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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
3 H, J6 G. x$ V& ~1 _be permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,& _# f- V2 w3 s3 A$ ?" ?
the risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit
" x5 W, A9 l: P) m0 b* o" Qwill be assessed to determine whether it is still appropriate.
% `. T8 F, `0 o1 `0 Z/ T; wTwo or more magnets can attract each other and form a compound magnet with a higher flux index than each
9 |9 b( t6 M9 y1 `+ ysingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the
: b. O: ?: D0 f- |. ~increase in flux index will be relatively smaller for every new magnet that is added and will depend on
& v& D& E- {7 Nmagnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with) ~" V3 H3 r, B+ t8 W6 `& {# A% q
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a6 w6 Z" l( W; G. B/ l7 j* j/ }: J
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
+ q) N6 ~5 V4 u5 g3 E% YToys that contain magnets and which can be expected to become wet during normal and foreseeable use are9 ]2 v( W ]. S
subjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden
: `4 d6 H. y7 U* A! g) i! Vtoys are subjected to the test since the properties of wood (such as size of holes) can change even with1 X( A) L3 `# p
changes in air humidity.
3 I* _' W; d/ C4 Y2 L4 SIn some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension+ A+ ?5 V7 g4 V0 e$ C/ w% l
tests. Examples of toys have been found where a magnet has become detached by another magnet. A# F4 a4 t* M9 R0 X/ a5 h; m
tension test for magnets has been introduced to minimize the risk that such magnets become detached during
! K/ B/ _: ^. E2 f9 h" \; Nnormal and foreseeable play.
/ |$ a% ?1 n0 `. c4 ]For toys that comprise only one magnetic component, that toy is considered to meet the definition of a) }( _+ j) v3 g8 u( C
magnetic component (see 3.xx).3 ?* P/ ?+ C8 r$ s. l1 N4 h
Functional magnets in toys are not considered to present the same risk as magnets that form part of the play2 A, L& V" `: [6 L3 s5 r/ `
pattern. The use of magnets in these components may not be recognized, as they will be present inside
6 j2 ]6 g9 k: N. J6 |6 G3 g# F ^3 melectrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to! ]# E) f; e& ^4 H2 h
magnets released from electrical or electronic components.
/ s! d; I5 P- t5 {7 ~; S3 b$ BMagnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the- m6 m, K5 k( ^9 ?9 s
requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to$ { I: {. n9 h% S# F' \# j+ c: M
only the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,4 n+ ~* @8 E, z. Y) A" Q, X5 j
etc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical7 I4 W$ ]$ h# r$ f7 {6 H2 a
experimental sets that are intended for children under 8 years are, therefore, required to comply with the
0 L# z0 {9 L7 D9 b' Y& brequirements in 4.30.2..6 x* S: J, T' _7 |, Y3 j- e
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发表于 2012-11-12 14:43
