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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 not7 O, j g2 T' Q( B; j
be permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,- K9 R" {3 w: \; Y/ K
the risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit
0 Z/ _& z: Q- L/ u0 J! z& fwill be assessed to determine whether it is still appropriate.% j0 V# ?& a& z: r
Two or more magnets can attract each other and form a compound magnet with a higher flux index than each( L, R% u( Z0 t
single magnet. The flux index will not double if two equally strong magnets are attracted to each other and the" S, | u. l4 F7 s3 f
increase in flux index will be relatively smaller for every new magnet that is added and will depend on
* O& R! A6 |# K$ N1 q; ? D6 ]magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with' C8 h& n/ @; ^, @: q9 T) F5 Q
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a$ G: I3 e# g% {
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
" c( W( t* @7 d/ DToys that contain magnets and which can be expected to become wet during normal and foreseeable use are
+ F! b. X0 W) S; x1 Ssubjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden
& N! w9 O$ r) N/ l2 f9 Rtoys are subjected to the test since the properties of wood (such as size of holes) can change even with
M* m+ X1 u2 L5 x. ^& _changes in air humidity.
) T- e A. d5 A) ^ QIn some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension# N0 |! E) F, r+ {2 Y
tests. Examples of toys have been found where a magnet has become detached by another magnet. A
" w' a7 f: [ N% jtension test for magnets has been introduced to minimize the risk that such magnets become detached during8 N9 X7 K% }" O3 t7 _: ~% K! M
normal and foreseeable play.
N* }* A! y8 I+ F/ x# c3 V! kFor toys that comprise only one magnetic component, that toy is considered to meet the definition of a0 ~2 }" c; @$ p$ j) x. N
magnetic component (see 3.xx).2 ~& i6 L+ g$ n0 c3 o
Functional magnets in toys are not considered to present the same risk as magnets that form part of the play
1 ^: y1 N* N/ W& O- A/ _/ o( Z2 Q& bpattern. The use of magnets in these components may not be recognized, as they will be present inside
: N4 I1 B8 _$ X) F; Lelectrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to9 X" O0 {# z* k9 ^
magnets released from electrical or electronic components.* T }6 Z4 W+ [3 u+ U
Magnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the
* _& h, ]: ^! q9 g& O6 d0 ~. ~requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
# A+ l! s) u1 V! }$ @) S, O. tonly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,1 G& u( U) |: @( I
etc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical, S/ v0 O) \" W
experimental sets that are intended for children under 8 years are, therefore, required to comply with the$ a# |% _: {9 w$ Z' V9 [4 b
requirements in 4.30.2..& b" B+ e& r5 H% k2 `1 H
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发表于 2012-11-12 14:43
