CN101543388A - Suction nozzle of cylindrical vacuum dust collector - Google Patents

Abstract

The invention relates to a suction nozzle for a cylindrical vacuum cleaner, comprising: a substantially rectangular suction head (1) in plan view; a sliding base (2) having at least one suction slot (4) on the bottom side bounded by an edge (3) of the suction opening ; the suction pipe connection (5), which is movably mounted on the suction head or the suction channel (6), which is rotatably connected to the suction head, about the axis of rotation; and the telescopic support and seal (7 ) for vacuuming smooth floors on the underside of the nozzle. The support and seal are fixed on a vertically movable support in the suction head, which support can be actuated by means of a switch (8) operable on the suction head. According to the invention, the support and seal, which is arranged parallel to the tip front (F) in the region of the tip front, consists of two dimensionally stable edge sections (10, 10') and preferably a flexible unsupported front section (11) Composition, the edge section is used to support the suction head on the floor side and is arranged on the outer surfaces of both sides of the suction head, and the front section is arranged between the edge sections.

Description

Nozzles for cylinder vacuum cleaners

technical field

The present invention relates to a nozzle for a cylinder vacuum cleaner capable of universal vacuuming of smooth floors and fabric coverings on floors. The basic structure of the suction nozzle includes: a suction head that is substantially rectangular in plan view; a sliding base with at least one suction slot on the bottom side bounded by the edge of the suction mouth; a suction pipe joint that is movably mounted on the suction head or On the suction channel, the suction channel is rotatably connected to the suction head; and a retractable support and seal for vacuuming the smooth floor on the bottom side of the suction nozzle, wherein the support and The seal is fixed to a vertically movable support in the suction head, which support can be actuated by means of a switch operable on the suction head.

Background technique

Vacuum cleaner nozzles having cleaning properties common to smooth and fabric floor surfaces are known. Some configurations of these nozzles have retractable floor side seals for improved suction performance on smooth floors. Such floor suction nozzles are described, for example, in DE 298 12 377 U1.

When cleaning smooth floors that are soiled, for example, with coarse dirt particles the size of lentils or peas, if the above-mentioned floor suction nozzles are used, the coarse dirt particles are only absorbed by the front seal. Move on smooth floor. If the particles are very hard coarse dirt particles, there is a risk of scratching the sensitive smooth floor. In the brush attachment for floor care described in DE 197 18 497 A1, height-adjustable flexible seals are used to prevent the movement of coarse dirt particles. In this case, however, a reduction in the suction performance of the cleaning device must be taken into account. This weakening is related to the fact that as all the seals including the tip are raised, the air velocity and negative pressure, mainly on the underside of the tip, decrease, thereby reducing the suction effect.

Contents of the invention

Against this background, the object of the present invention is to increase the suction performance for coarse dirt without having to modify the suction nozzle structure in the case of a suction nozzle of the character described at the outset, which can be used universally on smooth and fabric floor surfaces. Big design changes.

According to the invention, this object is achieved by a suction nozzle according to claim 1 , in which the support and seal arranged in parallel to the suction head front in the region of the suction head front are formed by two dimensionally stable The edge section and at least one flexible unsupported front section are used to support the suction head on the floor side and are arranged on the outer surfaces of both sides of the suction head, while the front section is arranged between the edge sections.

By actuating the switch, the support provided in the tip can be lowered and the support and seal fixed to the support can protrude at the bottom side of the tip. In this case, the sliding base is raised from the floor surface so that large dirt particles, eg lentil or pea sized, under the edge of the suction opening can be caught by the suction airflow and thus sucked up from the floor. When the support is lowered and the protruding support and seal are against the floor surface, the gap between the edge of the suction opening and the floor surface is greater than 3mm, preferably 5-10mm. Since the front section is made of a soft, flexible material, movement of coarse dirt particles on the floor or floor covering is avoided. In an advantageous configuration of the suction nozzle, the front section of the support and seal is formed by a bristle strip with soft bristles through which coarse dirt particles can pass. Alternatively, the front section can also be configured as a flexible plastic lip which, under the effect of the vacuum mainly under the tip, is already slightly bent inwards and, due to its flexibility, allows coarse particles to pass through. The width of the front section is preferably 150-220mm, with soft bristles, or the front section is made of soft plastic lips. The outstanding feature of this configuration of the front section is the good sealing performance and the ability of the suction nozzle to suck up coarse dirt particles Greatly improve. The invention is also based on the consideration that the user will instinctively use the forward movement of the suction nozzle to pick up only coarse dirt that is clearly visible in terms of particle size. The user will aim the suction nozzle at visible coarse dirt in a targeted manner and instinctively use the central region of the suction nozzle to crush the coarse dirt particles.

The edge section of the support and seal that is arranged parallel to the front of the tip in the region of the tip front can be made of a bristle piece with hard bristles, a foam material piece or a soft soft material such as nonwoven material, felt or plush. Slider construction on a fabric support surface. The width of the edge section at the front can be, for example, up to 50 mm. The edge section is arranged such that the front of the suction head rests on the floor and that the edge of the suction opening has a certain and constant clearance from the floor at the location of coarse dirt. In the case of this configuration of the invention, the edge section has a sliding function in addition to its supporting function, so that the floor covering can be vacuumed carefully when working with the suction head.

In a further variant of the suction nozzle according to the invention, the edge section is L-shaped in plan view, with one side extending along the narrow side of the suction head. This arrangement ensures a more stable guidance of the suction head on the floor covering in the case of the usual back and forth movement of the suction head during vacuuming. As an alternative, the L-shaped edge segment can also be part of the surrounding support and seal. In a particular version of the suction head, preferably a ring of bristles with stiff bristles, or a ring made of a piece of foam material, or made on the floor side with a slide covered, for example, with non-woven material, felt or plush The rings are mounted on supports for telescoping the underside supports and seals. The ring is interrupted in said front region, wherein a flexible unsupported front section is arranged in the front gap of the ring. In this case, and with respect to certain aspects related to the production of the tip, an integral bristle ring is an advantageous structure. According to the invention, the ring of bristles in this case has soft bristles and/or the inserted bristles are more widely spaced in the front region and denser in the remaining area of the ring of bristles, which can be adapted to act on the suction head. on the force.

Description of drawings

In the following, the invention is explained with reference to the accompanying drawings, which represent only one exemplary embodiment. In the attached picture:

Fig. 1 is a three-dimensional schematic diagram of the suction head 1, the support and sealing member 7 protrudes to remove coarse and fine dirt on the smooth floor,

Figure 2 is a schematic view of the underside of a suction head 1 in which the edge section 10, 10' of the front support and seal 7 consists of two L-shaped dimensionally stable bristle parts with stiff bristles; The front section 11 between the edge sections in the area of the front F is made as a flexible rubber lip,

FIG. 3 is a schematic view of the underside of the suction head 1 , the bristle ring 13 has hard bristles in the rear area and narrow side S of the suction head 1 , and soft bristles in the front F area.

Detailed ways

Figure 1 shows a suction nozzle that can be fitted to a cylinder vacuum cleaner with a suction tube and a suction hose. Its basic structure includes: a suction head 1 that is substantially rectangular in plan view; a bottom side sliding base 2 with a suction slot 4; The suction channel is rotatably attached to the suction head; and the extended support and seal 7 for vacuuming the smooth floor on the underside of the suction nozzle by means of a switch operable on the suction head 1 8 and by means of a support movably arranged in the suction head, the support and the seal can be actuated.

Utilize this support and sealing member 7 that protrudes on the floor side, for example constituted by bristle strips, a satisfactory gap can be formed between the bottom side suction edge 3 and the floor surface, preferably a gap of 5-10 mm, so that even coarse dirt Particles can also be removed from floors with this nozzle. In this case, the support and seal arranged parallel to the tip front F in the region of the tip front F consists of two dimensionally stable edge sections 10, 10' and preferably a flexible non-supporting front section 11, The edge sections 10, 10' are used for floor-side support of the suction head, and they are arranged on the outer surfaces on both sides of the suction head, while the front section 11 is arranged between the edge sections 10, 10'. As shown in FIG. 1 , the front section 11 consists of a flexible plastic lip. The front edge segments 10, 10' are made into bristle pieces, the bristle pieces are made of hard bristles and are very dense, with a width of preferably 10-30mm.

Figure 2 shows the underside of the tip 1, wherein the support and seal 10, 10' is L-shaped, one side of which extends along the short side S of the tip 1. In the case of L-shaped edge segments 10, 10', they are dense strips of bristles. The bristles of these edge sections are preferably made of a hard material so that the nozzle is supported by the protruding bristle strips when vacuuming smooth floors. In this improved variant of the nozzle according to the invention, both the rear seal 12 and the front section 11 between the two edge sections 10, 10' consist of plastic lips, but they differ in bending stiffness and perform different functions. The front section 11 , preferably having a width of 150-220 mm, is made of soft plastic and is arranged in such a way that when the suction head moves forward, coarse dirt particles are rolled over and thus enter the area below the suction head. The back seal 12 is made harder, and when the suction head moves forward, the back seal 12 will take away the coarse dirt that has entered under the suction head but has not been sucked away.

In the configuration shown in Fig. 3, the support and seal are formed by rings of bristles 13 extending along the side edges S and the rear of the sliding base. In the region of the front part F, the ring of bristles 13 is an unsupported soft bristle in the part forming the front section 11 . The soft bristles forming the front section 11 are made narrower, for example, and the spacing between the individual bristles or bristle bundles 14 in the front section 11 can also be selected to be greater than in the remaining region of the bristle ring 13 . The bristles forming the front section 11 are always chosen such that coarse dirt particles can get under the sliding base during the forward movement of the suction head and be sucked off thereafter.

Claims (9)

1, the suction nozzle of cylindrical vacuum dust collector comprises:

The suction nozzle (1) that vertical view is rectangular substantially;

Sliding bottom (2), it has at least one is the bottom side suction seam (4) on boundary with suction inlet edge (3);

Suction attachment (5), it movably is contained on this suction nozzle (1) or the suction channel (6) around rotation, and this suction channel rotatably is connected on this suction nozzle (1); And

Telescopic support and seal (7) are used for dust suction is carried out on the smooth floor on this suction nozzle bottom side,

Wherein, described support and seal are fixed on the support member that can vertically move in this suction nozzle (1), can activate this support member by going up the switch member (8) of operating at suction nozzle (1), it is characterized in that, be arranged in described support in the zone, suction nozzle front portion (F) and seal edge section (10 abreast with suction nozzle front portion (F) by two dimensionally stables, 10 ') and the leading portion of at least one flexible non-support (11) constitute, edge section is used for suction nozzle (1) is carried out that floor side supports and arranges at the outer surface of suction nozzle both sides, and leading portion (11) is arranged in edge section (10,10 ') between.

2, the suction nozzle of cylindrical vacuum dust collector according to claim 1, it is characterized in that, when described support member descends and the support of stretching out and seal (7) when being resisted against on the floor surface, the gap on liftoff plate surface, described suction inlet edge (3) is preferably 5～10mm greater than 3mm.

3, the suction nozzle of cylindrical vacuum dust collector according to claim 1 and 2 is characterized in that, this leading portion (11) is made of the mane strip with soft mane.

4, the suction nozzle of cylindrical vacuum dust collector according to claim 1 and 2 is characterized in that, this leading portion (11) is made the flexiplast lip.

According to the suction nozzle of the described cylindrical vacuum dust collector of arbitrary claim in the claim 1～4, it is characterized in that 5, the width of this leading portion (11) is 150～220mm.

According to the suction nozzle of the described cylindrical vacuum dust collector of arbitrary claim in the claim 1～5, it is characterized in that 6, described edge section (10,10 ') is made of the mane spare with hard mane, foam pieces or sliding part with soft fabric supporting surface.

7, the suction nozzle of cylindrical vacuum dust collector according to claim 6 is characterized in that, the width of described bearing edge section (10,10 ') in described front portion reaches 50mm.

According to the suction nozzle of claim 6 or 7 described cylindrical vacuum dust collectors, it is characterized in that 8, it is L-shaped that described bearing edge section (10,10 ') is configured to vertical view, and a side is extended along the narrow limit (S) of suction nozzle (1).

9, according to the suction nozzle of the described cylindrical vacuum dust collector of arbitrary claim in the claim 1～6, it is characterized in that, the ring of being made by mane, foam pieces or sliding part (13) is contained on the described support member, and this ring is interrupted in zone, described front portion (F); And the leading portion (11) of the non-support of described flexibility is arranged in the forward gap of this ring (13).

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