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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
m- B! o* R; V r$ gbe permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,
6 E' z# N; t- {0 ^4 D( Vthe risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit: n- K8 M9 K3 ^3 }+ j3 S" }- ]; I& m
will be assessed to determine whether it is still appropriate.
- C- e" [' L" M* h, Y' R3 cTwo or more magnets can attract each other and form a compound magnet with a higher flux index than each
: c8 G: Q- {; b; U3 ? ^$ Osingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the/ L1 Q$ k; l, B
increase in flux index will be relatively smaller for every new magnet that is added and will depend on
8 b# N' t0 m `& p/ S. Xmagnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with) T( o* o) I) x# [3 p
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a) q- K D: }, Q& j8 _
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.& K! Y) i& Z( {, ]" w. P% r
Toys that contain magnets and which can be expected to become wet during normal and foreseeable use are8 U: x5 ?0 D8 S0 ^
subjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden. c9 W5 Y4 L: n: f N; Y4 p$ i- y, u
toys are subjected to the test since the properties of wood (such as size of holes) can change even with
9 X" O- C/ Q) u) ?' C6 cchanges in air humidity.
# _9 J1 i' x' j0 h" c/ dIn some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension
. v9 p9 {6 ~+ U& x6 P3 gtests. Examples of toys have been found where a magnet has become detached by another magnet. A
# K; o k' b) g( C# |tension test for magnets has been introduced to minimize the risk that such magnets become detached during- o& K- @/ \, L8 [
normal and foreseeable play.
1 ]+ r6 u# ?) Y! Q$ c- [0 @, ~For toys that comprise only one magnetic component, that toy is considered to meet the definition of a
2 {7 X2 l( B: e2 O% {magnetic component (see 3.xx).- N- S+ b1 a' g
Functional magnets in toys are not considered to present the same risk as magnets that form part of the play
6 R: _1 ^5 r. U. ~8 c$ w3 \) L) apattern. The use of magnets in these components may not be recognized, as they will be present inside
; r: W( Q6 O% ]" belectrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to$ e, u" [4 g, H6 c5 b. L
magnets released from electrical or electronic components.
! i5 K: ?' R4 C: g0 oMagnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the6 x3 K8 _( p) f1 h# Z: W( M
requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
+ A) a$ W3 w6 M& q U4 Zonly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,
# I4 h8 b4 s; J! [/ P2 \1 B" ^etc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical
[. ^& J0 m( ~1 zexperimental sets that are intended for children under 8 years are, therefore, required to comply with the" F; d* K# I* z/ Y, N, H
requirements in 4.30.2..
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发表于 2012-11-12 14:43
