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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
J3 Z! \; Q4 ~0 x* T2 }& L- @: M9 [be permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,
9 U# [5 m& M2 j3 f& d$ E* m: dthe risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit
1 H- e8 v# Y. W* g7 g: Swill be assessed to determine whether it is still appropriate.
' l; J+ S2 B6 |" e: Y' V% cTwo or more magnets can attract each other and form a compound magnet with a higher flux index than each
$ b2 E [! `' t7 d" Xsingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the8 y- k" p+ L" j* `# k* \3 R
increase in flux index will be relatively smaller for every new magnet that is added and will depend on. X( o1 S; c9 R6 F* a0 |
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with
2 c; w* H; a0 m' vstronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a) h; v. z, U& F# H8 h" t, @
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
1 E$ B* K. o4 A! C8 K' l4 \Toys that contain magnets and which can be expected to become wet during normal and foreseeable use are
p& x! X" D2 X5 g$ b, B2 psubjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden
x" g- C% i7 T* y( B) A/ h: Gtoys are subjected to the test since the properties of wood (such as size of holes) can change even with
: y5 Q' ?2 T, L2 e9 {changes in air humidity.
- V1 \3 x$ r i, u t f+ s# gIn some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension
1 e- ^$ M, K$ J, s$ @$ u ^& }tests. Examples of toys have been found where a magnet has become detached by another magnet. A
6 f* I. L+ ], \' l) Vtension test for magnets has been introduced to minimize the risk that such magnets become detached during# F3 M% E: t) e* r. e$ _ K# b
normal and foreseeable play.+ n4 q, v# u9 `* v, t& ^
For toys that comprise only one magnetic component, that toy is considered to meet the definition of a( E) s5 }5 p! \! Z/ T7 D
magnetic component (see 3.xx).
) I8 J- z' v5 H( ]. j) ZFunctional magnets in toys are not considered to present the same risk as magnets that form part of the play. z1 _6 t7 u5 b! A
pattern. The use of magnets in these components may not be recognized, as they will be present inside" `$ {; f' U2 S
electrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to9 \/ v! D% h& A. m, ]
magnets released from electrical or electronic components.. p7 @1 B e: t/ l; W& w: M
Magnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the3 I, i+ g' h9 o+ b1 {
requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to+ P# [- `$ {. y6 b `6 G
only the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,
! g) n7 J8 k @6 o1 T$ a; F" M- qetc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical
) n% J( S( {& @2 ]experimental sets that are intended for children under 8 years are, therefore, required to comply with the
$ W8 ?5 B7 Z& S% `requirements in 4.30.2..
5 {* ~* R; ~8 N4 F7 u6 f* b& b--`,`,``,,`,```,```,,````,,`,,`-`-`,,`,,`,`,,`--- |
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