JPH0382693U

JPH0382693U -

Info

Publication number: JPH0382693U
Application number: JP14380089U
Authority: JP
Priority date: 1989-12-12
Filing date: 1989-12-12
Publication date: 1991-08-22

Description

[Brief explanation of drawings]

第１図は、本願考案の実施例を示す縦断面図、
第２図は第１図の要部拡大図、第３図は従来例を
示す縦断面図である。１……ハブ体、５……第一ベアリング部、７…
…第二ベアリング部、８……ラチエツト機構、９
……ギヤ支持体、１０……第三ベアリング部、１
１……ハブ軸、１５……軸受筒、１８……第一玉
受け外面、２１……第二玉受け外面、２２……第
三玉受け外面、２３……第一玉受け内面、２４…
…第二玉受け内面、２７，２８，３３……転動体
、２９……玉押し、３２……第三玉受け内面。 FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention;
FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a vertical sectional view showing a conventional example. 1...Hub body, 5...First bearing part, 7...
...Second bearing part, 8...Ratchet mechanism, 9
... Gear support body, 10 ... Third bearing part, 1
DESCRIPTION OF SYMBOLS 1... Hub axle, 15... Bearing cylinder, 18... First ball receiver outer surface, 21... Second ball receiver outer surface, 22... Third ball receiver outer surface, 23... First ball receiver inner surface, 24...
...Second ball receiver inner surface, 27, 28, 33...Rolling element, 29...Ball pusher, 32...Third ball receiver inner surface.

Claims

[Claims for Utility Model Registration] On the outer periphery of the bearing sleeve formed at the right end of the hub body,
The gear support is connected to the gear support via a pair of inner and outer bearing parts located apart in the axial direction, consisting of an inner first bearing part and an outer second bearing part, and a ratchet mechanism located in the middle of these bearing parts. In the bicycle unit hub, the bicycle unit hub is rotatably supported in only one direction, and the bearing sleeve is rotatably supported with respect to the hub axle via a third bearing provided at the outer end thereof, The bearing sleeve is formed by screwing onto the inner periphery of the right end of the hub body, and the first bearing portion has a first ball bearing outer surface formed on the outer periphery of the right end of the hub body and an inner periphery of the gear support body. The second bearing part is composed of a first ball bearing inner surface formed on the periphery and a rolling element interposed between these two ball bearing surfaces, and the second bearing part is composed of a second ball bearing formed on the outer periphery of the intermediate part of the bearing tube. The third bearing part is composed of an outer surface, a second ball bearing inner surface formed on the inner periphery of the outer end of the gear support, and a rolling element interposed between these ball bearing surfaces. A third ball receiving outer surface formed on the outer periphery of the end portion, a third ball receiving inner surface formed on the inner inner periphery of the ball pusher screwed to the hub shaft, and a rolling element interposed in both of these ball receiving surfaces. A unit hub for a bicycle, characterized by being composed of.