RU2331353C2 - Vacuum cleaner suction device - Google Patents

Abstract

FIELD: personal effects.

SUBSTANCE: invention refers to vacuum cleaner suction device. Suction device of vacuum cleaner (1) has triangular shape and contains two side skirtings (5, 6), which form sharp part of the suction device. The basement (11) of the suction device contains two suction channels (19, 20), located along the side skirtings (5, 6) and opened in the direction of the surface being cleaned. On edge of each suction channel front brush (55, 56) and back brush (57) are installed, the said brushes being located on both sides of the channel almost parallel to it. Brushes (55, 56, 57) can be moved in two positions relative to the basement (11) using a mechanism actuated by pedal lever (8).

EFFECT: increased waste collection effectiveness.

13 cl, 9 dwg

Description

The present invention relates to a suction device of a vacuum cleaner and, in particular, solves the problem of increasing the efficiency of garbage collection.

The suction devices of vacuum cleaners are nodes for collecting garbage accumulating on the surface being cleaned. Therefore, in recent years they have undergone numerous improvements, in particular, with the aim of increasing the efficiency of garbage collection.

In the past, many options for triangular shaped suction devices have been proposed. In French patent FR 2773458, the applicant’s name, in particular, indicated the advantage of making a front opening in the pointed part of the suction device, which allows the suction of debris slightly in front of the suction device, which, in addition to the corresponding pointed shape of the suction device, also allows, in particular, to facilitate cleaning garbage in the corners and crevices of rooms. However, such a suction device according to this patent does not contain lifting brushes.

Such brushes were proposed in other documents, in particular in US patent US 2394798, according to which the edge of the sole of the suction device contains two brushes located inside the sides, forming the pointed part of the suction device, and partially limiting the central suction hole.

In patent application EP 0606169, the suction device of a vacuum cleaner of a triangular shape comprises two suction channels made along the sides forming the pointed part of the suction device. A fixed brush is installed along the edge of each of these channels at the bottom of the suction device. Such brushes cannot be lifted depending on the nature of the surface being treated. In addition, when moving in the rear direction, brushing is not directly accompanied by suction.

An object of the present invention is to eliminate the disadvantages of the prior art by means of a triangular suction device having improved characteristics and, in particular, containing two brushes that can be lifted using a simple device that does not affect the compact shape of the suction device.

This technical problem is solved by using a suction device of a vacuum cleaner, essentially triangular in shape, containing, in particular, two side walls that form the pointed part of the suction device, while the specified suction device is made open towards the surface to be cleaned using at least two suction channels passing in the sole of the suction device along two side edges forming the pointed part of the suction device, characterized in that the edge of each suction A front brush and a rear brush are installed on the channel, and these brushes are located on both sides of the channel almost parallel to the latter.

By installing brushes along the edge of each suction channel, thereby increasing the suction efficiency at the level of the channels, since the latter turn out to be somewhat closed by these brushes. In addition, there are two brushing operations directly followed by suction, regardless of the rear or front direction of movement of the suction device.

Preferably, the suction device is in the form of an isosceles triangle and has a rear side connecting the side sides, while two channels along the side sides are connected in front of the suction device.

This configuration ensures the stability of the suction device and facilitates its movement. In addition, the connection of the two channels in the front of the suction device simplifies the design and facilitates the manufacture of the suction device to some extent, since the common area is open at the sole level of the suction device.

According to a preferred embodiment, the brushes can occupy two positions: a position in which they protrude outward with respect to the sole of the suction device, and a position in which they do not reach the specified sole slightly, both positions being controlled by a pedal-operated mechanism located at the level of the suction device cover.

This embodiment allows you to get different contact areas, depending on the nature of the surface to be treated and / or the provided actions. Indeed, it is necessary to be able to precisely position the brushes in order to provide an appropriate effect on the surface being treated, for example, a palace, in order to remove debris stuck in the pile from it. The lowering and raising of the brushes is carried out using the pedal, driven by the foot and located at the level of the cover of the suction device.

According to a preferred embodiment, the mechanism comprises:

- two rockers with brushes mounted on them, made with the possibility of vertical movement relative to the sole with overcoming the return force of two springs;

- two carriages moving in the horizontal direction, each of which is made with the possibility of interaction with an inclined cam surface during this horizontal movement;

- a connecting rod connecting the drive pedal to two carriages.

The conversion of the horizontal movement of the carriages into the vertical movement of the rocker arms with brushes mounted on them using an inclined cam surface allows using this simple mechanism to ensure a compact shape of the suction device due to the small size of the mechanism.

According to this design, the pedal is mounted rotatably on the sole of the suction device, while the rod is connected, on the one hand, to the pedal using a section parallel to the axis of rotation of the pedal, and, on the other hand, to the carriages using sections practically perpendicular to the axis of rotation of the pedal so that turning the pedal results in horizontal movement of the carriages.

Preferably, the rocker arms and carriages are arranged symmetrically with respect to the median vertical plane of the suction device, which makes it possible to evenly distribute the forces on each assembly formed by the carriage, rocker arm, front brush and rear brush. Such symmetry provides uniform movement of different brushes.

According to a preferred embodiment, the brushes on the back of the channels are connected at the connection level of the two side channels in the form of an inverted V-shaped profile.

The presence of this rear brush, made curvilinearly from one side to the other side of the suction device, provides in the extended position of the brushes normal stability of the suction device on the work surface and does not allow the suction device to tilt back or forward during its movement. Thus, the suction device remains constantly in a horizontal position on the work surface.

According to this latter configuration, each beam comprises reference points of one of the front brushes and a portion of the reference points of the rear brush.

Preferably, the front edge of the suction device comprises at least one front opening intended to provide suction in a direction substantially parallel to the surface being cleaned, said front opening being connected to one of the suction channels.

One of the advantages of this design is not only the ability to physically direct the suction device to the corners of the rooms, but also to provide real suction at the level of the pointed part and even slightly in front of this pointed part through the front opening made in this way. This design eliminates the need for small cleaning accessories, which are usually installed instead of the suction device to provide access to bottlenecks, such as corners and crevices.

In addition, it is now possible to easily and practically direct the pointed part to the garbage to be collected or to the corners being cleaned, since this pointed part is located on the axis of the tube, that is, on the axis of application of the pushing force when moving the suction device. Thus, it becomes possible to aim at any object in open space, and not just in corners.

Other features and advantages of the present invention will be better understood from the following description, given by way of non-limiting example, with reference to the accompanying drawings.

Figure 1 is a schematic view, top view of a suction device in accordance with the present invention.

Figure 2 is a bottom view of a suction device in accordance with the present invention.

Figures 3 and 4 are perspective views, respectively, a top view and a bottom view, of some constituent parts of a suction device in accordance with the present invention.

5 and 6 are perspective images, a side view, respectively, of a suction device with extended brushes and a suction device with raised brushes.

7 and 8 are images, a side view, respectively, of a suction device with extended brushes and a suction device with raised brushes.

Fig.9 is a detailed image of a suction device in accordance with the present invention.

The present invention relates to a suction device 1 of a vacuum cleaner. Such a suction device comprises a connecting tube 2 for connecting it to a vacuum cleaner body, not shown in the drawings, including, in particular, a fan with a drive that generates a suction air stream.

The connecting pipe 2 exits at the level of the sole 11 of the suction device in contact with the floor 4 being cleaned, through the connecting pipe 3. This pipe communicates with the suction channels. These channels typically follow the shape of the suction device to increase suction efficiency. In the presented example, where the suction device has a triangular shape, the suction channels shown by the dashed line 10 are made partially along the two sides 5, 6, forming the pointed part of the suction device, as well as in the specified pointed part of the suction device after connecting them in the Central part of the suction device . The sides 5, 6 are connected by the rear side 9.

Preferably, the corner zone forming the pointed portion of the suction device comprises a front opening 7 providing suction in a direction substantially parallel to the surface being cleaned.

In addition, in the illustrated embodiment, the suction device comprises lifting brushes that are driven by the rotary pedal 8. The pedal 8 is pressed at the level of the cover 12 of the suction device. In the presented example, this cover mainly performs only aesthetic and protective functions.

Indeed, the suction channels are closed, on the one hand, by an internal structure, partially made during the formation of the sole, while a part of the suction channels is located along the sides and goes into the hole 7, as well as the upper part 14, which in this embodiment is a visual observation zone and made with the possibility of visual observation through a transparent triangular part in the sole.

This distinguishing feature allows you to control the debris 16 on the surface being cleaned during cleaning. In accordance with the shape of the suction device and the suction channel or suction channels, this visual observation area can cover a field of view larger than the suction channel to better target debris collected from the floor.

Preferably, the visual observation zone is made with the effect of a magnifying glass and has a convex shape. Due to this, the debris under the visual observation zone is observed in an enlarged form, which improves the visibility of the surface being cleaned.

Figure 2 shows a suction device, a top view. The sole 11 of the suction device contains several suction channels: channel 19, almost parallel to the side 6 of the suction device, channel 20, almost parallel to the side 5 of the suction device. These channels are connected to each other in the central zone 21 of the suction device. Channels 19 and 20 contain front openings, that is, openings in the vertical sides of the sole, 36 and 35, respectively, providing lateral suction almost parallel to the surface being cleaned.

In the rear part of the suction device, the triangular shape is supplemented by a solid part 40 containing two slots 42 for installing means for moving the suction device, which can be either in the form of PTFE skids or in the form of wheels.

In addition, in the zone 21 between the side 5 and the side 6, the suction device further comprises a plate 23, thus defining the front channel 18 and the rear channel 22, while the front channel 18 enters the pointed part of the suction device through the front hole 7. This plate 23 contains zone 24, on which the thread collection fabric known from the prior art is fixed.

This plate 23 connects the side 5 to the side 6 in the form of a bridge, forming a space between the side opposite to zone 24 and the upper part 14. This plate is preferably made parallel to the rear side 9 of the suction device.

The second area 124 with thread collection fabric can be performed on the side of the channel 22, symmetrically thread collection zone 24.

Each of the channels 19 and 20 contains scraper plates 46 and 45, made respectively from the side 6 and side 5 to the opposite side in the suction channel. In the presented example, these plates are stationary and are made in the lower plate of the suction device almost parallel to the rear flange 9 at a distance approximately equal to half the width of the channel. Preferably, the plates do not protrude or only slightly protrude outward with respect to the bottom plate of the suction device.

In accordance with the present invention, the suction device comprises brushes 55, 56, 57, while these brushes are made lifting and can move in the sole. The brush 55 is located between the suction channel 20 and the side 5, while the brush 56 is located between the suction channel 19 and the side 6. Since the channels 19 and 20 are connected to each other in front of the suction device, forming an inverted V-shaped profile, the rear brush 57 repeats this shape along the side defined by these two channels and the point of their meeting. As shown in FIGS. 3 and 4, the rear brush 57 contains, in particular, a cutout 157 in the middle part of the brush, that is, in the tray-shaped shape of the brush, to ensure that debris that can accumulate in this place of the brush during rearward movement of the suction device is sucked .

5, 6 and 7 separately show brushes and a mechanism for controlling the movement of these brushes. In addition to the location of the pedal, a hallmark of the mechanism is its complete symmetry with respect to the median vertical plane perpendicular to the suction device.

The pedal 8 contains a lateral protrusion 81, intended for its connection with the sole of the suction device through the vertical part 82 shown in Fig. 8 and containing an opening into which the protrusion enters. The protrusion thus mounted in the part 82 forms a rotary axis of the pedal. The latter also contains a hollow protrusion 83.

In addition, the pedal is connected to a rigid transmission rod 28, while the specified rod is mounted on the pedal in the continuation of the rotary axis of the pedal, that is, in the continuation of the protrusion 81, as shown in Fig.4. This rod contains several knees forming a special shape, the distinguishing feature of which is that it remains flat, forming, in particular, a horizontal part 280 intended for connection with the pedal, and two almost vertical parts 282. The latter are located at each end of the rod, and each of them is connected to the carriage 85, 86. The vertical part 282, located under the pedal, passes in the hollow part of the protrusion 83 of the pedal, which thus acts as a guide for traction and provides transmission of force to the traction.

Rod 28 is also installed on two vertical brackets 128, made integral with the sole.

The carriages 85, 86 are identical L-shaped parts and comprise a sufficiently long horizontal part directed towards the front of the suction device and a shorter vertical part directed down. These carriages are installed between the sole of the suction device and the cover with the possibility of only horizontal movement to the rear side or to the front side of the suction device. Two arch arches made at the sole of the bridge 194, in which the carriages 85, 86 are installed, impede, in particular, any vertical movement of these carriages.

At the front end of the horizontal part, each carriage 85, 86 has a beveled profile 185, 186, respectively. These beveled sections form cam surfaces intended to interact with the identically beveled parts 125, 126 of independent parts 75, 76, respectively called rocker arms when horizontally moving said carriages. With their upper part, the beveled parts 125, 126 are mated with practically flat horizontal sections 25, 26, respectively.

Thus, each carriage 85, 86 can interact respectively with the rocker 75 and the rocker 76. The rockers are almost flat parts mounted in the suction device with a certain degree of freedom in the vertical direction, being limited in horizontal deviation mainly by the sole of the suction device, for example, with the help of guide protrusions 192, which are made in the sole and on which the rocker arms can slide with their holes 175, 176, corresponding to the protrusions 192. For information to min Mumu friction between the rocker arm and the sole, each projection or some of them may contain thickening or small vertical tides to facilitate vertical translational motion rocker arm.

Preferably, the sole may also include thickenings under each carriage to hold the carriages in the extended position of the brushes to avoid involuntarily turning off the mechanism.

As shown in FIG. 9, a spring 165, 166 is mounted between each beam 75, 76 and the sole of the suction device.

Each beam contains sockets 65, 66 for brushes 55, 56, while each brush is held in the socket mainly by means of elastic clips such as clips 95, 96. In addition, the support of the rocker arm in the lower direction is provided by the locking areas for the vertical movement of the rocker arm in the lower direction, formed by the contour of the brush sockets. The contact thus created with the corresponding parts of the sole of the suction device provides sufficient tightness.

The rear brush 57 is half-held by each rocker with clips 97, 98 and, as with the brushes 55, 56, the rocker arm is lowered while the brushes are pulled out by contact between the brush socket outline and the sole.

During operation, in the position in which the brushes remain raised, shown in FIGS. 6 and 8, the beveled parts 125, 126 of the rocker arm and the beveled parts 185, 186 of the carriages are practically at the same level next to each other.

When the user wants to extend the brushes, he presses the back of the pedal. The pedal rotates clockwise in the figures, which causes the rod to turn in the same direction.

Almost vertical sections 282 also rotate, leading to a forward movement of the carriages 85, 86 connected to the ends 282 of the specified traction. This movement of the carriages causes the beveled parts of the carriages to interact with the beveled parts of the beam. Due to the impossibility of vertical movement of the carriages and the impossibility of horizontal movement of the rocker arms, the latter, under the action of moving the carriages forward, begin to move vertically downward, overcoming the return force of the springs 165, 166, while the clearance of the bevels allows the rocker arms 75, 76 to slip under the carriages 85, 86, and the last based on the flat parts 25, 26, respectively.

This vertical movement of the rocker arm in the lower direction allows the brushes to extend beyond the plane defined by the bottom of the sole.

When the user wants to lift the brushes, he turns the pedal counterclockwise, the ends of the rod 282 return back, causing the same movement of the carriages 85, 86. As soon as the beveled parts of the carriages and the rocker arm come to the same level, the return force of the springs acts on the rocker arms, accelerating their lifting and returning the carriages to the back position.

The present invention is not limited to the specific embodiment presented, and may have technical equivalents. In particular, the rear brush 57 may be made in the form of two separate straight sections, each of which is held by its respective beam. It is also possible to provide for the presence of two pedals mounted on either side of the connecting tube 2, with each pedal being driven for its own carriage or directly acting on the corresponding beam.

Claims (13)

1. The suction device (1) of the vacuum cleaner, essentially triangular in shape, containing two side edges (5, 6), forming the pointed part of the suction device, while the specified suction device is open towards the surface to be cleaned using at least two suction channels ( 19, 20) made in the sole (11) of the suction device (1) along two sides (6, 5), characterized in that front brushes (56, 57) and a rear brush are installed along the edge of each suction channel (19, 20) (57), while these brushes are located on both sides from the channel and almost parallel to it. 2. The suction device (1) according to claim 1, characterized in that it has the shape of an isosceles triangle and comprises a rear side (9) connecting side sides (5, 6) to each other, and two channels (20, 19) are located along lateral sides (5, 6) and are connected to each other in front of the suction device (1) (21). 3. The suction device (1) according to claim 1 or 2, characterized in that the brushes (55, 56, 57) are configured to be installed in two positions, in one of which they protrude outward with respect to the sole (11) of the suction device (1), and in the other of which they slightly do not reach the indicated sole (11), while both positions are controlled by a mechanism actuated by the pedal (8) located at the level of the cover (12) of the suction device (1). 4. The suction device (1) according to claim 3, characterized in that the mechanism comprises: two rockers (75, 76) with brushes installed on them (55, 56, 57), made movable in the vertical direction relative to the sole (11) and moving, overcoming the return force of two springs (165, 166); two carriages (85, 86), each of which is made with the possibility of horizontal movement and interaction with one of the rocker arms (75, 76) through an inclined cam surface (125, 126, 185, 186) during horizontal movement; connecting rod (29) connecting the drive pedal (8) with two carriages (85, 86). 5. A suction device (1) according to claim 4, characterized in that the pedal (8) is mounted rotatably on the sole (11) of the suction device (1), and the rod (28) is connected, on the one hand, to the pedal (8) ) section (280) parallel to the axis of rotation of the pedal, and, on the other hand, with the carriages (85, 86) through sections (282), essentially perpendicular to the axis of rotation of the pedal (8), so that the rotation of the pedal (8 ) led to the horizontal movement of the carriages (85, 86). 6. The suction device (1) according to claim 5, characterized in that the rocker arms (75, 76) and the carriage (85, 86) are made symmetrically with respect to the median vertical plane of the suction device (1). 7. The suction device (1) according to one of claims 2, 4-6, characterized in that behind the channels (19, 20), the brushes (57) are connected at the level of the connection (21) of the two side channels in the form of an inverted V-shaped profile . 8. The suction device (1) according to claim 7, characterized in that each beam (75, 76) contains reference points (95, 96) of one of the front brushes and part (97, 98) of the reference points of the rear brush. 9. A suction device (1) according to claim 7, characterized in that the front edge of the suction device contains at least one front opening (7), designed to ensure suction in a direction almost parallel to the surface being cleaned (4), while the front the suction hole (7) is connected to one of the suction channels (19, 20, 21). 10. The suction device (1) according to claim 3, characterized in that behind the channels (19, 20), the brushes (57) are connected at the level of the connection (21) of the two side channels in the form of an inverted V-shaped profile. 11. The suction device (1) according to claim 10, characterized in that each beam (75, 76) contains reference points (95, 96) of one of the front brushes and part (97, 98) of the reference points of the rear brush. 12. The suction device (1) according to claim 3, characterized in that the front edge of the suction device contains at least one front opening (7), designed to provide suction in a direction almost parallel to the surface being cleaned (4), while the front the suction hole (7) is connected to one of the suction channels (19, 20, 21). 13. The suction device (1) according to one of claims 1, 2, 4-6, 8-11, characterized in that the front edge of the suction device contains at least one front opening (7), designed to provide suction in the direction almost parallel to the surface being cleaned (4), while the specified front suction hole (7) is connected to one of the suction channels (19, 20, 21).

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