SEGMENTS FOR ARRANGING ON AND FOR FORMING A DISC BRUSH

Abstract

A segment for detachably arranging on a carrier, which can be rotatably mounted relative to an axis of rotation, for forming a disc brush or for forming a cleaning, grinding or polishing disc, includes a segment body, wherein multiple bristles protrude from the underside thereof or an abrasive grit and/or a fiber structure is arranged on the underside thereof, wherein the segment body has a segment guide extending in the radial direction in relation to the axis of rotation of the carrier on a radially internal edge and spaced apart from an external—in relation to a circumferential direction—lateral edge of the segment body, which segment guide is designed to cooperate with a corresponding carrier guide formed or arranged on the carrier for arranging the segment on the carrier.

Claims

1-17. (canceled)

18. A segment for arranging releasably on a carrier configured to be mounted rotatably with regard to an axis of rotation for forming a circular brush or for forming a cleaning, grinding or polishing disk, comprising: a segment body having a lower side from which a plurality of bristles protrude or from which an abrasive grit and/or a fiber structure are/is arranged, the segment body having a segment guide which extends in a radial direction in relation to the axis of rotation of the carrier in a manner which is adjacent to an inner edge which is radially on an inside and in a manner which is spaced apart from a side edge lying on an outside in relation to a circumferential direction of the segment body, which segment guide is configured to interact with a corresponding carrier guide which is configured on the carrier or is arranged thereon for arranging the segment on the carrier.

19. The segment as claimed in claim 18, the segment guide being situated at a predefined spacing from the side edge of the segment body which lies on the outside in the circumferential direction between a pair of side edges which lie opposite one another.

20. The segment as claimed in claim 18, wherein one of the segment guide and the carrier guide has an extension which extends in the radial direction and can be inserted into a radially extending receptacle of corresponding configuration of the respective other one of the segment guide and the carrier guide.

21. The segment as claimed in claim 20, the receptacle being delimited in the circumferential direction by a set of two side cheeks which lie opposite one another.

22. The segment as claimed in claim 20, the receptacle being delimited in the radial direction by an end wall.

23. The segment as claimed in claim 22, the end wall having a mechanical encoding which is of corresponding configuration with respect to a counter-encoding which is configured on the extension.

24. The segment as claimed in claim 20, the receptacle having, as viewed in an axial direction, a cover section which protrudes as far as the inner edge on at least one of an upper side or the lower side of the segment body.

25. The segment as claimed in claim 20, the receptacle extending continuously from an upper side to the lower side of the segment body.

26. The segment as claimed in claim 23, wherein an inner wall which lies radially on the inside has a further mechanical encoding which is configured to interact with a further counter-encoding of corresponding configuration with respect to the further mechanical encoding of the carrier.

27. The segment as claimed in claim 18, the segment body having a securing element which is configured to form a radial fixing of the segment on the carrier in a manner which corresponds to a counter-securing element which can be arranged on the carrier or is configured thereon, and is arranged on an upper side of the segment body or is accessible from the upper side of the segment body.

28. The segment as claimed in claim 27, the securing element being recessed, embedded or integrated into the segment body.

29. The segment as claimed in claim 18, the segment body being a plastic body or metal body which is milled or cut from a blank.

30. A carrier for forming a circular brush or for forming a cleaning, grinding or polishing disk, comprising: a carrier disk which can be driven rotatably with regard to an axis of rotation on a sweeping or cleaning machine and on a lower side of the carrier which a plurality of carrier guides which extend in each case in a radial direction for in each case one segment is arranged or configured.

31. The carrier as claimed in claim 30, the carrier guides in each case having a radially outwardly protruding projection which can be inserted into a receptacle corresponding to the respective carrier guide of the respective segment, which projection is arranged on the lower side of the carrier with the formation of a radially accessible axial gap.

32. The carrier as claimed in claim 30, a plurality of counter-securing elements being arranged or configured on an upper side of the carrier, which counter-securing elements, for radially and/or axially fixing the respective segment, can be brought releasably into engagement with a securing element which is provided on the respective segment.

33. The carrier as claimed in claim 32, the counter-securing element having a securing bracket which is mounted pivotably on the upper side of the carrier and can be brought releasably into engagement with the securing element of the respective segment.

34. The carrier as claimed in claim 32, the counter-securing element being manufactured from an elastic material or comprising an elastic material and being capable of being brought into engagement with the securing element of the respective segment only or in a clamping manner by a mechanical pre-stress brought about by way of elastic deformation and/or with the formation of a press fit.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[0071] Further features, aims and advantages of the present invention will be explained in the following description of exemplary embodiments on the basis of the accompanying drawing figures.

[0072] FIG. 1 shows a perspective illustration of a circular brush which is fitted with a plurality of brush segments.

[0073] FIG. 2 shows a plan view of an embodiment of a segment body, as viewed from below.

[0074] FIG. 3 shows a perspective illustration of the segment body according to FIG. 2

[0075] FIG. 4 shows an exploded illustration of the circular brush according to FIG. 1.

[0076] FIG. 5 shows a cross section through the circular brush.

[0077] FIG. 6 shows an enlarged detail of the cross section according to FIG. 5.

[0078] FIG. 7 shows a plan view of the holder which is arranged on the lower side of the carrier.

[0079] FIG. 8 shows a plan view of a further embodiment of a segment, as viewed from below.

[0080] FIG. 9 shows a further exemplary embodiment for releasable arranging of a plurality of segments on a carrier,

[0081] FIG. 10 shows a plan view of one of the segments which are shown in FIG. 9.

[0082] FIG. 11 shows a perspective illustration of the segment according to FIG. 10.

[0083] FIG. 12 shows a further perspective illustration of a further segment.

[0084] FIG. 13 shows a perspective illustration of a further embodiment of a segment.

[0085] FIG. 14 shows an exploded illustration of a further embodiment of segments for releasable arranging on a carrier.

[0086] FIG. 15 shows a perspective illustration of the arrangement according to FIG. 14.

[0087] FIG. 16 shows an isolated perspective illustration of a segment according to FIG. 14 and FIG. 15.

[0088] FIG. 17 shows a perspective illustration of a further embodiment of a segment.

[0089] FIG. 18 shows a perspective illustration of a plurality of segments according to FIG. 17 in a final mounting position on a carrier with counter-securing elements which are situated in a release position.

[0090] FIG. 19 shows a perspective illustration of the arrangement according to FIG. 18, but with counter-securing elements which are situated in a securing position.

[0091] FIG. 20 shows an enlarged illustration of a part region of FIG. 19.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENT

[0092] FIGS. 1 and 3 show a sweeping or cleaning apparatus 10 which can be mounted rotatably with regard to a rotational axis 1 on a sweeping or cleaning machine. The sweeping or cleaning apparatus can be, for example, a circular brush. The sweeping or cleaning apparatus 10 has a disk-like, possibly circular carrier 12 with a carrier disk 14, on the lower side 15 of which a plurality of brush, cleaning, grinding or polishing segments 40 are provided and are arranged releasably, in particular replaceably. In the exemplary embodiment, which is shown, a plurality of bristles 6 protrude downward from a lower side 41 of the respective segments 40 approximately in the direction of a rotational axis 1 of the sweeping or cleaning apparatus 10.

[0093] One example of a segment 40 which is configured, for example, as a brush segment is shown in detail in FIGS. 2 and 3, for example. A plurality of fastening points 50 which are configured, for example, as blind bores are provided on the lower side 41 of the segment 40, in or to which fastening points 50 in each case individual bristles or a plurality of bristles 6 can be fastened in a manner known per se. Instead of brush segments 40 which are equipped with bristles 6 of bristle tufts, the sweeping or cleaning apparatus 10 can also likewise be configured with cleaning segments (not shown in the present case), on the lower side of which, which faces a surface to be machined or to be cleaned, a grinding or cleaning pad is arranged or configured instead of bristles. The circular brush would then not be configured as a brush, but rather as a cleaning, grinding or polishing disk.

[0094] The individual segments 40 which can be arranged on the carrier 12 and are of largely identical configuration have in each case one segment body 42 which is of pie wedge-like configuration or, with regard to its opposite side edges 43, 45 as shown in FIG. 4, for example, is of wedge-shaped configuration. FIGS. 2, 3 and 4 show merely one of many conceivable geometrical embodiments of a segment body 42. A plurality of segment bodies 42 which are arranged on the lower side of the carrier 12 so as to adjoin one another in the circumferential direction u advantageously complete one another to form a full circle or to form a circular ring, as is shown in FIG. 4, for example. Here, a total of eight segment bodies 42 which adjoin one another directly in the circumferential direction u form a closed circumferential ring, each of the segment bodies 42 being releasably arranged separately on the lower side 15 of the carrier 12. The carrier 12 has, for example, a circular or annular, largely planar carrier disk 14.

[0095] A plurality of what are known as carrier guides 30 are arranged or configured on the lower side 15 of the carrier 12, which carrier guides 30 extend in the radial direction in relation to the rotational axis 1. In a complementary manner with respect to the carrier guides 37 which are shown, for example, in FIG. 7 and FIG. 4, each of the segments 40 has a segment guide 47 which extends in the radial direction in relation to the rotational axis 1 of the carrier 12 and so as to adjoin an inner edge 14 which lies radially on the inside. The segment guide 47 is typically situated spaced apart from an outer (in relation to the circumferential direction u) side edge 43, 44 of the respective segment body 42. The segment guide 47 is configured to interact with the carrier guide 37 which is provided on the carrier for arranging the segment 40 on the carrier 12. In the exemplary embodiment of FIGS. 1 to 7, the segment guide 47 in each case has a receptacle 48 which extends in the radial direction r and is of complementary configuration with respect to a correspondingly radially oriented or radially extending extension 38 of the carrier guide 37. In other words, each segment 40 can be plugged with its radially inwardly directed introduction opening of the receptacle 48 onto an extension 38 of the carrier guide 37, which extension 38 protrudes radially to the outside with its free end.

[0096] In the case of the mounting direction from the radial outside to the radial inside of the individual segments 40, the segment guide which adjoins the inner edge 44 enables an earliest possible interaction with the segment guide 47, with the result that the introduction or the radially inwardly directed mounting can take place particularly simply.

[0097] As shown, in particular, in FIGS. 2 and 3, the receptacle 48 has two side cheeks 53, 55 which lie opposite one another. In the example, which is shown, the side cheeks 53, 55 extend substantially parallel to one another. Furthermore, they extend parallel to an imaginary center or symmetry line of the segment body 42, which line runs in the radial direction. In a complimentary manner with respect thereto, the carrier guide 37 therefore has side cheeks 33, 35 which correspond to its radially outwardly protruding extension 38 and, during the mounting of the segment or the segment body 42 on the carrier 12, slide along on the side cheeks 53, 55 which are of complementary or corresponding configuration with respect thereto.

[0098] In this way, the side cheeks 33, 35, 53, 55 which are of complementary configuration with respect to one another can act as a sliding or guide faces in the case of the mounting of the segment 40 on the carrier 12. In a manner which adjoins the inner edge 44 which lies radially on the inside, the side cheeks 53, 55 have insertion bevels 54 which widen in the circumferential direction toward the receiving edge and act as a centering aid and as an insertion aid for the extension 38.

[0099] The receptacle 48 is delimited in the radial direction by an end wall 56. The extension 38 also has an end side 36 which comes into contact with the end wall 56 when the final mounting position of the segment 40 on the carrier 12 is reached. The mutual contact position of the end wall 56 and the end side 36 limits a mounting movement of the segment 40 on the carrier 12. In addition, the segment 40 can be supported on the carrier 12 in the radial direction r via the mutual contact position of the end wall 56 and the end side 36. The width of the extension 38 in the circumferential direction u can correspond substantially to the clear span between the side cheeks 53, 55. It can also be somewhat smaller, however, in order to make particularly simple, cant-free mounting of the segment 40 on the carrier 12 possible, in particular.

[0100] As shown, in particular, in FIGS. 2 and 3, the end wall 56 can have an encoding means 57 which is provided, for example, with a radial projection 58. In a complementary or corresponding manner with respect to this, the end side 36 can also have a counter-encoding means 39 which passes into engagement in a positively locking manner with the mechanical encoding means 57 when the final mounting configuration is reached. Therefore, the counter-encoding means 39 can have a cutout or groove which corresponds to the shape of the extension or the projection 58. When the final mounting configuration is reached, further fixing with an accurate fit of the segment 40 on the carrier 12 can be achieved by way of the mutual engagement of the encoding means 57 and the counter-encoding means 39.

[0101] In the exemplary embodiment, which is shown, the mechanical encoding means has an acutely tapering projection 58 which can be introduced into the cutout of the counter-encoding means 39, which cutout is complimentary with respect thereto and correspondingly tapers. In this way, a type of centering action in relation to the circumferential direction u can take place as soon as the segment body 42 reaches its final mounting position on the carrier 12.

[0102] The exemplary embodiment which is shown of the encoding means 57 and the counter-encoding means 39 is merely exemplary. For instance, the mechanical encoding means 57 can also have a radial cutout into which a radial extension, of corresponding configuration with respect thereto, of the mechanical counter-encoding means 39 of the segment guide 37 engages.

[0103] As is shown, furthermore, in FIGS. 2 and 3, the receptacle 48 is delimited in the axial direction z, that is to say in the direction parallel to the rotational axis 1, by a cover section 59 which protrudes as far as the inner edge 44 of the segment body 42. The cover section 59 closes the receptacle 48 toward the top, toward the upper side 49 of the segment body 42. The cover section 59 can be part of the upper side 49 of the segment body 42. The cover section 59 typically extends between the side cheeks 53, 55 of the receptacle 48 which lie opposite one another. It closes the receptacle 48 toward the top in the axial direction. The receptacle 48 is open toward the bottom. That is to say, the side cheeks 53, 55 are not delimited toward the bottom in the axial direction, but rather merge directly into the lower side 41 of the segment body 42 which is otherwise of substantially planar configuration. The side cheeks 53, 55 are delimited toward the top and in the opposite axial direction by the cover section 59.

[0104] As is apparent, in particular, from FIGS. 4 to 7, a disk-like intermediate piece 20 is arranged first of all on the lower side of the carrier disk 14. A further mechanical encoding means 22, for instance in the form of a wave pattern, is configured on the outer edge on the intermediate piece 20 which has a much smaller radius than the carrier disk 14. Finally, a holder 30 is arranged on the intermediate piece 20, and therefore on that lower side of the intermediate piece 20 which faces away from the carrier disk 14, on which holder 30 the carrier guides 37 are configured. The holder 30 can likewise have a disk-like contour and geometry.

[0105] Through openings 81, 82, 83 which in each case come to lie in an aligned manner with respect to one another and act as screw holes can be configured on the carrier plate 14, the intermediate piece 20 and on the holder 30. Via those through openings 81, 82, 83, the components of carrier disk 14, intermediate piece 20 and holder 30 can be connected fixedly to one another. The outer radius or the radial external dimensions of the holder 30 are at least slightly greater than those of the intermediate piece 20. In particular, the carrier guides 37 which protrude radially toward the outside on the holder 30 or the extensions 38 can project from the radial outer edge of the intermediate piece 20, as is shown, for example, in the enlarged illustration of FIG. 6.

[0106] To this extent, an axial gap 85 is formed between the lower side 15 of the carrier disk 14 and an upper side of the holder 30, which upper side faces the carrier disk 14. During the introduction or plugging on of the segments 40, the cover section 59 which protrudes onto the upper side 49 of the segment bodies 42 passes into that gap 85. In this way, the relevant segment 40 or the segment body 42 can be clamped in or secured axially with its cover section 59 in the intermediate space or in the gap 85 between the carrier disk 14 and the holder 30. An axial securing means of this type is achieved immediately when the radially inner final mounting configuration of the segment bodies 42 on the carrier 12 is reached. Finally, the segment 40 or its segment body 42 only has to be secured or fixed on the carrier 12 in the radial direction r.

[0107] For this purpose, in accordance with the embodiment which is shown in FIGS. 1 to 7, in each case at least one upwardly projecting securing element 70 can be provided on the upper side 49 of the segment bodies 42. In the exemplary embodiment, which is shown, the securing element 70 is configured as a hook, the free bent-over end of which points radially outward. A counter-securing element 17 is situated on the upper side 16 of the carrier disk 14 spaced apart radially on the inside from the position of the securing element. The counter-securing element can be, for example, a toggle lever and/or clamping closure, for instance with a securing bracket 170, the toggle lever and/or clamping closure, or its securing bracket 170, interacting with the securing element 70, for instance with the hook of the segment 40.

[0108] A closure of the counter-securing element, for example of the clamping closure, results in a radially inwardly directed holding force being exerted on the segment body. At the same time, the segment body 42 is not only secured radially, but rather also axially on the carrier disk 14. It is advantageous here that the securing element 70 is arranged on the upper side 49 of the segment body 42 or is configured thereon, and that the securing element 70 is accessible from the upper side 49 of the segment body 42, and even from the upper side 16 of the carrier disk 14. This makes particularly simple, possibly tool-less mounting and dismantling of the segments 40 on and from the carrier 12 possible.

[0109] The lower side 15 of the carrier disk 14 can be configured to be substantially smooth and free from projections. The upper side 49 of the individual segments 40 can likewise be of smooth and planar configuration, with the exception of the securing element 70. Those surfaces of the carrier disk 14 and the segment 40 which pass into a contact position with one another during the mounting of the segments 40, therefore the upper side 49 which passes into contact with the lower side 15, make sliding and in this regard guided mounting of the segments 40 on the carrier 12 possible.

[0110] In order not to impede a radially inwardly directed introduction of the segments 40 into the final mounting position, the carrier disk 14 can have a plurality of cutouts 18 which come to lie in the region of the respective counter-securing element 70, in a manner which adjoins the outer edge of said carrier disk 14, into which cutouts 18 the upwardly protruding securing elements of the segment body 42 can be introduced radially to the inside. Instead of through openings or cutouts 18 which protrude toward the outside or into the outer edge, furthermore, conceivable through openings which are closed in the circumferential direction and spaced apart from the outer edge of the carrier disk 14 are possible, which through openings latch, for example, with securing elements 70 which project from the upper side 49 or pass into latching engagement therewith.

[0111] In this regard, the securing element 70 which projects from the upper side of the segment body 42 can also be configured as a latching or snap-action element which passes in a latching manner into engagement with an opening edge of a through opening of the carrier disk 14 as soon as the segment 40 has reached its final mounting position on the carrier 12.

[0112] The shape of the segment body 42, which shape is configured to be substantially planar and free from projections, makes particularly simple and efficient and inexpensive production possible. In particular, the segment body 42 can be configured as a plastic body or metal body which is milled, cut or punched from a blank. Single-piece segment bodies of this type also prove advantageous with regard to their environmental footprint, since they consist only of one material which can be recycled particularly satisfactorily.

[0113] Furthermore, as is shown, in particular, in FIGS. 2 and 3, the cover section 59 can be provided, in a manner which adjoins the inner edge 44, with a further encoding means 52 which is of corresponding or complementary configuration with respect to the counter-encoding means 22 on that outer edge of the intermediate piece 20 which lies radially on the outside. The encoding means 52 and counter-encoding means 22 can be provided instead of or in addition to the coding means 57 and the counter-coding means 39. The coding means and complementary counter-encoding means can ensure that exclusively the segment bodies 42 which are provided for a certain carrier 12 can be mounted on the latter. In contrast, segment bodies 42 or segments 40 with a non-matching encoding means or counter-encoding means cannot be mounted on a carrier 12 which is not provided for this purpose.

[0114] The further exemplary embodiment of the segment according to FIG. 8 is configured to be completely free and without encoding means of this type. The inner edge 44 which lies radially on the inside is of largely planar configuration. The end wall 56 of the receptacle 48 is also likewise of substantially planar or rectilinear configuration.

[0115] The exemplary embodiment according to FIG. 9 represents, as it were, a kinematic reversal of the above-described carrier guide 37 and segment guide 47. In the case of this exemplary embodiment which is shown in FIGS. 9 to 11, the holder 130 which is provided on the carrier 12 has a plurality of carrier guides 37 which extend in the radial direction but, in contrast to the embodiment which is shown in FIGS. 1 to 7, have receptacles 138 which are open radially to the outside and into which extensions 148, of corresponding configuration with respect thereto, of the respective segments 140 can be introduced in the radial direction, that is to say in a radially inwardly directed manner. The receptacles 138, provided on the carrier 12, of the carrier guides 137 in each case have side cheeks 153, 155 which lie opposite one another and a radially inner end wall 156.

[0116] As shown, in particular, in FIGS. 10 and 11, the segment body 142 has a segment guide 147 which extends radially inward away from the radial inner edge 144 of the segment body 142 and, in this respect, projects radially inward from the approximately rectilinear or arcuately curved inner edge 144. The extension 148 can be introduced radially with an accurate fit into the receptacle 138 which corresponds with it. The extension 148 has side cheeks 133, 135 which lie opposite one another, and an end side 136 which is provided at the free end of the extension 148. As shown, in particular, in FIG. 9, the end sides 136 of the segment bodies 142 come into contact radially with the end walls 156, of complementary configuration with respect thereto, of the receptacles 138.

[0117] It is shown in the present case that the receptacles 138, and therefore the carrier guides 137, are arranged on the holder 130. They might also likewise be configured on the intermediate piece 120 which is covered axially by an approximately disk-shaped holder 30 (not shown). A plate which lies axially on the planar and aligned arrangement of segments 40 and holder 30 in the illustration according to FIG. 9 can close the receptacles 138 in the axial direction. On the side which faces away from the observer, and therefore on the upper side 149 of the segments 140, the carrier disk 14 (not shown separately in FIG. 9) lies anyway. As shown, furthermore, in FIGS. 10 and 11, the lower side 141 of the segments 40 are provided with a plurality of fastening points 50 for bristles or bristle tufts. The radially outer region of the segment 140 is delimited by side edges 143, 145 which lie opposite one another and extend approximately in the radial direction in relation to the rotational axis 1. The outer edge 146 is provided in a manner which lies radially on the outside and connects the outer edges 143, 145 to one another.

[0118] FIGS. 12 and 13 show a further exemplary embodiment of a segment 240, which further exemplary embodiment has a segment body 242 and is of similar configuration to the segment 40 according to FIGS. 2 and 3. In this respect, reference can be made substantially to the description of the segment 40, corresponding designations of the segments which are shown in FIGS. 12 and 13 being increased by the numerator 200 in comparison with the segment 40 which is shown in FIGS. 2 and 3.

[0119] The segment body 242 has an outer edge 246 which lies radially on the outside, an inner edge 244 which lies radially on the inside, and two side edges 243, 245 which lie opposite one another. The segment guide 247 which lies radially on the inside and adjoins the inner edge 244 is configured as a receptacle 248 for an extension, of complementary configuration with respect thereto, of the carrier 12. The receptacle 248 is delimited laterally (that is to say, in the circumferential direction) by side cheeks 253, 255. The receptacle 248 is delimited in the radial direction by an end wall 256. In contrast to the segment 40, the segment 240 has a receptacle 48 which extends continuously from the upper side 249 to the lower side 241 (not shown). In other words, the side cheeks 253, 255 and the end wall 256 directly adjoin both the upper side 249 and the merely indicated lower side 241.

[0120] The exemplary embodiment of FIG. 13 differs from that of FIG. 12 in that a mechanical encoding means 257 is configured in the region of the end wall 256, which mechanical encoding means 257 is configured, for example, in the manner of a toothing system. The segment 240 can be produced even more simply in terms of production technology than the segment 40. It can be configured, in particular, as a punched part. For axial and/or radial fixing of the segment 240 on the carrier 12, the segment 240 has a securing element 270 which is integrated into the upper side 249 in a flush-mounted manner. The securing element 270 can be, for example, a screw hole, a threaded bore or openings of the like in the upper side 249 of the segment body 242. The securing element 270 can interact, for example, with a fastening screw which can be guided through a corresponding screw hole of the carrier disk 14.

[0121] If the segment 240 is provided as a metal body, the securing element 270 can be configured directly as a threaded bore. In the case of embodiments of the segment body 242 in the form of a plastic body, a metal sleeve with an internal thread, for example a drive-in nut, can be embedded into the segment body 242 or can be arranged fixedly thereon, for example. The integration or the non-releasable arrangement of a securing element on the segment body 242 proves advantageous with regards to mounting.

[0122] The further embodiment of a segment 340 according to FIGS. 14 to 16 is relatively similar to that of FIGS. 1 to 7. The holder 30 which is arranged on the lower side 15 of the carrier disk 14 has a plurality of radially outwardly projecting carrier guides 37 which in each case have a radially outwardly protruding extension 38. The segment 240 has a segment body 342 with side edges 343, 345 which lie opposite one another, and with an inner edge 344 which lies radially on the inside and an outer edge 346 which lies radially on the outside.

[0123] Here, the segment guide 347 which adjoins the inner wall 344 also has a receptacle 348 which extends in the radial direction and is delimited in the circumferential direction by side cheeks 353, 355 which lie opposite one another. In the axial direction, however, the receptacle 348 is of closed configuration on both sides. The segment body 342 has a lower cover section 351 and an opposite upper cover section 359. The clear spacing between the side cheeks 353, 355 which lie opposite one another corresponds substantially to the width of the extensions 36 as viewed in the circumferential direction u. The clear spacing between the cover sections 351, 359 corresponds substantially to the axial thickness or height of the extensions 38. As is shown, in particular, in the exploded illustrations according to FIGS. 14 and 15, the segment bodies 342 which are provided with the receptacle 348 which is configured, for example, as a blind hole or as a groove are plugged in the radial direction onto the extensions 38 of the holder 330 which are spaced apart from the lower side 15 of the carrier disk 14 at least by the thickness of the cover section 359. Radial securing of the individual segments 340 can take place in the way which is shown above in respect of the other embodiments.

[0124] FIGS. 17 to 20 show a further exemplary embodiment of the segment 440 which, apart from a securing element 470 which is provided on its upper side 449 there, is of largely identical configuration to the segments which are shown in FIGS. 1 to 8.

[0125] The segment 440 has a segment body 442 with side edges 443 and 445 which lie opposite one another. On a radially inwardly pointing inner edge 444 of the segment body 442, a mechanical encoding means 452 is provided in a comparable manner to the mechanical encoding means 52 of the segment 40 which is shown, for example, in FIGS. 2 and 3.

[0126] A securing element 470 is arranged or configured on the upper side 449 of the segment 440 or the segment body 442. In the illustration, which is shown, the securing element 470 protrudes upward, that is to say in the axial direction from the upper side 449 of the segment body 442. In a mounting position on the carrier 16, furthermore, it penetrates its cutout 18 and, in this regard, comes to lie on the upper side of the carrier 16, or it protrudes from the upper side of the carrier 16 upward or in the axial direction.

[0127] The securing element 470 has a fastening section 471 which lies approximately flatly on the upper side 449 or is integrally formed thereon, and a securing section 472 which projects approximately at a right angle therefrom and extends away from the plane of the upper side 449. The securing section 472 has a cutout 474 which is open toward the top or in the axial direction. The inner edge of the cutout 478 can have a chamfer 476. The inner edge 478 can form an opening boundary of the cutout 474, which opening boundary has an extent of more than 180° in the circumferential direction.

[0128] The cutout 474 is configured to pass into engagement with a counter-securing element 417 which is arranged pivotably on the carrier 12. The counter-securing element 417 has an elongate securing bracket 430. The securing bracket 430 can be manufactured from an elastic material, for example from a natural or synthetic rubber or elastomer material. The securing bracket 430 is mounted pivotably with regard to a pivot axle 423. The pivot axle 423 is held by two limbs 421, 420 which protrude from the upper side 16 of the carrier 12 upward or in the axial direction. The limbs 421, 422 and the axle 423 which penetrates the limbs form a pivot bearing 420 for the securing bracket 430.

[0129] The securing sleeve 430 has an elongate shank 432 with a counter-securing section 436 which is widened in comparison with the shank, and with a head 434 which is widened at the end which faces away from the axle 423. The head 434 which can be of C-shaped configuration acts as a handle, in order to transfer the counter-securing element 417 from a release position (shown, for example, in FIG. 18) into a securing position (shown in FIGS. 19 and 20).

[0130] The counter-securing section 436 is configured, in particular, to radially lie in a clamping manner on the radially outwardly pointing cheek or side of the securing element 470. A corresponding clamping action can be achieved, in particular, by way of an elastic and radial expansion or dilatation of the shank 432. The shank 432 has an outer circumference which is of corresponding configuration to the geometry of the cutout 474. It can be configured with a slightly greater diameter, with the result that the shank 432 can be fixed in the cutout 474 in a clamping and/or clipping manner.

[0131] That surface of the counter-securing section 436 which faces the axle 423 and protrudes to the outside from the shank 432 can be configured with an accurate fit or in a complementary manner with respect to the geometry of that inner edge 478 of the cutout 474 which is provided with a chamfer 476.

[0132] The counter-securing section 436 has an extent transversely with respect to the longitudinal direction of the shank 432, which extent is considerably greater than the internal geometry of the cutout 474. It is provided here, in particular, that, in the case of a segment body 442 which is situated in a final mounting position on the carrier 12, the securing bracket 430 can be transferred into the securing position (shown in FIG. 20) only then, by the shank 432 being stretched or expanded radially to the outside by a predefined amount, with the result that it can be brought radially into contact by way of its widened counter-securing section 436 with the securing section 472.

[0133] The elastic deformation and the associated radially inwardly directed elastic restoring force of the securing bracket 430 brings about secure and durable fixing of the segment 440 and the segment body 442 on the carrier 12, at least in relation to the radial direction.