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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
4 y+ e+ R1 I* C4 zbe permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,
2 k8 Z7 B2 [9 j6 hthe risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit, R- _8 ^ c* e8 G
will be assessed to determine whether it is still appropriate.. q8 l% Z: G5 `& Z* ?: r" ^8 D
Two or more magnets can attract each other and form a compound magnet with a higher flux index than each
0 h5 g+ m9 L/ |4 a4 s# ssingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the
/ k+ w/ W) @1 L r6 [increase in flux index will be relatively smaller for every new magnet that is added and will depend on ?, G3 z9 m7 A
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with1 |& F6 D9 v5 A. _
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a: U9 _* u& @4 M' n% E" E
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.% g* ?% K* _. l3 d( M
Toys that contain magnets and which can be expected to become wet during normal and foreseeable use are
' @, H4 r0 O$ r( Q( e2 }6 R; l- xsubjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden
/ T c ^4 v2 B+ S( xtoys are subjected to the test since the properties of wood (such as size of holes) can change even with
4 t2 P' m& c6 \! H; r/ _changes in air humidity.! k" c2 D4 u# {- E5 g/ D
In some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension# k m1 c# X A$ j' d
tests. Examples of toys have been found where a magnet has become detached by another magnet. A
# c+ D* g- A5 Ctension test for magnets has been introduced to minimize the risk that such magnets become detached during
% _6 v D& m& g7 j% pnormal and foreseeable play.
* \0 x1 ]: k8 I# [ b" h9 y, K: y% oFor toys that comprise only one magnetic component, that toy is considered to meet the definition of a, V( s2 R4 b. c0 } M4 E% f
magnetic component (see 3.xx).
0 _. E* N4 F7 }0 C, b; |( ~" u, iFunctional magnets in toys are not considered to present the same risk as magnets that form part of the play0 v9 j- u6 l4 B; g! Z) n a
pattern. The use of magnets in these components may not be recognized, as they will be present inside
y3 j! i4 r/ Relectrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to
8 t) [# s1 d. U/ I7 }' m& }1 \magnets released from electrical or electronic components.# T9 @- R9 k' O1 A! ?/ |! Y
Magnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the
w+ v, F" X* [8 ^( H! n- {/ qrequirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
% [( G' Q5 {6 _9 bonly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,
+ d i/ T1 O8 k9 Petc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical
& f" |" [8 m3 Y9 i0 K) Yexperimental sets that are intended for children under 8 years are, therefore, required to comply with the
7 N; c5 ^# Y9 `! ?9 Rrequirements in 4.30.2..3 ]0 o. G+ ]6 f9 P" Q8 N
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