Brush

Abstract

Brush (23) comprising a handle (24) and a bristle holder (1, 6, 9, 11, 14, 16, 19) with recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) in which bristles (25) grouped into bundles are inserted, wherein the area of ​​a recess (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) is at least 12 mm², wherein adjacent recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) are separated by walls having a wall thickness of 0.6 to 0.9 mm, and wherein a recess (2, 4, 7, 10, 12, 13, 15, 17, 21) has three to five sides, wherein the recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) arranged along the circumference of the bristle holder (1, 6, 9, 11, 14, 16, 19) have a straight or a convex outer surface.

Description

[0001] The invention relates to a brush comprising a handle and a bristle holder with recesses in which bristles bundled together are inserted.

[0002] The bristle holders of such brushes can have different shapes; rectangular or round holders are common, for example. To manufacture the brushes, bundles of bristles are pressed into holes in the holder. If you look at a brush made in this way from the side, the individual bundles of bristles are clearly visible. The visual appearance of the bundled bristles is reminiscent of a doll's head with hair and is therefore considered unsatisfactory. Consequently, there is a need for a brush in which the individual bundles of bristles are not visible.

[0003] The invention is therefore based on the objective of providing a brush in which individual bundles of bristles are not recognizable.

[0004] To solve this problem, in a brush of the type mentioned above, the invention provides that the area of ​​a recess is at least 12 mm², wherein adjacent recesses are separated by walls whose wall thickness is 0.6 to 0.9 mm, and wherein the recesses arranged along the circumference of the bristle holder have a straight or a convex outer surface.

[0005] The invention is based on the understanding that an appealing visual appearance of a brush can only be achieved if several modifications are made.

[0006] According to a first feature of the invention, the area of ​​a recess is at least 12 mm². If a recess is smaller than 12 mm², the ratio of the areas of the walls separating adjacent recesses to the areas of the recesses is too large, creating the impression that the recesses are not sufficiently filled with bristles. Extensive tests by the applicant have shown that a recess must have a minimum area of ​​12 mm² to avoid the impression of separate bundles of bristles.

[0007] According to a second feature of the invention, adjacent recesses are separated by walls with a wall thickness of 0.6 to 0.9 mm. With walls of smaller thickness, the problem arises that the walls can be deformed when the bristles are pressed in, so that the bristles do not have the desired longitudinal orientation of the brush. With walls of greater thickness, the problem arises that adjacent recesses are then perceived as separate recesses, resulting in the aforementioned "doll's head effect." Extensive testing has shown that only the aforementioned wall thickness range of 0.6 to 0.9 mm produces a brush with an acceptable appearance.

[0008] According to a third feature of the invention, the recesses arranged along the circumference of the bristle holder have a flat or convex outer surface. This means that no round recesses are arranged on the outer surface, as this would make the bristle bundles visible. A brush according to the invention not only has an appealing visual appearance, but the paint it picks up is also distributed evenly in the bristles, thus enabling good results in painting work.

[0009] In the brush according to the invention, a recess is formed as a rectangle, square, rhombus, triangle, trapezoid or a combination thereof.

[0010] A circular recess, however, is located only on the inside of the bristle holder, i.e., not on the outer circumference. If a recess is shaped like one of the aforementioned geometric shapes, adjacent bristle-filled recesses are not recognized as separate areas; rather, the bristles of neighboring recesses form a continuous surface.

[0011] In the brush according to the invention, it can be provided that the thickness of the bristle holder is preferably 20 mm or more, wherein recesses not arranged along the circumference of the bristle holder are either round and / or separated by walls whose wall thickness is more than 0.9 mm and / or are not provided with bristles, or that surfaces not arranged along the circumference of the bristle holder do not have any recesses.

[0012] A further development of the invention provides that the recesses arranged along the circumference of the bristle holder have three to five sides. However, there are no circular recesses on the circumference of the bristle holder.

[0013] Preferably, the length of one side of a recess is at least 3 mm. This ensures that one side of a recess has a minimum length of 3 mm. Consequently, the number of walls required is also reduced, and it prevents bristles grouped together from being recognized as separate bundles.

[0014] According to the invention, the outer surface of the bristle holder is formed from several adjacent recesses, each of which has at least one straight side on its outer surface. Such a recess could also have a differently shaped side on its inner surface, for example, a curved side. However, it is essential that the outer side of the recess in the bristle holder is straight. This ensures that all outer edges of the recesses are straight in the circumferential direction, thus creating the desired impression of a homogeneous surface consisting of bristles.

[0015] Preferably, the bristle holder of the brush according to the invention has four or more rows provided with recesses. With such a structure, a dense bristle structure results on all sides of the brush.

[0016] In this context, it may also be intended that individual recesses not located on the outer side of the bristle holder should be empty. In certain cases, inserting bundles of bristles into all recesses would result in an increased bristle density. Therefore, individual recesses inside the bristle holder may remain empty without these empty recesses being visible when viewing the brush from the side.

[0017] A preferred embodiment of the invention provides that an extended front edge of the bristle holder or a sleeve surrounding the bristle holder projects beyond the recesses in the longitudinal direction of the brush, preferably by 3 to 4 mm.

[0018] DE102020207052 A1 describes a brush comprising a handle and a bristle holder with recesses into which bristles bundled together are inserted, wherein the bristle holder has polygonal recesses.

[0019] The invention is explained below with reference to exemplary embodiments and the drawings. The drawings are schematic representations and show: Fig. 1 is a top view of a bristle holder of a first embodiment of a brush according to the invention; Fig. 2 is a top view of a bristle holder of a second embodiment of a brush according to the invention; Fig. 3 is a top view of a bristle holder of a third embodiment of a brush according to the invention; Fig. 4 is a top view of a bristle holder of a fourth embodiment of a brush according to the invention; Fig. 5 is a top view of a bristle holder of a fifth embodiment of a brush according to the invention; Fig. 6 is a top view of a bristle holder of a sixth embodiment of a brush according to the invention; Fig. 7 is a sectional view of a bristle holder of a seventh embodiment of a brush according to the invention; and Fig. 8 is an embodiment of a brush according to the invention.

[0020] Fig. 1 This is a top view showing a bristle holder 1 of a brush. The handle of the brush is in Fig. 1 and not shown in the further drawings. It can be seen there that the bristle holder 1 has a plurality of individual recesses 2 arranged in several parallel rows. The bristle holder 1 is approximately rectangular. In the circumferential direction, the bristle holder 1 has two straight parallel outer edges and two convex parallel outer edges. All recesses have in common that their area is at least 12 mm². Most of the recesses 2 are rectangular, with a length of 4 mm and a width of 3 mm. These recesses 2 thus have four sides. Between two adjacent recesses 2 is a wall 3, the wall thickness of which is 0.7 mm in this embodiment. In general, the wall thickness between two adjacent recesses can be 0.6 to 0.9 mm. The recesses 4 in the area of ​​the two convex sections are not rectangular, but trapezoidal.They each have two parallel sides arranged parallel to the parallel outer edges of the bristle holder 1. The recesses 4 in the area of ​​the two convex sections have an outer side 5 that is either straight or slightly convexly curved. Bristles grouped into bundles are inserted into the bristle holder 1, but these are arranged in . Fig. 1 not shown. The combination of the minimum recess area of ​​12 mm², the wall thickness of 0.7 mm, and the recesses 2 and 4, each with four sides, results in the individual bristle tufts being imperceptible; rather, all bristles form an almost homogeneous surface. The bristle holder 1 shown has a width of 20 mm.

[0021] The in Fig. 2 The bristle holder 6 shown has a hexagonal base and comprises a total of four rows of recesses 7, each designed as a parallelogram. Accordingly, each recess 7 has two pairs of mutually parallel sides. In accordance with the first embodiment, the area of ​​each recess 7 is 12 mm², and the wall thickness between two adjacent recesses 7 is 0.8 mm. Fig. 2 It can be seen that the recesses 7 are arranged in a total of four rows, with the recesses 7 being arranged symmetrically about both a horizontal and a vertical axis. In the center of the bristle holder 6, a total of four recesses 7, shaped like a rhombus 8, are arranged. All four sides of the rhombus-shaped recesses 8 are of the same length.

[0022] Fig. 3 Figure 1 shows a bristle holder 9, which is shaped like a rhombus. The bristle holder 9 is provided with identical recesses 10, which are also rhombus-shaped. In this embodiment, the wall thickness between adjacent recesses 10 is 0.9 mm. The area of ​​a single recess is 12 mm². The size of a recess 10 and the wall thickness between adjacent recesses 10 mean that the individual bundles of bristles inserted into the bristle holder 9 are not recognizable as such. Instead, the impression is created of an almost homogeneous surface in which the individual bundles cannot be distinguished.

[0023] Fig. 4 Figure 1 shows another embodiment of a bristle holder 11, which has a triangular shape. Most of the recesses 12 are rhombus-shaped. The in Fig. 4 At the lower edge of the bristle holder 11 are recesses 13 with five sides, two sides of which are parallel to the sides of diamond-shaped recesses 12, and the three remaining sides are arranged perpendicular to each other. Accordingly, there are also recesses on the in Fig. 4 The lower edge of the bristle holder 11 has several recesses 13 arranged side by side and spaced apart from each other, so that the same visual impression is obtained from all sides; that is, on each side the bristles inserted into the recesses 12, 13 form a practically homogeneous surface, so that the individual bristle bundles are not visible. In the illustrated embodiment, both the recesses 12 and the recesses 13 have an area of ​​12 mm². The wall thickness between adjacent recesses 12, 13 is 0.6 mm.

[0024] Fig. 5 Figure 1 shows an embodiment of a bristle holder 14, which is circular in shape. The recesses 15 inside the bristle holder 14 are each trapezoidal and arranged in several concentric circles. In this embodiment as well, the area of ​​a recess 15 is 12 mm², and adjacent recesses 15 are separated by walls with a wall thickness of 0.7 mm. To achieve a specific degree of filling, individual recesses 15 can be empty, i.e., they are not provided with bristles. However, all recesses located on the outside of the bristle holder 14 are provided with bristles. Recesses 15 without bristles are therefore located inside the bristle holder 14.

[0025] Fig. 6 Figure 6 shows a sixth embodiment of a bristle holder 16 for a brush. Square recesses 17 are located on the outer circumference of the bristle holder 16. Two rows of circular recesses 18 are arranged within the square recesses 17. When the brush with the bristle holder 16 is viewed from the side, only the bristles inserted into the square recesses 17 are visible. The bristles in the circular recesses 18 are not visible.

[0026] The recesses 18 containing the inserted bristle bundles are concealed and therefore not visible from the side. The side length of the recesses 17 is 3.46 mm, resulting in an area of ​​12 mm². The recesses 17 are separated by walls with a wall thickness of 0.9 mm. The brush, which has the bristle holder 16, looks like a "traditional brush," without the bristles, which are gathered into bundles, resembling a broom or a "doll's head."

[0027] Fig. 7 A cutaway view of a bristle holder of a seventh embodiment of a brush. The bristle holder 19 includes a recess 20 into which a handle is pressed when assembled. On the side opposite the recess 20, the bristle holder 19 has recesses 21 into which bristles can be inserted. The bristle holder 19 has a leading edge 22 that extends 3 to 4 mm beyond the outer end of the recesses 21, so that the recesses 21 are concealed when viewed from the side. In this embodiment, the extended leading edge 22 is integrally formed with the bristle holder 19. Alternatively, embodiments are also possible in which an extended leading edge is formed separately, for example as a sleeve or ring that is attached to the bristle holder. The extended leading edge 22 ensures that the individual bundles of bristles inserted into the recesses 21 are not visible.The section of bristles extending beyond the front edge 22 appears homogeneous.

[0028] Figur 8 Figure 22 shows a brush 23 with a bristle holder 19 to which a handle 24 is attached. Bundles of bristles 25 are inserted or pressed into the bristle holder 22. Due to the extended front edge 22 of the bristle holder 19, the individual bundles are practically invisible; instead, the bristles 25 form a surface that appears almost homogeneous. Reference symbol list

[0029] 1 Bristle holder 2 Recess 3 Wall 4 Recess 5 Side 6 Bristle holder 7 Recess 8 Diamond 9 Bristle holder 10 Recess 11 Bristle holder 12 Recess 13 Recess 14 Bristle holder 15 Recess 16 Bristle holder 17 Recess 18 Recess 19 Bristle holder 20 Clearance 21 Recess 22 Front edge 23 Brush 24 Handle 25 Bristles

Claims

1. Brush (23) comprising a handle (24) and a bristle holder (1, 6, 9, 11, 14, 16, 19) with recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) which are formed as a rectangle, square, rhombus, triangle, trapezoid or a combination thereof, in which bristles (25) grouped into bundles are inserted, wherein the recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) arranged along the circumference of the bristle holder (1, 6, 9, 11, 14, 16, 19) have a straight or convex outer side, characterized in that - the area of a recess (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) is at least 12 mm2, - wherein adjacent recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21) are separated by walls whose wall thickness is 0.6 to 0.9 mm.

2. Brush according to claim 1, wherein the thickness of the bristle holder is 20 mm or more and wherein recesses not arranged along the circumference of the bristle holder - are either round and / or - are separated by walls whose wall thickness is more than 0.9 mm and / or - are not provided with bristles or - that the surfaces not arranged along the circumference of the bristle holder do not have any recesses.

3. Brush according to one of the preceding claims, wherein the recesses arranged along the circumference of the bristle holder have three to five sides.

4. Brush according to one of the preceding claims, wherein the length of one side of a recess (2, 4, 7, 10, 12, 13, 15, 17, 21) is at least 3 mm.

5. Brush according to one of the preceding claims, wherein the bristle holder (1, 6, 9, 11, 14, 16, 19) has four or more rows provided with recesses (2, 4, 7, 10, 12, 13, 15, 17, 18, 21).

6. Brush according to one of the preceding claims, wherein an extended front edge (22) of the bristle holder (19) or a sleeve surrounding the bristle holder protrudes beyond the recesses in the longitudinal direction of the brush (23), preferably by 3 to 4 mm.

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