标题: 65的公放喇叭開孔 [打印本页] 作者: sonyyyyy 时间: 2013-6-6 00:04 标题: 65的公放喇叭開孔 我有一个做65的公放,它的低音喇叭做在产品的底部,而且是很大一块 4 ?2 l- }8 b/ \2 T* ?! |. w7 d如果把低音喇叭当作开孔,它上面是有PCB板的部分,所以TUV工程师要求要喇叭加铁罩(现产品没加) m: ^$ S, z7 u* N- o5 b各位是怎么看这部分呢,低音喇叭是不是不能被视为外壳的一部分?又一定要加铁罩吗?: U# f4 B+ w$ I 作者: wuyueguang 时间: 2013-6-7 21:39
只能说,如果你一直做UL的话,就不会有这样的疑问了。( q/ Q# ~6 A# A
据了解TUV, ITS都是最新改的要求。之前他们都是当成外壳的一部分的-----不过,很不幸,不符合标准。作者: kamiyo86 时间: 2013-6-9 11:36
需要从两个方面去看: / _6 Q6 k+ y2 {1) 若产品的底部开孔,不在这个区域(以PIS为中心,正上方50mm,底部已13mm为半径。构成一个锥体和半球型)内,则不需要加。 若在这个范围的是不能有开孔,至少要用一个V-1等级的挡住。(只要喇叭上的相关塑胶材质,喇叭布之类的有V-1的等级,也是可以认为开孔被挡住)) Z1 |1 [ V* T+ b
2)若底部的低音喇叭外部无任何机械防护,User 能直接碰到, 则需要对喇叭做一些机械测试,测验其是否有一定的机械防护能阻止User碰到内部的危险。若测试OK,则不需要加, 若测试Fail, 则需要。 - u: C! J8 @8 f; ^, s仅仅是个人愚见,希望对你有帮助,见笑了。作者: xuehua_123 时间: 2013-6-9 12:56
这个是60065 9.1.1.2章节内容" |) U3 b5 M- [7 p) i w
9.1.1.2 Determination of ACCESSIBLE parts) j6 k# g+ j2 O: R. a
In order to determine whether a HAZARDOUS LIVE part is ACCESSIBLE, the jointed test finger6 ~4 m# I- A# i% I
according to test probe B of IEC 61032, is pushed against the enclosure or inserted through! Y8 J* O1 w! O& D# N+ i" W
any openings of the enclosure, including openings in the bottom, without appreciable force.& o4 _( a5 r9 M: e# z! p
Through openings, the test finger is applied to any depth that the finger will permit and ; P7 a5 B6 N- ^* L7 \is rotated or angled before, during and after insertion to any position. If the opening does% P7 i* q, m9 E' D1 H
not allow the entry of the finger, the force on the finger in the straight position is increased to 7 D6 d9 r2 f9 J& N( k8 H" ^20 N ± 2 N and the test repeated with the finger in angled position.0 F5 u% V: d1 ]; T
The test is repeated using small finger probes according to test probes 18 and 19 of! ^7 p5 o, r4 [3 c
IEC 61032. This does not apply if the intended conditions of use prevent the apparatus from ) x" R% A Y5 Q" |* D7 Kbeing accessed by children. 9 U1 y4 j6 }* d( D# B9 CConductive parts, covered only by lacquer, solvent-based enamel, ordinary paper, untreated* U( E, T- _3 u8 \4 ]2 P
textile, oxide films or beads are considered to be bare. 5 F( T* l$ W' U) TMoving parts of loudspeaker systems, such as dust caps or cones of drivers or passive* m4 D2 w% I n S F; J" o
radiators, are not regarded as preventing accessibility.5 P6 h9 P0 `. \5 U, }2 E6 e6 |
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一般整改方案,可以在喇叭开孔用金属片挡住,test probe B of IEC 61032,test probes 18 and 19 of 2 e% B" \8 N4 W& E# X; yIEC 61032探不到危险带电体就OK。作者: stey 时间: 2013-6-9 13:30
实际上不少名机都是这种设计,低音炮朝下设计,以前TUV是没有这个要求的。 1 w4 I* J1 s! Q& o# Z1 e) T7 ^3 t2 m7 @# V+ f; c
针对此情况,一个是加金属罩,另一个方法是,音腔室与电路板分离开来,有见过这结构,音响效果还不错。作者: 长征 时间: 2014-5-21 15:51
4楼正解作者: hgf397556998 时间: 2014-5-21 16:45
里面的PCB部分是不是高压部件,就是>35V的部分?