DE102020134441A1 - Brush tool for joint cleaning and joint milling machine - Google Patents

Abstract

There is provided a grout cleaning brush tool comprising a plurality of filaments (60), a first retainer disc (56) having a first body (64) and a second retainer disc (58) having a second body (66), the first Holding disk (56) and the second holding disk (58) are connected to one another and form a holding disk composite (62), and wherein the filaments (60) are fixed to the holding disk composite (62), wherein on the first base body (64) and/or a plurality of ribs (126) are seated on the second base body (66), such that the filaments (60) are arranged with a partial region (144) between the first base body (64) and the second base body (66), and wherein a filament array (138) positioned between a first rib (132) and an adjacent second rib (134) abutting the first rib (132) and the second rib (134), the filament array (138) including at least one filament (60) includes.

Description

The invention relates to a brush tool for cleaning joints, comprising a plurality of filaments, a first holding disk with a first base body and a second holding disk with a second base body, the first holding disk and the second holding disk being connected to one another and forming a holding disk assembly. and wherein the filaments are fixed to the retainer disk assembly.

The invention also relates to a grooving machine, comprising a tool head with a tool coupling, and in particular to a weed grooving machine.

the DE 10 2017 121 154 A1 discloses a weed joint cutter, comprising at least one brush disk, which is mounted rotatably about an axis of rotation, a motor unit with a drive motor for the at least one brush disk and with a first center plane, which is oriented perpendicularly to the axis of rotation, a holding rod device, on which the motor unit is arranged and having a second median plane perpendicular to the axis of rotation, and a handle assembly disposed on the support rod means and having a third median plane perpendicular to the axis of rotation, the at least one brush disc being at the first median plane and/or the second median plane and/or or the third center plane or at most a distance of twice the thickness of the at least one brush disc in a direction parallel to the axis of rotation to the first center plane and/or the second center plane and/or the third center plane.

the U.S. 5,023,998 discloses a filament holder for a vegetation cutter.

the U.S. 5,768,867 discloses a tool for attachment to a vegetation cutting mechanism for cutting grass and the like.

the US 6,293,394 B1 discloses an electrically powered lawn edger having a wire disc.

From the WO 2004/051001 A1 a rotary device for removing weeds is known.

In the CN 205 337 340 U describes a portable weed removing device.

From the DE 196 27 715 A1 an electric grout cleaner is known.

In the WO 00/66858 A1 describes a machine for removing joint cement.

the DE 90 00 712.3 U1 reveals a weed tiller.

the DE 296 11 986 U1 discloses an electric grout cleaner.

The object of the invention is to provide a brush tool of the type mentioned at the outset, with which a good cleaning result can be achieved on joints, in particular when removing weeds, with a long service life, with a narrow structure being realized.

This object is achieved according to the invention with the brush tool mentioned at the outset in that a plurality of ribs are located on the first base body and/or on the second base body, that the filaments are arranged with a partial area between the first base body and the second base body, and in that a filament arrangement is positioned between a first rib and an adjacent second rib and abuts the first rib and the second rib, the filament arrangement comprising at least one filament.

The filaments form the brushes of the brush tool. Due to the positioning between the first base body and the second base body, a structure that is narrow in the axial direction can be implemented in a structurally simple manner. This results in good joint mobility.

Due to the narrow structure, relatively thick filaments (brushes) can be used. This results in a good cleaning result and a long service life.

A relatively large number of filaments can be positioned on the brush tool by virtue of the first rib and second rib assigned to a filament arrangement, with a plurality of ribs being seated on the first base body and/or the second base body. This in turn ensures a good cleaning result and a long service life when operating the brush tool.

In principle, it is possible for exactly one filament to be arranged between the first rib and the second rib. In an advantageous embodiment, a plurality of filaments are arranged between the first rib and the second rib. For example, a pair of filaments is arranged.

The first base body and the second base body are functional areas of the assembly of holding disks, between which the filament arrangements are seated and which, in particular, ensure that the filament arrangements are fixed axially. It is possible for the retaining disk assembly to be designed in one piece or in multiple pieces (for example two pieces). The first holding disk and the second holding disk or the first base body and the second base body are basically geometric areas on the holding disk assembly. In the case of a multi-part retaining disk assembly, the first base body and the second base body can also be realized on different components (and in particular form different components), which are subsequently connected to one another during the manufacture of the brush tool. Alternatively (in the case of a one-piece retaining disk assembly), it is also possible for the first base body and the second base body to be realized on the same component, which is produced, for example, in an injection molding process. Provision is then made in particular for the first base body and the second base body to be formed in one piece on the same component.

• - die Verbindung ist eine stoffschlüssige Verbindung;
• - die Verbindung ist eine formschlüssige Verbindung.

It is favorable if the filament arrangement between the first rib and the second rib is connected to the first rib and/or to the second rib and to at least one of the following:

• - the connection is an integral connection;
• - the connection is a positive connection.

This results in a "safe" holding of the filaments on the first holding disk and the second holding disk. The filaments are held on the assembly of holding disks with a first partial area. With a second section, they protrude beyond the retaining disc assembly and can be used to clean joints during operation. A material connection and/or form-fitting connection with the first rib and/or the second rib results in an optimized filament attachment to the retaining disk assembly. A long service life can be achieved. A material connection is, for example, an adhesive connection or a welded connection. In the case of a form-fitting connection, in particular at least one web, which is arranged on the first base body and/or the second base body, is immersed in the material of a filament.

In particular, the brush tool is designed as a rotatable tool with a center to which an axis of rotation (a shaft of a jointing machine) is assigned, with a machine coupling for coupling to a jointing machine being arranged at the center. In particular, the brush tool can then be easily (detachably) connected to the joint milling machine.

• - der erste Grundkörper und der zweite Grundkörper bilden eine Anlage in axialer Richtung für die Filamentanordnungen;
• - die Filamentanordnungen sind mit dem ersten Grundkörper und/oder mit dem zweiten Grundkörper stoffschlüssig verbunden;
• - die erste Rippe und die zweite Rippe bilden jeweils eine Anlage in Umfangsrichtung für die Filamentanordnung zwischen der ersten Rippe und der zweiten Rippe;
• - der erste Grundkörper und/oder der zweite Grundkörper weist einen Anlagering auf, welcher eine Anlagefläche in radialer Richtung zu dem Zentrum hin für die Filamentanordnungen bereitstellt;
• - die Filamentanordnungen sind in radialer Richtung mit einem Anlagering stoffschlüssig verbunden;
• - die Filamentanordnungen sind in radialer Richtung ausgerichtet;
• - die Rippen sind in radialer Richtung ausgerichtet.

An axial direction, a circumferential direction and a radial direction are advantageously assigned to the retaining disk assembly with at least one of the following:

• - The first base body and the second base body form an abutment in the axial direction for the filament arrangements;
• - The filament arrangements are integrally connected to the first base body and/or to the second base body;
• - the first rib and the second rib each form a circumferential abutment for the filament assembly between the first rib and the second rib;
• - The first base body and/or the second base body has a contact ring which provides a contact surface in the radial direction towards the center for the filament arrangements;
• - The filament arrangements are materially connected in the radial direction with a bearing ring;
• - the filament assemblies are aligned in the radial direction;
• - the ribs are aligned in the radial direction.

The design of the first base body and the second base body as axial abutments provides a structurally simple filament attachment. A cohesive connection (adhesive and/or via welding) to the first base body and/or the second base body can also be achieved in a simple manner. By designing the first rib and the second rib as abutments in the circumferential direction, a bristle attachment can be implemented in a simple manner, which enables a long service life. The corresponding brush tool can be made relatively thin, but relatively thick filaments can be used. This enables good joint mobility (also for narrow joints) with a good cleaning result and a long service life. If the first base body and/or the second base body has a contact ring, additional filaments or filament arrangements can be connected to the contact ring or at least supported by it. In particular, an integral connection is possible, for example by gluing or welding. When aligning the filament Arrangement in the radial direction, a relatively large number of filaments can be arranged on the brush tool. Relatively thick filaments can be used. With a narrow structure, this results in good joint mobility with good cleaning results and a long service life.

• - Rippen, welche an dem ersten Grundkörper sitzen, liegen an dem zweiten Grundkörper an;
• - Rippen, welche an dem zweiten Grundkörper sitzen, liegen an dem ersten Grundkörper an;
• - Rippen, welche an dem ersten Grundkörper sitzen, sind einstückig mit diesem gebildet;
• - Rippen, welche an dem zweiten Grundkörper sitzen, sind einstückig mit diesem gebildet;
• - Rippen, welche an dem zweiten Grundkörper anliegen, sind stoffschlüssig mit diesem verbunden;
• - Rippen, welche an dem ersten Grundkörper anliegen, sind stoffschlüssig mit diesem verbunden.

A structurally simple structure results if at least one of the following is provided:

• - Ribs, which sit on the first body, rest on the second body;
• - Ribs, which sit on the second body, are on the first body;
• - Ribs, which sit on the first body are formed integrally with this;
• - Ribs, which sit on the second body are formed integrally with this;
• - Ribs, which rest on the second body are materially connected to this;
• - Ribs, which rest on the first body are materially connected to this.

The corresponding brush tool can thus be manufactured from a small number of components. In principle it is sufficient if only the first base body, the second base body and the filaments are provided. For example, the filaments are firmly connected to a base body during the manufacture of the brush tool. The other base body is then connected to the first-mentioned base body as a type of cover, and the filaments are then located between the first base body and the second base body. In this way, a brush tool can be provided in a structurally simple manner and with ease of manufacture, which has a long service life in operation and ensures a good cleaning result.

• - die erste Anlagefläche und die zweite Anlagefläche sind parallel zueinander ausgerichtet;
• - die erste Anlagefläche und/oder die zweite Anlagefläche sind ebene Flächen;
• - an der ersten Anlagefläche und/oder der zweiten Anlagefläche sitzt mindestens ein Steg, welcher in die Filamentanordnung eingetaucht ist.

The first rib favorably has a first contact surface for the filament arrangement and/or the second rib has a second contact surface for the filament arrangement with at least one of the following:

• - The first contact surface and the second contact surface are aligned parallel to one another;
• - the first contact surface and/or the second contact surface are flat surfaces;
• - At least one web, which is immersed in the filament arrangement, sits on the first contact surface and/or the second contact surface.

In this way, a brush tool can be produced in a simple manner, which can be provided with a relatively large number of relatively thick filaments. This enables a good cleaning result with a long service life. The brush tool can be made narrow. A secure filament attachment to the retaining disk assembly can be achieved. The filaments can be easily formed (particularly with a uniform cross-section). If at least one web is also seated on the first contact surface and/or the second contact surface, which is immersed in the filament arrangement, an additional positive fit can be achieved, for example, in addition to a material connection with the first rib and/or the second rib. This also contributes to a long service life.

• - der Aufnahmeraum ist zu der ersten Rippe und zu der zweiten Rippe durch ebene Flächen begrenzt;
• - der Aufnahmeraum ist zu einem Zentrum des Bürsten-Werkzeugs hin durch eine Kreisbogenfläche begrenzt;
• - der Aufnahmeraum ist in einer radialen Richtung von einem Zentrum des Bürsten-Werkzeugs weg nach außen offen;
• - der Aufnahmeraum hat im Querschnitt die Form eines Ringsektors.

In an advantageous embodiment, there is a receiving space for the filament arrangement between the first base body, the second base body, the first rib and the second rib, with at least one of the following:

• - The receiving space is limited to the first rib and the second rib by flat surfaces;
• - The receiving space is bounded towards a center of the brush tool by a circular arc surface;
• - The receiving space is open in a radial direction away from a center of the brush tool to the outside;
• - The receiving space has the shape of a ring sector in cross section.

As a result, a brush tool can be produced in a simple manner. In particular, the number of basic components can be kept low. In one embodiment, only the first base body, the second base body and the filaments are required as basic components. The filaments can be attached to the assembly of holding disks in a simple and secure manner and are easy to manufacture. The brush tool can have a large number of relatively thick filaments. A good cleaning result with a long service life can thus be achieved during operation. Furthermore, there is good joint mobility.

• - der erste Grundkörper ist als Kreisscheibe ausgebildet;
• - der zweite Grundkörper ist als Kreisschreibe ausgebildet;
• - der erste Grundkörper und der zweite Grundkörper sind konzentrisch zueinander angeordnet;
• - der erste Grundkörper und der zweite Grundkörper weisen einen gleichmäßigen Abstand auf;
• - die Rippen sitzen ausschließlich an dem ersten Grundkörper.

It is also favorable if at least one of the following is provided:

• - The first body is designed as a circular disk;
• - The second body is designed as a circular disk;
• - The first body and the second body are arranged concentrically to each other;
• - The first body and the second body have a uniform distance;
• - The ribs sit exclusively on the first body.

This results in a structurally simple structure that is easy to manufacture.

• - an dem ersten Haltebereich ist eine erste Ausnehmung gebildet, in welcher die Filamentanordnungen positioniert sind;
• - an dem ersten Haltebereich sind die Rippen angeordnet;
• - die Rippen sind an dem ersten Haltebereich in der ersten Ausnehmung angeordnet;
• - die erste Ausnehmung ist in radialer Richtung durch ein Anlageelement begrenzt, an welchem die Filamentanordnungen stirnseitig anliegen;
• - das Anlageelement ist als Steg und insbesondere als Ringsteg ausgebildet;
• - das Anlageelement ist in eine zweite Ausnehmung an dem zweiten Grundkörper eingetaucht und liegt insbesondere an einem Boden der zweiten Ausnehmung an dem zweiten Grundkörper an;
• - das Anlageelement liegt an einem Rand an, welcher in radialer Richtung eine zweite Ausnehmung an dem zweiten Grundkörper begrenzt;
• - die erste Ausnehmung ist durch einen ebenen Boden begrenzt;
• - zwischen dem ersten Haltebereich und dem ersten Fixierungsbereich liegt ein erster Absatz, wobei insbesondere der erste Absatz an einer Seite angeordnet ist, welcher dem zweiten Grundkörper abgewandt ist.

It is favorable if the first base body has a first holding area for the filament arrangements and a first fixing area for a machine coupling, with at least one of the following:

• - a first recess is formed on the first holding area, in which the filament assemblies are positioned;
• - The ribs are arranged on the first holding area;
• - the ribs are arranged on the first holding portion in the first recess;
• - The first recess is delimited in the radial direction by a bearing element on which the filament arrangements rest at the front;
• - The contact element is designed as a web and in particular as an annular web;
• - The contact element is immersed in a second recess on the second base body and is in particular at a bottom of the second recess on the second base body;
• - The contact element rests against an edge which delimits a second recess on the second base body in the radial direction;
• - The first recess is delimited by a flat bottom;
• - Between the first holding area and the first fixing area there is a first paragraph, in particular the first paragraph being arranged on a side which faces away from the second base body.

The first recess in the first holding area allows a receiving space for the filament arrangements to be provided in a structurally simple manner. A connection can be implemented in a simple manner, for example by means of a material connection and/or by means of a positive connection. By arranging the ribs on the first holding area, a fixation can be achieved both in an axial direction and in a circumferential direction. If the ribs on the first holding area are arranged in the first recess, a simple structural design results.

If the first recess is delimited in the radial direction by a contact element against which the filament arrangements bear on the front side, a structurally simple structure results that is easy to manufacture. The contact element allows the filament arrangements to be fixed in a simple manner in the radial direction during the manufacture of the brush tool. Furthermore, a connection and in particular an integral connection with the contact element is possible. This results in high stability and a correspondingly long service life for the brush tool. If the contact element is designed as a web and in particular as a ring element and is immersed in a second recess on the second base body and preferably rests against a bottom of the second recess on the second base body, then the contact element can also be used as an alternative or in addition to the stable connection use between the first body and the second body. The area over which the first base body and the second base body are connected to one another, in particular in a materially bonded manner, is increased to a certain extent via the contact element. It is then particularly favorable if the contact element bears against an edge which delimits a second recess on the second base body in the radial direction. An additional connection can thus also be achieved in the radial direction between the first base body and the second base body via the contact element.

If the first recess is delimited by a flat base, a materially bonded connection with the filaments, for example, can be achieved in a simple manner. By providing a shoulder, which is arranged between the first holding area and the fixing area on the first base body, a machine coupling can be implemented in a simple manner and the brush tool can be made thin.

• - an dem zweiten Haltebereich ist eine zweite Ausnehmung gebildet, in welcher die Filamentanordnungen positioniert sind;
• - die zweite Ausnehmung ist gegenüberliegend zu Rippen an dem ersten Grundkörper;
• - die zweite Ausnehmung ist durch einen Rand in einer radialen Richtung begrenzt;
• - der Rand ist beabstandet zu einem Ende des Teilbereichs der Filamentanordnungen, mit welchem diese an dem Haltescheiben-Verbund gehalten sind;
• - zwischen dem Rand und den Filamentanordnungen ist ein Steg und insbesondere Ringsteg angeordnet, welcher an dem ersten Grundkörper sitzt;
• - die zweite Ausnehmung an dem zweiten Grundkörper weist einen ebenen Boden auf;
• - zwischen dem zweiten Haltebereich und dem zweiten Fixierungsbereich liegt ein zweiter Absatz, wobei insbesondere der zweite Absatz an einer Seite angeordnet ist, welcher dem ersten Grundkörper abgewandt ist.

For the same reasons, it is favorable if the second base body has a second holding area for the filament arrangements and a second fixing area for the machine coupling, with at least one of the following:

• - a second recess is formed on the second holding area, in which the filament assemblies are positioned;
• - the second recess is opposite to ribs on the first body;
• - the second recess is delimited by an edge in a radial direction;
• - The edge is spaced apart from one end of the portion of the filament assemblies, with which they are held on the holding disc composite;
• - Arranged between the edge and the filament arrangements is a web and in particular an annular web which is seated on the first base body;
• - The second recess on the second body has a flat bottom;
• - Between the second holding area and the second fixing area there is a second step, in particular the second step being arranged on a side which faces away from the first base body.

For example, the result is a structurally simple construction with simple manufacturability of the first base body and the second base body if a corresponding contact element, on which the filament arrangements bear at the end, delimits the second recess. In particular, the ribs are then arranged on the other base body. An additional connection between the first base body and the second base body can be achieved via the edge in relation to the radial direction. A connection and in particular a material connection between the first base body and the second base body can be produced in the axial direction and/or in the radial direction by the web and in particular the annular web of the first base body. This results in a high connection surface.

It is favorable if the composite retaining disk has a composite holding area, which is formed by the first holding area and the second holding area, and has a composite fixing area, which is formed by the first fixing area and the second fixing area. In particular, a machine coupling is arranged on the composite fixing area.

• - der Verbund-Haltebereich weist eine erste Dicke auf, welche an dem Verbund-Haltebereich einheitlich ist;
• - der Verbund-Fixierungsbereich weist eine zweite Dicke auf, welche am Verbund-Fixierungsbereich einheitlich ist;
• - die erste Dicke ist größer als die zweite Dicke;
• - der Verbund-Fixierungsbereich ist in einer axialen Richtung zu dem Verbund-Haltebereich zurückgesetzt.

Furthermore, it is favorable if at least one of the following is provided:

• - the composite holding area has a first thickness which is uniform at the composite holding area;
• - the composite attachment area has a second thickness which is uniform at the composite attachment area;
• - the first thickness is greater than the second thickness;
• - the composite fixation area is recessed in an axial direction to the composite holding area.

A correspondingly thin brush tool can thereby be provided. A sufficiently large receiving space for the filaments is provided for their attachment. A machine coupling can be implemented in a simple manner on the composite fixing area.

• - das Anlageelement ist ein Ringelement;
• - die Rippen sind in einer radialen Richtung beabstandet zu dem Anlageelement;
• - das Anlageelement ist in radialer Richtung beabstandet zu einer Maschinenkupplung;
• - das Anlageelement sitzt an dem zweiten Grundkörper und die Rippen sitzen an dem ersten Grundkörper.

It is favorable if the filament arrangements bear against a contact element on the face side, with at least one of the following:

• - the abutment element is a ring element;
• - the ribs are spaced in a radial direction from the abutment element;
• - The contact element is spaced in the radial direction to a machine clutch;
• - The contact element is seated on the second body and the ribs are seated on the first body.

This results in a brush tool that can be produced in a simple manner. The number of components for manufacturing a brush tool can be kept low. Secure attachment of the filament assemblies results. This in turn results in a long service life.

• - der mindestens eine Steg hat mindestens eine Anlagefläche, welche an der Filamentanordnung anliegt;
• - die Filamentanordnung ist stoffschlüssig und/oder formschlüssig mit dem mindestens einen Steg verbunden;
• - der mindestens eine Steg ist in die Filamentanordnung eingetaucht und insbesondere in Material der Filamentanordnung eingetaucht und/oder von Material der Filamentanordnung umgeben;
• - der mindestens eine Steg ist als Verdrängungselement für Material der Filamentanordnung ausgebildet.

In an advantageous embodiment, at least one web is assigned to a filament arrangement, with at least one of the following:

• - The at least one web has at least one contact surface which bears against the filament arrangement;
• - The filament arrangement is materially and/or positively connected to the at least one web;
• - the at least one web is immersed in the filament arrangement and in particular immersed in material of the filament arrangement and/or surrounded by material of the filament arrangement;
• - The at least one web is designed as a displacement element for material of the filament arrangement.

The provision of at least one web provides an additional fastening option for filament arrangements. A higher fastening stability can thereby be achieved. This in turn increases the service life of the brush tool. In addition to the first rib or the second rib and direct Contact surfaces on the first base body and/or the second base body can be made via the at least one web, in particular an additional material-to-material and/or form-fitting connection.

In an advantageous embodiment, at least one web is arranged and designed for connection to a plurality of filaments. A plurality of filaments and in particular a first filament and a second filament can be applied to a web in order to achieve additional attachment. This results in the brush tool being easy to manufacture with secure attachment.

Alternatively or additionally, it is possible for at least one web to be arranged and designed for connection to a single filament. For example, such at least one web is designed as a form-fitting element which dips into a filament.

In an advantageous embodiment, at least one web is positioned between the respective first rib and the second rib. In principle, this web can be used to create a form fit with a filament. Alternatively or additionally, it is also possible for the at least one web to bear against a first filament and a second filament, with the first filament bearing against the first rib and the second filament bearing against the second rib. As a result, an additional contact surface is provided in relation to a circumferential direction.

• - mindestens ein Steg sitzt mittig zwischen der ersten Rippe und der zweiten Rippe;
• - der mindestens eine Steg sitzt an dem gleichen Grundkörper, an welchem die erste Rippe und die zweite Rippe sitzen;
• - der mindestens eine Steg ist in einer radialen Richtung ausgerichtet;
• - der mindestens eine Steg ist quaderförmig;
• - mindestens ein Filament liegt mit einer Außenseite an dem mindestens einen Steg an;
• - ein erstes Filament der Filamentanordnung liegt an dem mindestens einen Steg an, wobei das erste Filament an der ersten Rippe anliegt, und ein zweites Filament der Filamentanordnung liegt an dem mindestens einen Steg an, wobei das zweite Filament an der zweiten Rippe anliegt.

It is favorable if at least one of the following is provided:

• - at least one web is located centrally between the first rib and the second rib;
• - The at least one web is seated on the same base body on which the first rib and the second rib are seated;
• - the at least one web is aligned in a radial direction;
• - The at least one web is cuboid;
• - At least one filament rests with an outer side on the at least one web;
• - a first filament of the filament assembly abuts the at least one web, the first filament abutting the first rib, and a second filament of the filament assembly abuts the at least one web, the second filament abutting the second rib.

The at least one web located centrally between the first rib and the second rib provides an additional contact surface in a circumferential direction, which in particular extends in a radial direction. If the at least one web is seated on the same base body on which the first rib and the second rib are seated, this results in simple manufacturability and in particular integral manufacturability. The radial alignment of the web provides a large contact surface. If the at least one web is cuboid, two filament arrangements can be applied to it on different sides. If the at least one filament bears against the at least one web with an outside, a corresponding connection is produced in a simple manner, which can also be materially bonded. In a constructively favorable embodiment, the web lies between a first filament and a second filament of the filament arrangement and is applied to both the first filament and the second filament and in particular is also firmly bonded to them. It can thus be achieved in a simple manner that the first filament and the second filament are supported outside of the assembly of holding disks and are fixed to the assembly of holding disks in a simple and secure manner.

It can additionally or alternatively be provided that at least one web has at least one penetration point in the material of a filament. It is thus possible to anchor the at least one web in a simple manner, as it were, in the corresponding filament during production, in order in particular to achieve a form-fitting connection.

• - der mindestens eine Steg ist in eine Filamentanordnung eingetaucht;
• - der mindestens eine Steg liegt näher zu der zugeordneten Rippe als zu einer benachbarten Rippe;
• - der mindestens eine Steg ist mit einem einzigen Filament verbunden;
• - der zugeordneten Rippe sind eine Mehrzahl von Stegen zugeordnet, wobei die Stege insbesondere beabstandet sind und insbesondere als Füße an der Rippe ausgebildet sind.

It is favorable if at least one web with at least one penetration point is arranged on or next to a rib, in particular with at least one of the following:

• - the at least one web is immersed in a filament arrangement;
• - the at least one web is closer to the associated rib than to an adjacent rib;
• - the at least one web is connected to a single filament;
• - The associated rib are associated with a plurality of webs, the webs are spaced in particular and are in particular formed as feet on the rib.

An additional positive connection can be achieved. This results in a simple and secure filament attachment. It's possible this in turn achieve a long service life for the brush tool. Furthermore, the brush tool is easy to manufacture.

Furthermore, it is favorable if the first rib and the second rib are arranged on one base body of the first base body and the second base body, and at least one web is arranged on the other base body. The other base body then forms a cover at least for the area around the first rib and the second rib. If at least one web is arranged on this cover, then an additional connection can be achieved between the filament arrangement and the assembly of holding disks. This in turn increases the service life.

In particular, it is favorable if at least one web of a first type is arranged between the first rib and the second rib, which rests on the outside of filaments, and at least one web of a second type is arranged on or next to a rib, which is immersed in a filament is. This results in simple manufacturability. The result is a high level of stability of the filament attachment to the retaining disk assembly. This in turn results in a long service life. In particular, components of the brush tool (and preferably the first base body as a separate component, the second base body as a separate component, or a component which includes the first base body and the second base body, and the filaments) are adhesive and/or welded by ultrasonic ( and thus cohesively) and/or connected in an injection molding process (and thus cohesively).

It is then particularly advantageous if at least one web of a third type is provided, which is arranged on a cover. A base body on which no ribs are arranged forms a kind of cover for the base body on which ribs are arranged. If at least one web is arranged on this cover, then an additional connection of a filament arrangement can be achieved. For example, the at least one web on the cover is designed as an immersion element, which then to a certain extent dips into the filament arrangement from above. For example, each filament of a filament arrangement is then assigned at least one web, which is correspondingly immersed into it from above.

In a favorable embodiment, a filament arrangement comprises a first filament and a second filament and in particular exactly one filament pair. This makes it possible for the first filament and the second filament to be supported on one another at least in an initial state (unused state) of the brushing tool. This results in high stability. This results in effective joint cleaning. Furthermore, a large number of filaments can be positioned on the holding disk assembly.

It is favorable here if the filaments of a filament arrangement lie next to one another in a circumferential direction and, in particular, are not stacked in an axial direction. A brush tool with a relatively small thickness (in the axial direction) can thus be formed. This results in high joint mobility. In particular, all the filaments (without a force load) are arranged in a plane which is perpendicular to an axis of rotation. During a machining process, only one filament acts in the axial direction on a machining area (several filaments can act in the circumferential direction).

It is particularly advantageous if, at least in an initial state, the filaments of a filament arrangement touch one another at least in a partial area and, in particular, touch one another loosely. The corresponding sub-area is in particular that sub-area with which the filaments of the filament arrangement protrude beyond the assembly of retaining disks. The filaments of a filament arrangement can thus be supported on one another. This results in an effective cleaning effect. In particular, the initial state is an unused state of the brushing tool. After a cleaning operation, it is fundamentally possible for the filaments to be permanently deformed in such a way that they no longer or no longer fully support one another in the corresponding filament arrangement.

It is favorable if filaments have a rectangular or square cross section and, in particular, filaments are arranged in a filament arrangement in such a way that flat surfaces of the filaments touch loosely at least in an initial state and at least in a partial area. In this way, filaments of a filament arrangement can be supported on one another over a large area. This results in an effective cleaning effect. In particular, the initial state is an unused state. The support can be at least partially removed after the brush tool has been operated.

• - es sind mindestens vierzig Filamente und insbesondere mindestens sechsundvierzig Filamente und insbesondere mindestens fünfzig Filamente und insbesondere mindestens sechsundfünfzig Filamente vorgesehen;
• - es sind mindestens zwanzig Filamentanordnungen und insbesondere mindestens dreiundzwanzig Filamentanordnungen und insbesondere mindestens fünfundzwanzig Filamentanordnungen und insbesondere mindestens achtundzwanzig Filamentanordnungen vorgesehen, wobei insbesondere eine Filamentanordnung ein Filament-Paar aufweist;
• - die Filamentanordnungen sind in einer Umfangsrichtung gleichmäßig verteilt angeordnet.

It is favorable if at least one of the following is provided:

• there are at least forty filaments and in particular at least forty-six filaments and in particular at least fifty filaments and in particular at least fifty-six filaments;
• there are at least twenty filament assemblies, and in particular at least twenty-three filament assemblies, and in particular at least twenty-five filament assemblies, and in particular at least twenty-eight filament assemblies, in particular one filament assembly having a filament pair;
• - The filament arrangements are distributed uniformly in a circumferential direction.

An appropriate number of filaments or filament arrangements results in a good cleaning result with a long service life. The result is a maximization of the number of filaments over the circumference.

It is particularly advantageous if a filament has a flexural strength of at least 9000 Nmm ² and in particular at least 10,000 Nmm ² and in particular at least 13,000 Nmm ² . This results in an effective cleaning result with a long service life. Furthermore, it is easy for an operator to operate.

Furthermore, it is favorable if the length of a filament with which it protrudes beyond the assembly of retaining disks is at least 3 cm and in particular at least 4 cm. In this way, a good cleaning result can be achieved with ease of use.

Furthermore, a good cleaning result can be achieved if the length of a filament with which it protrudes beyond the assembly of holding disks is at most 7 cm and in particular at most 6 cm. This also results in simple operability. An operator can easily align the brush tool to a joint to be cleaned.

It is favorable if a filament has a thickness in the range between 2 mm and 4 mm and in particular has a thickness in the range between 2.5 mm and 3.5 mm. This results in a high cleaning efficiency with a narrow structure.

It is also favorable if the filaments are made from a plastic material. On the one hand, effective joint cleaning can be achieved. On the other hand, the risk of damage to material between which joints are formed (such as paving stones or the like) is kept low.

It is possible that the first retaining disk or the first base body and the second retaining disk or the second base body are separate components or are realized on separate components which are subsequently connected to one another, or that the first retaining disk or the first base body and the second retaining disk or the second base body are realized on a single component. For example, in one embodiment, the first body and the second body are manufactured separately and then joined together in the manufacture of the brush tool with the filament assemblies positioned between the first body and the second body. In an alternative embodiment, a (single-piece) retaining disk composite is produced, which is in particular a component and includes the first base body and the second base body as areas of a single component. In particular, this retaining disk composite is then in one piece with the first base body and the second base body, and in particular in one piece. It is made, for example, as an injection molded part. During production, for example, filament arrangements are then appropriately overmoulded in order to fix them with the retaining disk composite with the first base body and the second base body.

According to the invention, a joint milling machine of the type mentioned at the outset is provided, on which a brush tool according to the invention is arranged and, in particular, is detachably arranged.

The corresponding joint milling machine, which is used in particular to remove weeds between joints, has the advantages already explained in connection with the brush tool according to the invention.

It is advantageous if the tool head is arranged on a holding rod device and the holding rod device is designed in such a way that a joint milling process can be carried out by a standing operator. This results in easy operability.

In particular, the brush tool according to the invention is used to remove weeds in joints or the joint milling machine according to the invention is used to remove weeds in joints, particularly outdoors.

• 1 eine perspektivische Darstellung eines Ausführungsbeispiels einer (Unkraut-)Fugenfräsmaschine;
• 2 eine vergrößerte Darstellung eines Teilbereichs der Fugenfräsmaschine gemäß 1 mit einem Werkzeugkopf, an welchem ein Ausführungsbeispiel eines Bürsten-Werkzeugs gehalten ist;
• 3 eine Draufsicht auf das Bürsten-Werkzeug gemäß 2;
• 4 eine Seitenansicht des Bürsten-Werkzeugs in der Richtung A gemäß 3;
• 5 das Bürsten-Werkzeug gemäß 3 in der gleichen Ansicht, wobei ein Deckel (zweite Haltescheibe) entfernt wurde;
• 6 eine perspektivische Darstellung des Bürsten-Werkzeugs gemäß 5 mit entferntem Deckel;
• 7 die gleiche Ansicht wie 6, wobei nicht sichtbare Linien eingezeichnet sind;
• 8 eine vergrößerte Darstellung des Bereiches B gemäß 6;
• 9 eine vergrößerte Darstellung des Bereiches C gemäß 7;
• 10 eine Schnittansicht des Bürsten-Werkzeugs gemäß 3 längs der Linie 10-10;
• 11 eine vergrößerte Darstellung des Bereiches D gemäß 10; und
• 12 eine Schnittansicht längs der Linie 12-12 gemäß 3.

The following description of preferred embodiments serves to explain the invention in more detail in conjunction with the drawings. Show it:

• 1 a perspective view of an embodiment of a (weed) joint milling machine;
• 2 an enlarged view of a portion of the joint milling machine according to FIG 1 with a tool head on which an embodiment of a brush tool is held;
• 3 a plan view of the brush tool according to FIG 2 ;
• 4 a side view of the brush tool in the direction A according to FIG 3 ;
• 5 the brush tool according to 3 in the same view with a cover (second retaining disc) removed;
• 6 a perspective view of the brush tool according to FIG 5 with the lid removed;
• 7 the same view as 6 , where non-visible lines are drawn;
• 8th an enlarged representation of the area B according to FIG 6 ;
• 9 an enlarged representation of the area C according to FIG 7 ;
• 10 a sectional view of the brush tool according to FIG 3 along line 10-10;
• 11 an enlarged representation of the area D according to FIG 10 ; and
• 12 12 is a sectional view taken along line 12-12 of FIG 3 .

An embodiment of a joint milling machine according to the invention, which 1 and in 2 (In a partial view) and designated 10, is used in particular for removing weeds in joints between paving stones or the like.

The grooving machine 10 includes a tool head 12. The tool head 12 is seated on a holding rod device 14. The holding rod device 14 is used for holding and guiding the grooving machine 10 by a standing operator.

In one embodiment, a length of support rod assembly 14 is lockably adjustable between tool head 12 and a proximal end (relative to an operator).

For example, the support rod assembly 14 includes a first rod 16 and a second rod 18 . A coupling 20 is provided, which is arranged on the second rod 18, for example. The first rod 16 is telescopically guided in the second rod 18 . The relative position of the first rod 16 to the second rod 18 can be fixed with the coupling 20 .

A handle unit 22 is seated on the holding rod device 14 and in particular on the second rod 18. The handle unit 22 comprises a loop handle 24. In one exemplary embodiment, a switch 26 for switching the joint milling machine 10 on and off is also arranged on the handle unit 22.

It can be provided that a mains cable 28 for electrical power supply is routed via the handle unit 22 .

It is also possible for the jointing machine 10 to be battery operated. A corresponding battery unit is arranged, for example, on the handle unit 22, the holding rod device 14, or on the tool head 12. The battery pack may be fixed or detachable.

In one exemplary embodiment, the loop handle 24 is designed to be aligned with a central plane 30 of the tool head 12 . The center plane 30 also forms a center plane of the bow handle 24.

This makes it easier for an operator to align the tool head 12 with a joint to be cleaned.

The loop handle 24 is designed in such a way that it can be gripped with an operator's hand in order to hold and guide the jointing machine 10 .

A further handle unit 32 is also located on the holding rod device 14 at a distance from the handle unit 22. The handle unit 32 is designed in such a way that an operator can hold the jointing machine 10 from an upper side with the other hand compared to the holding hand on the loop handle 24. For this purpose, the handle unit 32 has a handle 34 which is oriented transversely to the center plane 30 .

The operator's hand is oriented substantially parallel to the center plane 30 for holding on the handle unit 22 . The other hand of the operator, which grips the handle unit 32 , is aligned transversely to the center plane 30 .

The tool head 12 comprises a housing 36. A motor and in particular an electric motor is arranged in the housing 36. (In principle, it is also possible for the joint milling machine 10 to include an internal combustion engine, for example.)

The housing 36 includes a web 38.

A tool shaft 40 is arranged on the web 38 . A tool coupling 42 is seated on the tool shaft 40. A brush tool 44 can be detachably connected to the tool shaft 40 via this tool coupling 42. The tool shaft 40 has an axis of rotation 46. A brush tool 44 fixed by the tool shaft 40 via the tool coupling 42 rotates about the axis of rotation 46 when the joint milling machine 10 is in operation.

The axis of rotation 46 is oriented perpendicular to the center plane 30 .

The tool shaft 40 is at a distance from the housing 36. A torque transmission device is guided in the web 38 in order to transmit the torque of the corresponding motor to the tool shaft 40.

The housing 36 has a cutout 48 which is delimited on one side by the web 38 and is delimited by a wall 50 of the housing 36 . The wall 50 is a front wall which is oriented transversely and, for example, perpendicularly to the center plane 30 .

The brush tool 44 is positioned in the cutout 48 .

A protective hood 52 is associated with the brushing tool 44 and covers the brushing tool 44 in a non-operative partial area.

The brush tool 44 sits at least approximately on the center plane 30.

On the guard 52 is placed a mark 54 such as an arrow which is on the same plane as the brushing tool 44, and specifically on the same plane as filaments (brushes) of the brushing tool 44.

The marking 54 lies in particular on the center plane 30.

The marking 54 shows the effective range of the brush tool 44 for a standing operator, so that it is easier for him to “find” joints for cleaning them.

In one exemplary embodiment, the protective hood 52 is fixed to the web 38 .

An embodiment of a corresponding jointing machine is in DE 10 2017 121 154 A1 disclosed, to which reference is made expressly and in full.

An embodiment of a brush tool 44 according to the invention, which in the 3 until 12 shown comprises a first support disk 56, a second support disk 58, and a plurality of filaments 60.

In one embodiment, the brushing tool 44 is made solely of these three basic components (i) first support disc 56, (ii) second support disc 58, (iii) filaments 60.

The first holding disk 56 and the second holding disk 58 form a holding disk assembly 62.

The first retaining disk 56 and the second retaining disk 58 are basically areas of the retaining disk assembly 62.

In the embodiment shown, the first retainer disc 56, the second retainer disc 58 and the filaments 60 are separate components which are joined together during manufacture of the brush tool.

In an alternative embodiment it is provided that the first holding disk 56 and the second holding disk 58 together form a component which is then in one piece and in particular is also in one piece. The retaining disk assembly 62 is then in one piece.

An exemplary embodiment is described below in which the first holding disk 56 and the second holding disk 58 are separate components which are then connected to one another during manufacture.

The first retaining disk 56 comprises a first base body 64. The second retaining disk 58 comprises a second base body 66. The second base body forms a cover for the first base body 64.

The first retaining disk 56 with the first base body 64 and the second retaining disk 58 with its second base body 66 are concentric with one another. An axial direction 68 , which is oriented transversely to the base bodies 64 , 66 , is assigned to the retaining disk assembly 62 . The axial direction 68 is parallel or coincident with the axis of rotation 46 when the brush tool 44 is mounted on the gouging machine 10 .

The first body 64 and the second body 66 are circular; they are designed as circular disks.

A radial direction 70 transverse to the axial direction 68, and a circumferential direction 72 transverse to the axial direction and transverse to the radial direction 70 (cf 3 ). The axial direction 68, the radial direction 70 and the circumferential direction 72 are corresponding basis vector directions in a cylindrical coordinate system.

The brush tool 44 has a center 74 . A machine coupling 76 is seated at the center 74. The brush tool 44 can be connected to the joint milling machine 10 at its tool coupling 42 via the machine coupling 76. A non-rotatable connection is provided so that the correspondingly fixed brush tool 44 rotates with the tool shaft 40 .

To form the center 74 , the first base body 64 has a first center 78 and the second base body 66 has a second center 80 .

At the first center 78 and the second center 80, the first body 64 and the second body 66 each have an opening 82 therethrough, with the corresponding openings 82 being aligned. The tool shaft 40 can be immersed through this for non-rotatable fixing.

The gouging machine 10 includes a securing element 84 ( 2 ), via which a brush tool 44 placed on the tool coupling 42 via the machine coupling 76 can be secured in the axial direction 68 . It can be provided that the securing element 84 also ensures a non-rotatable securing, or the tool coupling 42 is designed accordingly in combination with the machine coupling 76 in order to ensure non-rotatable fixing.

The brush tool 44 has a holding portion 86 and a fixing portion 88 (see, for example, 10 ) on. The filaments 60 are held at the holding area 86 . The machine coupling 76 is seated on the fixing area 88 and the openings 82 are arranged. Relative to the radial direction 70, the holding area 86 is arranged on the outside and the fixing area 88 on the inside. The holding area 86 surrounds the fixing area 88 in an annular manner.

The holding area 86 comprises a first holding area 86a on the first base body 64, and a second holding area 86b on the second base body 66. The fixing area 88 comprises a first fixing area 88a on the first base body 64 and a second fixing area 88b on the second base body 66.

The first base body 64 includes a first recess 90 (cf 11 ), which is located on the first holding portion 86a. The first recess 90 is delimited by a first floor 92. The first floor 92 is in particular flat. The first recess 90 is delimited by an annular web 94 in a radial direction towards the first center 78 .

The annular ridge 94 is circular and forms an annular surface as the edge delimitation of the first recess 90 . It also forms an abutment ring as described in more detail below.

The first recess 90 is open in the radial direction away from the first center 78 and is open toward the second body 66 .

The second base body 66 has a second recess 96 in the holding area 86 . This second recess 96 is delimited in the axial direction 68 by a second floor 98 . This second base 98 is in particular flat.

The second recess 96 is delimited by an edge 100 in the radial direction 70 towards the second center 80 .

The second recess 96 is open in the radial direction 70 away from the second center 80 and is open in the axial direction 68 towards the first main body 64 .

The first recess 90 and the second recess 96 each have the shape of a (hollow) ring.

The first base body 64 and the second base body 66 are adapted to one another in such a way that the annular web 94 of the first base body 64 lies in the second recess 96 and in particular bears against the second base 98 on the front side (relative to the axial direction 68). Furthermore, the annular web 94 rests with a first side 102 on the edge 100 of the second recess 96 of the second base body 66 .

Furthermore, the first base body 64 and the second base body 66 rest against one another at the fixing region 88 via corresponding flat surfaces 104 (of the first base body 64), 106 (of the second base body 66).

In an advantageous embodiment, a connection to the contact surfaces is provided. The connection is in particular integral. The materially bonded connection is produced, for example, by an adhesive material, or by welding, for example by ultrasonic welding. In an alternative embodiment, the corresponding connection is made by overmolding in an injection molding process.

In order to provide an immersion area for the second recess 96 , the annular web 94 is designed in such a way that it protrudes beyond the flat surface 104 of the first base body 64 . A corresponding height, with which the annular ridge 94 projects beyond the surface 104 in the axial direction 68, essentially corresponds to a depth in the axial direction 68 of the second recess 96 in relation to the surface 106.

The first recess 90 and the second recess 96 form a receiving space 108 on the retaining disk assembly 62 in the retaining region 86 between the first base body 64 and the second base body 66 . The filaments 60 are positioned in this.

The retaining disk composite 62 has a first thickness 110 (in the axial direction 68) at the retaining region 86 . It has a second thickness 112 at the fixing area 88 (outside the machine coupling 76) ( 11 ).

The first thickness 110 is greater than the second thickness 112.

A first step 114 is formed on the first base body 64 at the transition from the holding area 86 to the fixing area 88 (from the first holding area 86a to the first fixing area 88a). A second step 116 is correspondingly formed on the second base body 66 (at the transition from the second holding area 86b to the second fixing area 88b).

The transition from the first thickness 110 to the second thickness 112 on the retaining disk assembly 62, in particular abruptly, occurs at the first shoulder 114 and the second shoulder 116.

The first step 114 and the second step 116 have the same radial distance from the center 74 .

A contact side 118 of the edge 100, on which the first side 102 of the annular ridge 94 rests, is spaced in the radial direction 70 from the second shoulder 116. The distance is in 11 indicated with the reference number 120 .

The first side 102 of the annular ridge 94 is spaced from the first step 114, the corresponding spacing corresponding to the spacing 120 in the radial direction.

The filaments 60 are in frontal contact with a second side 103 of the annular web 94 opposite the first side 102 .

As a result, a region 122 is formed on the retaining disk composite 62 at the transition from the retaining region 86 to the fixing region 88, which has the greater first thickness 110 and has an extension (corresponding to the distance 120) in the radial direction 70.

This increases the stability of the retaining disk assembly 62, despite the presence of the first shoulder 114 and the second shoulder 116.

The flat surfaces 104, 106 lie on a center plane 124 which is perpendicular to the axial direction 68. The holding disk assembly 62 is at least approximately mirror-symmetrical to the center plane 124 with respect to its external shape.

The fixing area 88 is set back with respect to the holding area 86 with mirror symmetry to the center plane 124 .

A plurality of ribs 126 are seated on the first base body 64. Adjacent ribs are spaced apart from one another in the circumferential direction 72. The ribs 126 are distributed uniformly in the circumferential direction 72 .

The ribs 126 are arranged on the first base body 64 in the first recess 90 . They are spaced apart in the radial direction 70 from the annular web 94.

In the exemplary embodiment shown, all of the ribs 126 are arranged on the first base body 64, on which the annular web 94 is also seated.

In particular, the first base body 64 is formed in one piece with the annular web 94 and the ribs 126 .

This embodiment results in simple manufacturability with regard to the positioning of the filaments 60, as will be explained in more detail below.

In principle, it is also possible for the ribs to be located only on the second base body 66 or for some of the ribs to be located on the first base body 64 and some of the ribs to be located on the second base body 66 .

In particular, it is provided that the ribs 126 have such a height in the axial direction 68 that they bear against the second base body 66 and bear against the second floor 98 of the second recess 96 of the second base body 66 . In particular, there is a material connection between the ribs 126 and the second base body 66 is provided. This integral connection is, for example, an adhesive connection or a welded connection, such as an ultra-welded connection.

The ribs 126 are aligned in the radial direction in relation to a center plane 127 .

Each rib 126 comprises a first contact surface 128 and an opposite second contact surface 130 on the side the one that is applied to the second contact surface 130 .

The wedge-shaped rib 126 is designed such that the first contact surface 128 of a first rib 132 and the facing second contact surface 130 of an adjacent second rib 134 are at least approximately parallel.

As a result, filaments, which can be produced in a simple manner and in particular have a square or rectangular cross section, can be positioned and fixed in a simple manner between the first rib 132 and the corresponding second rib 134 .

A receiving space 136 for a filament arrangement 138 is formed between an adjacent first rib 132 and an adjacent second rib 134 . This receiving space 136 is limited in the circumferential direction by the first rib 132 and the second rib 134 and by the corresponding first contact surface 128 of one rib and by the corresponding second contact surface 130 of the other rib.

The corresponding receiving space 136 is delimited in the axial direction by the first base 92 of the first base body 64 and by the second base 98 of the second base body 66 . The corresponding receiving space 136 is delimited by the annular web 94 in the radial direction towards the center 74 .

The accommodation space 108 is divided into a plurality of separate accommodation spaces 136 by the ribs 126 . The receiving spaces 136 are open at the edges to the outside, ie away from the center 74 in the radial direction 70 .

The corresponding filament arrangement 138 is positioned in the respective receiving spaces 136 . The filament assembly 138 may consist of one filament 60, or may consist of a plurality of filaments.

In the embodiment shown, the filament assemblies 138 consist of a first filament 140 and a second filament 142, that is, a filament pair.

The filament arrangement 138 is positioned on the receiving space 136 and rests on the front side with one end on the annular web 94 and is connected to it, in particular with a material bond.

In the circumferential direction, the filament arrangement 138 bears against the first rib 132 and the second rib 134 and is connected to them in particular in a materially bonded manner.

In the axial direction, the filament arrangement 138 is in contact with the first base 92 and the second base 98 and is in particular firmly bonded to them.

It is provided that filaments 60 are not stacked in the axial direction 68 (cf 6 ), that is, there is only one row of filament arrangements 138 in the axial direction 68, the filament arrangements 138 being distributed in the circumferential direction 72 and sitting on the retaining disk assembly 62.

The first base body 64 and the second base body 66 are advantageously made of a plastic material such as PA6. The filaments 60 are preferably made of a plastic material such as PA612. This prevents surface scratching with effective joint cleaning.

It is provided that the filaments 60 have a flexural rigidity of at least 9000 Nmm ² and advantageously at least 10,000 Nmm ² and in particular at least 13,000 Nmm ² .

In one embodiment, the filaments 60 are square or rectangular in cross-section. As a result, they have an at least approximately cuboid shape.

The filaments 60 or the filament arrangements 138 have a first partial area 144 by means of which they are seated on the retaining disk assembly 62 and are seated between adjacent ribs 126 . They also have a second partial area 146, by means of which they protrude beyond the assembly of holding disks.

Ends 148 of the filaments 60 are formed on the second portion 146 . In particular, these ends 148 act during a cleaning process on joints. Ends 148 represent machining ends.

In particular, it is provided that the length of the second partial area 146 in the radial direction is at least 3 cm and in particular at least 4 cm.

Provision is also made for the length of this second partial area 148 to be at most 7 cm and in particular at most 6 cm.

In a specific embodiment, the length of the second portion 146 is approximately 4.75 cm.

In a specific embodiment, the total length of a filament 60 (as the combined length of the first portion 144 and the second portion 146) is approximately 6 cm.

A diameter of the retaining disk assembly 62 in the radial direction 70 is approximately 8.5 cm in a specific exemplary embodiment.

In an advantageous embodiment, as mentioned above, a filament 60 has a square or rectangular cross-section.

In particular, a corresponding side length is then in the range between 2 mm and 4 mm and in particular in the range between 2.5 mm and 3.5 mm.

In a specific embodiment, a filament 60 has a square cross-section with a side length of 3 mm.

In a filament arrangement 130, the respective first filament 140 and the second filament 142 are fixed to the holding disk assembly 62 via the first partial area 144. In this case, the fixation comprises a material connection, for example adhesive or as a welded connection (which is produced, for example, by ultrasonic welding).

As will be mentioned in more detail below, an integral connection can additionally or alternatively be provided.

In the second portion 146, the first filament 140 and the second filament 142 lie loosely against one another with planar surfaces 150 facing each other. There is a touch without a "permanent" connection. The first filament 140 and the second filament 142 of a filament arrangement 138 are supported on one another via the surfaces 150 . In the first partial area 144, the filament arrangement 138 is supported on the ribs 126 in the circumferential direction. The corresponding system is additionally secured via a material connection (and as will be explained below, also via a form-fitting connection).

In the second partial area 156, filaments 140, 142 of a filament arrangement 138 are loosely supported.

This support relates in particular to an initial state of the brush tool 44. After a cleaning operation, filaments 60 can also be permanently deformed, so that filaments 140, 142 of a filament arrangement 138 are no longer supported on one another or are only supported on one another in partial areas.

A web 152 is disposed between each adjacent rib 126 (between the first rib 132 and the second rib 134). This web 152 is located centrally between the first rib 132 and the second rib 134, particularly when a filament arrangement 138 comprises a filament pair. The web 152 is spaced apart from the annular web 94.

When a filament assembly 138 includes more than two filaments, multiple lands are positioned between the first rib 132 and the second rib 134 accordingly. Specifically, if a filament assembly includes n ribs, then there are (n-1) lands 152 between the ribs 132,134.

A web 152 is immersed in a filament assembly 138 and lies between the first filament 140 and the second filament 142 of the corresponding filament assembly 138.

In particular, it is provided that the corresponding webs 152 are arranged on the same base body on which the rib 126 is also seated. In the embodiment shown, the webs 152 are seated on the first base body 64. A web 152 forms a contact surface between adjacent ribs 132, 134 both for the first filament 140 and for the second filament 142. This allows an additional contact element to be inserted in the circumferential direction of the first rib 132 and the second rib 134 provide.

In particular, the filaments 140, 142 of the filament arrangement 138 are also connected to the same web 152 on which they are in contact (for example adhesively or via a welded connection).

The webs 152 are webs of a first type 152. In particular, they provide an additional contact surface. In principle, it is also possible for the webs 152 to be designed in such a way that they Displace material of the filaments 60 accordingly or are immersed in them.

Webs 154 of a second type are also assigned to the ribs 126 (cf 9 ).

The webs 152 of the first type serve in particular to fix two adjacent filaments 140, 142.

The webs 154 of the second type serve in particular to additionally fix a filament in the area of a rib 126.

The webs 124 are formed in such a way that they are immersed in a filament 60 and thereby ensure a form-fitting connection.

In particular, a form-fitting connection is ensured in relation to the circumferential direction 72 and in relation to the radial direction 70 .

In one exemplary embodiment, two webs 154 of the second type are arranged on a rib at a distance from a respective receiving space 136 . To a certain extent, these form feet on the respective rib 126.

Since a single rib 126 delimits two receiving spaces 136, four such webs 154 of the second type are then arranged.

It is also possible for such webs 154 of the second type to be seated on the corresponding first floor 92 .

In the manufacture of the brush tool, the first base body 64 with the ribs 26 and the annular web 94 is used as a kind of substrate. There are also ridges 152 of the first type.

Filaments 140, 142 are inserted. In doing so, they are pressed onto the webs of the second type 154 . The webs of the second type 154 can thereby immerse themselves in the material of the filaments 60, or the immersion or a subsequent complete immersion takes place in a heating process or welding process with heating of the material of the filaments 60.

During this process, the filaments 60 are inserted between the respective web 152 and the adjacent rib 126, with adjacent filaments being supported on one another via their surfaces 150.

Provision can be made here for the webs 154 of the second type to have penetrating tips in order to facilitate immersion in the material of the filaments 60 .

There are also webs 156 of a third type (cf 11 ). These webs 156 of the third type are arranged on the second base body 66 as a cover. When this second base body 66 is placed on the first base body 64, with appropriate positioning, the webs 156, which are in particular provided with penetration tips 158, can dip into the material of the filaments 60 (or dip when heated). This ensures an additional positive connection (in particular in the circumferential direction 72 and the radial direction 70).

It is provided that at least forty filaments 60 and in particular at least forty-six filaments 60 and in particular at least fifty filaments 60 and in particular at least fifty-six filaments 60 are arranged on the retaining disk assembly. This results in a high number of brushes and effective joint cleaning with a long service life can be achieved.

In the exemplary embodiment shown, it is provided in particular that at least twenty filament arrangements 138 and in particular at least twenty-three filament arrangements 138 and in particular at least twenty-five filament arrangements 138 and preferably at least twenty-eight filament arrangements 138 are present. In particular, each filament assembly 138 includes a filament pair including a first filament 140 and a second filament 142 .

According to the invention, a brush tool 44 is provided with which, when used with the joint milling machine 10, joints can be cleaned in an effective manner and in particular weeds can be removed from joints. In particular, the brush tool 44 is used outdoors.

The brush tool 44 can be implemented with a relatively small thickness in the axial direction 68 . This thickness is in particular less than 12 mm and preferably less than 11 mm and in particular less than 10 mm.

This results in a high degree of joint mobility and narrow joints can also be cleaned and, in particular, freed of weeds.

Filaments 60 of relatively large thickness (e.g. 3 mm thick) can be used. This results in an effective cleaning effect with a long service life.

Furthermore, a relatively high number of filaments 60 (such as fifty-six filaments 60) can be arranged on the brush tool 44. This in turn contributes effectively to a good cleaning result with a long service life.

A brush tool 44 is provided which can be manufactured in a simple manner. The filaments 60 are held securely on the retaining disk assembly 62 in a simple and effective manner in terms of production technology. This results in a long service life with simple manufacturability.

A brush tool 44 according to the present invention can be manufactured from a relatively small number of basic components. As mentioned above, only three basic components are required, namely the first basic body 64 and the second basic body 66 as well as the filaments 60.

In one embodiment, for example, the first body 64 is provided with the ribs 126 and the webs 152 . The corresponding filaments 60 are inserted between the adjacent ribs 132 , 134 on this first base body 64 . The second base body 66 is then put on as a cover.

An integral connection is produced, in particular by ultrasonic welding. (Alternatively or additionally, an adhesive connection can also be used.)

In the circumferential directions, the ribs 126 and the webs 152 of the first type provide contact surfaces for filaments 60, with which a material connection is also possible. In the axial direction, the first floor 92 and the second floor 98 provide contact surfaces with which a material connection is also provided.

In the radial direction toward the center 74, the annular ridge 94 provides a contact surface, with it also being provided in particular that the filament arrangements 138 are materially connected to the annular ridge 94 at corresponding ends (which face away from the ends 148).

The webs 154 of the second type, which are immersed in filaments 60, ensure an additional positive connection in the area of the ribs 126.

The webs 156 of the third type ensure an additional positive connection in the area of the second base body 66 as a cover.

With simple manufacturability, due to the "multiple attachment" of the filaments 60 with the retaining disk assembly 62, there is a long service life.

The brush tool 44 is easy to manufacture.

As mentioned, the basic structure is produced, and a connection between the first base body 64 and the second base body 66 and between the filaments 60 and the base bodies 64, 66 can be produced “globally” to a certain extent by ultrasonic welding.

Alternatively or additionally, an integral connection can be provided by gluing. It is also possible, for example, for a corresponding connection to be made in an injection molding process, in particular by overmolding.

As mentioned, an additional form-fitting connection can be produced via the webs 154 of the second type and via the webs 156 of the third type by immersing corresponding filaments into the material.

In the exemplary embodiment shown, the first holding disk 56 and the second holding disk 58 or the first base body 64 and the second base body 66 are separately manufactured components which are then connected to one another during the manufacture of the brush tool 44 (in which case the filaments 60 are then also connected will).

Alternatively, it is possible for the retaining disk assembly to be a one-piece and in particular one-piece component which includes the first retaining disk 56 and the second retaining disk 58 or the first base body 64 and the second base body 66 as a region. Such a holding disk assembly, which holds the filaments 60, is produced, for example, in an injection molding process and is in particular produced in one piece.

Reference List

10

grooving machine

12

tool head

14

support rod device

16

First Staff

18

Second Staff

20

coupling

22

handle unit

24

bow handle

26

Switch

28

power cord

30

midplane

32

handle unit

34

Handle

36

Housing

38

web

40

tool shaft

42

tool coupling

44

brush tool

46

axis of rotation

48

cutout

50

wall

52

protective hood

54

mark

56

First holding disc

58

Second retaining disc

60

filaments

62

Retaining disk composite

64

First body

66

Second body

68

axial direction

70

radial direction

72

circumferential direction

74

center

76

machine clutch

78

First center

80

second center

82

opening

84

fuse element

86

holding area

86a

First holding area

86b

Second holding area

88

fixation area

88a

First fixation area

88b

Second fixation area

90

First recess

92

First floor

94

ring bar

96

Second recess

98

second floor

100

edge

102

First page

103

Second page

104

level surface

106

level surface

108

recording room

110

First thickness

112

Second thickness

114

First paragraph

116

second paragraph

118

attachment side

120

Distance

122

area

124

midplane

126

rib

128

First investment area

130

Second plant area

132

First rib

134

Second rib

136

recording room

138

filament arrangement

140

First filament

142

Second filament

144

First section

146

Second section

148

End

150

Surface

152

Jetty (First Type)

154

Bridge (Second Type)

156

Bridge (Third Type)

158

penetration tip

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102017121154 A1 [0003, 0099]
• US5023998 [0004]
• US5768867 [0005]
• US 6293394 B1 [0006]
• WO 2004/051001 A1 [0007]
• CN 205337340 U [0008]
• DE 19627715 A1 [0009]
• WO 0066858 A1 [0010]
• DE 9000712 U1 [0011]
• DE 29611986 U1 [0012]

Claims (38)

A grout cleaning brush tool comprising a plurality of filaments (60), a first retainer disc (56) having a first body (64) and a second retainer disc (58) having a second body (66), the first retainer disc (56) and the second holding disk (58) are connected to one another and form a holding disk assembly (62), and wherein the filaments (60) are fixed to the holding disk assembly (62), characterized in that on the first base body (64) and /or a plurality of ribs (12; 132, 134) sit on the second base body (66), so that the filaments (60) are arranged with a partial region (144) between the first base body (64) and the second base body (66). , and a filament array (138) positioned between a first rib (132) and an adjacent second rib (134) abutting the first rib (132) and the second rib (134), the filament array (138) at least one filament (60). brush tool after claim 1 , characterized in that the filament arrangement (138) between the first rib (132) and the second rib (134) is connected to the first rib (132) and/or to the second rib (134) and with at least one of the following: - the connection is an integral connection; - the connection is a positive connection. brush tool after claim 1 or 2 , characterized by being designed as a rotatable tool with a center (74) to which a rotation axis (46) is assigned, a machine coupling (76) for coupling to a joint milling machine (10) being arranged at the center (74). Brush tool according to one of the preceding claims, characterized in that an axial direction (68), a circumferential direction (72) and a radial direction (70) are assigned to the retaining disk assembly (62) with at least one of the following: - the first Base body (64) and the second base body (66) form an abutment in the axial direction (68) for the filament arrangements (138); - The filament arrangements (138) are integrally connected to the first base body (64) and/or to the second base body (66); - the first rib (132) and the second rib (134) each provide a circumferential abutment (72) for the filament array (138) between the first rib (132) and the second rib (134); - The first base body (64) and/or the second base body (66) has a contact ring (94) which provides a contact surface in the radial direction (70) towards the center (74) for the filament arrangements (138); - The filament arrangements (138) are materially connected in the radial direction (70) with a bearing ring (94); - The filament assemblies (138) are aligned in the radial direction (70); - The ribs (126; 132, 134) are aligned in the radial direction (70). Brush tool according to one of the preceding claims, characterized by at least one of the following: - ribs (126; 132, 134) which are seated on the first base body (64) bear against the second base body (66); - Ribs, which sit on the second body (66), are located on the first body (64); - ribs (126; 132, 134) which sit on the first body (64) are integrally formed therewith; - ribs, which sit on the second body (66), are integrally formed therewith; - Ribs (126; 132, 134), which rest on the second base body (66), are materially connected to this; - Ribs which rest on the first base body (64) are materially connected to it. Brush tool according to one of the preceding claims, characterized in that the first rib (132) has a first contact surface (128) for the filament arrangement (138) and/or the second rib (134) has a second contact surface (130) for the filament arrangement (138) having at least one of the following: - the first abutment surface (128) and the second abutment surface (130) are aligned parallel to one another; - The first bearing surface (128) and/or the second bearing surface (130) are flat surfaces; - At least one web (154), which is immersed in the filament arrangement (138), sits on the first contact surface (128) and/or the second contact surface (130). Brush tool according to one of the preceding claims, characterized in that a receiving space (136) for the filament arrangement ( 138), with at least one of the following: - the receiving space (136) is delimited to the first rib (132) and to the second rib (134) by planar surfaces (128, 130); - the receiving space (136) is towards a center (74) of the brush tool through a circle arc surface limited; - The receiving space (136) is open in a radial direction (70) away from a center (74) of the brushing tool to the outside; - The receiving space (136) has the shape of a ring sector in cross section. Brush tool according to one of the preceding claims, characterized by at least one of the following: - the first base body (64) is designed as a circular disk; - The second body (66) is designed as a circular disk; - The first base body (64) and the second base body (66) are arranged concentrically to one another; - The first base body (64) and the second base body (66) have a uniform spacing; - The ribs (126; 132, 134) sit exclusively on the first body. Brush tool according to one of the preceding claims, characterized in that the first base body (64) has a first holding area (86a) for the filament arrangements (138) and a first fixing area (88a) for a machine coupling (76), with at least one of the Following: - on the first holding area (86a) a first recess (90) is formed, in which the filament assemblies (138) are positioned; - The ribs (126; 132, 134) are arranged on the first holding area (86a); - the ribs (126; 132, 134) are arranged on the first holding area (86a) in the first recess (90); - The first recess (90) is delimited in the radial direction (70) by a contact element (94) on which the filament arrangements (138) bear at the front; - The contact element is designed as a web and in particular as an annular web (94); - The contact element (94) is immersed in a second recess (96) on the second base body (66) and rests in particular on a bottom (98) of the second recess (96) on the second base body (66); - The contact element (94) rests against an edge (100) which delimits a second recess (96) on the second base body (66) in the radial direction (70); - The first recess (90) is delimited by a flat bottom (92); - Between the first holding area (86a) and the first fixing area (88a) there is a first step (114), in particular the first step (114) being arranged on a side which faces away from the second base body (66). brush tool after claim 9 , characterized in that the second base body (66) has a second holding area (86b) for the filament arrangements (138) and a second fixing area (88b) for the machine coupling (76), with at least one of the following: - on the second holding area ( 86b) a second recess (96) is formed in which the filament assemblies (138) are positioned; - the second recess (96) is opposite to ribs (126; 132, 134) on the first body (64); - The second recess (96) is delimited by an edge (100) in a radial direction (70); - the edge (70) is circular; - The edge (70) is spaced from one end of the portion (144) of the filament assemblies (138) with which they are held on the retaining disc assembly (62); - Arranged between the edge (100) and the filament arrangements (138) is a web (94) and in particular an annular web which is seated on the first base body (64); - The second recess (96) on the second base body (66) has a flat bottom (98); - Between the second holding area (86b) and the second fixing area (88b) there is a second step (116), the second step (116) in particular being arranged on a side which faces away from the first base body (64). brush tool after claim 10 , characterized in that the holding disc composite (62) has a composite holding area (86) which is formed by the first holding area (86a) and the second holding area (86b), and a composite fixing area (88) which is formed by the first fixing area (88a) and the second fixing area (88b). brush tool after claim 11 characterized by at least one of the following: - the composite retention area (86) has a first thickness (110) which is uniform at the composite retention area (86); - the composite attachment area (88) has a second thickness (112) which is uniform at the composite attachment area (88); - the first thickness (110) is greater than the second thickness (112); - the composite fixation area (88) is set back in an axial direction (68) to the composite holding area (86). Brush tool according to one of the preceding claims, characterized in that the filament arrangements (138) end face an abutment element (94), with at least one of the following: - the abutment element (94) is a ring element; - the ribs (126; 132, 134) are spaced in a radial direction to the abutment element (94); - The contact element (94) is in the radial direction (70) spaced from a machine clutch (76); - The contact element (94) is seated on the second base body (66) and the ribs (126; 132, 134) are seated on the first base body (64). Brush tool according to one of the preceding claims, characterized in that at least one web (152; 154; 156) is assigned to a filament arrangement (138), with at least one of the following: - the at least one web (152) has at least one contact surface, which abuts the filament assembly (138); - The filament arrangement (138) is materially and/or positively connected to the at least one web (152); - the at least one web (154; 156) is immersed in the filament arrangement (138) and in particular immersed in material of the filament arrangement (138) and/or surrounded by material of the filament arrangement (138); - The at least one web (154; 156) is designed as a displacement element for material of the filament arrangement (138). brush tool after Claim 14 , characterized in that at least one web (152) is arranged and configured for connection to a plurality of filaments (60). brush tool after Claim 14 , characterized in that at least one web (154; 156) is arranged and configured for connection to a single filament (60). Brush tool after one of the Claims 14 until 16 , characterized in that at least one web (152) is positioned between the respective first rib (132) and the second rib (134). brush tool after Claim 17 characterized by at least one of the following: - at least one web (152) is centrally located between the first rib (132) and the second rib (134); - The at least one web (152) is seated on the same base body (64) on which the first rib (132) and the second rib (134) are seated; - The at least one web (152) is aligned in a radial direction (70); - The at least one web (152) is cuboid; - At least one filament (60) rests with an outside on the at least one web (152); - a first filament (140) of the filament arrangement (138) rests against the at least one web (152), the first filament (140) resting against the first rib (132), and a second filament (142) of the filament arrangement (138 ) abuts the at least one ridge (152), with the second filament (142) abutting the second rib (134). Brush tool after one of the Claims 14 until 18 , characterized in that at least one web (154; 156) has at least one penetration point (158) in the material of a filament (60). Brush tool after one of the Claims 14 until 19 , characterized in that at least one web (154) with at least one penetration tip (158) is arranged on or next to a rib (126; 132, 134), in particular with at least one of the following: - the at least one web (154) is in an array of filaments (138) immersed; - the at least one web (154) is closer to the associated rib (126; 132, 134) than to an adjacent rib; - the at least one web (154) is connected to a single filament (60); - The associated rib (126; 132, 134) are associated with a plurality of webs (154), wherein the webs (154) are spaced in particular and in particular as feet on the rib (126; 132, 134) are formed. Brush tool after one of the Claims 14 until 20 , characterized in that the first rib (132) and the second rib (134) are arranged on one body (64) of the first body (64) and the second body (66), and at least one web (156) on the another base body (66) is arranged. Brushing tool according to one of the preceding claims, characterized in that at least one ridge (152) of a first type is arranged between the first rib (132) and the second rib (134) which abuts outer sides of filaments (60), and in that at least one web (154) of a second type is arranged on or adjacent to a rib (126; 132, 134) which is immersed in a filament (60). brush tool after Claim 22 , characterized in that at least one web (156) of a third type is provided, which is arranged on a cover (66). Brush tool according to one of the preceding claims, characterized in that components (64, 66, 60) of the brush tool are adhesively and/or ultrasonically welded and/or connected in an injection molding process. Brush tool according to one of the preceding claims, characterized in that a filament arrangement (138) comprises a first filament (140) and a second filament (142) and in particular comprises precisely one filament pair. Brush tool according to one of the preceding claims, characterized in that the filaments (60) of a filament arrangement (138) lie next to one another in a circumferential direction (72) and in particular are not stacked in an axial direction (68). Brush tool according to one of the preceding claims, characterized in that at least in an initial state the filaments (60) of a filament arrangement (138) touch each other at least in a partial area (146) and in particular touch loosely. Brush tool according to one of the preceding claims, characterized in that filaments (60) are rectangular or square in cross section and in particular filaments (60) are arranged in a filament arrangement (138) such that at least in an initial state and at least in a partial area (146) loosely touch flat surfaces (150) of the filaments (60). Brush tool according to one of the preceding claims, characterized by at least one of the following: - at least forty filaments (60) and in particular at least forty-six filaments (60) and in particular at least fifty filaments (60) and in particular at least fifty-six filaments (60) are provided ; - there are at least twenty filament arrangements (138) and in particular at least twenty-three filament arrangements (138) and in particular at least twenty-five filament arrangements (138) and in particular at least twenty-eight filament arrangements (138), in particular one filament arrangement (138) having a filament pair; - The filament arrangements (138) are distributed uniformly in a circumferential direction (72). Brush tool according to one of the preceding claims, characterized in that a filament (60) has a bending stiffness of at least 9000 Nmm ² and in particular at least 10,000 Nmm ² and in particular at least 13,000 Nmm ² . Brush tool according to one of the preceding claims, characterized in that the length of a filament (60) with which it protrudes beyond the holding disk assembly (62) is at least 3 cm and in particular at least 4 cm. Brush tool according to one of the preceding claims, characterized in that the length of a filament (60) with which it protrudes beyond the holding disk assembly (62) is at most 7 cm and in particular at most 6 cm. Brush tool according to one of the preceding claims, characterized in that the filaments (60) have a thickness in the range between 2 mm and 4 mm and in particular in the range between 2.5 mm and 3.5 mm. A brush tool according to any one of the preceding claims, characterized in that the filaments (60) are made of a plastics material. Brush tool according to one of the preceding claims, characterized in that the first base body (64) and the second base body (66) are separate components which are subsequently connected to one another, or that the first base body (64) and the second base body (66 ) are realized on a single component. Joint milling machine, comprising a tool head (12) with a tool coupling (42) on which a brush tool (44) according to one of the preceding claims is arranged in a particularly detachable manner. joint milling machine Claim 36 , characterized in that the tool head (12) is arranged on a holding rod device (14) and the holding rod device (14) is designed in such a way that a joint milling process can be carried out by a standing operator. Use of the brush tool (44) according to any one of Claims 1 until 35 or the joint milling machine (10) according to Claim 36 or 37 for weed removal in joints.

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