BICYCLE REAR WHEEL

Abstract

The present disclosure includes a rear wheel of a bicycle including a tire rim with spokes, a hub axle on which at least one chain drive wheel is rotatably mounted, and a one-way clutch assembly. The one-way clutch assembly includes a flange and a disc placed next to each other, seated coaxially and with a gap. The flange is ball-bearing mounted on the hub axle, and the disc is integrated with the chain drive wheel. In some instances, these elements have side surfaces facing each other and one of the elements: the flange or the disc, has teeth on its side surface, and the other element has on its side surface at least one hook located at a distance from the axis of the hub similar to or the same as the position of the tooth.

Claims

1. A bicycle rear wheel comprising a tire rim with spokes, a hub axle on which at least one chain drive wheel is rotatably mounted, and a one-way clutch assembly, wherein the one-way clutch assembly includes a flange and a disc located next to each other, arranged coaxially and with a gap, the flange being ball bearing mounted on the axle of the hub, and the disc is integrated with the chain drive wheel and these elements have side surfaces facing each other and one of the elements: the flange or the disc, has on its side surface teeth, and the other element has on its side surface at least one hook situated at a distance from the axis of the hub similar to or the same as the position of the tooth.

2. The rear wheel of a bicycle according to claim 1, wherein the other of the elements: the flange or the disc, has on its side surface a plurality of hooks whose location corresponds to the position of the teeth.

3. The rear wheel of a bicycle according to claim 1, wherein the teeth and the hook are arranged along a circle, wherein the radius of the circle on which at least one hook is arranged is in the range: r=R0.5g10 mm+R+0.5g+10 mm, where: R-radius of the circle along which the teeth are arranged, gwidth of the tooth.

4. The rear wheel according to claim 3, wherein the radii of the circles, along which the teeth and the hook are located, are the same.

5. The rear wheel according to claim 1, wherein the flange is a part of the hub body.

6. The rear wheel according to claim 1, wherein the spokes are fixed to the flange.

7. The rear wheel of a bicycle according to claim 1, wherein the hooks are arranged symmetrically in relation to the hub axis.

8. The rear wheel of a bicycle according to claim 1, wherein the hooks are loops.

9. The rear wheel of a bicycle according to claim 8, wherein the hooks are attached rigidly with an initial pressing bend, in order to catch the tooth.

10. The rear wheel of a bicycle according to claim 1, wherein there are at least two hooks to catch one tooth.

11. The rear wheel of a bicycle according to claim 10, wherein the hooks have different lengths and the difference in the length of the extreme hooks is smaller than the distance between successive tips of the teeth.

12. The rear wheel of a bicycle according to claim 1, wherein, characterized in that the tooth on the side opposite to the direction of rotation of the element on which it is located, has a concave side surface and/or the tip of the tooth is shifted towards the bottom of the notch located on the side of the tooth opposite to the direction of rotation of the element on which it is located, and on the side coincident with the direction of rotation of the element it has a convex side surface.

13. The rear wheel of a bicycle according to claim 1, wherein the tooth has a width of not more than 30 mm.

14. The rear wheel of a bicycle according to claim 1, wherein the diameter of the circle along which the teeth and the hook are arranged is not less than 60 mm and not more than 55% of the wheel rim diameter.

15. The rear wheel of a bicycle according to claim 2, wherein the other of the elements: the flange or the disc, has on its side surface a plurality of hooks whose location corresponds to the position of the teeth.

16. The rear wheel of a bicycle according to claim 2, wherein the teeth and the hook are arranged along a circle, wherein the radius of the circle on which at least one hook is arranged is in the range: r=R0.5g mm=R+0.5g+10 mm, where: R-radius of the circle along which the teeth are arranged, g-width of the tooth.

17. The rear wheel according to claim 2, wherein the flange is a part of the hub body.

18. The rear wheel of a bicycle according to claim 2, wherein the diameter of the circle along which the teeth and the hook are arranged is not less than 60 mm and not more than 55% of the wheel rim diameter.

19. The rear wheel of a bicycle according to claim 2, wherein the tooth on the side opposite to the direction of rotation of the element on which it is located, has a concave side surface and/or the tip of the tooth is shifted towards the bottom of the notch located on the side of the tooth opposite to the direction of rotation of the element on which it is located, and on the side coincident with the direction of rotation of the element it has a convex side surface.

20. The rear wheel of a bicycle according to claim 2, wherein the diameter of the circle along which the teeth and the hook are arranged is not less than 60 mm and not more than 55% of the wheel rim diameter.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0025] The subject of the invention is presented in exemplary embodiments in the drawing, where:

[0026] FIG. 1 schematically shows the rear wheel of a bicycle;

[0027] FIG. 2 schematically shows a cross-section of the wheel in the variant with teeth on the flange;

[0028] FIG. 3 schematically shows a side view of the flange surface with teeth arranged along a circle;

[0029] FIG. 4 schematically shows a side view of the disc surface with hooks arranged along a circle;

[0030] FIG. 5 shows schematically an enlarged view of the tooth structure, looking in the direction of the arrow A indicated in FIG. 3 and FIG. 8;

[0031] FIG. 6 schematically shows a cross-section of the wheel in the variant with teeth on the disc;

[0032] FIG. 7 schematically shows a side view of the flange surface with hooks arranged along a circle;

[0033] FIG. 8 schematically shows a side view of the disc surface with teeth arranged along a circle;

[0034] FIG. 9 schematically shows a side view of the variant with a plurality of hooks for catching one tooth;

[0035] FIG. 10 schematically shows a way of catching one tooth by the multiple hook;

[0036] FIG. 11 schematically shows a side view of one of the elements' surface: a flange or a disc with teeth arranged in other way than along a circle;

[0037] FIG. 12 schematically shows a side view of the other element's surface: a flange or a disc with hooks arranged in other way than along a circle;

[0038] FIG. 13 schematically shows a cross-section B-B, as indicated in FIG. 11, of a flange or a disc with teeth arranged in other way than along a circle.

DESCRIPTION OF EMBODIMENTS

Example 1

[0039] The rear wheel of the bicycle is constructed, as shown in FIG. 1, of the tire rim 1 with spokes 2, the axle 3 of the hub. On the axle 3 of the hub, the following parts are rotatably ball-bearing mounted: the body 4 of the hub and the cassette 5 with the chain drive wheels 6. The wheel includes the one-way clutch assembly 71, shown in FIG. 2-FIG. 4, which consists of arranged side-by-side, coaxially seated with the gap 8 between them: the flange 9 and the disc 10. The flange 9 is ball-bearing mounted on the axle 3 of the hub, and the disc 10 is integrated with the largest chain drive wheel 6. The elements 9 and 10 have respective side surfaces 91 and 101 facing each other. In this exemplary embodiment, the flange 9 has the teeth 11 on its side surface 91, while the disc 10 has a plurality of hooks 12 on its side surface 101. The hooks 12 are in the form of loops. The teeth 11 and the hooks 12 are arranged along a circle with the same radius, R=r. The flange 9 is part of the hub body 4. The spokes 2 are fixed to the flange 4. The hooks 12 are arranged symmetrically with respect to the axis 3 of the hub. The hooks 12 in the form of loops are fixed rigidly with an initial pressing bend, in order to catch the tooth 11. The tooth 11, as shown in FIG. 5 has a concave side surface 13 on the side opposite to the direction of rotation of the flange 9 and the tip A of the tooth 11 is shifted towards the bottom of the notch 14 located on the side of the tooth 11 opposite to the direction of rotation of the flange 9. On the side coincident with the direction of rotation of the flange 9, the tooth 11 has a convex side surface 13. The tooth 11 has a width g=9 mm. The diameter of the circle on which: the teeth 11 and the hook 12 are arranged, is in the range of 60 mm=55% of the diameter of the wheel im.

Example 2

[0040] The wheel is made as in example 1 except that in the one-way clutch assembly 72 shown in FIG. 6-FIG. 8, the flange 9 has a plurality of hooks 12 on its side surface 91, and the disc 10 has teeth 11 on its side surface 101. The tooth 11 on the side opposite to the direction of rotation of the disc 10 has a concave side surface 13 and the tip A of the tooth 11 is shifted towards the bottom of the notch 14 located on the side of the tooth 11 opposite to the direction of rotation of the disc 10. On the side coincident with the direction of rotation of the disc 10, the tooth 11 has a convex side surface 13.

Example 3

[0041] The wheel is made as in example 1 or 2, except that on the side surface 91 or 101 of the flange 9 or the disc 10, respectively, there are three hooks 12 for catching one tooth 11. The hooks 12 have different lengths, and the difference in the length of the extreme hooks 11 is less than the distance between successive tips A of the teeth 11-FIG. 9, FIG. 10.

Example 4

[0042] The wheel is made as in example 1 or 2, except that on the side surface 91 or 101 of the flange 9 or the disc 10, respectively, there are teeth 11, and on the side surface 91 or 101 of the second element of the clutch assembly 71, 72, there are hooks 12. The teeth 11 are located at different distances from the axis 3 of the hub. At the same distances from the axis 3 of the hub as the location of each of the teeth 11, the hooks 12 are located-FIG. 11, FIG. 12. The hooks 12 are arranged with an angular shift, so that in a given position of the elements: the flange 9 and the disc 10 rotating relative to each other, catching of another tooth 11 by the hook 12 is possible.

TABLE-US-00001 List of elements: 1 rim 2 spokes 3 hub axle 4 hub body 5 cassette 6 drive chain wheel 71 one-way clutch assembly variant 1 72 one-way clutch assembly variant 2 8 gap 9 flange 91 side surface of the flange 10 disc 101 side surface of the disc 11 tooth 12 hook 13 lateral surface of the tooth 14 bottom of the notch A tip of the tooth g width of the tooth R the radius of the circle on which the teeth are located r the radius of the circle on which the hook is located