US20030022748A1 - Device for closing a chain, particularly a bicycle chain - Google Patents

Device for closing a chain, particularly a bicycle chain Download PDF

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Publication number
US20030022748A1
US20030022748A1 US10/193,008 US19300802A US2003022748A1 US 20030022748 A1 US20030022748 A1 US 20030022748A1 US 19300802 A US19300802 A US 19300802A US 2003022748 A1 US2003022748 A1 US 2003022748A1
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US
United States
Prior art keywords
chain
pair
plates
holes
rivets
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.)
Abandoned
Application number
US10/193,008
Inventor
Mario Meggiolan
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.)
Campagnolo SRL
Original Assignee
Campagnolo SRL
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 Campagnolo SRL filed Critical Campagnolo SRL
Assigned to CAMPAGNOLO SRL reassignment CAMPAGNOLO SRL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEGGIOLAN, MARIO
Publication of US20030022748A1 publication Critical patent/US20030022748A1/en
Priority to US10/888,188 priority Critical patent/US6966170B2/en
Priority to US11/285,023 priority patent/US7131258B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21L—MAKING METAL CHAINS
    • B21L9/00—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains
    • B21L9/02—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains of roller-chain or other plate-link type
    • B21L9/06—Sorting, feeding, assembling, riveting, or finishing parts of chains
    • B21L9/065—Assembling or disassembling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links

Definitions

  • This invention relates to a device for closing a chain, particularly a bicycle chain.
  • closing referred to a chain indicates the reciprocal connections of the two ends of the chain.
  • a bicycle chain consists of a set of links, each of which comprises a pair of outer plates, a pair of inner plates and a rivet inserted in aligned holes in the inner plates and in the outer plates.
  • the ends of the rivet are flushed after inserting the rivet in the aligned holes of the outer plates and the inner plates, so to form retainer portions, which diameter is larger than the diameter of the holes in the outer plates.
  • the flushed portions of the rivet prevent the rivet from slipping out in the direction of its axis.
  • bicycle chains are supplied “open” and the two ends of the chain are connected after the chain has been arranged around the chain wheels and the sprockets on the bicycle.
  • its length must be adjusted by removing a certain number of links. This is done by removing a rivet. Further, the length of the chain must be also adjusted when the bicycle gears and/or sprockets are replaced.
  • the main problem of known solutions consists in that the holes of the outer plates are damaged when a rivet is removed to adjust the chain length, especially when the ends of the rivets of the chain present a high interference in the radial direction with the holes of the outer plates.
  • the closing point of a chain is critical in terms of resistance due to the damaged outer plate holes.
  • the present invention concerns devices for bringing the ends of a chain, especially bicycle chains, together to form the transmission chains normally associated with power transfer in pedal driven vehicles.
  • FIGS. 1, 2 and 3 illustrate the assembly sequence of a device for closing a chain according to a first form of embodiment of this invention
  • FIGS. 4 and 5 illustrate the assembly sequence of an alternative embodiment of a device according to this invention
  • FIGS. 6 and 7 are enlarged details of the respective encircled portions of FIG. 5.
  • closure refers to being the free ends of the chain into a desired position and using a device to connection them endless.
  • numerals 7 and 12 respectively indicate two ends of a bicycle chain.
  • Numeral 14 indicates a chain closing device according to this invention, which is used to reciprocally connect the two ends 10 , 12 .
  • the chain comprises a set of chain link of the known type.
  • Each link comprises a pair of outer plates 16 and a pair of inner plates 18 .
  • Each outer plate 16 has two holes 20 , 22 and each inner plate 18 has two holes 24 , 26 , preferably provided with flushed portions forming respective bushings.
  • Each pair of inner plates 18 is connected to two rollers 28 fitted to turn on the bushings aligned with the holes 24 , 26 .
  • the aligned holes 20 , 26 and 22 , 24 receive the respective rivets 30 , which ends are flushed after inserting the rivet in the holes 20 , 26 or 22 , 24 .
  • Each rivet 30 couples holes 24 or 26 of the inner plates 18 leaving play and couples holes 20 or 22 of the outer plates 16 with interference.
  • the chain to be closed terminates at both ends 10 and 12 with a pair of end inner plates 18 .
  • the two ends 10 , 12 are connected by means of the closing device 14 according to this invention, which comprises a first pair of outer links 32 and a second pair of outer links 34 .
  • the outer plates 32 , 34 are provided with respective holes 36 .
  • the device comprises at least one pair of inner plates 40 provided with holes 42 with flushed portions forming bushings on which the respective rollers 44 turn.
  • the inner plates 40 pivot on the outer plates 32 , 34 by means of a pair of rivets 46 with flushed ends.
  • the closing device 14 can further comprise any number of chain links (each one, as already said, comprising a pair of outer plates, a pair of inner plates, a roller and a rivet) so as to form a chain section of any predetermined length. In any case, both ends of the closing device 14 terminate with outer plates 32 , 34 .
  • each rivet 48 has an insertion portion 50 clipping into the holes 36 of the outer plates 32 , 34 and a head portion 52 coming into contact with the outer surface of the corresponding outer plate 32 .
  • the rivets 48 are clipped only into one of the holes 36 of the outer plates 32 .
  • both rivets project on the same side of the closing device 14 .
  • the rivets can be arranged so to project from opposite sides of the closing device.
  • the closing device 14 is fitted according to the sequence shown in FIGS. 2 and 3.
  • a first phase shown in FIG. 2
  • the outer plates 32 , 34 of the closing device 14 are arranged outside the end inner plates 18 of the end portions 10 , 12 and the chain, so that the holes 36 of the outer plates 32 , 34 are aligned with the holes 24 of the inner plates 18 .
  • the device is closed by inserting the rivets 48 in the aligned holes 24 , 36 the end of travel of the rivet, defined by the condition in which the head portion 52 comes into contact with the external surface of the corresponding plate 32 .
  • the portions 50 of the rivets 48 clip into the corresponding holes 36 of the plates 32 .
  • FIGS. 4 and 5 illustrate an alternative embodiment of the closing device according to this invention.
  • the parts corresponding to those described above are indicated with the same reference numerals.
  • each rivet 48 is provided with a guide element 54 for guiding the insertion of the rivet 48 in the aligned holes 36 , 24 of the outer plates 32 , 34 and the inner plates 18 .
  • Each rivet 48 and corresponding guide element 54 is preferably made as described in co-pending U.S. patent application Ser. No. 10/165,147, filed on Jun. 7, 2002, assigned to the assignee hereof, and incorporated herein as if fully set forth.
  • the guide element 54 is separate from the rivet 48 and is removed after completing the insertion of the rivet, as shown in FIG. 5.
  • FIGS. 6 and 7 illustrate on a larger scale the clip engagement position of the rivet after fitting.
  • the rivets 48 used in the alternative embodiment shown in FIGS. 4 and 5 can be identical or different from those used in the embodiment shown in FIGS. 1, 2 and 3 .
  • the rivets 48 are not preventively inserted in a hole 36 because in this case the guide element 54 is inserted in the aligned holes 36 , 24 before planting the rivet.
  • the clip engagement portion 50 of each rivet 48 presents a rounded portion 56 for elastically widening the hole 36 so to engage by clipping without damaging the holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chain Conveyers (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

Device for closing a chain, particularly a bicycle chain, comprising a first and a second pair of end outer plates connected by at least one pair of inner plates, a pair of rivets so engaging a pair of end holes of the first and the second pair of outer plates and the corresponding holes of a pair of, inner plates arranged at the ends of the chain.

Description

    FIELD OF INVENTION
  • This invention relates to a device for closing a chain, particularly a bicycle chain. In the following description and claims herein, the term “closing” referred to a chain indicates the reciprocal connections of the two ends of the chain. [0001]
    • BACKGROUND
  • As known, a bicycle chain consists of a set of links, each of which comprises a pair of outer plates, a pair of inner plates and a rivet inserted in aligned holes in the inner plates and in the outer plates. The ends of the rivet are flushed after inserting the rivet in the aligned holes of the outer plates and the inner plates, so to form retainer portions, which diameter is larger than the diameter of the holes in the outer plates. The flushed portions of the rivet prevent the rivet from slipping out in the direction of its axis. Normally, bicycle chains are supplied “open” and the two ends of the chain are connected after the chain has been arranged around the chain wheels and the sprockets on the bicycle. Normally, when the chain is fitted, its length must be adjusted by removing a certain number of links. This is done by removing a rivet. Further, the length of the chain must be also adjusted when the bicycle gears and/or sprockets are replaced. [0002]
  • In the known solutions, a pair of outer plates must be left on a first end of the chain and a pair of inner plates must be left on the other end of the chain. The outer plates and the inner plates on the ends are arranged with their respective holes aligned and a new rivet is inserted in said aligned holes to close the chain. [0003]
  • The main problem of known solutions consists in that the holes of the outer plates are damaged when a rivet is removed to adjust the chain length, especially when the ends of the rivets of the chain present a high interference in the radial direction with the holes of the outer plates. In the known solutions, the closing point of a chain is critical in terms of resistance due to the damaged outer plate holes. [0004]
    • SUMMARY
  • The present invention concerns devices for bringing the ends of a chain, especially bicycle chains, together to form the transmission chains normally associated with power transfer in pedal driven vehicles.[0005]
    • BRIEF DESCRIPTION OF THE DRAWING(S)
  • This invention will be better explained by the following detailed descriptions with reference to the accompanying figure as non-limiting example, whereas: [0006]
  • FIGS. 1, 2 and [0007] 3 illustrate the assembly sequence of a device for closing a chain according to a first form of embodiment of this invention,
  • FIGS. 4 and 5 illustrate the assembly sequence of an alternative embodiment of a device according to this invention and [0008]
  • FIGS. 6 and 7 are enlarged details of the respective encircled portions of FIG. 5.[0009]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
  • As used herein, the terms “closing” or “closed” refer to being the free ends of the chain into a desired position and using a device to connection them endless. [0010]
  • With reference to FIG. 1, [0011] numerals 7 and 12 respectively indicate two ends of a bicycle chain. Numeral 14 indicates a chain closing device according to this invention, which is used to reciprocally connect the two ends 10, 12.
  • The chain comprises a set of chain link of the known type. Each link comprises a pair of [0012] outer plates 16 and a pair of inner plates 18. Each outer plate 16 has two holes 20, 22 and each inner plate 18 has two holes 24, 26, preferably provided with flushed portions forming respective bushings. Each pair of inner plates 18 is connected to two rollers 28 fitted to turn on the bushings aligned with the holes 24, 26. The aligned holes 20, 26 and 22, 24 receive the respective rivets 30, which ends are flushed after inserting the rivet in the holes 20, 26 or 22, 24. Each rivet 30 couples holes 24 or 26 of the inner plates 18 leaving play and couples holes 20 or 22 of the outer plates 16 with interference.
  • As it appears from FIG. 1, the chain to be closed terminates at both [0013] ends 10 and 12 with a pair of end inner plates 18. The two ends 10, 12 are connected by means of the closing device 14 according to this invention, which comprises a first pair of outer links 32 and a second pair of outer links 34. The outer plates 32, 34 are provided with respective holes 36. The device comprises at least one pair of inner plates 40 provided with holes 42 with flushed portions forming bushings on which the respective rollers 44 turn. The inner plates 40 pivot on the outer plates 32, 34 by means of a pair of rivets 46 with flushed ends. The closing device 14 can further comprise any number of chain links (each one, as already said, comprising a pair of outer plates, a pair of inner plates, a roller and a rivet) so as to form a chain section of any predetermined length. In any case, both ends of the closing device 14 terminate with outer plates 32, 34.
  • The end [0014] outer plates 32, 34 of the device 14 are associated with a pair of rivets 48, each of which is destined to be inserted through the holes 36 of the end outer plates 32, 34 of the closing device 14 and through the holes 24 of the inner plates 18 of the end portions 10, 12 of the chain. Preferably, each rivet 48 has an insertion portion 50 clipping into the holes 36 of the outer plates 32, 34 and a head portion 52 coming into contact with the outer surface of the corresponding outer plate 32.
  • In the embodiment shown in FIG. 1, the [0015] rivets 48 are clipped only into one of the holes 36 of the outer plates 32. In the example shown in FIG. 1 both rivets project on the same side of the closing device 14. In a possible alternative form of embodiment, the rivets can be arranged so to project from opposite sides of the closing device.
  • The [0016] closing device 14 is fitted according to the sequence shown in FIGS. 2 and 3. In a first phase, shown in FIG. 2, the outer plates 32, 34 of the closing device 14 are arranged outside the end inner plates 18 of the end portions 10, 12 and the chain, so that the holes 36 of the outer plates 32, 34 are aligned with the holes 24 of the inner plates 18. Later on, as shown in FIG. 3, the device is closed by inserting the rivets 48 in the aligned holes 24, 36 the end of travel of the rivet, defined by the condition in which the head portion 52 comes into contact with the external surface of the corresponding plate 32. After assembly, the portions 50 of the rivets 48 clip into the corresponding holes 36 of the plates 32.
  • FIGS. 4 and 5 illustrate an alternative embodiment of the closing device according to this invention. The parts corresponding to those described above are indicated with the same reference numerals. In this case, each [0017] rivet 48 is provided with a guide element 54 for guiding the insertion of the rivet 48 in the aligned holes 36, 24 of the outer plates 32, 34 and the inner plates 18. Each rivet 48 and corresponding guide element 54 is preferably made as described in co-pending U.S. patent application Ser. No. 10/165,147, filed on Jun. 7, 2002, assigned to the assignee hereof, and incorporated herein as if fully set forth. The guide element 54 is separate from the rivet 48 and is removed after completing the insertion of the rivet, as shown in FIG. 5.
  • FIGS. 6 and 7 illustrate on a larger scale the clip engagement position of the rivet after fitting. The [0018] rivets 48 used in the alternative embodiment shown in FIGS. 4 and 5 can be identical or different from those used in the embodiment shown in FIGS. 1, 2 and 3. In the version illustrated in FIGS. 4 and 5, the rivets 48 are not preventively inserted in a hole 36 because in this case the guide element 54 is inserted in the aligned holes 36, 24 before planting the rivet. The clip engagement portion 50 of each rivet 48 presents a rounded portion 56 for elastically widening the hole 36 so to engage by clipping without damaging the holes.

Claims (12)

What is claimed is:
1. Device for closing a chain, particularly a bicycle chain, characterised by comprising at least a pair of inner plates connected to a first and a second pair of end outer plates.
2. Device according to claim 1, characterised by comprising between the inner plates and at least one of the pair of end outer plates a predetermined number of chain links.
3. Device according to claim 1, characterised by comprising a pair of rivets for connecting a pair of end holes of the first and of the second pair of end outer plates to the corresponding holes of a pair of end inner plates of a chain to be closed.
4. Device according to claim 3, characterised in that each of said rivets is clipped into said end holes of said pairs of end outer plates.
5. Device according to claim 3, characterised in that each of said rivets engages only one hole of an end outer plate before the device is fitted on the end inner plates of the chain.
6. Device according to claim 3, characterised in that before fitting the device on the end inner plates of the chain, both of said rivets project from the same side of the device.
7. Device according to claim 3, characterised in that before fitting the device on the end inner plates of the chain, said rivets project from opposite sides of the device.
8. Device according to claim 3, characterised in that each of said rivets is associated with a guide element which is separated from the rivet after the rivet is planted in the aligned holes of the end outer plates and of the end inner plates.
9. Open chain, particularly a bicycle chain, characterised by comprising a predetermined number of chain links and a first and a second pair of end inner plates.
10. Device for closing a length of chain, having first and second ends of a given dimension, characterised by comprising at least a pair of inner plates connected at opposite ends thereof to a first and a second pair of outer plates which are separated by a distance at least equal to the given dimension.
11. Device according to claim 10 further characterised by a plurality of chain links each of which is comprised of a pair of inner plates connected to at least one pair of outer plates.
12. Device according to claim 10 further characterised by the outer plates having a pair of end holes, the inner plate have a pair of end holes which are aligned with the outer plate end holes and secured together by rivets in the aligned holes.
US10/193,008 2001-07-11 2002-07-11 Device for closing a chain, particularly a bicycle chain Abandoned US20030022748A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/888,188 US6966170B2 (en) 2001-07-11 2004-07-09 Device for closing a chain, particularly a bicycle chain
US11/285,023 US7131258B2 (en) 2001-07-11 2005-11-22 Device for closing a chain, particularly a bicycle chain

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001TO000677A ITTO20010677A1 (en) 2001-07-11 2001-07-11 DEVICE FOR CLOSING A CHAIN, IN PARTICULAR FOR A BICYCLE.
ITTO2001A000677 2001-07-11

Related Child Applications (1)

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US10/888,188 Continuation US6966170B2 (en) 2001-07-11 2004-07-09 Device for closing a chain, particularly a bicycle chain

Publications (1)

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US20030022748A1 true US20030022748A1 (en) 2003-01-30

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Application Number Title Priority Date Filing Date
US10/193,008 Abandoned US20030022748A1 (en) 2001-07-11 2002-07-11 Device for closing a chain, particularly a bicycle chain
US10/888,188 Expired - Fee Related US6966170B2 (en) 2001-07-11 2004-07-09 Device for closing a chain, particularly a bicycle chain
US11/285,023 Expired - Fee Related US7131258B2 (en) 2001-07-11 2005-11-22 Device for closing a chain, particularly a bicycle chain

Family Applications After (2)

Application Number Title Priority Date Filing Date
US10/888,188 Expired - Fee Related US6966170B2 (en) 2001-07-11 2004-07-09 Device for closing a chain, particularly a bicycle chain
US11/285,023 Expired - Fee Related US7131258B2 (en) 2001-07-11 2005-11-22 Device for closing a chain, particularly a bicycle chain

Country Status (7)

Country Link
US (3) US20030022748A1 (en)
EP (1) EP1275878B1 (en)
AT (1) ATE294341T1 (en)
DE (1) DE60203852T2 (en)
IT (1) ITTO20010677A1 (en)
PT (1) PT1275878E (en)
TW (1) TW564296B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8166744B2 (en) 2008-04-15 2012-05-01 Campagnolo S.R.L. Articulating pin for bicycle chains and relative chain

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20010677A1 (en) * 2001-07-11 2003-01-11 Campagnolo Srl DEVICE FOR CLOSING A CHAIN, IN PARTICULAR FOR A BICYCLE.
US7216472B1 (en) * 2006-05-09 2007-05-15 Wen-Pin Wang Guiding shaft structure for chain connector
KR100777299B1 (en) 2006-06-09 2007-11-20 엘지전자 주식회사 Washing or drying machine
US20080026896A1 (en) * 2006-07-26 2008-01-31 Sean Curran Bicycle chain with connected outer plates
AU2011253722A1 (en) * 2010-12-14 2012-06-28 Caterpillar India Private Limited Pin installation assembly and associated machine and method
US9651138B2 (en) 2011-09-30 2017-05-16 Mtd Products Inc. Speed control assembly for a self-propelled walk-behind lawn mower
TWI564491B (en) * 2014-12-12 2017-01-01 Chain of the chain unit and the chain of the series unit group
TW201629367A (en) * 2015-02-11 2016-08-16 Kmc Chain Ind Co Ltd Link unit of chain
CN107252868B (en) * 2017-08-17 2019-06-04 青岛征和工业股份有限公司 A kind of chain automatic ring connects head riveter

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US6364799B1 (en) * 1999-04-13 2002-04-02 Campagnolo Srl Quick-connection link, for a bicycle chain

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US547964A (en) * 1895-10-15 Splice for drive-chains
US2826893A (en) * 1955-04-26 1958-03-18 A M Collot Supplies Inc Chain pin extractor with a plurality of hinged stops
US4425103A (en) * 1981-09-11 1984-01-10 Dayco Corporation Belt tensioner, part therefor and methods of making the same
US4494945A (en) * 1982-01-29 1985-01-22 Enuma Chain Manufacturing Co., Ltd. Roller chain link construction and method of manufacture
US4998907A (en) * 1989-01-30 1991-03-12 Shimano Industrial Company Limited Connecting pin and method using the connecting pin
US5178585A (en) * 1991-12-31 1993-01-12 Ta Ya Chain Co., Ltd. Chain with easily adjustable number of links
US5461852A (en) * 1994-05-03 1995-10-31 Hitachi Metals, Ltd. Chain and Connecting pin thereof
US6176798B1 (en) * 1996-11-21 2001-01-23 Shimano, Inc Multiple sprocket assembly for a bicycle
US6364799B1 (en) * 1999-04-13 2002-04-02 Campagnolo Srl Quick-connection link, for a bicycle chain

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Publication number Priority date Publication date Assignee Title
US8166744B2 (en) 2008-04-15 2012-05-01 Campagnolo S.R.L. Articulating pin for bicycle chains and relative chain

Also Published As

Publication number Publication date
ITTO20010677A0 (en) 2001-07-11
ITTO20010677A1 (en) 2003-01-11
DE60203852T2 (en) 2006-01-19
US7131258B2 (en) 2006-11-07
US6966170B2 (en) 2005-11-22
EP1275878B1 (en) 2005-04-27
ATE294341T1 (en) 2005-05-15
PT1275878E (en) 2005-08-31
US20040237496A1 (en) 2004-12-02
TW564296B (en) 2003-12-01
DE60203852D1 (en) 2005-06-02
EP1275878A1 (en) 2003-01-15
US20060070369A1 (en) 2006-04-06

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AS Assignment

Owner name: CAMPAGNOLO SRL, ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MEGGIOLAN, MARIO;REEL/FRAME:013142/0418

Effective date: 20020910

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION