EP2826401B1

EP2826401B1 - Connection segmental parts brush core

Info

Publication number: EP2826401B1
Application number: EP13075071.4A
Authority: EP
Inventors: Michel Jozef Rene Lambert Huybreckx
Original assignee: KOTI Onroerend Goed BV
Current assignee: KOTI Onroerend Goed BV
Priority date: 2013-06-27
Filing date: 2013-11-05
Publication date: 2022-06-29
Anticipated expiration: 2033-11-05
Also published as: RU2014129579A; RU2576577C2; EP2826401A3; NL1040273C2; EP2826401A2

Description

The invention relates to the mutual connection of the segmentally shaped brush core parts, wherein the mutual connection of double walled segmentally shaped parts are formed to a brush core, wherein the mounted position of said brush core is in the shape of either a roller or a cylinder, wherein brush blocks are provided to the outer wall of the double walled segmentally shaped parts so that either a roller or a cylindrically shaped brush roller is obtained for a broad brush machine for removing hail and snow of large surfaces.
Such a connection of segmental parts is known from the Dutch patent application "Improved Brush Core", number 1039607, filed on May 15th, 2012 by KOTI Onroerend Goed B.V ., Celsiusstraat 18, 6003 DG WEERT, the Netherlands. Said Dutch patent application is converted into a European patent application number 13001562.1 / EP13001562 on March 26th, 2013 , and published as EP2664250 . This application relates to a brush core being composed of cylindrical segmentally shaped parts being double walled and consisting of an inner and outer wall. The inner and outer wall are connected to each other by means of relatively thin ribs. Said cylindrical segmentally shaped parts are mutually connected with relatively thin block shaped parts with zigzag running support surfaces. Through said zigzag running support surfaces a bore is made through which a screw with nut is provided for mutually coupling the cylindrical segmentally shaped parts.
Said described connection is having objections in the way that when the formed brush core is used, with the relatively thin ribs and the block shaped parts, the mounted brush core provided with the brush elements, is relatively bending weak as well in the radial as in the longitudinal direction. Besides, there are disadvantages in relation to the mutual mounting of the cylindrical segmentally shaped parts in view of the fact that said nut of the screw has to be fitted from the inside of the mounted tube-shaped brush core.
Furthermore, a mutually connected segmentally shaped brush core is also known from our patent application number NL 1039290, filed on 12.01.2012 . The patent describes mutually connected segmentally shaped parts of a brush core. The connecting block parts, called thick lips, are three in line zigzag running support surfaces. Through the package of said thick lips a screw bolt is put, which with its end does not stick into the inner circle of the mounted brush core. This solution or execution of the thick lips with the three in line zigzag running support surfaces which are hold together with a screw bolt has in practice several mounting drawbacks in order to get a fixed round shape of said brush core.
Document US6817055 discloses a brush core as defined in the preamble of claim 1.
The object of the present invention is to provide such a modified and improved connection of said cylindrical segmentally shaped parts that said disadvantages are removed and that said improved connection can be put on the market in an economical responsible way.
The present invention relates to a brush core as defined in claim 1. Preferred embodiments are defined by the dependent claims.
To this end the segment connection of the brush core according to the invention is further developed in such a way, characterized in that said mutual connection of the double walled segmentally shaped parts consists of block shaped thick lips with only two in line zigzag running support surfaces, forming one whole with the thicker executed ribs for obtaining a connection with the inner and outer wall of the double walled segmentally shaped parts with a higher bending strength; and in that said upper thick lip is provided with at least one bore hole for receiving said screw shaft and said screw head, said at least one screw is preferably a socket head screw.
The advantage is, that the capacity in respect of the bending strength of the formed brush core is substantial and is sufficiently increased such that the brush core will hardly be deformed in use and the quality of the brushing will fulfil high requirements.
Furthermore the segment connection of the brush core according to the invention is improved further being characterized in that the length of the socket head screw is such that the bottom almost coincides with the lower thick lips and that below the lower thick lip a rectangular space remains so that this is, together with a rectangular space in the drive roller of the brush machine, a flat inlay key can be received.
The advantages are that the production and mounting can be done in a fast, easy and economical way.
Now the segmental connection of the brush core according to the invention is further developed and characterized in that the maximum thickness of said thick lips amounts between 10 and 30 mm, preferably around 18 mm.
The invention is further elucidated on hand of a preferred embodiment shown in the drawing in which:

figure 1 shows a cross section of the connection of the double walled segmental parts for a brush core according to a preferred embodiment;
figure 2 shows a cross section of a complete double walled segmental part for a brush core consisting of 8 components;
figure 3 shows a cross section of the brush core according to figure 2;
figure 4 shows a cross section of a complete double walled segmental part for a brush core consisting of 7 components;
figure 5 shows a cross section of the brush core according to figure 4;
figure 6 shows a cross section of a complete double walled segmental part for a brush core consisting of 4 components; and
figure 7 shows a cross section of the brush core according to figure 6.

In figure 1 the mutual connection 1 of two double walled segmental parts 2,3 and 4 is shown in detail (see also the figures 2 up to 7). The double walled segmental parts 2, 3, 4 are mounted to obtain a cylindrical brush core 3 according to the figures 3, 5 and 7. The mutual connection 1 of two succeeding double walled segmental parts 2, 3, 4 is always executed according to figure 1. The cross section of the double walled segmental parts 2, 3, 4 is executed differently. This is caused by the different outer diameters, such as of figure 3 (8 components) circa 618 mm, figure 5 (7 components) circa 538 mm and of figure 7 (4 components) circa 374 mm. Said different diameters are used for the various brush machines in use. It always relates to cross sections according to the preferred embodiments shown (see figures 2, 4, 6), in which the mutual connection 1 is shown in figure 1. The mutual connection 1 consists of the block shaped thick lips 5 and 6 with zigzag running bended support surfaces 7, 8 enclosing an angle of about 135 degrees. The zigzag shaped bended support surfaces 7, 8 are serving for a good radial enclosing of the double walled segmental parts 2, 3, 4 when forming the cylindrical brush core 9, 10 and 11 (see figures 3, 5 and 7). See also EP 13001562 for a first embodiment.
In at least the lower lip 6 a screw thread is provided for the socket head (inbus) screw 12, preferably being fabricated of stainless steel. The socket head screw 12, is about 100 up to 200 mm from centre to centre, connects the double walled segmental parts 2, 3, 4 to one another to a ring-shaped cross section of the brush core. The double walled segmentally shaped parts 2, 3, 4 are in principle of aluminium and are obtained by means of an extruding process. Further below the lower lip 6 a rectangular space 13 is present, together with a similar rectangular space of the drive disk of the brush machine (not shown) forming a radial enclosing of a flat inlay key. Further the ribs 14, 15; 16, 17; 18, 19 are thickened in its height in respect of the ribs 20, 21, 22. The middle ribs 23, 24, 25 are provided with a circular opening for receiving screw thread for the radial enclosing with the drive disk (not shown) of the brush machine. Further the outer walls 26, 27, 28 and the inner walls 29, 30, 31 of the double walled segmental parts 2, 3, 4 are having the same thickness of about 6 mm. The solid connecting blocks 32 for receiving the brush elements (not shown) are forming one whole with the outer walls of the figures 2, 3, 4 directly with either the outer wall 26 or the more solid parts 33, 34.
In the way as described above, a brush core for a brush machine with a very high bending strength in longitudinal and cross direction is obtained.
Finally, is has to be pointed out, that a preferred embodiment of the cylindrical brush core 3 is described above and that it is self-evident that further modifications are possible without leaving the scope of the appended claims.

Claims

Brush core in the shape of a roller or a cylinder, being composed of double walled segmental parts (2, 3, 4), wherein in the mounted position said brush core is in the shape of a roller or a cylinder, wherein connecting blocks (32) are provided to the outer wall (26, 27, 28) of the double walled segmentally shaped parts (2, 3, 4) so that a roller or cylindrically shaped brush roller is obtained for a broad brush machine for removing hail or snow of large surfaces, wherein the mutual connection (1) of said double walled segmental parts (2, 3, 4) includes an upper lip (5) and a lower lip(6) which are connected to each other with at least one screw (12) comprising a screw head and an screw shaft; wherein in radial direction at least one threaded bore hole is provided in at least a lower thick lip (6) for receiving said screw shaft; characterized in that said mutual connection (1) of the double walled segmentally shaped parts (2, 3, 4) consists of block shaped thick lips (5, 6) with only two in line zigzag running support surfaces (7, 8) forming one whole with the thicker executed ribs (14, 15; 16, 17; 18, 19) for obtaining a connection of the inner and outer wall (26, 27, 28; 29, 30, 31) of the doubled walled segmentally shaped parts (2, 3, 4) with a higher bending strength; and in that said upper thick lip (5) is provided with at least one bore hole for receiving said screw shaft and said screw head, said at least one screw is preferably a socket head screw.
Brush core according to claim 1, characterized in that the length of the socket head screw (12) is such that the bottom almost coincides with the lower thick lip (6).
Brush core according to claim 1, characterized in that below the lower thick lip (6) a rectangular space (13) remains so that in this, together with a rectangular space in the drive roller of the brush machine, a flat inlay key can be received.
Brush core according to claim 1, characterized in that the maximum thickness of said thick lips (5, 6) amounts between 10 and 30 mm, preferably around 18 mm.
Brush core according to claim 1, characterized in that said thicker executed ribs (14, 15; 16, 17; 18, 19) are having a thickness amounting between 10 and 25 mm, preferably around 11 or 12 mm and that the thickness of the remaining ribs and plates amounts between 4 and 10 mm, preferably around 6 mm.
Brush core according to claim 1, characterized in that the top angle of the zigzag shaped support surfaces (8, 7) amount around 135 degrees.
Brush core according to claim 1-6, characterized in that the material of the extruded segmental parts (2, 3, 4) is aluminium.