GB2289507A - Compounded anti-impact free-wheel set of bicycle has multiple freewheel sets - Google Patents

Compounded anti-impact free-wheel set of bicycle has multiple freewheel sets Download PDF

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Publication number
GB2289507A
GB2289507A GB9410024A GB9410024A GB2289507A GB 2289507 A GB2289507 A GB 2289507A GB 9410024 A GB9410024 A GB 9410024A GB 9410024 A GB9410024 A GB 9410024A GB 2289507 A GB2289507 A GB 2289507A
Authority
GB
United Kingdom
Prior art keywords
free wheel
wheel set
free
impact
sleeve
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.)
Withdrawn
Application number
GB9410024A
Other versions
GB9410024D0 (en
Inventor
Kinka Hsieh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to GB9410024A priority Critical patent/GB2289507A/en
Priority to FR9406454A priority patent/FR2720367B1/en
Priority to NL9400900A priority patent/NL9400900A/en
Publication of GB9410024D0 publication Critical patent/GB9410024D0/en
Publication of GB2289507A publication Critical patent/GB2289507A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like

Abstract

A compound anti-impact free-wheel set is made up of a plurality of combined free wheels 31 which are fastened together by means of male and female threaded portions 321 and 332 so as to ensure that the combined free wheels 31 of the compounded free wheel are aligned with precision. The outermost free wheel set 33 is provided at the axle portion thereof with a sleeve 331 having a slot 333 dimensioned to receive therein a roll bearing 334 for reinforcing the support of the free wheels. <IMAGE>

Description

COMPOUNDED ANTI-IMPACT FREE WHEEL SET OF BICYCLE The present invention relates generally to a free wheel set, and more particularly to a compounded free wheel set caPable of against an impact force.
The speed-changing device of a conventional bicycle is generally provided with a plurality of free wheels which are of various sizes and are mounted on the thread side of the rear hub in such a manner that each of the free wheels can be driven by the wheel chain of the bicycle. As shown in FIG.
1, a free wheel set 10 of the prior art is fastened directly to one end of a hub 11 such that the free wheel set 10 is mounted on an extension tube 13 coupled at one end of the hub 11. Thereafter, the rear fork tip 12 of the bicycle frame is fastened at both ends of the axle 14 of the hub. Such a free wheel set 10 as described above is defective in design in that the overall operating efficiency and precision of the free wheel set 10 can be undermined by the defect of any a piece of free wheel of the free wheel set 10, and that the axle 14 is vulnerable to a deformation caused by the severe vibration of the free wheel set 10 at such time when the free wheel set 10 is driven strenuously by the wheel chain. As shown in FIG.1, the outer portion of the free wheel set 10 is not firmly supported by the extension tube 13 and the axle 14. In addition, only both ends of the rear hub 11 are well suPPorted by the bearings (or ball retainer) 15; nevertheless there is a lack of anu support in a portion of the axle between the bearings (or ball retainer) 15 and the rear fork tip 12. As illustrated in FIG.2, the length a of the portion between the bearings (or ball retainer) 15 and the rear fork tip 12 is so long that the free wheel set 10 is susceptible to vibrating and bending at the time when the free wheel set 10 is driven by the wheel chain, thereby causing the axle 14 to bend to undermine the transmission of the driving force.
It is therefore the Primary objective of the present invention to provide a compounded anti-impact free wheel set with a sleeve having a slot dimensioned to receive therein a roll bearing for reinforcing the support of the free wheels mounted on the outer end of the axle. The roll bearing also serves to against the impact so as to enable the compounded free wheel to rotate stably and securely but swaying.
It is another objective of the present invention to provide a comPounded anti-impact free wheel set made up of a plurality of combining free wheels which are fastened together by means of male and female threads so as to ensure that the combining free wheels of the comPounded free wheel set of the present invention are aligned with precision.
In keeping with the principle of the Present invention, the foregoing objectives of the present invention are attained by an anti-impact compunded free wheel set of bicycle, which comprises mainly a hub and a predetermined number of combining free wheels mounted securely on the hub to function collecively as a speed-changing device.
The comPounded free wheel set of the present invention is characterized in that it is made up of a plurality of free wheel units, with one of the free wheel units being fastened to one side of the hub and with the rest of the free wheel units being fastened together by means of male and female threads in conjunction with a sleeve having a slot dimensioned to receive therein securely a roll bearing for reinforcing the support of the outermost free wheel unit.
The foregoing objectives, features and advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention in conjunction with the accomPanYing drawings.
FIG.1 is a sectional view taken along the direction of the axis of the conventional free wheel set of the prior art.
FIG.2 is a schematic view illustrating the distribution of the force supporting the axle of the bicycle free sheel set of the prior art.
FIG.3 shows an exPloded view of a compounded anti-impact free wheel set of the present invention.
FIG.4 is a sectional view taken along the direction of the axis of the compounded anti-impact free wheel set of the present invention.
FIG.5 is a schematic view illustrating the distribution of the force suPPorting the axle of the compounded anti-impact free wheel set of the present invention.
FIG.6 is another exploded view of a compounded free wheel set of another Preferred embodiment of the present invention.
Referring to FIGS.3 and 4, a compounded anti-impact free wheel set of the present invention is shown comprising mainly a hub 2 and a predetermined number of free wheels 31.
The hub 2 is mounted on an axle 4 by means of bearings 21 and 22. The hub 2 is similar in construction to the prior art hub and will not be therefore described further here.
The compounded anti-impact free wheel set 31 of the present invention are similar to the free wheel set of the prior art in that the free wheels 31 are provided with ratchet gears (not shown in the drawings) which enable the free wheels 31 to turn unidirectionally. In this embodiment of the present invention, the compounded anti-impact free wheel set 31 are grouped into two free wheel sets 32 and 33. The free wheel set 32 is provided at one end thereof with a male threaded portion 321. The axle portion of another free wheel set 33 is provided with a sleeve 331 to which the free wheels 31 are fastened. The sleeve 331 is provided at one end thereof with a female threaded portion 332 engageable with the male threaded portion 321 of the free wheel set 32. In combination, the free wheel set 32 is fastened to one end of the hub 2 before the female threaded portion 332 of the free wheel set 33 is allowed to engage the male threaded portion 321 of the free wheel set 33. As a result, all free wheel sets 31 are aligned with precision.
In addition, the second free wheel set 33, which is disposed at the outermost location is provided at the axle portion thereof with a sleeve 331 having a slot 333 dimensioned to receive therein a roll bearing 334 for reinforcing the support of the second free wheel set 33 by the axle 4. The supporting point of the axle 4 is therefore extended out to the Place where the roll bearing 334 is located. The distance b between the end of the axle 4 and the rear fork tip 5 of the bicycle frame is shortened substantially as compared with the prior art, thereby protecting the axle 4 from being bent. The free wheel sets 32 and 33 can be turned stably and smoothly but swaying, thanks to the support of the roll bearing 334.
Furthermore, as shown in FIG.6, the surface 51 of one end of the sleeve 5 can be made with a recessed-protruded shaPe as to be fitted into the recessed-protruded portion 335 of the free wheel set 33, and it is preferable to remain the other end of the sleeve 5 to be threaded.

Claims (3)

1.A compounded anti-impact free wheel set comprising: a hub mounted on an axle by means of a set of roll bearings; and a predetermined number of free wheels, which are mounted in groups on one side of said hub as speed changing means; wherein said free wheels are grouPed into a plurality of free wheel sets, one of which is fastened to one side of said hub before the rest of said free wheel sets are fastened together by a male threaded portion thereof and a female threaded portion thereof in conjunction with a sleeve; and wherein an outermost free wheel set is provided at the axle portion thereof with a sleeve having a slot dimensioned to receive therein a roll bearing for reinforcing the support of said free wheel sets.
2.The comPounded anti-impact free wheel set of claim 1 wherein the surface of one end of aaid sleeve can be made with a recessed-protruded shaPe as to be fitted into the recessed-protruded portion of said free wheel set, and it is preferable to remain the other end of said sleeve to be threaded.
3.The compounded anti-impact free wheel set of bicycle substantially as herein before described with reference to the accompanying drawings.
GB9410024A 1994-05-19 1994-05-19 Compounded anti-impact free-wheel set of bicycle has multiple freewheel sets Withdrawn GB2289507A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9410024A GB2289507A (en) 1994-05-19 1994-05-19 Compounded anti-impact free-wheel set of bicycle has multiple freewheel sets
FR9406454A FR2720367B1 (en) 1994-05-19 1994-05-27 Impact resistant compound freewheel device for bicycles.
NL9400900A NL9400900A (en) 1994-05-19 1994-06-02 Composite impact-resistant sprocket set for a bicycle.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9410024A GB2289507A (en) 1994-05-19 1994-05-19 Compounded anti-impact free-wheel set of bicycle has multiple freewheel sets
FR9406454A FR2720367B1 (en) 1994-05-19 1994-05-27 Impact resistant compound freewheel device for bicycles.
NL9400900A NL9400900A (en) 1994-05-19 1994-06-02 Composite impact-resistant sprocket set for a bicycle.

Publications (2)

Publication Number Publication Date
GB9410024D0 GB9410024D0 (en) 1994-07-06
GB2289507A true GB2289507A (en) 1995-11-22

Family

ID=27252923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9410024A Withdrawn GB2289507A (en) 1994-05-19 1994-05-19 Compounded anti-impact free-wheel set of bicycle has multiple freewheel sets

Country Status (3)

Country Link
FR (1) FR2720367B1 (en)
GB (1) GB2289507A (en)
NL (1) NL9400900A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6039665A (en) * 1996-12-20 2000-03-21 Shimano, Inc. Multiple sprocket assembly for a bicycle
DE102011103489A1 (en) * 2011-06-03 2012-12-06 Sram Deutschland Gmbh Multiple sprocket assembly for a bicycle transmission and rear wheel axle assembly with such a multiple sprocket assembly
EP2594472A1 (en) * 2011-11-18 2013-05-22 Chang Hui Lin Ratchet structure of a freewheel and a hub
US11351815B2 (en) 2017-08-21 2022-06-07 The Hive Global, Inc. Bicycle cassette with clamping connection
US11485449B2 (en) 2015-09-01 2022-11-01 The Hive Global, Inc. Bicycle cassette with locking connection
US11932351B2 (en) 2020-07-17 2024-03-19 The Hive Global, Inc. Conical bicycle cassette sprocket structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264337A (en) * 1992-02-15 1993-08-25 Kenneth William James Rear hub assembly for a bicycle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR52664E (en) * 1942-11-23 1945-05-16 Bourrin Freres Soc New arrangement of a single or double row rigid ball bearing combined with a thrust ball bearing in freewheels of bicycles or the like
FR1012254A (en) * 1950-02-09 1952-07-08 Bourrin Freres Soc Staged gear freewheel with ball bearing and smooth seat bearing
FR2423678A1 (en) * 1978-04-20 1979-11-16 Bes Francis INSTANTLY INTERCHANGEABLE FREEWHEEL

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264337A (en) * 1992-02-15 1993-08-25 Kenneth William James Rear hub assembly for a bicycle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6176798B1 (en) 1996-11-21 2001-01-23 Shimano, Inc Multiple sprocket assembly for a bicycle
US6039665A (en) * 1996-12-20 2000-03-21 Shimano, Inc. Multiple sprocket assembly for a bicycle
DE102011103489A1 (en) * 2011-06-03 2012-12-06 Sram Deutschland Gmbh Multiple sprocket assembly for a bicycle transmission and rear wheel axle assembly with such a multiple sprocket assembly
US9415834B2 (en) 2011-06-03 2016-08-16 Sram Deutschland Gmbh Multiple sprocket assembly for a bicycle gearing as well as rear axle arrangement with a multiple sprocket assembly of this type
EP2594472A1 (en) * 2011-11-18 2013-05-22 Chang Hui Lin Ratchet structure of a freewheel and a hub
US11485449B2 (en) 2015-09-01 2022-11-01 The Hive Global, Inc. Bicycle cassette with locking connection
US11351815B2 (en) 2017-08-21 2022-06-07 The Hive Global, Inc. Bicycle cassette with clamping connection
US11932351B2 (en) 2020-07-17 2024-03-19 The Hive Global, Inc. Conical bicycle cassette sprocket structure

Also Published As

Publication number Publication date
NL9400900A (en) 1996-01-02
GB9410024D0 (en) 1994-07-06
FR2720367A1 (en) 1995-12-01
FR2720367B1 (en) 1996-08-02

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)