CN1393368A - Bicycle crank and method for producing same - Google Patents
Bicycle crank and method for producing same Download PDFInfo
- Publication number
- CN1393368A CN1393368A CN 02123166 CN02123166A CN1393368A CN 1393368 A CN1393368 A CN 1393368A CN 02123166 CN02123166 CN 02123166 CN 02123166 A CN02123166 A CN 02123166A CN 1393368 A CN1393368 A CN 1393368A
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- China
- Prior art keywords
- elongated core
- insert
- bicycle crank
- core
- crank according
- 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.)
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Links
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 19
- 229920003023 plastic Polymers 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 10
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 7
- 208000034189 Sclerosis Diseases 0.000 claims description 7
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims 1
- 239000004917 carbon fiber Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 1
- 239000001993 wax Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000010030 laminating Methods 0.000 description 10
- 238000000465 moulding Methods 0.000 description 10
- 239000003610 charcoal Substances 0.000 description 9
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 8
- 238000006116 polymerization reaction Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002344 fibroplastic effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Bicycle crank comprising: an elongated core (10) with a first and a second end (12, 14), a first and a second insert (24, 26) arranged on the ends of said core (10), and a high-resistance fibre coating incorporated in a plastic material matrix forming a casing incorporating said core (10) and said inserts (24, 26). The core (10) is a pre-formed element and each insert (24, 26) is connected to the respective end (12, 14) of the core (10) by means of a respective union element (16, 18) with recesses (20, 32, 22, 34) for establishing a shape coupling with an insert (24, 26) and the respective end portion (12, 14) of the core (10).
Description
Technical field
The present invention relates to a kind of bicycle crank and a kind of method of producing described crank.
Background technology
Or rather, a kind of bicycle crank that the present invention relates to comprises:
A kind of elongated core with first end and second end,
First and second inserts, be arranged on described core the end and
A kind of clad that is combined in high drag fiber in a kind of plastic material masterbatch.
U.S. Patent number 6,202,506 have described a kind of top pointed bicycle crank, and wherein this insert foaming forms a kind of rigid plastic material to form the crank core.The disclosed a kind of method of producing crank of this document comprises the steps: that the fabric that one deck is immersed in the synthetic resin is injected in the mould so that a kind of fiber reinforced plastics shell of local opening to be provided; In the shell of local opening, insert a pair of insert; Make this insert be foamed into insert with high drag foam; The fabric that is immersed in the plastic material with one deck at least seals this fiber reinforced plastics material shell; Make the sclerosis of this fiber reinforced plastics material and described foam.
Summary of the invention
The purpose of this invention is to provide a kind of crank and a kind of method of producing described crank, the simpler connection between insert and core wherein is provided, this method need be to this insert foaming in mould.
According to the present invention, this purpose can realize by a kind of production method and a kind of crank with the feature that forms the claim theme.
By following detailed description and with reference to as not limiting the accompanying drawing that embodiment provides, will better explain the present invention, wherein:
Description of drawings
Fig. 1 is the transparent view of demonstration according to the element of the left crank of the first embodiment of the present invention;
Fig. 2 is the vertical section transparent view of the element shown in Fig. 1;
Fig. 3 is the transparent view that the element that is in the Fig. 1 in the package assembly is shown;
Fig. 4 is the decomposition diagram that illustrates according to the element of the right crank of the first embodiment of the present invention;
Fig. 5 letter has shown that use multilayer charcoal fiber is to produce the laminating molding stage according to the crank of first embodiment of the invention;
Fig. 6 is according to the longitudinal cross-section view of the crank of the first embodiment of the present invention when laminating molding and charcoal fiber poly-merization stage finish;
Fig. 7 is the top view of completion crank;
Fig. 8 is the decomposition diagram that illustrates according to the element of the left crank of second embodiment of the invention;
Fig. 9 is and the similar transparent view of Fig. 9 to show the longitudinal cross-section of core;
Figure 10 is a decomposition diagram, shows the element of right crank according to a second embodiment of the present invention;
Figure 11 letter has shown that use multilayer charcoal fiber is to produce the laminating molding stage according to the crank of second embodiment of the invention; With
Figure 12 is according to a second embodiment of the present invention the longitudinal cross-section view of crank when laminating molding and charcoal fiber poly-merization stage finish.
The specific embodiment
With reference to Fig. 1-3, Reference numeral 10 indicates the expanded plastic material core of the prefoam that obtains by foaming in mould, for example poly-urethane or similar material core.This core 10 has elongated shape and the both ends 12,14 that link to each other with Connection Element 16,18 is respectively arranged; Described Connection Element is provided with the groove 20,22 of the end 12,14 that holds core 10, and this core is set up a kind of in conjunction with shape with them then.
Fig. 3 illustrates by the core 10 that is in installing condition, the structure that Connection Element 16,18 and metal insert 24,26 form.This core 10 does not have Structural Characteristics, promptly can not transmission power or torque between insert 24,26.This core 10 keeps bonded assembly insert 24,26 to limit the position and forming a stayed surface during the laminating molding stage that Fig. 5 letter is shown to provide suitable contrast ratio during molded pre-.Term " laminating molding " refer to here on the structure that forms by insert 24,26 and core 10 with 36 and thin slice 38 stack the operation of stratification.This operation is used for guiding this reinforcing fiber to give this crank needed architectural feature in only mode.
Structure shown in Fig. 3 be wrapped in by be combined in high drag structural in the plastic material masterbatch fibroplastic be with 36 and thin slice 38 in.This band and thin slice 36,38 are preferably made by the fabric that is combined in the charcoal fiber in the thermosetting resin.This structural fibers can be selected in charcoal fiber, glass fibre, aromatic fiber, boron fiber, ceramic-fibre or any their bond.Behind laminating molding, this crank is molded and is heated under the polymerization temperature more than or equal to thermosetting resin simultaneously.This molded operating in the mould is implemented (not shown) down with pressure.During molded, core is different with this insert institute applied pressure.This pressure makes plastic material masterbatch fabric tight.
After molded, this plastic material masterbatch sclerosis.The crank that takes out from mould such as Fig. 6 letter show to have the uniform charcoal fiber shell 40 that has sealed core 10 and insert 24,26.This shell 40 has the Structural Characteristics of high drag and can transmit the suffered stress of crank during use from an insert to another insert.
The above-mentioned method about left crank is applicable to similarly produces right crank shown in Figure 4.In this case, this insert 26 that is used to connect base is equipped with the metal spokes 42 of a cover one.In the embodiment shown in fig. 4, this insert 26 has four spokes 42, and this spoke end 44 is formed for the end of fastening pair of sprocket (not shown).One the 5th fastening end is obtained by the 3rd metal insert 46 in the groove 48 that is placed in core 10.This crank shown in Fig. 4 is similar in mould and is subjected to laminating molding and poly-merization above-mentionedly.
In left crank and two kinds of situations of right crank, behind the poly-merization, it is formed for connecting the tapped bore 50 and the polygonal hole 52 that is used to be connected datum axle of pedal spindle to this insert by machinework in mould.
As has been said, this core 10 does not have any structure drag substantially, and the part with Structural Characteristics that crank is unique is a shell 40, it have high drag and can be between the crank used life in insert 24 and 26 transmission power and torque.
Therefore core 10 can be made by any plastic material that offers structural fibers shape and support, for example the foamed plastic of any kind, wax or resin etc.
According to a preferred embodiment of the invention, this core 10 is in the 40 molded and sclerosis back taking-ups of structural fibers shell.This core can be formed by granulated material, for example the sand that mixes with adhesive resin.This granulated material can take out from crank by the hole in the structural fibers shell 40 in these shell 40 sclerosis backs, therefore forms a single structure element, and this element is only formed by the shell 40 and the metal insert 24 and 26 of structural fibers.
The second embodiment of the present invention is shown in Fig. 8-12, wherein with same Reference numeral indication element as hereinbefore.This insert 24,26 is provided with connecting bridge 60,62 in this second embodiment, and they are inserted into the shape of also setting up in core 10 respective end portions 12,14 with core 10 that combines.
This core 10 is preferably formed by the tube element of the plastics with limited structure reactance, metal or fiber reinforced materials.This insert 24,26 can be made by metallic material, aluminum alloy for example, and perhaps the fiber reinforced plastics material is made.This insert has the hole that is respectively applied for placement pedal spindle and datum axle (not shown).
As Figure 11 letter show, the structure that comprises core 10 and insert 24,26 be wrapped in by be inserted into that high drag structural fibers in the plastic material masterbatch forms be with 36 and thin slice 38 in.This band and thin slice 36,38 are preferably made by the charcoal fabric that is inserted in the thermosetting resin.This structural fibers can be at charcoal fiber, glass fibre, aromatic fiber, boron fiber, selects in ceramic-fibre or any their bond.
This core 10 keeps these bonded assembly inserts 24,26 in the desired location and the stayed surface during forming laminating molding.Term " laminating molding " and the identical implication of the disclosed first embodiment of the present invention in front.
The above-mentioned production process about left crank is used to produce right crank similarly, as shown in figure 10.In this situation, the insert 26 that is used to connect base is equipped with a cover single-piece metal spokes 42, as Fig. 4 is disclosed.Insert 26 has a connecting bridge 62 that combines shape with core 10 foundation.
In left crank and two kinds of situations of right crank, after in mould, carrying out poly-merization, this insert is carried out the tapped bore 50 and the square hole 52 that is used to be connected datum axle that machinework is formed for connecting pedal spindle.
Such as has been said, the main purpose of elongated core 10 is to provide a shape and stayed surface for structural fibers.Therefore this core 10 does not have any structure drag substantially, perhaps has limited structure reactance.
Use the limited structure reactance of term, be meant that this shell 40 offers the most structure reactance of this crank, this shell 40 has high drag and can transmit most power and torque between the crank used life between insert 26 and 24.
Furtherly, crank is formed by the single structure unit in first embodiment of the invention, and the shell that this unit includes only a structural fibers is arranged on the insert of outer casing end with at least one pair of.In fact these are the unique structural constituents of this crank, promptly this element can crank is normal use in transfer charge.
Nature can be implemented many changes for the form and the structure of embodiments of the invention disclosed herein, and as following claim was defined, all changes were included in the context of characterization notion of the present invention.
Claims (22)
1. bicycle crank, it is characterized in that, comprise a single structure element, one is combined in the shell (40) of the structural fibers in the plastic material masterbatch and is arranged on first and second inserts (24,26) that described shell (40) end is used for connecting pin pedal and datum axle.
2. bicycle crank according to claim 1 is characterized in that, it comprises interior the 3rd insert (46) of a zone line that is arranged on described crank.
3. bicycle crank according to claim 1 is characterized in that, described structural fibers is selected from carbon fiber, glass fibre, aromatic fiber, boron fiber, ceramic-fibre or any their bond.
4. bicycle crank according to claim 1 is characterized in that, described insert (24,26) is metallic.
5. bicycle crank according to claim 4 is characterized in that, described insert (24,26) is made by aluminum alloy.
6. bicycle crank according to claim 4 is characterized in that, described insert (24,26) is made by the fiber reinforced plastics material.
7. bicycle crank according to claim 1 is characterized in that, it comprise an elongated core (10) with described shell (40) only structure be connected or bonded assembly first and second inserts (24,26) basically only.
8. bicycle crank according to claim 7 is characterized in that, described elongated core (10) does not have structure reactance basically.
9. bicycle crank according to claim 8 is characterized in that, described elongated core (10) is made by the material that is selected from foamed plastic, wax and resin.
10. bicycle crank according to claim 9 is characterized in that, described elongated core (10) is the preforming main body of an expanded plastic material.
11. bicycle crank according to claim 1 is characterized in that, it comprises that attaching parts (16,18) is used for setting up in conjunction with shape with described insert (24,26).
12. according to Claim 8 with 11 each described bicycle cranks, it is characterized in that, described elongated core (10) has end (12,14) and described attaching parts (16,18) have groove (20,32,22,34) so that set up one in conjunction with shape with the end (12,14) of described insert (24,26) and described elongated core (10).
13. bicycle crank according to claim 7 is characterized in that, described elongated core (10) is a rigidity.
14. bicycle crank according to claim 7 is characterized in that, described elongated core (10) has limited structure reactance.
15. bicycle crank according to claim 13 is characterized in that, described elongated core (10) is made of plastics
16. bicycle crank according to claim 13 is characterized in that, described elongated core (10) is made of metal.
17. bicycle crank according to claim 13 is characterized in that, described elongated core (10) is made by the fiber reinforced plastics material.
18. make a kind of method of bicycle crank, it is characterized in that, comprise the steps:
A) form an elongated core (10),
B) opposite end (12,14) at described elongated core (10) adds a pair of insert (24,26),
C) on elongated core (10) and insert (24,26), apply the clad that is combined in the structural fibers in the plastic material masterbatch and
D) make described plastic material masterbatch sclerosis to form a shell (40) that seals the high drag rigidity of described elongated core (10) and described insert (24,26).
19. method according to claim 18 is characterized in that, it is included in the step that elongated core (10) is taken out in described plastic material masterbatch sclerosis back.
20. method according to claim 19 is characterized in that, described elongated core (10) is formed by granulated material, and this core (10) takes out by the hole in the outer rigid housing (40) of described sclerosis.
21. method according to claim 18 is characterized in that, it is included in the interior step that adds one the 3rd insert (46) of zone line of described elongated core (10).
22. method according to claim 18 is characterized in that, it is included in opposite end (12,14) the adding attaching parts (16,18) of described elongated core (10) and goes up the step of adding insert (24,26) at described attaching parts (16,18).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO2001A000621 | 2001-06-27 | ||
| ITTO2001A000617 | 2001-06-27 | ||
| IT2001TO000617A ITTO20010617A1 (en) | 2001-06-27 | 2001-06-27 | CRANK FOR BICYCLE AND PROCEDURE FOR ITS MANUFACTURE. |
| IT2001TO000621A ITTO20010621A1 (en) | 2001-06-27 | 2001-06-27 | CRANK FOR BICYCLE AND PROCEDURE FOR ITS MANUFACTURE. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1393368A true CN1393368A (en) | 2003-01-29 |
| CN100335347C CN100335347C (en) | 2007-09-05 |
Family
ID=26332882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021231664A Expired - Fee Related CN100335347C (en) | 2001-06-27 | 2002-06-27 | Bicycle crank and method for producing same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003072666A (en) |
| CN (1) | CN100335347C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572650B (en) * | 2003-06-11 | 2010-04-28 | 坎培诺洛有限公司 | Bicycle component and method for manufacturing the same |
| CN104058060A (en) * | 2010-08-18 | 2014-09-24 | 株式会社岛野 | Bicycle crank assembly |
| CN110386217A (en) * | 2018-04-17 | 2019-10-29 | 休轮自行车有限责任公司 | Crank component of bicycle |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1486412B1 (en) * | 2003-06-10 | 2014-05-07 | Campagnolo S.R.L. | Bicycle pedal crank |
| JP2005047382A (en) | 2003-07-29 | 2005-02-24 | Shimano Inc | Bicycle crank arm |
| DE602005020902D1 (en) * | 2004-01-13 | 2010-06-10 | Toray Industries | CRANKS FOR BICYCLE AND METHOD FOR THE PRODUCTION THEREOF |
| JP5002922B2 (en) * | 2005-07-29 | 2012-08-15 | 東レ株式会社 | Arm-shaped stress transmission member |
| ATE523419T1 (en) | 2006-02-14 | 2011-09-15 | Campagnolo Srl | BICYCLE PEDAL CRANK AND PRODUCTION METHOD FOR SUCH A PEDAL CRANK |
| JP2007302222A (en) | 2006-04-14 | 2007-11-22 | Shimano Inc | Bicycle crank |
| US9527548B2 (en) * | 2013-12-20 | 2016-12-27 | Sram, Llc | Bicycle crank arm assembly |
| JP2015227152A (en) * | 2014-05-09 | 2015-12-17 | 株式会社シマノ | Component for bicycle, shaft member for bicycle, rear sprocket assembly for bicycle, and lever member for bicycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58224872A (en) * | 1982-06-23 | 1983-12-27 | 本田技研工業株式会社 | Manufacture of rear fork arm for motorcycle |
| JPS6022323U (en) * | 1983-07-22 | 1985-02-15 | 大日本硝子工業株式会社 | Fiber-reinforced plastic column |
| JPH0349721Y2 (en) * | 1984-09-13 | 1991-10-23 | ||
| JPS61177833U (en) * | 1985-04-24 | 1986-11-06 | ||
| EP0270388B1 (en) * | 1986-10-31 | 1990-07-18 | Look Sté. | Pedal crank for a bicycle |
| US4841801A (en) * | 1987-03-25 | 1989-06-27 | Trw Inc. | Connecting rod |
| JPH0159625U (en) * | 1987-10-08 | 1989-04-14 | ||
| FR2636386A1 (en) * | 1988-09-13 | 1990-03-16 | Peyrard | Elongate component of high mechanical strength, and its method of manufacture |
| US5010785A (en) * | 1990-06-11 | 1991-04-30 | Seattle Bike Supply | Crank arm for a bicylce |
| JPH04261678A (en) * | 1991-02-15 | 1992-09-17 | Mizuno Corp | Racket frame and manufacture of the same |
| JPH06321167A (en) * | 1993-05-14 | 1994-11-22 | Mitsubishi Rayon Co Ltd | Bicycle crank |
| JPH07232336A (en) * | 1994-02-24 | 1995-09-05 | Nippo Sangyo Kk | Method for molding frp-molded article having built-in light-weight core material |
| JPH09323365A (en) * | 1996-06-06 | 1997-12-16 | Toyota Autom Loom Works Ltd | Gas fuel tank and its molding method |
| JP3149374B2 (en) * | 1996-12-27 | 2001-03-26 | 株式会社シマノ | Bicycle hollow crank and manufacturing method thereof |
| US5941135A (en) * | 1997-06-18 | 1999-08-24 | Schlanger; Raphael | Bicycle crankshaft assembly |
| JPH11192991A (en) * | 1998-01-06 | 1999-07-21 | Exedy Corp | Structure of frp monocock frame for bicycle and its manufacture |
| EP1986311A2 (en) * | 2007-04-26 | 2008-10-29 | Seiko Epson Corporation | Brushless electric machine |
-
2002
- 2002-06-25 JP JP2002184334A patent/JP2003072666A/en active Pending
- 2002-06-27 CN CNB021231664A patent/CN100335347C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572650B (en) * | 2003-06-11 | 2010-04-28 | 坎培诺洛有限公司 | Bicycle component and method for manufacturing the same |
| CN104058060A (en) * | 2010-08-18 | 2014-09-24 | 株式会社岛野 | Bicycle crank assembly |
| CN104058060B (en) * | 2010-08-18 | 2016-08-17 | 株式会社岛野 | Crank component of bicycle |
| CN110386217A (en) * | 2018-04-17 | 2019-10-29 | 休轮自行车有限责任公司 | Crank component of bicycle |
| US11142281B2 (en) | 2018-04-17 | 2021-10-12 | Huron Cycling, LLC | Cycle crank assembly |
| CN110386217B (en) * | 2018-04-17 | 2022-06-10 | 休轮自行车有限责任公司 | Bicycle crank assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100335347C (en) | 2007-09-05 |
| JP2003072666A (en) | 2003-03-12 |
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Granted publication date: 20070905 |