in the direction of its width, and the button block of the suction brush of the vacuum cleaner is entirely located on one side of the rotary shaft And the first and second pressure tabs protrude at the same angle from opposite sides of the rotary shaft. 5. The suction brush according to claim 2, further comprising a first wheel and a second wheel, which are rotatably connected at opposite ends of the lower surface of the brush body and rest on the surface being cleaned when the front and rear blocking elements are in a lowered state, so that the brush body easily moves on the cleared surface despite the soaking up effort. 6. The suction brush according to claim 1, in which the first and second locking levers are made of soft material to create a closer contact between the surface being cleaned and the first and second locking levers.

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