Cleaning device

Abstract

Cleaning device with a cylindrical shaft having a first and a second end, the second end being provided with a cleaning head, characterized in that the cleaning head (3) has a set of beaters (4), the sets of beaters (4) being rotatably arranged at one of their ends on opposite sides of the cleaning head (3), the axis of rotation of each set (4) of beaters being formed by a rod (6) parallel to the longitudinal axis of the shaft (1) of the device, the rods (6) being radially offset symmetrically to the longitudinal axis of the shaft (1) and being supported at one end in the second end (2) of the shaft (1), the opposite ends of the rods (6) being supported in a stop plate (7).

Description

[0001] The subject of the utility model is a cleaning device for the surface treatment of materials, in particular metals, which can be mounted and used in the chuck of a drill or a similar tool with a head piece for receiving working tools equipped with a bearing shaft.

[0002] From the patent literature and practice, cleaning devices are known which generally have the form of a rotating brush mounted on a shaft and are mounted in the jaws of power tool holders, preferably drills, and are used to remove layers of paint or corrosion from the surface of materials, in particular metal surfaces.

[0003] Patent application CN109909855 discloses a multifunctional wire brush that is rotatable and can be mounted in a drill chuck. The disclosed brush has a coaxial disc at the end of the shaft, in which bristles—in the form of wire sections—are embedded in tufts.

[0004] Patent application CN104839997, on the other hand, discloses a rotating brush having a shaft with hexagonal bearing surfaces, at the end of which a cylindrical wire brush is mounted coaxially to the shaft, the cross-section of the brush being trapezoidal.

[0005] The solutions known from the state of the art and practice have a number of disadvantages. Rotating wire brushes require prolonged use when removing thick layers, especially corrosion. Furthermore, the wire bristles are not only subject to abrasion but can also produce splinters that are dangerous for the user, namely broken pieces of wire that form the bristles. When a thick layer of corroded material or a thick layer of paint needs to be removed from a metal surface, the use of a rotating wire brush involves lengthy treatment of the surface in question—until the surface is cleaned to clean metal.

[0006] The aim of the utility model is to eliminate the disadvantages known from the prior art by developing a cleaning device which can be attached to known chucks of electric drills or similar tools with head pieces suitable for receiving a working device with a bearing shank and whose design enables effective cleaning of material surfaces from thick deposits, corrosion or coatings covering the material surface.

[0007] The cleaning device has a cylindrical, elongated shaft with a first end, on which shaft the cleaning head is mounted.

[0008] The cleaning head is mounted on a second end of the shaft opposite the first end, the first end being inserted into a known drill chuck of a known drill or similar tool having a head for receiving shaft tools.

[0009] The head of the device contains sets of plate-shaped beaters, preferably not fewer than two sets of beaters within the head.

[0010] Each hammer is substantially in the form of a plate, the hammer having a leading edge facing the workpiece surface during use of the device and an opposite trailing edge, and furthermore each hammer is rotatably mounted within a particular hammer set.

[0011] The rotational axis of each set of beaters represents a rod whose longitudinal axis is parallel to the longitudinal axis of the device shaft, the rods supporting the set of beaters being radially offset from the rotational axis of the device shaft and arranged symmetrically to the rotational axis of the shaft, so that the set of beaters projects beyond the outline of the second end of the device shaft.

[0012] The bearing rods of the beaters are mounted on one side in the second end of the shaft and their opposite ends in a stop plate, the surfaces of which run substantially parallel to the surface of the second shaft end and the outer contour of which preferably corresponds to that of the second shaft end, wherein the bearing rods are preferably connected to the second shaft end and the stop plate by welding.

[0013] Advantageously, the distance between the second shaft end of the device and the stop plate of the headpiece is chosen so that the beaters of each plate beater set have the possibility of axial movement, even more advantageously in a range greater than the length corresponding to the thickness of the beater material - along the rods supporting them.

[0014] Advantageously, the device contains at least two sets of plate beaters.

[0015] Advantageously, each of the plate beater sets of the device consists of at least one plate beater.

[0016] Advantageously, the plate beater has a rectangular outer outline.

[0017] Advantageously, the plate beater has an oval outer outline.

[0018] Advantageously, the plate beater has a different contour on the side of the attack edge than on the opposite edge.

[0019] Advantageously, the length of each of the beaters, measured from the axis of the bearing rods to the free end of the beater, is greater than the distance between the axes of the bearing rods, thereby advantageously maintaining the momentum of the beaters created by the rotary movement of the headpiece.

[0020] Advantageously, the shank on the side opposite the head of the device has a polygonal cross-section or is shaped to fit the SDS system (SDS - Steck-Dreh-Seß) or its commonly known variants, or has a known holder equipped with a Morse taper - which does not affect the essence of the solution, but rather represents an advantageous development by ensuring the compatibility of the device with various tools in which known methods of storing tools and work pieces in their heads equipped with storage shanks are used.

[0021] Advantageously, the other end of the shaft and the stop plate of the headpiece do not have circular outlines. Advantageously, the outlines of these device parts have polygonal shapes that correspond to each other in size and shape.

[0022] The subject matter of the utility model completely solves the technical problem posed to it and eliminates the disadvantages known from the prior art. The developed cleaning device, essentially in the form of a hammer brush, is suitable for being mounted with the first shaft end in known drill chucks or similar tools. The use of a hammer cleaning head enables the effective cleaning of material surfaces of thick deposits, in particular corrosion layers or layers covering the material surface, without the risk of wire spatter or the need for lengthy grinding of the respective workpiece area.

[0023] The subject matter of the utility model is shown in the attached drawings, in which: Fig. 1 shows a cross-section of the utility model cleaning device, Fig. 2 the cross section AA of Fig. 1 shows, Fig. 3 shows the view from above, from the head of the cleaning device.

[0024] In one embodiment, the cleaning device has a cylindrical, elongated shaft 1 with a second end 2 having a circular outline - the diameter of the second end 2 of the shaft 1 of the device being larger than the diameter of the shaft 1. The cleaning head 3 is located at the second end 2 of the shaft 1.

[0025] The cleaning head 3 contains sets of plate beaters 4, wherein the cleaning head 3 contains two sets of beaters 4, two beaters 4 within each set of beaters 4.

[0026] Each beater 4 has the shape of a plate with a rectangular outline that is rounded near the axis of rotation of the beater 4, each beater 4 having an attack edge 5 and an opposite rear edge, and furthermore each beater 4 is rotatably mounted within a specific set of beaters 4.

[0027] The axis of rotation of each set of beaters 4 is formed by a rod 6, the rods 6 being radially offset from the axis of rotation of the shaft 1 of the device and arranged symmetrically to the axis of rotation of the shaft 1 such that the beaters 4 project beyond the outline of the second end 2 of the shaft 1, the length of each of the beaters 4 being greater than the spacing of the rods 6 in the headpiece 3.

[0028] In addition, the bearing rods 6, which carry the hammer sets 4, are mounted on one side in the second end 2 of the shaft 1 and with their opposite ends in a stop plate 7 with an outline matching the outline of the second end 2 of the shaft 1, the surfaces of which run substantially parallel to the surface of the second end 2 of the shaft 1, the rods 6 being connected to the second end 2 of the shaft 1 and the stop plate 7 by a weld.

[0029] It is clear to the person skilled in the art that the outline of the hammer 4 may take on a shape other than rectangular, for example, the attack edge 5 and the opposite edge of the hammer 4 may be rounded, or the outlines of the attack edge 5 and the rear edge of the hammer 4 may differ in outline, which represents a further advantageous development of the subject matter of the application.

[0030] Furthermore, it is obvious to a person skilled in the art that the end of the shaft 1 opposite the head piece 3 may have a shape deviating from the cylindrical shape, e.g. this end of the shaft 1 may have a polygonal cross-section or be adapted in its shape so that it can interact with the chuck of the known tool holders of the SDS solution family for rotating tools - which represents a further advantageous development of the subject matter of the application. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 109909855

[0003] CN 104839997

[0004]

Claims

[1] Cleaning device with a cylindrical shaft having a first and a second end, the second end being provided with a cleaning head, characterized by in that the cleaning head (3) has a set of beaters (4), the sets of beaters (4) being rotatably arranged at one of their ends on opposite sides of the cleaning head (3), the axis of rotation of each set (4) of beaters being formed by a rod (6) parallel to the longitudinal axis of the shaft (1) of the device, the rods (6) being symmetrically offset radially to the longitudinal axis of the shaft (1) and being mounted with one side in the second end (2) of the shaft (1), the opposite ends of the rods (6) being mounted in a stop plate (7). [2] Device according to claim 1, characterized bythat the length of the beaters (4), measured from the axis of the bearing rods (6) to the free ends of the beaters (4), is greater than the distance between the axes of the bearing rods (6). [3] Device according to claim 1 or claim 2, characterized by that each of the sets of plate beaters (4) of the device consists of at least one plate beater (4). [4] Device according to one of claims 1 to 3, characterized by that the plate beater (4) has a rectangular outer outline. [5] Device according to one of claims 1 to 3, characterized by that the plate beater (4) has an oval outer outline. [6] Device according to one of claims 1 to 3, characterized by that the plate beater (4) has an outline on the side of the attack edge (5) which differs from the outline of the edge opposite it. [7] Device according to one of claims 1 to 6, characterized bythat the device contains at least two sets of plate beaters (4). [8] Device according to one of claims 1 to 7, characterized by that the distance between the second end (2) of the shaft (1) and the stop plate (7) of the headpiece (3) allows the beaters (4) to move axially along the rods (6) supporting them within the headpiece (3). [9] Device according to one of claims 1 to 8, characterized by that the end of the shaft (1) opposite the head piece (3) has a polygonal cross-section. [10] Device according to one of claims 1 to 8, characterized by that the end of the shaft (1) opposite the head piece (3) is intended for the use of tool holders of the SDS solution family (plug-turn-seat). [11] Device according to one of claims 1 to 8, characterized by that the end of the shaft (1) opposite the head piece (3) has a Morse taper.

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