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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
: h2 u! |0 s/ \: G+ L$ ^; zbe permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,
- J* d0 \5 t$ ]5 T8 Qthe risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit( P0 R! R* Q0 e1 A4 c
will be assessed to determine whether it is still appropriate.
* D1 d6 J7 S9 L6 ]# NTwo or more magnets can attract each other and form a compound magnet with a higher flux index than each
; U, J4 o4 {! E) a9 Z9 E: dsingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the6 A* z* ]: ~ O6 P+ W/ I, V. M) ?
increase in flux index will be relatively smaller for every new magnet that is added and will depend on B. o5 p5 [( \3 {; _8 F
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with
% N% O: I8 u& }) O5 ]: Y Cstronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a) |$ G" o- c& C9 t6 v) x
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
& Q* w$ k* D2 BToys that contain magnets and which can be expected to become wet during normal and foreseeable use are Q# S/ g8 U% q0 r! G
subjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden% F' ]( ^- K! l8 n
toys are subjected to the test since the properties of wood (such as size of holes) can change even with9 m. e3 @% T3 d" F, \6 A5 Q- w
changes in air humidity.: ~1 d h6 h; O$ j7 A2 d) i* k' `" L
In some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension
- z( t6 D7 _) Z3 _1 ]0 O+ Ztests. Examples of toys have been found where a magnet has become detached by another magnet. A
) C6 l7 D) H! {: L/ L5 G) ntension test for magnets has been introduced to minimize the risk that such magnets become detached during& a4 `5 i5 ]3 i9 }- y: ]0 s) v
normal and foreseeable play.
# C& V& C0 j; t0 r& O) o) zFor toys that comprise only one magnetic component, that toy is considered to meet the definition of a$ \* v( Z7 k i1 o, W+ o
magnetic component (see 3.xx).; s% S- Y+ h7 E% k0 ]$ P
Functional magnets in toys are not considered to present the same risk as magnets that form part of the play& ~ z" t& Y: N3 W* @0 \
pattern. The use of magnets in these components may not be recognized, as they will be present inside$ p8 t8 R$ r: B4 K( U% N
electrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to1 ?2 O" j) v6 z5 L( X7 ^
magnets released from electrical or electronic components.
+ ?" _( V6 a8 `- N8 ?4 Q9 I6 X* Y OMagnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the
8 N! }+ C- S# B$ j! A! y) Grequirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
# w" i! J7 u4 T% Bonly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,
( K$ h% [! ~( \etc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical
! S* t9 \0 N W( [9 zexperimental sets that are intended for children under 8 years are, therefore, required to comply with the/ F" z4 a0 e; X* N
requirements in 4.30.2..
' B$ d T3 z& }9 w* C& D! u--`,`,``,,`,```,```,,````,,`,,`-`-`,,`,,`,`,,`--- |
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发表于 2012-11-12 14:43
