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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 not8 D7 J: g. B1 I2 u4 V& Z
be permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,. n [# L& r% [- p8 G
the risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit% r) E: D. c$ U( ~( E
will be assessed to determine whether it is still appropriate.
2 A. T" R, s9 o6 OTwo or more magnets can attract each other and form a compound magnet with a higher flux index than each
! v( c8 C9 X, q F: Vsingle magnet. The flux index will not double if two equally strong magnets are attracted to each other and the
/ z6 _, X8 V" L# v- @increase in flux index will be relatively smaller for every new magnet that is added and will depend on* f* @4 {7 A6 J) T6 l% Q- j
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with K5 }% y9 N ?9 j% l
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a
5 ~" [$ r2 Y' M6 i5 g" g(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.+ c1 U' |' ^ c, I
Toys that contain magnets and which can be expected to become wet during normal and foreseeable use are
, e2 C6 t* x" Msubjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden/ A6 k8 D0 z& I0 t4 u" {1 ^
toys are subjected to the test since the properties of wood (such as size of holes) can change even with/ }" c: x7 l, A- L/ m; J: p
changes in air humidity.
8 I* F* Z! [: FIn some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension2 I: j& p) G W
tests. Examples of toys have been found where a magnet has become detached by another magnet. A
9 Y9 o7 }- |; @# h. J9 E& q/ Vtension test for magnets has been introduced to minimize the risk that such magnets become detached during
& [; `' V0 a' ^' g4 i" unormal and foreseeable play.0 P3 [. l) Z: _; y! `/ x. q" j
For toys that comprise only one magnetic component, that toy is considered to meet the definition of a
! V: K3 ]3 z+ e1 gmagnetic component (see 3.xx).2 O! |8 i% F4 H4 G8 ?- g
Functional magnets in toys are not considered to present the same risk as magnets that form part of the play" B+ T6 Z, n) k8 W8 q+ z+ w
pattern. The use of magnets in these components may not be recognized, as they will be present inside+ |0 f0 S) D& j' Y/ R& K: i
electrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to. l( X$ J4 |$ M$ Y$ ~& d
magnets released from electrical or electronic components.
- a* C8 d& k# V8 W8 O% s/ U7 RMagnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the
, T9 H# ]3 z+ srequirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
7 Y) e* ~! ]/ j' L3 R, U: v. ]) sonly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,
. S' H& P* ^3 b; y7 W" ]/ u8 setc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical: _1 s# v$ h/ t/ E- B P
experimental sets that are intended for children under 8 years are, therefore, required to comply with the
3 {, [4 ?' W4 I F- I* n3 |: j4 Z4 xrequirements in 4.30.2../ g: v+ |, L' U) p
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发表于 2012-11-12 14:43
