JPH0632287U - Bicycle hub - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a bicycle hub that can be easily assembled. [Structure] Tapered surfaces 21 and 2 are provided at both ends of the hub shell 20.
2 is provided, and the shaft 10 and the shaft 1 are provided in the hub shell 20.
The bearings 16 and 17 which contact 0 are arranged. A tube 30 having a cone 31 at one end is provided in contact with the bearings 16 and 17, and the cone 31 has a tapered surface 32 in contact with the tapered surface 22 of the hub shell 20.
A cap 35 is screwed onto the other end of the tube 30, and a tapered surface 37 that contacts the other tapered surface 21 of the hub shell 20 is provided on the outer periphery of the cap 35. With this configuration, the hub shell 20 is fixed between the cone 31 and the cap 35.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle hub.

[0002]

[Prior art]

 Generally, the hub has a pair of dust caps mounted on the ends of its shaft, the dust caps threaded onto the ends of the bicycle hub shell.

[0003]

[Problems to be solved by the device]

 However, when one of the dust caps is screwed onto the end of the hub shell, its axis does not exactly match the axis of the hub shell, and therefore the other dust cap cannot be easily screwed into its proper position. , It becomes difficult to assemble the hub.

An object of the present invention is to provide a bicycle hub that can be easily assembled.

[0005]

[Means for Solving the Problems]

 A bicycle hub according to the present invention comprises a hub shell having a first tapered surface formed at one end and a second tapered surface formed at the other end, and a pair of annular ribs rotatably provided in the hub shell. Having a shaft, a track formed on one side of each of the annular ribs, a bearing contacting each track, and both ends contacting each bearing, and integrally formed at a first end thereof. A tube having a cone having a third tapered surface in contact with the first tapered surface of the hub shell on an outer peripheral portion and an outer threaded portion formed at a second end portion thereof, and an outer threaded portion of the tube. A cap having an inner threaded portion to be screwed therein and having a fourth tapered surface in contact with the second tapered surface of the hub shell on an outer peripheral portion, and the second tapered surface of the hub shell and the front. Comprising a Shiruri ring, provided between said fourth tapered surface of the cap, the hub shell is characterized in that it is secured by the said and the cone cap.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view of a bicycle hub according to an embodiment of the present invention. 2 is an exploded perspective view of the bicycle hub of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. As shown in FIG. 1, the hub of the present embodiment has a shaft 10 rotatably provided in a hub shell 20, and the hub shell 20 has a taper provided at each end as shown in FIG. It has surfaces 21 and 22. As shown in FIG. 2, the shaft 10 has annular ribs 11 and 14, and the ribs 11 and 14 have annular tracks 12 and 15 formed on the sides for contacting the bearings 16 and 17, respectively. There is.

As shown in FIG. 3, the tube 30 is located between the shaft 10 and the hub shell 20 and has two ends that are in contact with the bearings 16 and 17, respectively. The tube 30 has a cone 31 integrally formed at one end thereof and an external thread portion 33 formed on the outer peripheral surface at the other end. The cone 31 has a tapered surface 32 formed on its outer peripheral portion for contacting the tapered surface 22 of the hub shell 20. The cap 35 has an inner thread portion 36 for screwing into the outer thread portion 33 of the tube 30, and a taper surface 37 for contacting the taper surface 21 of the hub shell 20 on its outer peripheral surface. . The seal ring 38 is provided between the hub shell 20 and the tapered surfaces 21 and 37 of the cap 35.

At the time of assembly, the hub 35 is stably fixed between the cone 31 and the cap 35 simply by screwing the cap 35 onto the outer threaded portion 33 of the tube 30. As described above, according to the bicycle hub of this embodiment, the hub can be easily assembled.

[0009]

[Effect of device]

 When assembling the bicycle hub according to the present invention, the hub shell can be stably fixed between the cone and the cap by simply screwing the cap onto the outer threaded portion of the tube. Therefore, the bicycle hub of the present invention can be easily assembled.

[Brief description of drawings]

FIG. 1 is a perspective view of a bicycle hub according to an embodiment of the present invention.

2 is an exploded perspective view of the bicycle hub of FIG. 1. FIG.

3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 10 ... Shaft 11, 14 ... Rib 12, 15 ... Annular track 16, 17 ... Bearing 20 ... Hub shell 21 ... Tapered surface (second taper surface) 22 ... Tapered surface (first taper surface) 30 ... Tube 31 ... Cone 32 ... Taper surface (third taper surface) 33 ... External screw portion 35 ... Cap 36 ... Inner screw portion 37 ... Tapered surface (fourth taper surface) 38 ... Seal ring

Claims (1)

[Scope of utility model registration request] 1. A hub shell having a first taper surface formed at one end and a second taper surface formed at the other end; a shaft having a pair of annular ribs rotatably provided in the hub shell; A track formed on one side of each of the annular ribs, a bearing in contact with each track, and both ends in contact with each bearing, the hub shell being integrally formed at a first end of the hub shell at an outer peripheral portion thereof. A cone having a third taper surface in contact with the first taper surface and an outer threaded part formed at a second end of the cone, and an inner threaded part screwed into the outer threaded part of the tube. And a cap having a fourth tapered surface on the outer peripheral portion that is in contact with the second tapered surface of the hub shell, and the second tapered surface of the hub shell and the first tapered surface of the cap. 4 is a seal ring provided between the hub shell and the tapered surface, and the hub shell is fixed by the cone and the cap.