TWI615120B - Device for a cleaning device with a suction blower - Google Patents

Abstract

The invention relates to a device for a cleaning device having a suction blower. The device has a suction port provided with a sealing lip and a brush row made of a rubber elastic material, wherein a connecting piece extends along the suction port. A sealing lip and a brush row are arranged on the upper part, and the connecting piece is installed in a housing having a suction port. The device is, for example, a motor-driven brush or any other floor nozzle of a vacuum cleaner. According to the invention, the sealing lip is supported by the brush row, thereby avoiding the vacuum fixing of the suction port on the floor surface to be cleaned and / or the tilting of the suction port with respect to the floor surface. In this case, the brush row has one or more brushless sections along the sealing lip, so that although the sealing lip is supported by the brush row, satisfactory coarse dirt absorption is ensured.

Description

Device for cleaning equipment with suction blower

The invention relates to a device for a cleaning device having a suction blower. The device has a suction port provided with a sealing lip and a brush row made of a rubber elastic material, wherein a connecting piece extends along the suction port. A sealing lip and a brush row are arranged on the upper part, and the connecting piece is installed in a housing having a suction port. The device is, for example, a motor-driven brush or any other floor nozzle of a vacuum cleaner. In addition, the device can be a component of a vacuuming robot.

Suction cleaning devices, such as vacuum cleaners, are known in the prior art, which have a suction head with an elongated suction opening. Many such cleaning devices are provided with a sealing lip and / or a brush row on the suction port in order to improve the cleaning performance of the related device.

In order to prevent the sealing lip of the floor nozzle, which is usually made of elastomer, from breaking off too easily in the use of a floor cleaner, it has been proposed to support the sealing lip by a non-flexible profile. However, tests have shown that this support of the former sealing lip cannot be prevented in a motor-driven carpet brush with a chassis: when the chassis of the carpet brush rises from the floor, the suction nozzle is vacuum-fixed on the floor during the return stroke. In the intuitive operation of floor vacuum cleaners or suction ducts with connected electric carpet brushes, Gravity is too small to hardly avoid this. Although the support effect can be enhanced by the increase of non-flexible support profiles, this also causes the profiles to wear on the floor, which can lead to wear marks or floor damage.

The object of the present invention is to provide a device of the type mentioned at the beginning so as to support its suction opening, so as to avoid the vacuum fixing or tilting of the suction opening on the floor surface to be cleaned, especially during the return of the suction opening. In addition, in the floor nozzle of the floor cleaner, direct contact between the front edge of the floor nozzle and the floor should be avoided. In addition, satisfactory coarse dirt absorption should be ensured here.

This object is achieved by a device having the characteristics given in claim 1. Preferred and advantageous designs of the device according to the invention are given in the dependent claims.

The invention proposes that in the device of the type mentioned at the beginning, the sealing lip is supported by a brush row, so as to avoid the vacuum fixing of the suction port on the floor surface to be cleaned and / or the tilt of the suction port relative to the floor surface, and the hair The brush row has one or more brushless segments along the sealing lip. The total length of the brushless section is, for example, in the range of 35-70% of the length of the sealing lip, preferably in the range of 40-60%.

The brush lip is reliably supported by such a brush row having a plurality of brushless segments, so that the front edge of the floor nozzle or the front area before the nozzle is sufficiently stable during the return stroke. In addition, the brushless section guarantees satisfactory coarse dirt absorption. Because although the sealing lip is supported by the brush row, satisfactory coarse dirt absorption can be performed in advance, because in order to make In the section where the coarse dirt passes through the brushless one or more sections of the sealing lip can be moved, wherein a gap is formed between the moving section of the sealing lip and the floor surface.

An advantageous embodiment of the device according to the invention is characterized in that at least one brushless section of the brush row extends along the sealing lip over a distance which is greater than or equal to that of the brush row with adjacent brushes. The distance the segment extends. With sufficient support of the sealing lip, a relatively large total channel area is thus obtained in the brush row for the absorption of coarse dirt in the direction of the suction opening.

According to another advantageous design solution of the device of the present invention, the connecting member is formed into a beam, wherein the sections of the brush row with the brushes are formed into different lengths, and the brush row with the brushes is provided on the end of the beam The longest section of the section and / or the shortest section of the section with a brush in which a brush row is provided in the middle of the beam. By arranging the longest section of the section with the brush row of the brush row on the end of the beam, a high safety is achieved in preventing the inclination of the suction opening with respect to the floor surface to be cleaned, and by adjoining this short The shortest section with a brush is provided in the middle of the section with a brush, and a relatively large channel area for coarse dirt absorption in the direction of the suction port can be obtained.

In this context, a further advantageous design of the device according to the invention consists in that the length of the section of the brush row with the brushes gradually increases from the middle of the beam towards the end of the beam. As a result, the sealing lip or the suction opening is adequately supported, in order to absorb coarse dirt in the direction of the suction opening, an optimized overall channel area is obtained in the brush row.

A further design of the device according to the invention consists in that a connection for receiving the force is mounted in a housing with a suction opening in a mobile manner, so that the connection is switched to the ascent with the sealing lip and the brush row arranged on it Position into the housing and can be extended from the raised position back to the lowered position. As a result, the device according to the invention can be easily adapted to various cleaning tasks, that is, it can be adapted to the cleaning of carpeted or hard floors, such as wooden or tiled floors. When the floor nozzle or electric carpet brush is switched from the hard floor state to the carpet state, the brush row is preferably raised at the same time as the sealing lip. The sealing device consisting of the sealing lip and the brush row is preferably raised and / or lowered only by the engine. According to one embodiment, the engine is controlled by the floor recognition unit so that the sealing device rises or falls according to the floor (hard floor or felt floor).

In order to achieve a high cleaning efficiency, according to another embodiment of the device according to the invention, a brush row is provided on the side of the sealing lip facing the suction opening. As a result, separated dirt can be collected from the suction port in the shortest path through the brush row and without obstruction.

According to another design of the device of the present invention, the lower edge of the sealing lip terminates at the same height as the lower edge of the brush row or when the suction port rises from the floor with cleaning, at a height ranging from 0.5mm to 4mm The difference is higher than the lower edge of the brush row protruding outward. This design is conducive to the optimized sealing effect of the sealing lip on the floor to be cleaned, the full support of the protruding sealing lip on the underside of the suction port, and the direction of the suction port through the brushless section. Satisfactory coarse dirt absorption.

Another advantageous design of the device according to the invention is characterized in that the brushes of the brush row are held in a frame, and the frame and recess are in a hairless The areas of the brush segments are aligned so that the bezel and recess define a comb-shaped or battlement-shaped structure, where the recess is covered laterally by the sealing lip. With this design, the sealing lip has a higher lip height in the area of the brushless brush, so that coarse dirt can be switched through the section of the brushless brush and thus on the lower edge of the sealing lip and to be cleaned A gap formed between the floors. The individual recesses here must not all extend across the width of the brush frame. It is also advantageous if the individual recesses are only vertical planes which extend approximately or at least up to the longitudinal axis of the brush row. In the remaining recessed area on the side of the suction opening, a rubber-elastic material of the sealing lip is preferably injected, whereby the sealing lip is advantageously connected to the cross member in a form-fitting and material-fitting manner.

Regarding the switching ability of the sealing lip or the slit structure for passing coarse dirt, it is also advantageous in accordance with a further embodiment of the device according to the invention that the sealing lip extends parallel to and spaced from the brush row. The distance between the sealing lip and the brush row is, for example, in the range of 2 to 10 mm, preferably in the range of 3 to 8 mm.

The sealing lip is preferably cast on the connecting part or the cross member. It is particularly preferred here that the sealing lip is connected to the connecting part (cross member) both in a form-fitting and form-fitting manner. This not only ensures that the sealing lip is firmly connected to the connection piece (transverse beam), but also realizes that the sealing lip is relative to the connection piece (transverse beam) and the floor suction nozzle, especially the adjacent housing area of the electric carpet brush. Optimized sealing effect.

The areas of the brush row with the brushes are preferably connected to the connecting element or the crossbeam with a material fit. This ensures that the brush is firmly connected to the connecting piece (transverse beam). Preferably, the ends of the brushes are cast from the plastic material of the connection.

The invention and the above-mentioned design can be used for different suction cleaning equipment. In particular, the suction opening of the device according to the invention can be a carpet brush shaped as an accessory, in particular a component of a carpet brush with a brush body that can be driven in rotation. The carpet brush here preferably has a chassis, the axis of rotation of the chassis being aligned substantially parallel to the connecting piece or the beam. Furthermore, the suction opening of the device according to the invention can also be part of a wet cleaning device for hard floors. In addition, the suction opening of the device according to the invention can also be a component of a vacuuming robot with a chassis.

1‧‧‧ brush or blanket brush

2‧‧‧ Housing with suction port

2‧‧‧ shell

2.1‧‧‧ Underframe

2.2‧‧‧ Cover

3‧‧‧pipe connection support

4‧‧‧ Wheel

5‧‧‧sealing lip

5.1‧‧‧ lower edge

6‧‧‧ connector; beam

7‧‧‧ fixed tension; pressure parts

8‧‧‧ Brush Row

8.1, 8.2‧‧‧ away from each other

9, 9’‧‧‧ brushless section

10, 10’‧‧‧ Adjacent brush segments

11‧‧‧ border

12‧‧‧ Recessed

13‧‧‧ lower edge

Embodiments of the present invention are explained in detail below with reference to the drawings. The drawings show: Figure 1 shows a perspective view of an engine-driven brush as an attachment to a vacuum cleaner; and Figure 2 shows a cross-section with a sealing lip and a brush row in a perspective view, which is Crossbeam of a brush or other floor nozzle of a vacuum cleaner according to FIG. 1.

FIG. 1 shows an engine-driven brush 1 which is determined to be an accessory of a vacuum cleaner. The brush 1 can be used in particular for cleaning carpets, upholstered homes or mattresses. The brush or blanket brush 1 has a casing 2, and a pipe connection support 3 is hingedly mounted on the casing. The pipe connection support 3 may also be referred to as a joint piece. A suction channel is formed in the housing 2 and the suction channel is connected to a brush cavity which also serves as a suction port. At least one brush body is contained in the brush cavity, and the brush body is driven by a transmission mechanism through an electric motor provided in the casing 2. At least one brush body code It is designed as a bristle roller (round brush). The brush cavity (suction port) is shaped like a tunnel accordingly. The suction opening or the brush cavity extends over almost the entire length of the housing 2.

The housing 2 of the engine-driven brush 1 is basically or mainly composed of a base frame 2.1 and an upper cover plate 2.2. The base frame 2.1 and the cover plate 2.2 are detachably connected to each other by, for example, screws. The chassis 2.1 has a chassis and the chassis has wheels 4. The roller 4 is preferably arranged in the rear region of the chassis 2.1. A hinge connection of a pipe connection support (joint piece) 3 is formed between the two rollers 4 on the base frame 2.1. In addition, an electric motor is installed in the chassis 2.1 as a driving device for at least one brush roller (round brush). The electric motor rotates the brush roller provided in the suction port by a transmission device (not shown in detail), such as a gear or a gear belt transmission.

The brush 1 has a sealing lip 5 on its suction port, and the sealing lip is provided between the front side of the brush 1 and the suction port. The sealing lip 5 improves the suction effect on the suction opening and thus the cleaning effect of the brush 1. The sealing lip 5 is made of a rubber elastic material, for example, an elastomer. The sealing lip 5 is arranged on a connecting piece 6 extending along the suction opening, which connecting piece 6 is used for receiving forces and may also be referred to as a cross beam in the embodiment shown. The sealing lip 5 preferably projects on the connecting part 6 so that it is connected to the connecting part 6 in a materially and form-fitting manner.

The connecting member or beam 6 is installed in the housing 2 in a movable manner, preferably in the chassis 2.1 in a movable manner. The sealing lip 5 can thus be switched from the extended position (hard floor position) protruding to the bottom side of the brush 1 to the raised position (carpet position) and returned if necessary. For this purpose, for example, a tension / pressure component 7 is fixed to the cross member 6, by means of which the cross member 6 and thus the sealing lip 5 can be pushed up and down. In addition, the hair brush 1 can With at least one support wheel (not shown), the support wheel and the sealing lip 5 can be simultaneously switched from a raised position (carpet position where the suction port is on the floor) to an extended position (hard floor position where the suction port is opposite On the floor) and return.

Furthermore, a brush row 8 is provided on the connecting piece or the crossbeam 6. The sealing lip 5 is supported by the brush row 8, so that the vacuum fixing of the suction port on the floor surface to be cleaned and the inclination of the suction port with respect to the floor surface are avoided particularly during the return stroke of the brush 1. The brush rows 8 are arranged on one side of the suction opening of the sealing lip 5. The bristle row is not shaped as continuous, but has a plurality of brushless sections 9, 9 'along the sealing lip 5. During the advancement of the brush 1, the brushless sections 9, 9 ′, despite being supported by the rubber-elastic sealing lip 5, can also ensure satisfactory absorption of coarse dirt, because for the coarse dirt to reach the brushless In sections 9, 9 ', the area of the sealing lip can be switched inwards, thereby forming a gap between the sealing lip 5 and the floor to be cleaned. After each coarse dirt has passed through the gap, the switched region of the elastic sealing lip 5 returns to its starting position again.

The brush row 8, which is shown in FIG. 2, facing the sealing lip 5 has, for example, six brushless sections 9, 9 ′. However, it is also within the scope of the invention to reduce or increase the number of brushless sections 9, 9 'of the brush row. For example, the brush row 8 may also have seven or only five brushless sections 9, 9 '. The bristle row 8 is preferably shorter than the sealing lip 5 so that the ends of the sealing lip project laterally with respect to the mutually distant ends 8.1, 8.2 of the bristle row 8.

The segments 10, 10 'of the brush row 8 are connected to the connecting member (transverse beam) 6 in a cooperative manner, for example, the end of the brush is directly cast into the material of the connecting member 6, and the connecting member is preferably made of plastic.

The plurality of brushless segments 9, 9 ′ of the brush row 8 preferably extend along a distance along the sealing lip 5, respectively, the distance being greater than or equal to the segments 10, 10 ′ of the brush row and having adjacent brushes. Extended distance. This is the case, for example, in the brushless sections 9, 9 'provided at least in the middle region of the crossbeam 6.

The areas 10, 10 ′ of the brush rows 8 with brushes are preferably formed into different lengths, wherein a section with the longest section 10 of the brushes is provided on the end of the beam 6 and a brush row is provided in the middle of the beam 6. 8 of the shortest section 10 'with a brush. In addition, it can be seen in FIG. 2 that the length of the segments 10, 10 'of the brush row with the brushes gradually increases from the middle of the beam 6 toward the end of the beam 6.

The brushes of the brush row are held in a frame 11, and the frame is preferably aligned with the recess 12 in the area of the section without the brush 9, 9 ', so that the frame 11 and the recess 12 define a comb-shaped or battlement-shaped structure . The height of the bezel 11 or the recess 12 is, for example, in a range of 2 mm to 5 mm. The recess 12 is covered by the sealing lip 5 toward the front side of the brush 1. The recess 12 increases the free height of the sealing lip 5 in the area of the brushless sections 9, 9 ′, so that the sealing lip 5 has a plurality of parts for the coarse dirt to be switched to a hairless part Free switching space in brushed sections 9, 9 '. In addition, the increased free length of the brush or the increased height of the frame 11 improves the safety of preventing the brush supporting the sealing lip from bending.

The lower edge 5.1 of the sealing lip 5 and the lower edge 13 of the brush row 8 terminate at about the same height or when the suction port rises from the floor to be cleaned, the height difference in the range of 0.5 mm to 4 mm is higher than the brush row The lower edge 13 of 8 projects outward.

Embodiments of the device according to the invention are not limited to those depicted in the drawings 实施 例。 The described embodiments. Conversely, it is also possible to consider a plurality of variants which are used in a design which deviates from the described embodiment in the invention given in the dependent claim. In this way, the present invention can be used not only for carpet brushes of electric motors, but also for any other floor nozzle of a vacuum cleaner.

5‧‧‧sealing lip

5.1‧‧‧ lower edge

6‧‧‧ connector; beam

7‧‧‧ fixed tension; pressure parts

8‧‧‧ Brush Row

8.1, 8.2‧‧‧ away from each other

9, 9’‧‧‧ brushless section

10, 10’‧‧‧ Adjacent brush segments

11‧‧‧ border

12‧‧‧ Recessed

13‧‧‧ lower edge

Claims (10)

An apparatus for a cleaning device having a suction blower, the apparatus having a suction port provided with a sealing lip and a brush row made of a rubber elastic material, wherein a connecting piece extends along the suction port The sealing lip and the brush row are arranged above, and the connecting piece is installed in a housing having the suction port, wherein the sealing lip is supported by the brush row, thereby avoiding the suction The vacuum fixing of the mouth on the floor surface to be cleaned and / or the inclination of the suction opening relative to the floor surface, wherein the brush row has a plurality of brushless sections along the sealing lip, the sealing lip One or more sections of the sealing lip may be moved into one or more sections of the brushless section of the brush row to allow coarse dirt to pass, wherein the moving section of the sealing lip and the floor surface A gap is formed between them. The device according to claim 1, wherein at least one brushless section of the brush row extends along a distance along the sealing lip, and the distance is greater than or equal to that of the brush row. The distance the segments with adjacent brushes extend. The device according to claim 1 or 2, wherein the connecting member is formed into a beam, wherein sections of the brush row having a brush are formed into different lengths, and wherein at the end of the beam The longest section of the section of the brush row having a brush and / or the shortest section of the section of the brush row having a brush is provided in the middle of the beam. The device according to claim 3, wherein the brush row has a The length of the brushed section gradually increases from the middle of the beam toward the end of the beam. The device according to claim 1 or 2, characterized in that a connecting member is mounted in a mobile manner in a housing having a suction port, so that the connecting member and the sealing lip and the brush provided thereon The rows are switched together into the raised position into the housing and can be extended from the raised position back to the lowered position. The device according to claim 1 or 2, wherein the brush row is provided on a side of the sealing lip facing the suction port. The device according to claim 1 or 2, wherein the lower edge of the sealing lip terminates at the same height as the lower edge of the brush row or when the suction port rises from the floor with cleaning, the The height difference in the range of 0.5 mm to 4 mm is higher than the lower edge of the brush row protruding outward. The device according to claim 1 or 2, wherein the brushes of the brush row are kept in a frame aligned with the recesses in the area of the brushless brush section, so that The bezel and the recess define a comb-shaped or battlement-shaped structure, wherein the recess is covered laterally by the sealing lip. The device according to claim 1 or 2, wherein the sealing lip extends parallel to and spaced from the brush row. The device according to claim 1 or 2, characterized in that the sealing lip is cast on the connecting piece and / or the brush segment of the brush row is connected to the connecting piece in a material fit .