Tiêu chuẩn iso 04210 7 2014

© ISO 2014 Cycles — Safety requirements for bicycles — Part 7 Wheels and rims test methods Cycles — Exigences de sécurité des bicyclettes — Partie 7 Méthodes d’essai des roues et des jantes INTERNATIO[.]

© ISO 2 14

Part 7:

Cycles — Exigenc s de sécurité de s bic yclet e s —

Partie 7: Méth de s d’essai de s ro e s et de s ja te s

Fir t edition

2 14-07-0

Refer ence n mb r

ISO 42 0-7:2 14(E)

i © ISO 2014 – A ll rights reserved

© ISO 2014

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© ISO 2014 – Al rig hts r eserved i

F r eword i v

Introduction v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms and definitions 1

4 Test metho s 1

4.1 Rotational ac uracy 1

4.2 Whe l/tyr e as embly — Static s r eng th tes — Tes method 3

4.3 Whe ls — Fr ont/r ear whe l retention devic s se ured — Tes method 4

4.4 Green ouse efe t tes for comp site whe ls — Tes method 4

A nne x A (informative)Whe l/tyre as embl y — Fatig ue test 6

ISO (he Int ernational Org nization for Stan ardization) is a worldwide fede ation of national s an ards

b dies (ISO membe b dies) The work of pr paring Int ernational Stan ards is normal y car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sp nsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

F or an ex lanation on the meaning of ISO spe if ic t erms and ex r s ions r lat ed t o conformity

as es ment, as wel asinformation a out ISO’s ad e enc t o the WTO principles in the Te hnical Bar ie s

t o Trade (TBT) se the folowing URL: F or word - Supplementary information

The committ ee r sp nsible for this document is ISO/TC149, Cycles , Subcommitt ee SC 1, Cycles a d major

s ub-as sembles

This firs edition of ISO 42 0-7, t og ethe with ISO 42 0-1, ISO 42 0- 2, ISO 42 0-3, ISO 42 0-4, ISO 42 0-5,

ISO 42 0-6, ISO 42 0-8, and ISO 42 0-9, canc ls an r plac s ISO 42 0:1 9 , w hich has be n t ech icaly

r vised

ISO 42 0 consis s of the folowing part , un e the g ene al title Cycles — S fet y r q ir ments fr bicycles:

— Part 1: Te ms a d de initio s

— Part 2 : R eq ir ments fr c it y a d tr kkin ,y u g adult, mo ntain a d rac in bicycles

— Part 3 : Commo tes t meth ds

— Part 4 : B rakin tes t meth ds

— Part 5: Ste rin tes t meth ds

— Part 6 : Frame a d frk tes t meth ds

— Part 7: Whe ls a d rims tes t meth ds

— Part 8: Pedal s a d drive sys temtes t meth ds

— Part 9: S d les a d seat-p s t tes t meth ds

This Int ernational Stan ard has be n develo ed in r sp nse t o deman throughout the world, an the

aim has be n t o ensur that bicycles man factur d in compl anc with this Int ernational Stan ard

wi be as safe as is practicaly p s ible The t es s ha e be n designed t o ensur the s r ngth an

d ra i ty of in ivid al p rt as wel as of the bicycle as a w hole, deman ing high q alty throughout

an conside ation of safety aspe t from the design s ag e onwards

The sco e has be n lmit ed t o safety conside ations, an has spe if icaly a oided s an ardization of

comp nent

If the bicycle is t o be used on publc ro ds, national r gulations a ply

Cycles — Safety requirements for bicycles —

Part 7:

This part of ISO 42 0 spe if ies w he l and rim t es methods for ISO 42 0- 2

2 Normati ve referenc es

The folowing document , in w hole or in p rt, ar normatively r fe enc d in this document an ar

in ispensa le for it a pl cation F or dat ed r fe enc s, only the edition cit ed a ples F r un at ed

r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment )a ples

ISO 42 0-1, Cycles — S fet y r q ir ments fr bicycles — Part 1: Te ms a d de initio s

ISO 42 0- 2:2 14, Cycles — S fet y r q ir ments fr bicycles — Part 2 : R eq ir ments fr c it y a d tr kkin ,

y u g adult, mo ntain a d rac in bicycles

ISO 42 0-3:2 14, Cycles — S fet y r q ir ment fr bicycles — Part 3: Commo tes t meth ds

3 Terms and definitions

F or the purposes of this document, the t erms an def initions given in ISO 42 0-1 a ply

4 Test methods

4.1 Rotational ac curacy

The run-out t ole anc s r pr sent the ma imum v riation of the p sition of the rim w hen measur d

pe pen icular t o the a le at a suita le p int along the rim ( e Figur 1 an Figur 2) ( i.e ful in icat or

r ading)of a fuly as embled an adjust ed w he l d ring one complet e r v lution a out the a le without

a ial mo ement Both sides of the rim shal be measur d an the ma imum v lue shal be taken as r sult

F or city an tr k ing, mou tain, an y ung ad lt bicycles, the measur ment of b th a ial run-out lat eral)

an radial ru -out (conc ntricity) shal be done with a tyr f itt ed an inflat ed t o the ma imum inflation

pr s ur , but or rimsw he e conc ntricity cannot be measur d with the tyr f itt ed, it is pe mis ible t o

make measur ment with the tyr r moved

F or racing bicycles, the measur ment of b th a ial ru -out (lat eral) an radial run-out (conc ntricity)

shal be measur d at the same time as shown in Figur 2 an a tyr is not r q ir d t o be f itt ed

B

Key

3 h b ax le su port 9 dial-gaug e (concentricity; alternative positions)

Figure 1 — Whe ls/tyre as embly— Rotatio al ac uracy for city and trekking, young ad lt, and

mo ntain bicycles

2 dial-g aug e (concentricity) 6 dial-gaug e (lateral ru -out)

Figure 2— Whe l — Rotational ac uracy for racing bicycles

4.2 Whe l/tyre as embl y — Static str eng th test — Test method

Clamp an sup ort the w he l suita ly as shown in Figur 3 Ap ly a pr -lo d of 5 N on the rim at one

sp ke pe pendicular t o the plane of the w he l as shown in Figur 3 R ecord the z ro p sition of the rim

at the point of lo d a plcation asshown Then a ply a s atic for e of F given in Ta le 1for a d ration of

1 min R ed c the lo d t o 5 N an alow a 1 min set lng time Aft er this set l ng time an with the 5 N

lo d s i a pled, r -measur the p sition of the rim

The w he l shal be f itt ed with the a pro riat e siz tyr an inflat ed t o thema imum inflation pr s ur

In the case of a r ar w he l, a ply the for e from the sprocket sideof the w he l as shown in Figur 3

R epeat he a o e measur ment onc betwe n two sp kes

Table 1 — F or es o rim

For ces in new tons

Bicycle ty e

City and tr

k-king bicycles

You g ad lt

bicycles

Mountain

bicycles

Racing

bicy-cles

F or e

F

Key

1 clamping fix tur e

2 whe l/tyre as embly

3 drive spr ockets

Figure 3— Whe l/ tyre as embly— Static strength test

4.3 Whe ls — F r ont/rear wheel retention devic es secured — Test method

Ap ly a for e of 2 3 0 N dis ribut ed symmetrical y t o b th en s of the a le for a pe iod of 1 min in the

dir ction of the r mo al of the front an r ar w he l in epen ently

4.4 Gr eenhouse efect test for c omposite wheels — Test method

A ful y as embled w he l, f itt ed with the a pro riat e siz tyr an inflat ed ac ording t o the lowe v lue

betwe n ma imum inflation pr s ur r commen ed on the rim or the tyr , shal be controled befor

the t est ;lat eral ru -out has t o be controled ac ording t o ISO 42 0- 2:2 14, 4.1 1 an ma imum widths

of the rim have t o be r p rt ed

A spe ific bench as shown in Figur 5could be used t o measur the ma imum width al arou d the rim

with tyr an pr s ur (contin ous measuring)

The w he l is laid down on the grou d of a cl mat e chambe , w hich has be n pr -heat ed at 80 °C, leant on

a le an tyr sup ort p int , sprocket side of the w he l, asshown in Figur 4, during 4 h A t the en of

4 h, the w he l should be taken out of the clmat e chambe an al owed t o co l down at ro m t empe atur

d ring 4 h t o r -measuring the rim width an it conformanc t o ISO 42 0- 2:2 14, 4.1 6.1 an 4.1 6.2

Figure 4 — Whe l laid d wn o tire and axle

Figure 5 — Maximum rim ’s width me suring

A nnex A

A 1 Wheel/tyre as embl y — Fatig ue test for city and trekking bicycles

A 1.1 Requirements

When t est ed b the method desc ibed in A.1.2, the e should be no fractur s, detachment , or visible

c acks in any part of the w he l, no los of air pr s ur in the tyr d e t o damag e from the w he l t o the

tyr or the in e tube (w hen f itt ed), an the u damag ed tyr should r main on the rim

A 1.2 Test method

As emble the w he l, tyr , an inne tube (w hen fitt ed) an inflat e the tyr t o 9 % of the ma imum

inflation pr s ur

Mou t the w he l/tyr as embly fr e t o rotat e on it a le, an fr e t o mo e in a ve tical dir ction L ad

the w he l as embly b means of dead weight a ains a drum eq ip ed with eq aly sp c d, transverse,

metal c slat such that the radial for e a pled t o the w he l/tyr as embly is 640 N The w he l an

drum ax es shal be ve ticaly al gned

An ex mple of a t es ar ang ement is shown in Figur A.1, in w hich the w he l a le is f ix ed betwe n the

fr e en s of a p ir ofpiv t ed arms that ext en horizontaly with the tyr contacting the drum betwe n

the slat

The diamet er of the drum shal be in therang e of 5 0 mm t o 1 0 0mm, an the slat shal ha e a width

of 5 mm ± 2,5 mm, a thick es of 1 mm ± 0,2 mm, and 45° chamfe ed edg es of half their thick es

The cir umfe ential sp cing betwe n the c ntr l nes of two conse utive slat shal be not les than

40 mm

Rotat e the drum t o give a lnear surfac spe d of 2 km/h (± 0 % ) for a pe iod t o pro ide 7 0 0 0

imp ct betwe n the tyr an the slat

Dimensions in milimetr es

Key

1 totalfor ce on the ax le, 6 0 N

h heig ht of slats

Figure A.1 — Whe l /tyre as embly— F atigue test

© ISO 2014 – A ll rig hts r eserved

ICS  43.150

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