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发表于 2012-11-12 08:54
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T2mm2) are considered appropriate to ensure, with a safety margin, that powerful magnets of this type will not
( j1 f/ }% i# g5 S, ~% @' ? fbe permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,* Z1 j! v; P! E: I
the risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit
5 g5 a" P9 C. T6 Q+ X' Jwill be assessed to determine whether it is still appropriate.
8 Y o3 ?: d9 ?; e+ e; |Two or more magnets can attract each other and form a compound magnet with a higher flux index than each: _+ W8 \& w# ~0 k/ k4 B$ z
single magnet. The flux index will not double if two equally strong magnets are attracted to each other and the6 F4 m4 P; t3 ]' W
increase in flux index will be relatively smaller for every new magnet that is added and will depend on5 B) T" G4 T6 W d8 h k* r
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with) _+ Z! f& O( T4 s. ~
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a
7 T% Y" e+ F! S' v(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
. ~" b4 l2 k. Y! x# xToys that contain magnets and which can be expected to become wet during normal and foreseeable use are
" }! S' r# v* v$ ~0 xsubjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden# M8 Z: w2 x5 V: J6 b8 o
toys are subjected to the test since the properties of wood (such as size of holes) can change even with& H: ~4 l6 x& {# L0 G4 R
changes in air humidity.' R$ e% A9 a2 W* D" e, _
In some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension V; v B3 [/ w# V U
tests. Examples of toys have been found where a magnet has become detached by another magnet. A, Q p5 K& M, p, ^8 ~7 t4 |8 t7 H' [; L
tension test for magnets has been introduced to minimize the risk that such magnets become detached during9 a: C+ O. g$ [/ `) m6 \
normal and foreseeable play.& |3 q% N7 V1 s& l# t
For toys that comprise only one magnetic component, that toy is considered to meet the definition of a g2 f n- k1 W
magnetic component (see 3.xx).
3 N, D3 v; T/ t' W; @% LFunctional magnets in toys are not considered to present the same risk as magnets that form part of the play8 d* x# C0 @. U8 y2 b
pattern. The use of magnets in these components may not be recognized, as they will be present inside
, q6 A1 k1 ^6 O2 t( C! _- Aelectrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to, X2 P. e& J! D& h
magnets released from electrical or electronic components.9 Y: Y# G$ u9 j7 ?! z- {8 @
Magnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the8 ~5 B w& w* @% f: K1 F( K
requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
' W2 K+ `. `2 s. |% donly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,( @7 ~1 z' C9 J2 G7 ^* @8 D
etc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical
+ Z9 e# I$ s% A8 |9 Bexperimental sets that are intended for children under 8 years are, therefore, required to comply with the* l4 r+ W O; \# k: j2 W
requirements in 4.30.2.. U' p" Q! p2 l6 T" B! \5 m( I% b
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发表于 2012-11-12 14:43
