JPH02115787U - - Google Patents

Info

Publication number
JPH02115787U
JPH02115787U JP2540789U JP2540789U JPH02115787U JP H02115787 U JPH02115787 U JP H02115787U JP 2540789 U JP2540789 U JP 2540789U JP 2540789 U JP2540789 U JP 2540789U JP H02115787 U JPH02115787 U JP H02115787U
Authority
JP
Japan
Prior art keywords
sprocket
diameter sprocket
diameter
crank arm
small
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2540789U
Other languages
Japanese (ja)
Other versions
JP2504838Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989025407U priority Critical patent/JP2504838Y2/en
Priority to US07/488,121 priority patent/US4988328A/en
Priority to EP90104240A priority patent/EP0386685B1/en
Publication of JPH02115787U publication Critical patent/JPH02115787U/ja
Application granted granted Critical
Publication of JP2504838Y2 publication Critical patent/JP2504838Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Gears, Cams (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本願考案の実施例に係るチエンホイー
ルの側面図、第２図は第１図の−線断面図、
第３図は第１図の−線断面図、第４図は従来
例を示した断面図、第５図は大径スプロケツトか
ら小径スプロケツトへのチエンの掛け換え時の状
態を示した模式図である。 １……大径スプロケツト、２……小径スプロケ
ツト、３……クランクアーム、４……チエン押圧
部。 FIG. 1 is a side view of a chain wheel according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1,
Fig. 3 is a cross-sectional view taken along the - line in Fig. 1, Fig. 4 is a cross-sectional view showing a conventional example, and Fig. 5 is a schematic diagram showing the state when changing the chain from a large diameter sprocket to a small diameter sprocket. be. 1... Large diameter sprocket, 2... Small diameter sprocket, 3... Crank arm, 4... Chain pressing part.

Claims (1)

【実用新案登録請求の範囲】 少なくとも１枚の大径スプロケツトと少なくと
も１枚の小径スプロケツトとをもち、クランクア
ームに付与される踏力によつて回転させられる自
転車用多段スプロケツト装置であつて、 上記大径スプロケツトの上記クランクアームと
交差する位置およびこれとスプロケツト軸心を挟
んで対向する位置より回転方向後方の各所定部に
おける小径スプロケツト側側面に、チエン押圧部
を膨出状に設けたことを特徴とする、自転車用多
段スプロケツト装置。[Claims for Utility Model Registration] A multi-stage sprocket device for a bicycle, which has at least one large-diameter sprocket and at least one small-diameter sprocket, and is rotated by pedal force applied to a crank arm. A chain pressing portion is provided in a bulging shape on the side surface of the small-diameter sprocket at each predetermined portion rearward in the rotational direction from a position where the diameter sprocket intersects with the above-mentioned crank arm and a position opposite to this across the sprocket axis. A multi-stage sprocket device for bicycles.
JP1989025407U 1989-03-06 1989-03-06 Multi-stage sprocket device for bicycle Expired - Lifetime JP2504838Y2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1989025407U JP2504838Y2 (en) 1989-03-06 1989-03-06 Multi-stage sprocket device for bicycle
US07/488,121 US4988328A (en) 1989-03-06 1990-03-05 Bicycle multiple chainwheel
EP90104240A EP0386685B1 (en) 1989-03-06 1990-03-06 Bicycle multiple chainwheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989025407U JP2504838Y2 (en) 1989-03-06 1989-03-06 Multi-stage sprocket device for bicycle

Publications (2)

Publication Number Publication Date
JPH02115787U true JPH02115787U (en) 1990-09-17
JP2504838Y2 JP2504838Y2 (en) 1996-07-24

Family

ID=31246117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989025407U Expired - Lifetime JP2504838Y2 (en) 1989-03-06 1989-03-06 Multi-stage sprocket device for bicycle

Country Status (1)

Country Link
JP (1) JP2504838Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10625821B2 (en) 2017-03-17 2020-04-21 Shimano Inc. Bicycle sprocket and bicycle sprocket assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49101437U (en) * 1972-12-21 1974-08-31
JPS5160051U (en) * 1974-11-06 1976-05-12
JPS5418864U (en) * 1977-07-07 1979-02-07

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49101437U (en) * 1972-12-21 1974-08-31
JPS5160051U (en) * 1974-11-06 1976-05-12
JPS5418864U (en) * 1977-07-07 1979-02-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10625821B2 (en) 2017-03-17 2020-04-21 Shimano Inc. Bicycle sprocket and bicycle sprocket assembly

Also Published As

Publication number Publication date
JP2504838Y2 (en) 1996-07-24

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