Title:
GEARSHIFT APPARATUS FOR A BICYCLE
Document Type and Number:
WIPO Patent Application WO/2012/008798
Kind Code:
A2
Abstract:
The present invention relates to a gearshift apparatus for a bicycle, and more particularly, to a gearshift apparatus for a bicycle, comprising: a housing; a main body having a drive unit including drive gears and a slave unit including gears, wherein the drive gears and the slave gears are connected to the housing, have different gear ratios, and are arranged in multiple stages to correspond to one another, wherein each drive gear has an insertion portion including a female coupling portion, wherein the main body is connected to a spindle; a connecting member which has a connection portion formed at one side of the main body, and a male coupling portion which is connected to the main body and which corresponds to the female coupling portion of each drive gear; and operating means coupled to the connection portion of the connecting member to place the male coupling portion of the connecting member onto the female coupling portion of a shifting drive gear among the drive gears. Unlike conventional gearshift apparatuses, the connecting member is coupled to any one of the drive gears of the drive unit by a simple horizontal movement of the connecting member connected to the operating means in order to enable transmission, while the drive unit and the slave unit for transmission do not move at all. The present gearshift apparatus prevents overload on a gear and gear shaft, which might occur in conventional gearshift apparatuses in which shifting gears themselves move to achieve transmission, and the present gearshift apparatus is compact, thus reducing the size of the bicycle and equipment weight and size, and simplifying the structures thereof, thus satisfying consumer preferences.
Inventors:
HEO, Yang (#111-902 Daedong Apt, 358 Daebang-dong Seongsan-gu, Changwon-si, Gyeongsangnam-do 642-757, 642-757, KR)
Application Number:
KR2011/005233
Publication Date:
January 19, 2012
Filing Date:
July 15, 2011
Export Citation:
Assignee:
HEO, Yang (#111-902 Daedong Apt, 358 Daebang-dong Seongsan-gu, Changwon-si, Gyeongsangnam-do 642-757, 642-757, KR)
International Classes:
B62M17/00; B62M11/06; B62M25/04
Attorney, Agent or Firm:
KASAN IP & LAW FIRM (6th Fl, Youngpoong Bldg.142 Nonhyun-dong, Gangnam-gu, Seoul 135-822, 135-822, KR)
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Claims: