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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
! X! D5 o5 S7 Pbe permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,; E6 x( q6 i/ [1 I( D* u
the risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit9 R( I7 ?2 a9 M7 `+ J6 U
will be assessed to determine whether it is still appropriate.( n& [0 S2 J7 D7 Q5 d2 t
Two or more magnets can attract each other and form a compound magnet with a higher flux index than each
- {7 B/ z8 V9 F: v0 Y5 tsingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the
& @6 ?$ a4 v. \increase in flux index will be relatively smaller for every new magnet that is added and will depend on" P8 Z' |1 n5 o
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with5 R5 P7 m. P1 f' g* E( K7 x* n
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a9 {% [, G4 t$ {) b$ D
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
' p) [: _5 Q5 Z9 y' E. o* v( bToys that contain magnets and which can be expected to become wet during normal and foreseeable use are6 _! x6 q7 N$ Z5 |% h) N: k8 k
subjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden
6 P7 a/ f0 [3 etoys are subjected to the test since the properties of wood (such as size of holes) can change even with" C: X; o C- O2 ]
changes in air humidity.# Y& e( [- l& Y! f' T/ V
In some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension3 O. E0 _. T6 Z7 a4 j
tests. Examples of toys have been found where a magnet has become detached by another magnet. A5 u( R+ Q, F' _
tension test for magnets has been introduced to minimize the risk that such magnets become detached during
4 X) y& t, x/ N; O1 X" C* s& |' p9 [normal and foreseeable play. n3 m6 U8 H0 F) Z" |- g1 Q1 k
For toys that comprise only one magnetic component, that toy is considered to meet the definition of a
. c3 i7 x2 c5 Kmagnetic component (see 3.xx).
+ P8 Z I9 h! }) A7 ]5 @3 YFunctional magnets in toys are not considered to present the same risk as magnets that form part of the play
$ _( ~: s% U$ X; B: p! Ipattern. The use of magnets in these components may not be recognized, as they will be present inside2 `" N! W; i/ r# d! t g- w; l
electrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to' }+ w; i0 I$ X8 J% [) z$ d
magnets released from electrical or electronic components.- p1 P+ s. L9 e* |0 ~( }
Magnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the# p% p2 Y5 H! D2 F. L3 q ]* r% i7 ~8 A
requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
% h' | i. }. t: F; konly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,- o9 F6 P" Q9 L
etc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical3 Y7 e" T- k- s+ j# P0 ]
experimental sets that are intended for children under 8 years are, therefore, required to comply with the
; l0 X; r9 Y8 S: b; Urequirements in 4.30.2..5 p& ^5 ^; B, _
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