|
|
PR A8主要内容
$ t z3 Q# e9 [- @& f& N1 W0 S& v1 Q/ R. P2 n
+ ^, z, w* p4 }! c& c+ I; ~
P8 C2 W" Z9 v/ j4 ^6 |" E
% L* ]" ]- I ^6 D/ IEN 71-1:2005/prA8:2008 (E)
" t& x2 @5 v e. C/ u$ a, W5 k3 {2- \+ x% q. @- P( d) d. }4 Y5 h) y3 b8 g
Contents Page
; O! E V' P. VForeword.............................................................................................................................................................31 V4 ^" U2 R/ U5 U9 D V4 z/ ^
3 Terms and definitions ...........................................................................................................................41 l7 M! j# z5 u; V4 f s" W; g4 n- F! t
4.23 Magnets (see A.51) ...............................................................................................................................49 O1 k) k4 \' s* `( h5 x
4.23.1 General...................................................................................................................................................47 F( h' T/ g A- i" p
4.23.2 Toys other than magnetic/electrical experimental sets.....................................................................4
. U$ F) p2 x) r1 s: C3 `5 P4.23.3 Magnetic/electrical experimental sets .................................................................................................4+ n: T4 e5 o4 M2 B! k, X# b5 p) Q& W
7.20 Magnetic/electrical experimental sets (see 4.23 and A.51) ...............................................................5) F& V* \4 l" @
8.34 Tension test for magnets (see A.51)....................................................................................................5
6 r3 z% k" }6 m7 p8 o8.34.1 Principle.................................................................................................................................................5) F5 \; a1 M9 N! Z" g' X
8.34.2 Toys that contain more than one magnet or magnetic component .................................................5& e; c' U9 k9 \
8.34.3 Toys that contain one magnet only .....................................................................................................52 Z1 d. N; \! Y9 r/ j4 s
8.35 Magnetic flux index...............................................................................................................................6
2 S( O* g9 R! ^* C. d; D7 W8.35.1 Principle.................................................................................................................................................6
4 D9 M5 p" M% b* x8 }8.35.2 Apparatus ..............................................................................................................................................6
2 w3 C7 t4 J, U, a3 H8.35.3 Procedure ..............................................................................................................................................6
! K: R- C0 z# X/ R, b8.35.4 Calculation of magnetic flux index ......................................................................................................6
" p) I; N7 @+ L+ R: ?A.51 Magnets (see 4.23)................................................................................................................................7
: ~9 L) `4 h+ A# E$ G( u3 DEN 71-1:2005/prA8:2008 (E)
7 ?: w; f( j9 o+ D) q3 iForeword
) n, T% Q/ x% h2 m7 qThis document EN 71-1:2005/prA8:2008 has been prepared by Technical Committee CEN/TC 52 “Safety of+ G) n9 H H. h; B; O I5 j* ?1 \" w
toys”, the secretariat of which is held by DS., L5 l( U. k" U$ Q
This document is currently submitted to the Unique Acceptance Procedure.
/ L% F2 W& f0 `2 T7 B. i7 i$ IThis document has been prepared under a mandate given to CEN by the European Commission and the
4 ~$ k& E3 a p1 a* CEuropean Free Trade Association, and supports essential requirements of EU Directive(s).1 F, y* r" ~* h! V" ]3 q
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
! W7 d1 Q7 I Z |+ {/ `7 @: vEN 71-1:2005/prA8:2008 (E)
: w1 `9 A+ S; }$ e. l0 ]4, t; P) R5 E- b; W
3 Terms and definitions+ S1 ^, e' J7 `% Z- P+ H
Add new definitions:$ |5 ]7 R+ d, f$ N" ^% e
3.xx
9 o0 }# r. A: X3 H( E( z0 Imagnetic component
, N' |+ m( x! [any part of a toy which contains an attached or fully or partially enclosed magnet
- t) u0 a, i) p3 o2 n3.yy
/ [: Z: H* H# n- X- C2 Hmagnetic/electrical experimental set Q0 F3 t, f# ~7 G; X
toy containing one or more magnets intended for carrying out educational experiments involving magnetism( C, J X+ y6 p! `
and electricity
" |, h# e7 _* P# h( }NOTE - This definition does not include magnetic/electrical experimental sets in which all magnets have a magnetic flux% }; I6 v1 C4 G6 P: S1 j! I3 y3 d
index less than 50 kG2mm2 (0,5 T2mm2) when tested according to 8.35 (magnetic flux index), or do not fit entirely in the6 {4 e* w+ j6 D6 L i: t
cylinder when tested according to 8.2 (small parts cylinder)
8 ]9 P c: @$ E$ G/ `) w7 c4 `3.zz
) A* k* v) X0 e! U8 R% i! |5 F/ o wfunctional magnet in electrical or electronic components of toys
j" x$ X; W- q' x4 Jany magnet necessary for the function of motors, relays, speakers and other electrical or electronic
6 ?4 r* c2 ]* N" R* g1 {components in a toy where the magnetic properties are not part of the play pattern of the toy+ Y0 J# r, z3 j R; N7 c$ C; V3 [
Add new clauses:7 |" {; g/ M5 O. T, W) }0 U
4.23 Magnets (see A.51): j6 X( m) C G4 O) f( W
4.23.1 General7 K1 b( j) V+ T0 l7 o7 Z' I
The requirements in 4.23.2 do not apply to functional magnets in electrical or electronic components of toys.
1 d! X M5 @& O g+ z4.23.2 Toys other than magnetic/electrical experimental sets
2 k- W8 s% O; ka) Any loose as-received magnet(s) and magnetic component(s) shall either have a magnetic flux index" A5 @9 @. Q$ M# M: f/ i6 {3 h
less than 50 kG2mm2 (0,5 T2mm2) when tested according to 8.35 (magnetic flux index), or shall not fit3 s0 Y) O- i/ ^- }
entirely in the cylinder when tested according to 8.2 (small parts cylinder).
& s4 T+ ^0 t9 }" F9 |b) Any magnet(s) and magnetic component(s) that become(s) released from a toy when tested; R( q' k+ T1 o/ U' {; N& ^( u
according to 8.3 (torque test), 8.4.2.1 (tension test, general), 8.4.2.2 (tension test, seams and
# B5 b/ j c% h4 B$ Kmaterials), 8.5 (drop test), 8.7 (impact test), 8.8 (compression test), and finally, for magnets that are
# b3 c/ i' y! e5 M2 oaccessible but not grippable (as specified in 8.4.1.3), 8.34 (tension test for magnets), shall either have
/ Q& V8 s* E) J+ ]1 Z' pa magnetic flux index less than 50 kG2mm2 (0,5 T2mm2) when tested according to 8.35 (magnetic flux
9 s) C. Z; f2 R. pindex), or shall not fit entirely in the cylinder when tested according to 8.2 (small parts cylinder).
$ `; [6 u( j5 v7 t, F. i- b. FNOTE – An example of a magnet that is accessible but not grippable could be a magnet that is recessed.
; a7 g4 d( U H" S0 i1 ~8 rc) Wooden toys, toys intended to be used in water, and mouth-actuated toys shall be tested according to! a; f, w1 U" |# g! F% Y
8.9 (soaking test) before being tested according to 4.23.2 b) above.( H. ?; g9 M$ x
4.23.3 Magnetic/electrical experimental sets
+ f7 E4 `. V" N G9 ]. W) JMagnetic/electrical experimental sets intended for children over 8 years shall carry a warning (see 7.20).
4 c h( P+ Q, W3 z3 L" wEN 71-1:2005/prA8:2008 (E)* @% ]# F/ `- V& ^1 Z+ b; S* R
Add a new clause:# b) c$ Y/ o7 W) Z9 ]: F3 ?
7.20 Magnetic/electrical experimental sets (see 4.23 and A.51)# c, g5 a1 d7 B' N
The packaging and the instructions for use of magnetic/electrical experimental sets shall carry the following* z6 K5 D9 `' ?* I* ?
warning:
$ U2 R/ }# k% O- _" c9 Q! ?" h% O“WARNING! Not suitable for children under 8 years. This product contains (a) small magnets(s).# i0 B- T$ V( z) r
Swallowed magnets can stick together across intestines causing serious injuries. Seek immediate Z" r4 ^0 l2 ]0 V7 e [
medical attention if magnet(s) are swallowed”.# S" ~+ h: L) g2 ]$ e- q
Add new clauses:
& B* v$ K2 I0 R" r: M @$ E: _8.34 Tension test for magnets (see A.51)
% ^ e1 V; T: D% q' V0 j8 c8.34.1 Principle
8 F1 k0 P% z6 WEither a magnet or a magnetic component, or a reference disc, is used in order to test whether an accessible: I. o/ }/ U5 u5 C6 h( u5 q- E
but not grippable magnet in the toy can be detached by a magnetic pulling force.
) `! U: e' M; w+ V8 |The test shall simulate the intended or a reasonably foreseeable play pattern.) ^0 p3 k3 W% ~ ?0 h
8.34.2 Toys that contain more than one magnet or magnetic component
$ z6 |: ^8 U6 j) C$ g, \Identify the magnet or magnetic component in the toy that is most likely to be able to detach the magnet that is* ^- ]0 h( H" x) Z- v
to be subjected to the tension test.
% C, P& r+ E4 `& vWithout damaging the toy, place the magnet or magnetic component as close as possible to the magnet to be
3 ]& J% M# z# P. C" V [" S! [tested. Gradually apply a pulling force to the magnet/magnetic component until it separates from the tested, D# w' J5 A+ Q6 s% f# H8 Q
magnet or until the magnet is detached from the toy. Perform the test 10 times.9 d) F( s4 v! B4 ^+ D
Repeat the procedure for any other magnet that according to 4.23.2 shall be subjected to the tension test for
. v8 X9 z& ]# d* F. Y8 Y# h' ~! Qmagnets.9 u/ L" L1 S( V$ \
NOTE – If it is not possible to determine which magnet or magnetic component(s) in the toy that is most likely to be able to3 U% b. f% b) e6 [
detach the magnet that is to be subjected to the test, it is permissible to repeat the test with another magnet or magnetic, e6 l1 d c; [# ^# V
component from the toy.' |, [9 q9 V$ ^' ^0 y: N5 {# J2 }( d
8.34.3 Toys that contain one magnet only6 s, O" w6 }; ]0 i. ~& ]* \
8.34.3.1 Apparatus
8 r3 x# f" P) XA nickel disc with a minimum nickel content of 99 %, and having the following minimum dimensions:
9 Z/ x* F: M8 l0 e% M/ h- diameter (30 ± 0,5) mm
- `2 ]0 q `( e0 @- length (10 ± 0,5) mm2 u+ X# N4 p% u W
and having a surface roughness Ra according to EN ISO 4287 which is not greater than 0,40 μm.
0 j! u5 U' \& F* {& K8.34.3.2 Procedure! n: K, U% ]9 {3 I" a3 P- P5 J7 O
Without damaging the toy, place the flat part of the nickel disc as close as possible to the magnet to be tested.
0 |, g5 T8 X" s J( o# DGradually apply a pulling force to the disc until it separates from the magnet or until the magnet is detached
/ Y* b+ t' N5 k0 Y0 ^, b7 Kfrom the toy. Perform the test 10 times.
2 R5 d4 @! c. y% h* w3 UEN 71-1:2005/prA8:2008 (E)8 o% K% ?5 q( h' v, w( A
6
$ u' c* n! i1 a) e8 z. B9 l8.35 Magnetic flux index0 ~; \) e' d2 L B- P7 |6 h! v
8.35.1 Principle t, t; w0 H; _- x! X
The magnetic flux index is calculated based on the results from measurements of the flux density and the pole
& {, O5 A/ q9 G6 \6 s/ G( ~surface area.
' k0 Z8 s0 Y4 T0 S9 Y% l8.35.2 Apparatus9 Q' y+ i- Y1 j) V! N( X/ L: h
8.35.2.1 Direct current field Gauss meter which is capable of determining the field to an accuracy of 5 G.
0 ^ l, p( A: j3 O8 l* D( \1 E, e/ }The meter shall have an axial type probe with
; `' w! A3 {, k' |3 Y- an active area diameter of (0,76 ± 0,13) mm
2 r' w6 }0 _5 }8 F: a. ]" M- a distance between the active area and probe tip of (0,38 ± 0,13) mm./ b/ Q2 V0 c& R/ s4 F
8.35.2.2 Calliper square or similar device capable of determining dimensions to an accuracy of 0,1 mm.
$ y5 q1 x4 ?6 z& d/ X8.35.3 Procedure
" n s& G+ N! p* ^ h8.35.3.1 Measurement of flux density
" i7 f5 Z: `3 A2 ]# d. j7 \! vPlace the tip of the Gauss meter’s probe in contact with the pole surface of the magnet. For a magnetic
, k) {7 D T, c5 c# `% ecomponent (where the magnet is fully or partially imbedded in part of the toy), place the tip of the probe in5 {) {, @3 w1 f
contact with the surface of the component.) R% F, M2 b* @8 q$ M
Maintain the probe in a position perpendicular to the surface.' O8 f3 s* O' P# h0 @6 f* K& {
Move the probe across the surface to locate the maximum flux density., A9 C# w" n$ a6 l5 k- a
Record the maximum flux density with an accuracy of ± 5 G.
: h0 k2 a- |' c0 W8.35.3.2 Measurement and calculation of the pole surface area
4 Z) u! ~! q, ~- k% pIf the magnet is imbedded/attached as part of a magnetic component, extract the magnet from the component* ~& {0 F6 l4 z8 e `+ m
even if it is necessary to break the toy.* d* h# K1 J) ^% E( u
If the pole is not flat (for example, hemispherical), measure the maximum diameter of the magnet
1 E- P9 v; O; r# p4 C5 ?0 a3 iperpendicular to an axis through the magnet poles (see Figure xx), with an accuracy of ± 0,1 mm and
# L, ~2 X3 Y: n# Ecalculate the area of the corresponding cross-section.
9 ^/ v; q9 Q0 tIf the pole surface of the magnet is flat, measure the dimensions with an accuracy of ± 0,1 mm and calculate
2 w6 J0 y' q y# pthe area using the appropriate geometric formula. U# ~+ [ E: c* b3 S* @+ t
For multi-pole magnets measure and calculate the area of the largest single pole, which can be identified
2 ~8 y6 w7 M5 [using magnetic field viewing film or equivalent.7 Z/ t* j9 x& V. R' {& a
NOTE – An example of multi-pole magnet is a rubberized/plastoferrite magnet, consisting of multiple strips of- r6 X* b; N+ C+ P' |
poles.2 o' g3 O# k6 Y* _! T4 d1 y" e
8.35.4 Calculation of magnetic flux index- N; A- m' E( o
The flux index (kG2
4 t4 \2 e! E0 Emm2) is calculated by multiplying the calculated area of the pole surface (mm2) of the& f9 m Q- t6 w5 E+ c
magnet by the square of the maximum flux density (kG2)., u5 Z$ E$ _3 w3 a4 C
EN 71-1:2005/prA8:2008 (E)" V# s2 m$ r. q+ Y- Q1 E
Key! h, Y2 ^) I) e- w
1 Maximum cross-section perpendicular to the axis
" g* Y4 T9 t8 w% t, l# j( P4 ^2 Axis through the magnet poles
" m; W6 i* L: w' zFigure xx – Maximum diameter of magnet with a non-flat pole
, T5 c* w" @7 C; yAdd new clause in Annex A: B( H" U) J9 i8 p% I; _( g+ ]
A.51 Magnets (see 4.23)% o# C7 [3 T0 w% ^8 V9 X
These requirements are intended to address the hazards associated with ingestion of strong magnets (e.g.) T( f5 A! v# q9 p) A
neodymium iron boron type magnets), that are capable of causing intestinal perforation or blockage. These
0 r/ n5 G: t1 ^7 W. z' |hazards are additional to those associated with small parts such as suffocation or asphyxiation (see A.26).6 L! j' Q V; x. z
The requirements apply regardless of the intended age of the user.
0 E* H6 M: x0 d* Q2 QMagnets found by children can be ingested. If more than one magnet, or one magnet and a ferromagnetic
& \. j7 U0 m, J6 ^. R& M+ nobject (for example iron or nickel) is ingested, the objects can attract to each other across intestinal walls and
0 F" S# P& n% f: {' Q% K" `' Lcause perforation or blockage, which can cause severe injuries that may be fatal.
0 ~# Z0 n/ E( g4 B8 w6 HSeveral accidents, including one fatality, have been reported involving ingestion of magnets resulting in
4 f) i. {5 Q' }1 Jperforation or blockage of the intestines. Most accidents have occurred with children between the ages of 10% `: ~, @1 L$ l5 N$ ?- q6 J! ~# I
months and 8 years. The majority of the accidents involve strong magnets used in magnetic building sets and ]8 V' V! q5 e6 k3 T3 H
in several cases surgery was required to remove the magnets from children’s intestines. Medical signs
$ ^- k: s0 B/ J7 o- Lassociated with intestinal perforation or blockage can easily be misinterpreted since many children exhibit only& S5 ^% W6 v% e. u0 ?9 |& x) G" U
flu-like symptoms.
" A: D' g3 G; M( H: A6 p1 oFor the purpose of this standard, magnets or magnetic components that could be ingested are identified by) s/ }/ ^1 G2 S( O, V/ m
using the small parts cylinder. The small parts cylinder was originally designed for identification of small parts
. C: U( D; x: o! |2 {) \in toys intended for children under 3 years, which are capable of causing suffocation or asphyxiation. It was& B. L9 \# B# x, A" K$ Z
not designed for identifying objects that can be ingested by older children. The decision to use the small parts0 a: P9 v) H9 }2 ~" g
cylinder also for assessment of magnets or magnetic components that can be ingested was made for practical$ A, S9 L( R1 J, V& P- a
and precautionary reasons: The cylinder is a well known test template and it provides a safety margin since; j: p) T" U1 V- e# W3 @* ?3 g
the magnets and magnetic components that have caused accidents all fit entirely in the cylinder with a large5 T' h( P; d5 b& r, M
margin. The same principle has been applied in the requirements for expanding material.
" Q- b$ g9 [1 j9 ]3 oThe risk of magnets attracting each other across intestinal walls is reduced with decreasing magnet strength.
' {, Y! A9 [+ a$ B) {A limit value in the form of a magnetic flux index has therefore been introduced to define what a sufficiently2 C7 }1 c6 l: b, T
weak magnet is. Accident data indicate that only powerful magnets have been involved in all known ingestion
6 |( r7 d" S. W& U2 h( V6 aincidents to date. The data also suggest that magnet ingestion was not a problem in toys until powerful2 y* [* ]) J8 O: D h5 y
EN 71-1:2005/prA8:2008 (E)
$ z: M- @$ S* U# V! M8( c, i& x( ]9 Q8 \: Q: M1 M# v$ t
magnets (such as neodymium iron boron magnets) became cost effective and commonplace several years e Q3 x( Y1 W5 p) `9 Z5 M$ T
ago. Ceramic, rubberized, and ferrite magnets have substantially lower attractive forces. A limit value for the! ?7 |9 [' K+ X
magnetic flux index of 50 kG2mm2 (0,5 T2mm2) is considered appropriate to ensure, with a safety margin, that
1 Z( J* | b k) ~! ]powerful magnets of the type that have been involved in incidents will not be permitted for use in toys if they fit
. i7 ]4 @& s" A1 |4 eentirely in the small parts cylinder. The one known fatality occurred with a magnet from a magnetic building7 u- m- E1 K' x
set with a flux index of 343 kG2mm2 (3,4 T2mm2). By introducing the flux index limit the risk of injuries with: N) w) x/ i. Y/ `, [/ t9 B
magnets has been minimised. New data in the future will be used to assess if the chosen requirements are0 o6 l3 p/ x% M
still appropriate.
& L0 h* m6 E! HMore than 80 % of the known accidents have occurred with magnetic building sets. Magnetic building sets are
( u- y' h; {/ ysubject to the requirements in this standard.5 E1 H1 _& o7 E: k) ]+ ^
Other considerations were taken into account in evaluating the risks associated with ingestion of magnets.2 S, f6 i3 L& F
Perforation of intestinal walls can occur if the blood supply to a part of an intestinal wall is cut off, for example
" q+ `# M0 e; l7 P. H: p7 q( ^by the pressure exerted by two magnets that are attracted to each other across the walls. According to a
+ E: W" `9 o, g# itheoretical medical study, a pressure of 0,0016 N/mm2 (12 mmHg) could, in a worst-case situation, cause
# w8 R8 H: y: Z: [1 f5 P5 vsuch a cut off of the blood supply. Virtually all magnets on the market are capable of producing this level of
1 c# N* D7 Q8 U! f8 lpressure.9 M7 g: Q$ Z" |6 [, |5 c4 u7 n; s
The probability that two weak magnets (flux index below 50) will be transported through the intestinal system A( p, u7 d2 ~
and end up on opposite sides of the intestinal walls at a position where the intestinal wall is extremely thin is
/ t' S- \) s2 k! t: @6 econsidered to be very low. It would require not only that the two magnets are ingested on different occasions! u2 i \$ G0 J& t
but also that the intestinal contents do not prevent the magnets from travelling along the walls and eventually
$ r1 z- w3 x) jfinding each other on opposite sides of two walls by accident. For strong magnets the situation is different,- |& ?2 r4 W0 r! C/ K
since they attract each other over a longer distance with a force than can overcome obstructions presented by# P [+ Q3 b' o. H( x0 U( C9 k; u* C$ ~
e.g. intestinal contents.
% W6 ]9 [( e* M1 \, b% \Furthermore, for a correct calculation of the magnetic pressure, both the flux density and the contact area0 r0 c5 T' H+ f# a
need to be measured. The formula to calculate magnetic pressure is:
# N( L* x+ O; BAc
$ d9 |! L ?7 p1 |( iP Ap ⋅ ⋅0 p4 t$ K U' }' o3 @; O
=
$ ^, x7 z, U) e5 S# i- dα B2# s7 i3 |; X, w# z& x, n. O# S
where, _) \- ?6 k* g
P is the pressure; P) \/ X: y- H: O7 N% v- Y
α is a constant% N/ X7 d$ P8 S3 L7 z$ P* @( Q
B is the Flux density (in Gauss or Tesla), and
% e4 D8 `/ d$ v$ r6 [Ap is the pole area of the magnet
* s5 J6 D. I/ S) x6 EAc is the contact area between the magnet and whatever surface the magnet exerts the pressure on+ v3 E( _7 d; ^0 h# O1 ?& _
The contact area between a magnet or a magnetic component and the object to which it is attracted, is often) ~1 o; B7 ]6 F2 k" u+ b
very difficult to measure accurately due to unevenly shaped magnets or magnetic components.* G/ D f3 l* v! Y
The flux index, however, can be calculated using the pole area of the magnet and the flux density at the$ [6 ]! A; _. w
surface of the magnet or magnetic component. The flux index is therefore presently considered to be the best. L7 @ ^8 D' x! w* l( C- x
available measure for classification of hazardous magnets.
1 M# n9 I$ z! w7 @" zTwo or more magnets can attract each other and form a compound magnet with a higher flux index than each
8 { x7 s* }! E, K% x1 _" k& bsingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the
, M6 X$ a r1 Iincrease in flux index will be relatively smaller for every new magnet that is added and will depend on
2 N! Y5 A9 _0 D0 e9 ]0 dmagnetic material, shape, cross-section etc. Ingestion of multiple magnets has only been observed with6 P( V8 X1 C. U2 A# }
stronger magnets and there is no accident data regarding weak magnets close to the flux index limit forming a
! Z4 d; J' t4 v1 g(stronger) compound magnet. Therefore no additional test method for compound magnets is introduced.
( T) O& j& X% i4 d" y+ `6 YToys that contain magnets and which can be expected to become wet during normal and foreseeable use are1 f+ a7 |/ D) a# K4 j
subjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also wooden toys( n, ?% s1 K$ r2 `- X; k1 `
EN 71-1:2005/prA8:2008 (E)5 I2 }/ N' D& W0 ~+ l1 g
are subjected to the test since the properties of wood (such as size of holes) can change even with changes in1 M& j' Q2 t) F5 O. P2 R3 _
air humidity.& B4 p! ]/ T9 g8 @5 M$ I
In some cases magnets are recessed and can therefore not be subjected to the normal tension and torque$ q: M: h T" K3 r# m6 \
test. Examples of toys have been found where a magnet has become detached by another magnet. A tension
5 e' `; z. P: j c% U! Ftest for magnets has therefore been introduced to minimize the risk that such magnets become detached( R/ d0 q; i# J6 S( X# r6 Z6 V+ g3 [
during normal and foreseeable play.# x F C# r; a9 ~
Functional magnets in electrical or electronic components of toys are not considered to present the same risk2 T: l- R9 D! ?( o
as magnets that form part of the play pattern. The use of magnets in these components may not be
8 V% x, u# C; R! a( vrecognized, as they will be present inside electrical motors or in relays in electronic printing boards. None of, \( j5 ~7 E* F7 b
the reported accidents has been linked to magnets released from electrical or electronic components
- F1 c8 C( `$ B5 U* t5 HMagnetic/electrical experimental sets that are not intended for children under 8 years are excluded from the
Y' Q$ K$ a) ~- d. O* prequirements provided that they carry a warning. The exception applies only to the more advanced6 ^3 o# l. R1 c0 P8 i
experimental sets that include building of electrical motors, loudspeakers, doorbells etc., i.e. products that- Q: l$ p! R q+ O7 ^' @$ K2 R" g
need both magnetism and electricity for their function. |
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2009-4-27 13:11
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡