Spacer for spacing a headset from a stem of a bicycle

Abstract

Spacer for spacing a headset from a stem of a bicycle. The spacer comprises a cable guide, in particular for brake cables and gear shift cables. The cable guide is provided with a cable guide opening and a cable guide wall enclosing the cable guide opening. The cable guide wall is interrupted by a cable insertion gap, allowing lateral insertion of a cable. Optionally, the cable guide comprises cable retaining means for retaining an inserted cable within the cable guide opening.

Claims

1. A spacer for spacing a headset from a stem of a bicycle, the spacer comprising a cable guide with a cable guide opening and a cable guide wall enclosing the cable guide opening, the wall being interrupted by a cable insertion gap.

2. The spacer according to claim 1, further comprising cable retaining means for retaining an inserted cable within the cable guide opening.

3. The spacer according to claim 1, wherein the cable guide wall comprises one or more resilient arms.

4. The spacer according to claim 3, comprising at least two resilient arms with end tips spaced from each other to form the cable insertion gap.

5. The spacer according to claim 3, wherein the resilient arms are symmetrically arranged hook-shaped arms with hooks forming the cable retaining means.

6. The spacer according to claim 5, wherein the end tips of the hook-shaped arms are bent inwardly.

7. The spacer according to claim 3, wherein the resilient arms extend from a tubular section for receiving a steering tube.

8. The spacer according to claim 7, wherein the arms join the tubular section at diametrically opposite sides of the tubular section.

9. The spacer according to claim 7, wherein the arms have an outer surface which is flush with the outer surface of the tubular section.

10. The spacer according to claim 7, wherein the arms diverge.

11. The spacer according to claim 7, wherein the tubular section and the resilient arms are integrally formed as a single part.

12. The spacer according to claim 11, wherein the resilient arms and the tubular section have a substantially even wall thickness, at least in cross section.

13. The spacer according to claim 7, wherein the gap is parallel to the tube axis of the tubular section.

14. The spacer according to claim 13, wherein the spacer has an axial length and a cross section which is the same over the entire axial length.

15. The spacer according to claim 1, wherein the spacer is formed as an extruded profile.

16. The spacer according to claim 1, made of plastic material or a metal.

17. The spacer according to claim 1, having at least two cable guide openings.

18. The spacer according to claim 2, wherein the cable retaining means comprise a texture increasing frictional resistance of an interior surface of the cable guide wall.

19. A vehicle comprising a stem and a headset, wherein the stem is spaced from the headset by a spacer according to claim 1.

20. The spacer according to claim 2, wherein the cable guide wall comprises one or more resilient arms.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1: shows a steering section of a bicycle comprising a spacer according to the invention;

[0021] FIG. 2: shows a bottom view of the steering section of FIG. 1;

[0022] FIG. 3: shows the spacer of FIG. 1 as a separate part in isometric view;

[0023] FIG. 4: shows the spacer of FIG. 3 in top view.

DETAILED DESCRIPTION OF THE INVENTION

[0024] FIGS. 1 and 2 show a steering section 1 of a bicycle comprising a handle bar 2 carrying a pair of brake levers 3, a display 4 and a gear shift control element 5.

[0025] Brake cables 6 run from the respective brake levers 3 to the front and rear brakes (not shown). A cable 7 feeds the display 4. A gear shift cable 8 runs from the gear shift control element 4 to the gear shift mechanism (not shown).

[0026] A stem 11 connects the handle bar 2 to a steering tube 10 (FIG. 2) rotatably received in the head set tube 12. Hence, the stem 11 is coaxial and rotatable relative to the headset tube 12 so as to enable steering motion by turning the handle bar 2.

[0027] A spacer 13 is placed between the stem 11 and the headset tube 12, in order to space the stem 11 from the top end of the head set tube 12 at a desired height. This way, the handle bar 2 can be positioned at a desired level for a bicycle of a specific size.

[0028] The spacer 13 is shown apart in FIG. 3 and in top view in FIG. 4. The spacer 13 comprises a cable guide section 14 and a cylindrical tubular section 15 for receiving the steering tube. The cable guide section 14 and tubular section 15 are integrally formed as a single part. The cable guide section 14 comprises a cable guide opening 16 and a two resilient hook-shaped arms 17 forming a cable guide wall enclosing the cable guide opening 16 and interrupted by a gap 18.

[0029] The two resilient hook-shaped arms 17 are symmetrically arranged and shaped. The hook-shaped arms 17 have root portions 19 joining the tubular section 15 at diametrically opposite sides of the tubular section 15. The root portions 19 have outer surfaces which are flush with the outer surface of the tubular section 15. The other ends of the root portions 19 connect to respective hook portions 21, which are substantially perpendicular to the respective root portions 19. The hook portions 21 of the two resilient hook-shaped arms 17 extend into each other's direction.

[0030] The hook portions 21 of the resilient hook-shaped arms 17 have end tips 22 which are bent inward, so as to point towards the tubular section 15. The bent end tips 22 are spaced from each other to define the gap 18. The bent end tips 22 are free of sharp edges and allow easy insertion of cables. The bent end tips 22 help to prevent unintentional release of the cables from the cable guide section 14.

[0031] In the shown embodiment, the resilient hook-shaped arms 17 diverge at an angle of about 13 degrees. Due to the perpendicular arrangement of the hook portion 21, the bent end tips 22 are also inclined by essentially the same angle, resulting in a slightly narrowing gap 18. The smallest width of the gap 18 is slightly less than the width of a cable to be inserted. Pushing a cable through the gap 18 will gradually push aside the resilient hook-shaped arms 17.

[0032] As shown in FIG. 4, the resilient hook-shaped arms 17 and the tubular section 15 have a substantially even wall thickness in cross section and over the entire length in axial direction. Consequently, the cross section of the spacer 12 is the same over the entire axial length. In this respect, the axial direction is the direction of the cylindrical axis of the tubular section 15. The gap 18 is parallel to the cylindrical axis of the tubular section 15. These features allow production of the spacer 13 by extrusion.

[0033] During assembly of the bicycle, the spacer 13 is positioned between the headset tube 12 and the stem 11 and receives the steering tube. Subsequently, the cables 6, 7 8 are connected to the respective control elements 3, 4, 5. In a next step the cables 6, 7, 8 are pulled through the gap 18 of the cable guide 14 of the spacer 13 and held in the cable guide opening 16.

[0034] The disclosure is not restricted to the above described embodiments which can be varied in a number of ways within the scope of the claims.