Abstract
A spoke star is made of a fiber-reinforced plastic and formed as a star-shaped closed ring, the spoke star having spokes between a hub-side inner circumference of the spoke star and a rim-side outer circumference of the spoke star, a single fiber bundle running repeatedly in the spoke star between the inner circumference and the outer circumference along spokes of the spoke star. The spokes may be formed as double spokes, the spokes having a loop at the rim-side outer circumference of the spoke star. The loops allow for a better load transfer to the spoke star.
Claims
1. A spoke star (1) made of a fiber-reinforced plastic and formed as a star-shaped closed ring, wherein the spoke star (1) comprises at least two spokes (2) between a hub-side inner circumference of the spoke star and a rim-side outer circumference of the spoke star, wherein a single fiber bundle runs repeatedly in the spoke star between the inner circumference and the outer circumference along spokes (2) of the spoke star, wherein the spokes (2) are formed as double spokes, wherein the two spokes (2) of the double spokes are connected by a plastic matrix and the spoke arrangement within the spoke star (1) mimic that of conventional wheels with steel spokes, wherein the spokes (2) on the rim-side outer circumference of the spoke star have a loop (3) and the spokes (2) on the hub-side inner circumference of the spoke star have a loop.
2. The spoke star (1) according to claim 1, wherein at least one spoke (2) comprises a fastening means (4) on the loop (3) thereof.
3. The spoke star (1) according to claim 2, wherein the fastening means (4) is interlockingly connectable to the loop (3).
4. The spoke star (1) according to claim 2, wherein the fastening means (4) is fixable to a wheel rim (6) by way of a screw (5).
5. The spoke star (1) according to claim 4, wherein the screw (5) aligns with the spoke (2).
6. A spoked wheel having a hub (7), a wheel rim (6) and a plurality of spokes (2) between the hub (7) and the wheel rim (6), wherein the spoked wheel comprises at least one spoke star (1) according to claim 1.
Description
[0047] The figures show exemplary embodiments of the invention.
[0048] In the drawing:
[0049] FIG. 1 shows a side view of an individual spoke star according to the invention,
[0050] FIG. 2 shows a side view of an arrangement of two spoke stars according to the invention from FIG. 1,
[0051] FIG. 3 shows a top view of a pair of the arrangement from FIG. 2,
[0052] FIG. 4 shows a side view of the rim-side outer circumference of the spoke star according to the invention,
[0053] FIG. 5 shows a side view of the hub-side inner circumference of the arrangement from FIG. 2 with a hub,
[0054] FIG. 6 shows a side view of the hub-side inner circumference of the spoke star from FIG. 1 with a hub,
[0055] FIG. 7 shows a perspective view of the rim-side outer circumference of the spoke star according to the invention with fastening means,
[0056] FIG. 8 shows a side view of the rim-side outer circumference of the spoke star with fastening means from FIG. 7,
[0057] FIG. 9 shows a side view of the rim-side outer circumference of the spoke star with fastening means from FIG. 7, mounted on a wheel rim,
[0058] FIG. 10 shows a side view of a hub according to the invention,
[0059] FIGS. 11, 11a and 11b show perspective views of a hub according to the invention before securing the spoke star, with a first mounted spoke star and with a second mounted spoke star.
[0060] FIGS. 1 to 3 show schematic views of an embodiment of the spoke star 1 according to the invention. FIG. 1 shows an individual spoke star 1. FIG. 2 shows an arrangement of two spoke stars 1 from FIG. 1. The spoke stars 1 are turned through 180? C. relative to one another. The arrangement can form one side of a spoked wheel. FIG. 3 shows two arrangements from FIG. 2. The two arrangements are turned slightly relative to one another and form the two sides of the spokes of a spoked wheel.
[0061] The spoke star 1 consists of a fiber-reinforced plastic material. The spoke star 1 has spokes 2 between a hub-side inner circumference of the spoke star and a rim-side outer circumference of the spoke star. In the spoke star 1, a single fiber bundle runs repeatedly between the inner circumference and the outer circumference along spokes 2 of the spoke star. The spokes 2 are formed as double spokes. A double spoke is formed by two spokes 2 running in parallel. The spokes 2 run approximately in parallel from the hub-side inner circumference of the spoke star to the rim-side outer circumference of the spoke star. The spokes 2 have a loop 3 on the rim-side outer circumference of the spoke star. The fiber orientation is reversed through 180? by the loop 3 on the rim-side outer circumference of the spoke star. In the two spokes 2 of the double spoke, the fibers run substantially in parallel and in opposite directions. On the hub-side inner circumference of the spoke star, loops are provided for the interlocking connection of the spoke star to a hub 7.
[0062] FIG. 4 shows a detailed view of the rim-side outer circumference of a spoke star 1 according to the invention. The double spokes 2 have a loop 3 on the rim-side outer circumference of the spoke star. The fiber orientation is reversed through 180? by the loop 3 on the rim-side outer circumference of the spoke star. In the two spokes 2 of the double spoke, the fibers run substantially in parallel and in opposite directions. By reason of the embodiment of the rim-side outer circumference of the spoke star as loops, the loops 3 have half the diameter of the double spokes 2.
[0063] FIG. 5 shows a detailed view of the hub-side inner circumference of the arrangement from FIG. 2. The spoke star can be interlockingly connected to a hub 7 by way of the loops on the hub-side inner circumference of the spoke star.
[0064] FIG. 6 shows a detailed view of the hub-side inner circumference of the individual spoke star 1 from FIG. 1. The spoke star can be interlockingly connected to a hub 7 by way of the loops on the hub-side inner circumference of the spoke star.
[0065] FIGS. 7 and 8 show a schematic representation of a spoke star 1 according to the invention with fastening means 4. The fastening means 4 is inserted into the loop 3 located on the rim-side outer circumference of the spoke star. The fastening means 4 is interlockingly connected to the spoke star 1 in this way. The fastening means 4 can be connected to a wheel rim 6 using a screw 5. As can be seen in FIG. 8, the loop 3 is slightly bent out of the plane. In this way, in the assembled state of the spoke star 1, the loop 3 can additionally be secured in the fastening means 4 in an interlocking manner by a screw 5. The screw 5 advantageously prevents the loop 3 from popping out of the fastening means 4.
[0066] FIG. 9 shows a representation of the spoke star 1 with fastening means 4 from FIGS. 7 and 8 mounted on a wheel rim 6. The fastening means 4 is fastened to the wheel rim 6 with a screw 5. By forming an interlocking connection, the screw 5 additionally prevents the loop 3 from popping out of the fastening means 4. The screw 5 aligns with the double spoke 2.
[0067] FIGS. 10 and 11 schematically illustrate an embodiment of a hub 7 of a spoked wheel with a spoke star 1 according to the invention. The hub 7 has bolts 8 for interlockingly connecting the spoke star 1 to the hub 7, in which the loops 3 of the spoke star 1 engage.
[0068] In the assembled state, the bolts 8 engage in loops on the hub-side inner circumference of the spoke star 1. FIGS. 11a and 11b show how, firstly, a first spoke star 1 is fastened on the hub-side inner circumference of the spoke star 1 by engagement of the bolts 8 in loops 3, followed byoffset by 180?a second spoke star 2.
