安规网

 找回密码
 注册安规
安规论坛 | 仪器设备 | 求职招聘 | 国家标准 公告 | 教程 | 家电 | 灯具 | 环保 | ITAV 签到 充值 在线 打卡 设备 好友| 帖子| 空间| 日志| 相册
IP淋雨机 | 证书查询 | 规范下载 | 资质查询 招聘 | 考试 | 线缆 | 玩具 | 标准 | 综 合 红包 邮箱 打卡 工资 禁言 分享| 记录| 道具| 勋章| 任务
水平垂直燃烧机 | 针焰 | 灼热丝 | 漏电起痕
IP防水防尘设备|拉力机|恒温恒湿|标准试验指
灯头量规|插头量规|静风烤箱|电池设备|球压
万年历 | 距元旦节还有
自2007年5月10日,安规网已运行
IP淋雨设备| 恒温恒湿箱| 拉力机| 医疗检测设备沙特Saber 埃及COI 中东GCC|CoC直接发证机构水平垂直燃烧机|灼热丝|针焰试验机|漏电起痕试验机
灯头量规|试验指|插头插座量规|灯具检测设备耐划痕试验机|可程式恒温恒湿试验箱 | 耦合器设备广东安规-原厂生产-满足标准-审核无忧
查看: 2938|回复: 12
打印 上一主题 下一主题

[玩具标准] ISO8124

[复制链接]
跳转到指定楼层
楼主
发表于 2012-11-3 09:11 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
广东安规检测
有限公司提供:
本帖最后由 哥哥在家 于 2012-11-3 09:29 编辑
) N4 ^7 L- s( T5 ]7 |$ L
/ t. ^0 _4 V8 H( I% aISO 8124-1 AMD-2 2011 Draft
5 J& M5 R( F+ [! [& a1 @! MISO 8124-1 AMD-1 2011 Draft
; _1 k$ I. \3 E
0 ~9 q) H5 N+ ^- ?) b

评分

参与人数 1安规金币 +1 收起 理由
fasten + 1 未见附件,请重新上传

查看全部评分

沙发
发表于 2012-11-4 18:52 | 只看该作者
期待正式版! ISO 8124-1:2012
( G$ G8 [: K, F1 ]5 shttp://www.iso.org/iso/home/stor ... .htm?csnumber=62327
板凳
发表于 2012-11-8 16:47 | 只看该作者
更新哪些内容呀?
地板
 楼主| 发表于 2012-11-12 08:51 | 只看该作者
Contents Page
7 B5 `. a5 T1 A2 Z3 Terms and definitions ...........................................................................................................................3# w  [" t7 M+ ~/ d- A. h
4 Requirements........................................................................................................................................3: i6 u$ g; u: V- Y
4.30 Magnets and magnetic components....................................................................................................3: g$ E) a) s% Q  |6 Y8 ?; S
4.30.1 Magnetic/electrical experimental sets intended for children over 8 years......................................3
; ^" }  O' S: @4.30.2 Toys other than magnetic/electrical experimental sets intended for children over 8 years..........4) A1 E, |! }, i3 ^! G3 E+ n
5 Test methods.........................................................................................................................................4/ k" o! m. W) a
5.31 Tension test for magnets......................................................................................................................5
: t! o1 H$ o  R6 P) v( ^5.31.2 Toys with magnet(s) or magnetic component(s)..................................................................................5
8 A% L/ @; m0 _8 _$ n8 K6 S. |$ z5.31.3 Toys that contain one magnet only and a mating metal component...............................................5( o( y* V+ S* d* z1 R! n
5.31.4 Toys that contain one magnet only and no mating metal component.............................................53 w" d/ W2 w: j+ C
5.32 Magnetic flux index...............................................................................................................................61 p7 p' D; @  ~4 v
5.32.1 Principle.................................................................................................................................................6# `2 K" {. d4 a4 v7 O
5.32.2 Apparatus ..............................................................................................................................................6" ^# j) C; j! x& r6 ], p
5.32.3 Procedure ..............................................................................................................................................6: S/ f: L; r  F
5.32.4 Calculation of magnetic flux index ......................................................................................................7
' L3 n" c. z3 Y* b/ Y3 F5.33 Cycling ...................................................................................................................................................7# K* E2 s6 F3 ~  S8 \
5.34 Impact test for magnets ........................................................................................................................7: c4 Z/ C% a( v, {" E  }
5.35 Soaking test for magnets......................................................................................................................7
+ y+ `; e7 f. m7 K7 N" u$ pB.2.21 Magnetic/electrical experimental sets for children over 8 years ......................................................80 U* @. X. i# G- v; k
E.44 Magnets .................................................................................................................................................8

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册安规

x
5#
 楼主| 发表于 2012-11-12 08:52 | 只看该作者
3 Terms and definitions& m2 L6 k( o* j  T8 H9 H8 `
Add the following definitions:
; a8 u' c" N* K$ F3.xx9 J! P! c- E4 ?' g5 e! z2 e  x2 a
magnetic component
' J+ {) t' P; U# Y5 n' t! Iany part of a toy which contains an attached or fully or partially enclosed magnet* _! v/ s; U# G7 S' J+ _/ C; J& W! {+ y
3.yy
& }' i% @" v/ Mmagnetic/electrical experimental set! w- B) n# q$ j4 M8 z; x
toy containing one or more magnets intended for carrying out educational experiments involving both
  h  G2 ~- c/ f& O6 N) [magnetism and electricity
! z$ K  d( Y9 W3 p: i3.zz
( B5 }& h) G4 a8 e1 i' Cfunctional magnet in electrical or electronic components of toys
9 d. D2 T$ d: u8 v) k( a1 Vany magnet necessary for the function of motors, relays, speakers and other electrical or electronic
% h7 V9 d% k7 m0 {) w9 O6 f* zcomponents in a toy where the magnetic properties are not part of the play pattern of the toy! z$ B$ b% W& R/ j
4 Requirements( |, h5 c! W- Y# L% a
Add the following requirements:7 D* o/ J" B. H" m
4.30 Magnets and magnetic components
& V$ f, b1 t4 O( N5 b& j' dSee Clause E.44.
% i/ \$ [, O1 }" u1 m( Y4 A4.30.1 Magnetic/electrical experimental sets intended for children over 8 years
8 P: F+ K  S( @. lMagnetic/electrical experimental sets intended for children 8 years and over that contain magnetic/ Q: u1 f7 I" U+ F
components shall carry a warning (see B.2.21 for guidance) if they both:
5 G6 g  |" E+ J! O4 Y- have a magnetic flux index greater than 50kG2mm2 (0,5 T2mm2) when tested according to 5.32 (magnetic8 @; J+ {* j/ t  \' C" [
flux index)6 v/ |$ R- i, c" o5 ?5 s/ }0 ?
- fit entirely in the cylinder when tested according to clause 5.2 (small parts test)
  M8 u6 q* F5 X9 f& f1 U6 C8 jNOTE Magnetic/electrical experimental sets intended for children under 8 years shall comply with the requirements in
) \2 j3 H* I5 z1 ~4.30.2 (toys other than magnetic/electrical experimental sets).
$ ~1 p7 J" G) rThese requirements do not apply to functional magnets in electrical or electronic components of toys.
6#
 楼主| 发表于 2012-11-12 08:53 | 只看该作者
4.30.2 Toys other than magnetic/electrical experimental sets intended for children over 8 years( T6 X% v$ _( {+ l) T
a) Any loose as received magnet(s) and magnetic component(s) shall either have a magnetic flux index less
6 p' y# W2 d# B. S% q6 Fthan 50 kG2mm2 (0,5 T2mm2) when tested in accordance with 5.32 (magnetic flux index), or shall not fit# E# [7 m" ^. E4 E* P
entirely in the cylinder when tested in accordance with 5.2 (small parts test).4 k2 d: `  z( i2 }3 N2 q
b) Wooden toys, toys intended to be used in water and mouth pieces of mouth-actuated toys with magnets
- G/ p( T, W* ?" P: z7 qor magnetic components shall be tested in in accordance with 5.35 (soaking test for magnets) before3 R% e$ |' M/ c. o7 t2 e& v
being tested in accordance with 4.30.2 c) below.
* L% j# q# J; x2 |% Nc) The following tests shall be carried out in the prescribed order on all unique magnetic component(s). The
8 M& o; Y0 h) c8 s/ n( Y3 b) Ycomponents used for this testing shall not have been previously subjected to normal use and reasonably
$ i$ ^" D& B- tforeseeable abuse tests. Any magnet(s) and magnetic component(s) that become liberated from a toy, or) i% o2 i$ a8 y1 k' F
from a loose as received magnetic component shall either – when tested according to the tests listed& G- {: e8 A; [+ g! _6 \, D* n; w
below - have a magnetic flux index less than 50 kG2mm2 (0,5 T2mm2) when tested in accordance with
7 f% U% A- d9 [7 H. m' {5.32 (magnetic flux index), or shall not fit entirely in the cylinder when tested according to 5.2 (small parts3 Z( }3 \- H8 N, C7 b
test).
( {$ p/ g* [$ u4 l( z⎯ 5.33 (cycling)* U% D+ \& l# O5 ^+ S7 k1 M, V  j
⎯ 5.24.2 (drop test) or if applicable, 5.24.3 (tip over test for large and bulky toys)$ Z# Z; T$ ?/ o# O& ~
⎯ 5.24.5 (torque test)
& R, _/ z; m! `$ x4 G9 O⎯ 5.24.6.1 (tension test, general procedure)
6 E. p: h  B0 u⎯ 5.24.6.2 (tension test for seams in soft-filled (stuffed) toys and beanbag-type toys), if applicable
7 \; R  d  n$ I6 d⎯ 5.34 (impact test for magnets)
/ J- q8 U  P9 M# p- D⎯ 5.24.7 (compression test), for magnets that are accessible but cannot be grasped (as specified in; h1 F! `2 Z4 j& E; C
5.24.6.1 (general procedure)
( H' Q* F* K. [% Q, T. m+ ~9 |. @: H. ?⎯ 5.31 (tension test for magnets))+ B0 M/ G! ^' R: _
NOTES& q1 a3 }) I' q  L
1 Examples of unique magnetic components are rods of different sizes or shapes containing magnets.% M1 v' o( @# k% Q. j/ p
2 If the toy contains one magnet, the component holding the magnet is considered to be a unique component.2 c9 L' v4 H9 ~' a
3 An example of a magnet that is accessible but cannot be grasped is a magnet that is recessed.
# |% i+ n$ f; k9 W4 z1 |These requirements do not apply to functional magnets in electrical or electronic components of toys
' F( {- q# j- V9 F+ F  \5 Test methods' \+ }) T$ K$ C6 o. }4 M
Replace the second paragraph of clause 5.14 (impact test for toys that cover the face) with the following:: @6 @. e; U, N* P" y+ _
Drop a steel ball of diameter (16 ± 0,15) mm and mass of (16,9 ± 0,7) g from a height of (130 ± 0,5) cm onto) a$ G: S4 G6 ^# i* e6 ], E
the horizontal upper surface of the toy in the area that would cover the eyes in normal use.  ?' J& V. U; Q
Add the following new note to clause 5.24.1 (reasonably foreseeable abuse tests, general)
3 [8 x# Y0 N$ V6 ]1 w* h) d& TNOTE: The tests according to clause 4.30.2 are carried out in the order specified in the clause, on a toy or
2 @9 V2 n( B% Y) Z; Spart of a toy that has not been previously tested according to this clause.# {1 u. g4 b/ u9 [/ r( K
Add the following test methods:0 B9 |& H6 _. Z2 S
--`,`,``,,`,```,```,,````,,`,,`-`-`,,`,,`,`,,`---
7#
 楼主| 发表于 2012-11-12 08:53 | 只看该作者
5.31 Tension test for magnets+ r+ t+ H/ f; i" V! h! X) ~
See 4.30.2 c).( Z6 A; J. C0 _9 X
5.31.1 Principle+ R  F4 B4 v  h# K
These tests simulate the intended or reasonably foreseeable play pattern. It is recognized that toys may
1 m& C9 B/ l2 s  {: q+ d3 S2 l0 Ocontain a single magnet or a combination of magnets, magnetic components and/or metal mating parts and
9 [! t" F: k& ]6 ], O7 F0 Pthe tests are designed to simulate a reasonably foreseeable play pattern using these components to attach; J0 ^4 [) `3 p+ T! l4 L
and detach the magnetic parts.( U* l! u3 T& R' `
For toys that contain more than one magnet/ magnetic component, the test specified in 5.31.2 (toys with
, P8 W5 ~; j2 Fmagnet(s) or magnetic component(s)) shall be carried out unless it is not possible to perform the test without2 }+ a0 [# Y; ?( z0 l
damaging the toy. In the latter case, the test shall be carried out using the reference disk, as described in7 F. Z1 b' b+ `
5.31.4 (toys that contain one magnet only and no mating metal component).$ A( C1 u' L+ Z
NOTE: An example of a case where it is not possible to perform the test in 5.31.2 with magnet(s) or magnetic
, q* r. `8 }' w) Tcomponent(s) without damaging the toy, is a toy figurine with one accessible but non-graspable magnet in each foot.5 x  |" G1 i( B, H
Toys that contain one magnet only and a mating metal component shall be tested according to 5.31.3 (toys
2 c2 [3 l8 j! Hthat contain one magnet only and a mating metal part).. l! j% z+ W0 o  f! F
Toys that contain one magnet only and no mating metal component, shall be tested according to 5.31.4 (toys) s/ S  W$ y' p7 I6 A
that contain one magnet only and no mating metal component), since this simulates a play pattern where the
% ^5 J( j. v" utoy is attached and detached to a surface that is not delivered with the toy.
  _% w" M) r: Z; X1 g0 w! W# m5.31.2 Toys with magnet(s) or magnetic component(s)5 o& J5 }7 r5 ^7 P
Identify the magnet or magnetic component in the toy that is most likely to be able to detach. The identified, |; j# Z# e& _7 W3 X  Q
magnet or magnetic component shall be subjected to the tension test for magnets.
  x  |& q: \1 E/ p& V3 s% QIf it is not possible to determine which magnet or magnetic component(s) in the toy is most likely to be able to$ V; w& F  V4 L2 B+ S& F2 {
detach the magnet under test, it is permissible to repeat the test with another magnet or magnetic component
$ j* c, Q) x% O/ x$ qfrom the toy.
1 V/ s) b( r& p0 n7 }. KWithout damaging the toy, place the magnet or magnetic component in the orientation of attraction, as close" l! q7 N* f) b+ p4 S1 e8 K2 F
as possible, making contact if possible, to the magnet to be tested. Gradually apply a pulling force to the
, Q& m9 K7 f0 m$ ?/ xmagnet/magnetic component until it separates from the magnet under test. Perform the test 10 times or until# o% f6 a6 E1 }: w& n/ r
the magnet under test is detached from the toy, whichever occurs first.
, |# @8 x! G0 Z1 r# g! n+ X" lRepeat the procedure for any other magnet that in accordance with 4.31.2 (toys other than magnetic/electrical  Y% V) S: @! ~. {2 `. z; f
experimental sets intended for children over 8 years) shall be subjected to the tension test for magnets.
6 Q# a: X2 G0 m7 n9 v9 A9 w; x5.31.3 Toys that contain one magnet only and a mating metal component1 X' W& j! l+ m9 ?; j0 M& |
Without damaging the toy, place the metal components as close as possible, making contact if possible, to the3 o( w: y6 k1 c: a) u! n
magnet to be tested. Gradually apply a pulling force to the metal component until it separates from the, T/ r% q2 ]9 Y7 \+ R
magnet under test. Perform the test 10 times or until the magnet under test is detached from the toy,
0 D8 h' N& [' B+ P$ ]" u/ w6 H" vwhichever occurs first.
9 i5 o% c$ }  H. t5.31.4 Toys that contain one magnet only and no mating metal component& b# g; ?2 y# W' T9 R( d
5.31.4.1 Apparatus' M. X% E5 n$ o) I
Nickel disc with a minimum nickel content of 99 %, and having the following dimensions:* a2 x- e/ u8 W( `# D) ~. K
- diameter: (30 ± 0.5) mm  s+ I. @' T" S, c
- thickness: (10 ± 0.5) mm
8#
 楼主| 发表于 2012-11-12 08:53 | 只看该作者
5.31.4.2 Procedure
1 g  M. E' ]+ _) W6 J1 P; `- YWithout damaging the toy, place the flat part of the disc as close as possible, making contact if possible, to the
6 n3 {4 T. `: r- Y3 P; q' vmagnet to be tested. Gradually apply a pulling force to the disc until it separates from the magnet under test.# C7 ^) N+ ?* e2 O0 k
Perform the test 10 times or until the magnet under test is detached from the toy, whichever occurs first.
9 X% T" _; o0 O# l6 }- `( X5.32 Magnetic flux index7 p; q! }6 a# w- K+ o% ~; }
See 4.30.1, 4.31.2 a) and c).# L& h! n6 c- v3 t
5.32.1 Principle
' H& D$ ]2 \9 Z" Z2 |4 XThe magnetic flux index is calculated based on the results from measurements of the flux density and the pole5 U9 a. W4 [. G% K$ P- r* J
surface area.
/ {, Z) Q' a+ {- a( t5.32.2 Apparatus
0 g% J  r/ y/ m# _1 d5.32.2.1 Direct current field Gauss meter, capable of determining the field to an accuracy of 5 G.' e. P) t, s$ g0 M4 d9 F( ]
The meter shall have an axial type probe with
8 p, |: R( B) }9 l; q4 |1 s- an active area diameter of (0,76 ± 0,13) mm
  ?5 M; M6 s5 n( h1 {, G- a distance between the active area and probe tip of (0,38 ± 0,13) mm
, Z; M$ F# D9 z$ v! x+ V2 i5.32.2.2 Calliper, or similar device with an accuracy of 0,1 mm.: E# T* B( F7 _2 P# `  Q/ f9 C2 N
5.32.3 Procedure) p+ L+ ^6 k" Y/ Y: k
5.32.3.1 Measurement of flux density5 B9 S4 N7 i. l7 [& {
Identify the surface of the magnet that is the pole., O  N: u8 r' Z' K
Place the tip of the Gauss meter probe in contact with the pole surface of the magnet. For a magnetic
# P4 U4 n. {) Z+ `  l; |5 Mcomponent (where the magnet is fully or partially imbedded in part of the toy), place the tip of the probe in: ^6 z% {  Q/ c2 Q, T# J
contact with the surface of the component." H$ N9 h- u# e  X: j
Maintain the probe in a position perpendicular to the surface.
& D' c3 c  X' q% |! ^  sMove the probe across the surface to locate the maximum absolute value of the flux density. Record the
/ b5 V$ B; f9 A8 p. q5 i+ emaximum absolute value of the flux density.- h" S8 b. r$ }- u! G. O
NOTE Since the meter can read both negative and positive values, the absolute value is used for calculations.7 ~  d. v! ^' h
5.32.3.2 Measurement and calculation of the pole surface area  X% Q  E4 j' Y5 @
If the magnet is imbedded/attached as part of a magnetic component, extract the magnet from the component,( I, F+ m# F& H3 V1 `5 b
even if it is necessary to break the toy.3 J/ x4 Y* n/ \
If the pole surface of the magnet is flat, measure the dimensions with an accuracy of ± 0,1 mm and calculate6 f" ~2 g) S3 K
the area using the appropriate geometric formula." _9 z0 t7 B- f* F
If the pole is not flat, (for example hemispherical) measure the maximum diameter of the magnet8 A" a: T' [" e! |& t* Z
perpendicular to an axis through the magnetic poles (see Figure XX), with an accuracy of ± 0,1 mm and
. H& {2 _+ _4 J& X0 g8 Ecalculate the area of the corresponding cross section. For multi-pole magnets, measure and calculate the
% I/ u5 b" h) {: ]$ yarea of the largest single pole, which can be identified using magnetic field viewing film or equivalent.
9#
 楼主| 发表于 2012-11-12 08:54 | 只看该作者
NOTE An example of a multi-pole magnet is a rubberized/plastoferrite magnet, consisting of multiple strips or poles.) i' ^6 k' u, a% T' N# H
Figure XX – Maximum diameter of magnet with a non-flat pole$ x! X' w  W0 w9 x
Key
2 L9 o* K' g& _, b6 z4 i% a% g8 v/ b1 maximum cross-section perpendicular to the axis/ K2 i0 f. J5 m9 p6 j$ _
2 axis through the magnet poles! E1 K) j) s; ?& N* U
5.32.4 Calculation of magnetic flux index) ~7 [4 F/ U* O& j! U1 j% i
The flux index (kG2mm2) is calculated by multiplying the calculated area of the pole surface (mm2) of the
4 e0 y$ [0 b  J6 ^' Q0 }/ Q0 `magnet by the square of the maximum flux density (kG2).
7 z/ s# X* \0 y9 F$ M5.33 Cycling
$ b% j- O+ o" e( f4 J0 pSee 4.32.2 c).
" c9 D% N$ B' E* [2 rTen cycles as described below, shall be performed on the as-received magnet(s) or magnetic component(s).
, U' C1 W" T! d! m" t: V( {The magnet or magnetic component shall be brought together to a distance that initiates magnetic attraction,9 y$ t1 h& n9 r2 g4 c
be released, and then pulled apart to the distance where magnetic attraction ceases. Each attachment and
( I" C  ?) N9 H; D* P! Edetachment shall count as one cycle. If no other magnets or magnetic components are provided with the toy,& C& Q! z- s# l9 L) V2 B1 V3 j
the mating metal part or surface, according to the toy’s intended play pattern, shall be used for cycling
+ r: Z, i6 ?" L0 X4 S% xpurposes. If no other metal parts or surfaces are provided with the toy, the apparatus described in 5.31.4 shall
6 M2 D6 V' Z0 ]) gbe used for cycling purposes.3 N( u" l) F* M
5.34 Impact test for magnets
+ {& V" l7 \, H$ N" |; USee 4.32.2 c).
! m/ D1 R  u" z2 @8 vPlace the relevant component of the toy in the most onerous position on a plane horizontal steel surface and
. b4 Q9 p1 p7 q9 C4 sdrop a metallic weight with a mass of (1 ± 0,02) kg, distributed over a diameter of (80 ± 2) mm, through a
- d0 g% Z6 O0 q& X3 Pdistance of (100 ± 2) mm onto the toy.
7 ~% g( m1 z) w' C" |, t: W5 kDetermine whether any liberated magnets or magnetic components fit entirely in the cylinder when tested in) I0 t; x* R+ T8 o
accordance with 5.2 (small parts test).' S; t5 B# Q* N# d- n  W
5.35 Soaking test for magnets( L% z; m+ r% v% g; e+ P
See 4.30.2 b).  J. p: V; H: y3 O
Submerge the toy or toy component completely in a container of demineralised water at a temperature of (20
8 M* H- A  g2 l± 5) °C for 4 min. Remove the toy, shake off the excess water and keep the toy at room temperature for 10
/ `5 f$ q* N/ [! l$ J* W1 pmin.) N. ^* I0 G, r: K
--`,`,``,,`,```,```,,````,,`,,`-`-`,,`,,`,`,,`---
10#
 楼主| 发表于 2012-11-12 08:54 | 只看该作者
Perform the soaking test for a total of four cycles.
2 @" n8 V( B+ Q. `4 Z1 hImmediately after the last cycle, determine whether any liberated magnets or magnetic components fit entirely
4 e7 E3 r# r$ G; din the cylinder when tested in accordance with 5.2 (small parts test).' N9 r1 c# e' D9 O* R4 k- G
Annex B Labelling# x) e2 `8 f+ y& i9 c/ y  a1 w
Add the following clause:
( _# S/ G3 N% hB.2.21 Magnetic/electrical experimental sets for children over 8 years& W* C  m9 E+ q5 I  B" t" X' N
See 4.30.1 and E.44)
% V3 R9 Z; f2 z2 S: `. v" i9 s  MThe packaging and the instructions for use of magnetic/electrical experimental sets intended for children 8
, v0 b$ ^% f& Pyears of age or older shall carry a statement comparable or similar to the following.
0 k( p% |, G# f5 ^; ]“WARNING! Not suitable for children under 8 years. This product contains (a) small magnet(s).
$ K2 @3 t( u: gSwallowed magnets can stick together across intestines causing serious infections and death. Seek
- ~7 i) V( m$ y! limmediate medical attention if magnet(s) are swallowed or inhaled.”/ D' t& l' R0 V) h+ [' }' E7 r
Annex E Rationale" I! J0 {3 n" t" ~
Add the following clause:9 r9 X* M0 J$ T
E.44 Magnets6 M' r* N& J% r$ d! ?) T
See 4.30.2 E* B$ @, G8 y  v
These requirements are intended to address the hazards associated with ingestion of strong magnets (e.g.+ ?  F2 O: G. h3 H! e* p. S# F
neodymium iron boron type magnets (“NIB”)), that are capable of causing intestinal perforation or blockage.
$ U) z3 [" U" x9 uThese hazards are additional to those associated with small parts such as suffocation or asphyxiation (see' y$ l* S: D, H4 A/ e& w
E.6). These requirements apply regardless of the age of the intended user.3 m5 q; ~& Q* K7 {0 i& I
Magnets found by children can be ingested. If more than one magnet, or one magnet and a ferromagnetic6 O6 B, L& t- H( o
object (for example an iron or nickel object) is ingested, the objects can attract each other across intestinal4 _5 U+ s4 E+ P; N
walls and cause perforation or blockage, which can cause severe injuries that may be fatal.
: v/ F8 c- Z" v1 u: r( \  ^6 U$ ]Multiple incidents, including at least one fatality, have been reported involving ingestion of magnets resulting" i* _. T5 p" u( I
in perforation or blockage of the intestines. These incidents have involved children younger and older than 3
6 K0 ]$ D4 D7 S- Gyears of age. Medical signs associated with intestinal perforation or blockage can easily be misinterpreted6 p# A, w2 j. X' s  p" H* b, _
since many children exhibit only flu-like symptoms. Such misinterpretations have caused delays in the medical
+ v( l/ m8 M; r# E6 T+ F4 G7 J+ Ytreatment and led to serious consequences for children.- E1 o5 }* l  ^6 v3 q
For the purpose of this standard, magnets or magnetic components that could be ingested are identified using
3 X1 ~( N3 @/ w" Q% {the small parts cylinder. The small parts cylinder was originally designed to identify small parts in toys
$ \! u8 @# I* Z; Y# k! \) Z" Yintended for children under 3 years of age, which are capable of causing suffocation or asphyxiation. It was) j5 X% M5 b% w0 q" I
not designed for identifying objects that can be ingested by older children. The decision to use the small parts
" @( ^+ a) m! t$ X9 B+ M! ?* P6 kcylinder also for assessment of magnets or magnetic components that can be ingested was made for practical
$ L( x0 Y2 M7 Kreasons: The cylinder is a well known test template and it provides a safety margin since the magnets and' L7 f* T  u& V: Q1 w
magnetic components that have been involved in incidents all fit into the cylinder with a large margin. This
9 ~' S$ x1 V, N$ A  F# P% \same principle has been applied in the requirements for expanding materials.
5 r! A( c, v" @0 F, v" G, ~$ u0 a4 rThe risk of magnets attracting each other across intestinal walls is a function of magnet strength. A limit value
" G$ \- s7 d) }- ~& F( Y7 ]- nin the form of a magnetic flux index has been introduced to define what a sufficiently weak magnet is. Analysis
/ l9 s/ S- v& Jof the data indicates that only the small, powerful NIB type magnets have been involved in the known
( ~' x; q2 u& Q$ y2 Qincidents. Further analysis has determined that magnets with a magnetic flux index less than 50 kG2mm2 (0,5- G% ], [, P. g& l" I
--`,`,``,,`,```,```,,````,,`,,`-`-`,,`,,`,`,,`---
您需要登录后才可以回帖 登录 | 注册安规

本版积分规则

关闭

安规网为您推荐上一条 /2 下一条

QQ|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网 ( 粤ICP13023453-10 )

GMT+8, 2024-11-27 00:23 , Processed in 0.101932 second(s), 25 queries .

Powered by Discuz! X3.2

© 2001-2013 Comsenz Inc.|广东安规赞助

快速回复 返回顶部 返回列表