DE102008039804A1 - washing brush - Google Patents

Abstract

The invention relates to a washing brush for cleaning an object, with a housing (12), the pressurized cleaning liquid can be supplied and from the underside of cleaning bristles (25) protrude and receives a dispenser (37) for the cleaning liquid. In order to develop the washing brush in such a way that an improved cleaning effect can be achieved without the risk of damaging the object to be cleaned by the washing brush, it is proposed according to the invention that the dispensing device (37) has at least one rotor arm (42, 43) which is freely rotatably mounted about a rotation axis (39) and carries a nozzle (44, 45) which, when exposed to pressurized cleaning liquid, rotates about the axis of rotation (39) together with the rotor arm (42, 43) and through the cleaning liquid one of the cleaning bristles (25) formed support ring (28) passes therethrough to the object to be cleaned, wherein the washing brush (10) by means of the support ring (28) is supported on the object to be cleaned and the support ring (28) of a plurality of in radial Direction and in the circumferential direction staggered cleaning bristles (25) is formed.

Description

The The invention relates to a washing brush for cleaning a Article, in particular a motor vehicle, with a housing, be supplied to the pressurized cleaning fluid is and stand out from the bottom cleaning bristles and that a discharge device for the cleaning liquid receives.

By means of such washing brushes, a cleaning liquid, preferably water, to which a chemical may be added to increase the cleaning effect, can be applied to an object to be cleaned, and at the same time the object can be cleaned mechanically by means of the cleaning bristles. The washing brushes are used as accessories for high-pressure cleaning devices, with the aid of which the cleaning fluid can be pressurized. The pressurized cleaning liquid is supplied to the washing brush via a pressure line. The pressure line can be connected to a connecting element of the washing brush. From the connection element, the pressurized cleaning liquid can flow to the dispensing device, from which the cleaning liquid is dispensed in the direction of the object. Such washing brushes are from the DE 20 2007 014 420 U1 known. They are used in particular for cleaning motor vehicles, which often have very complex shaped and sensitive surfaces.

task The present invention is a washing brush of The aforementioned type such that an improved Cleaning effect can be achieved without the risk that the object to be cleaned is damaged by the washing brush becomes.

These Task is in a washing brush of the generic Art solved according to the invention that the dispenser comprises at least one rotor arm which um a rotation axis is freely rotatably mounted and a nozzle bears when pressurized Cleaning fluid together with the rotor arm around the Rotary axis rotates and the cleaning fluid through a support ring formed by the cleaning bristles on the object to be cleaned, the washing brush supported by the support ring on the object to be cleaned is and the support ring of a variety of in radial Direction and offset in the circumferential direction to each other Cleaning bristles is formed.

In the invention flows into the thought that a very good cleaning effect can be achieved if the object to be cleaned immediately with pressurized cleaning fluid can be acted upon by at least one rotating about an axis of rotation Nozzle is discharged, and the object in addition also mechanically cleaned with cleaning bristles. The Cleaning bristles not only have a cleaning function but also a support function. They are forming the underside of the housing a support ring for supporting the washing brush on the to be cleaned Object. From the at least one rotating nozzle can the pressurized cleaning fluid through the Support ring are directed through the object. The support ring thus forms on the one hand a splash protection, on the other hand it allows a mechanical cleaning and defines a support surface for supporting the washing brush. To avoid damage to the object, points the support ring a considerable width. These are the washing bristles not only in the circumferential direction but in addition also offset in the radial direction to each other. The staggered Arrangement gives the support ring a width that is larger is the width of a single row of cleaning bristles, which are arranged only in the circumferential direction one behind the other.

Of the relatively wide support ring reduces the risk that the cleaning bristles in complex shaped Surface of the object to be cleaned and uneven Apply force to the washing brush on one side Bend the area and thus the housing directly with the object to be cleaned, and possibly this scratched. The relatively wide Support ring is also characterized by a considerable mechanical Stability out.

Prefers the support ring comprises at least two rows of cleaning bristles. The support ring thus has at least one outer Bristle ring and an inner bristle ring on. The two bristle rings can be along an edge of the case extend. The of the at least one rotatable about the axis of rotation Nozzle dispensed cleaning fluid can through the bristle rings are directed through to the object to be cleaned.

In an advantageous embodiment, the cleaning bristles not only form a support ring but in addition also arranged on the underside of the housing central support member, with the help of the washing brush particularly reliable supported on the object to be cleaned and this can be mechanically cleaned, the support member surrounded by the support ring is and between the support member and the support ring a bristle-free annular space is arranged for the passage of the cleaning liquid. The central support member thus forms as well as the support ring, a support member for Ab Support the washing brush on the object. Extending between the central support member and the support ring is a bristle-free annular space through which the cleaning liquid discharged from the at least one rotating nozzle can be directed under pressure onto the object.

The Housing in a preferred embodiment to the invention a top part, which receives the dispenser, and a lower part with a plurality of openings, on the the cleaning bristles are held and that the dispenser supported. The dispenser is thus from the lower part supported by the housing and the upper part of the housing covered.

Prefers at least one projection is arranged on the upper side of the lower part, where the dispenser rests. The projection can, for example be configured in the form of a pin or a rib.

conveniently, the upper part comprises a surrounding the lower part in the circumferential direction Bumper edge, made of a rubber-elastic material is, in particular of a rubber or elastomeric material. By such a configuration, the risk of damage of the article through the housing of the washing brush kept very low. The user presses the washing brush with such a strong force against the object that even the relatively wide support ring, which is formed by the cleaning bristles that do not absorb force can and therefore the cleaning bristles bend outward, there is nevertheless no risk of damage to the object, because then only the rubber-elastic shock edge of the housing touched the object. Because the bumper is elastic is formed, the danger is extremely low, that damaged by such a touch of the object, for example is scratched.

conveniently, is at least the impact edge of the upper part of the housing made of a thermoplastic elastomer, in particular from a styrene block copolymer. As a material for the bumper can For example, a styrene-ethylene-butadiene-styrene are used.

The Upper part of the housing comprises in an advantageous embodiment the invention of a hood made of a harder material is made as the bumper edge. For example, the Hood made of a polypropylene material. It can be provided be that formed on the free edge of the hood, the bumper is. In particular, it can be provided that the impact edge encompasses an edge region of the hood.

Especially It is favorable if the upper part of the housing produced in two-component injection molding. in this connection can be made in a first step, the hood and in a second method step, the free edge of the Hood be splashed the bumper edge.

Around also reach angled areas of an object to be cleaned To be able to, it is beneficial if the housing the washing brush in plan view substantially triangular is designed with convex outward arching Pages.

conveniently, two of the three corner areas of the housing are rounded, whereas a third corner area is a tip of the housing forms.

The following description of a preferred embodiment The invention is in connection with the drawing of the closer Explanation. Show it:

1 a side view of a washing brush according to the invention;

2 : a front view of the washing brush off 1 ;

3 a sectional view taken along the line 3-3 in 2 and

4 : An enlarged sectional view of detail A of 3 without cleaning bristles.

In the drawing is schematically a washing brush 10 represented, for example, as an accessory for a high-pressure cleaner for cleaning a motor vehicle used and can be connected to the pressure hose of the high-pressure cleaner.

The washing brush 10 has a housing 12 on with a shell 13 that a hood 14 training, and with a lower part 16 (please refer 3 ), which plate-shaped and the upper part 12 is encompassed. The lower part 16 is with the shell 12 bolted and includes a central area 17 , the spoke-like walkways 18 with an annular outside area 19 a piece is connected. Between the bridges 18 has the lower part 16 a variety of breakthroughs 20 on.

In the shell 13 opens one side of the hood 14 molded supply line 22 , which at its free end a connection element in the form of a coupling 23 carries, with whose help the washing brush 10 can be connected to the free end of the pressure hose of a high-pressure cleaner.

From the bottom of the case 12 stand a variety of cleaning bristles 25 from the bottom part 16 are held. In the ring-shaped outdoor area 19 of the lower part 16 make up the cleaning bristles 25 a support ring 28 out, from an outer bristle ring 29 and an inner bristle ring 30 is formed. The cleaning bristles 25 of the support ring 28 are thus offset in the circumferential direction and in the radial direction to each other. The width of the support ring 28 is defined by the double row bristle in the form of the outer bristle ring 29 and the inner bristle ring 30 ,

In the central area 17 form the underside of the lower part 16 fixed cleaning bristles 25 a central support part 33 that of the support ring 28 is surrounded, being between the central support part 33 and the support ring 28 a bristle-free annulus 35 is arranged. The latter is below the footbridges 18 and the breakthroughs 20 of the lower part 16 positioned.

The top 13 takes a dispenser 37 for pressurized cleaning fluid. This includes a perpendicular to the lower part 16 aligned hollow shaft 38 that over the supply line 22 pressurized cleaning fluid can be supplied and at the around the longitudinal axis 39 the hollow shaft 38 freely rotatable a rotor 40 is stored. The rotor 40 has two diametrically opposed rotor arms 42 and 43 on, at her from the hollow shaft 38 projecting free end one nozzle at a time 44 respectively. 45 wear. The rotor arms 42 . 43 are hollow, so that over the rotor arms 42 . 43 the nozzles 44 and 45 can be acted upon with pressurized cleaning fluid. The nozzles 44 . 45 create one downwards, ie through the breakthroughs 20 of the lower part 16 and the bristle-free annulus 35 directed through jet of cleaning liquid, the exit from the nozzles 44 . 45 by reaction forces a torque on the rotor arms 42 . 43 exercise and this around the longitudinal axis 39 set in rotation. Thus, by means of the two nozzles 44 and 45 two rotating liquid jets are generated, which can be directed to an object to be cleaned. At the same time, the article can by means of the lower side of the lower part 16 protruding cleaning bristles 25 be mechanically cleaned. The support ring 28 and the central support part 33 allow this, on the washing brush 10 To exert a considerable force, because by means of the support ring 28 and the central support part 33 can the washing brush 10 be reliably supported on the object to be cleaned.

How out 4 becomes clear, wearing the hood 14 at her the lower part 16 circumferentially surrounding free edge a bumper edge 48 of a rubber-elastic material, for example of a rubber or elastomeric material. In particular, a thermoplastic elastomer can be used, for example a styrene block copolymer. This can be attached to the free edge of the hood 14 be formed, preferably in two-component injection molding. The hood 14 can be made for example of a polypropylene material.

By providing the rubber-elastic shock edge 48 the risk of damage to the object to be cleaned, such as a motor vehicle, kept particularly low, because even if the cleaning bristles 25 with a strong asymmetrical application of force to the washing brush 10 kink in a side area and thereby the housing 12 comes into contact with the object to be cleaned, there is virtually no risk of damage to the object. In particular, there is virtually no risk that the article from the housing 12 is scratched.

The lower part 16 points in the central area 17 on the upper side a central projection 46 on. This forms a support for the dispenser 37 , the upper side of the projection 46 is applied.

The housing 12 is formed substantially triangular in plan view. It includes in a rear section, the supply line 22 adjacent, two rounded corner areas 55 whereas a front end of the housing 12 , the supply line 22 turned away, a pointed corner area 57 Are defined. The corner areas 55 . 56 and 57 are convex on the outside arched sides 51 . 52 . 53 connected with each other. Such a design of the housing 12 has the advantage that even angled areas of an object reliably supplied with liquid and mechanically by means of cleaning bristles 25 can be cleaned.

By means of the washing brush 10 Thus, a very effective cleaning even of sensitive, complex shaped surfaces of an object, in particular a motor vehicle, can be achieved without the risk that surfaces through the washing brush 10 to be damaged.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 202007014420 U1 [0002]

Claims (11)

Washing brush for cleaning an object, in particular a motor vehicle, having a housing ( 12 ), is supplied to the pressurized cleaning liquid and from the underside cleaning bristles ( 25 ) and that a dispenser ( 37 ) for the cleaning liquid, characterized in that the dispensing device ( 37 ) at least one rotor arm ( 42 . 43 ), which around a rotation axis ( 39 ) is freely rotatably mounted and a nozzle ( 44 . 45 ), which upon application of pressurized cleaning liquid together with the rotor arm ( 42 . 43 ) about the axis of rotation ( 39 ) and the cleaning liquid through one of the cleaning bristles ( 25 ) formed support ring ( 28 ) on the object to be cleaned, the washing brush ( 10 ) by means of the support ring ( 28 ) is supported on the object to be cleaned and the support ring ( 28 ) of a plurality of radial and circumferentially offset from each other cleaning bristles ( 25 ) is formed. Washing brush according to claim 1, characterized in that the supporting ring ( 28 ) at least two rows ( 29 . 30 ) of cleaning bristles ( 25 ). Washing brush according to claim 1 or 2, characterized in that the cleaning bristles ( 25 ) at the bottom of the housing ( 12 ) arranged central support part ( 33 ) form for supporting the washing brush ( 10 ) on the object to be cleaned, wherein the support part ( 33 ) from the support ring ( 28 ) is surrounded and between the support part ( 33 ) and the support ring ( 28 ) a bristle-free annulus ( 35 ) is arranged to pass through the cleaning liquid. Washing brush according to one of the preceding claims, characterized in that the housing ( 12 ) a top ( 13 ) having the dispenser ( 37 ), and a lower part ( 16 ) with a plurality of openings ( 20 ), on which the cleaning bristles ( 25 ) and that the dispenser ( 37 ) is supported. Washing brush according to claim 4, characterized in that at the top of the lower part ( 16 ) at least one projection ( 46 ) at which the dispenser ( 37 ) is present. Washing brush according to claim 4 or 5, characterized in that the upper part ( 13 ) one the lower part ( 16 ) surrounding peripheral edge ( 48 ), which is made of a rubber-elastic material. Washing brush according to claim 6, characterized in that the impact edge ( 48 ) is made of a thermoplastic elastomer. Washing brush according to claim 6 or 7, characterized in that the upper part ( 13 ) a hood ( 14 ), which is made of a harder material than the impact edge ( 48 ). Washing brush according to one of claims 6 to 8, characterized in that the upper part ( 13 ) is produced in a two-component injection molding process. Washing brush according to one of the preceding claims, characterized in that the housing ( 12 ) in the plan view is substantially triangular in shape with convexly outwardly curved sides ( 51 . 52 . 53 ). Washing brush according to claim 10, characterized in that the housing ( 12 ) two rounded corner areas ( 55 . 56 ) and a pointed corner area ( 57 ).