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电子产品缓冲防振设计

RIQI:2018-05-26 / RENQI: / LAIYUAN:eecqu.com

振动对电子产品的主要损害:

开心快3 YINZHENDONGCHANSHENGGONGZHENERSHIDIANZICHANPINDEZHENFUYUELAIYUEDA,ZUIHOUCHAOGUODIANZICHANPINDEJIXIANJIASUDUERPOHUAI;

开心快3 ZHENDONG、CHONGJIJIASUDUSUIRANWEICHAOGUODIANZICHANPINSUOCHENGSHOUDEJIXIANJIASUDUZHI,DANYOUYUZHANGQIZHENDONG、CHONGJIDEJIEGUOERSHIDIANZICHANPINYINPILAOERPOHUAI。

WEILEBAOZHENGDIANZICHANPINDEKEKAOXING,SHIQISHIYINGGEZHONGZHENDONGHECHONGJIHUANJING,YIBANKECAIQUYIXIAFANGZHENSHEJIJISHUCUOSHI:

印制电路板及元器件

开心快3 YINZHIDIANLUBANSHANGDEDAORETIAOBUJINSHIQIRECHUANDAOZUOYONG,TONGSHIYEYOUJIAQIANGYINZHIDIANLUBANDEZUOYONG。YOUSHIWEILEJINYIBUTIGAOQIFANGZHEN、KANGCHONGJINENGLI,ZAIYINZHIDIANLUBANBEIMIANZHONGJIANJIAZHUANGHENGXIANGJIAQIANGJIN,YITIGAOYINZHIDIANLUBANZISHENDEZHENGTIGANGDU,JIANXIAOYINZHIDIANLUBANZAIZHENDONG、CHONGJITIAOJIANXIADEWANQU。LINGWAI,RUOCAIYONGMOKUAIHUAJIEGOUXINGSHI,YINZHIDIANLUBANFENBIEYONGJINGUJIANGUDINGZAIGEMOKUAIHETISHANG,QIHUANCHONGFANGZHENNENGLIHUIDEDAOJINYIBUJIAQIANG。

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机芯的缓冲防振

JIXINYOUZHICHENGGEDUOGEGONGNENGMOKUAIZUCHENG,GEMOKUAIYOUYOUYINZHIDIANLUBANHEHETIZUCHENG,JIXINYOUHEJIXIANGMOKUAILIANJIEZAIYIQI,YINER,TAMENSUOGOUCHENGDEZHENDONGXITONGSHIXIANGDANGFUZADE,MEIGEMOKUAIHEZHICHENGJIADOUYOUGEZIDEZHENDONGTEXING,LIANGGEJIEGOUJIANZHUANGPEIZAIYIQIYOUHUICHENGXIANDISANZHENDONGTEXING,ZUZHUANGFANGSHIBUTONGQIZHENDONGTEXINGYEGEYI。WEILEFANGZHISHANGSHUXIANXIANGCHANSHENG,BIXUCAIYONGBEIPINDINGLV,BEIPINDINGLVZHICHU:ZAICHUANLIANDEDANHUANG-ZHILIANGXITONGZHONG,RENHEYIZUDANHUANG-ZHILIANGXITONGDEGUYOUPINLVZHISHAOSHIQIANYIZUDANHUANG-ZHILIANGXITONGGUYOUPINLVDELIANGBEI,LIRU,JIASHEJIXIANGMOKUAIDEGUYOUPINLVSHI100Hz,NEIMEJIXINDEGUYOUPINLVYINGGAIZAI200HzYISHANG,CAINENGFANGZHIYINJIXINDEGONGZHENFANGDACONGERYINQIJIXIANGMOKUAIFASHENGGONGZHEN。WEIDADAOSHANGSHUYAOQIU,KECAIYONGYIXIALIANGZHONGHUANCHONGFANGZHENCUOSHI:YISHIZENGJIAJIXINGANGDU;ERSHIYONGJIXIEFANGFAJIADAJIXINBIANYUANYUZHICHENGJIEMIANZHIJIANDEJIECHUYALI。

专用缓冲防振模块

开心快3 XIANGJIAOMOKUAIHEJINSHUDANHUANGZAIZHUANYONGGEZHENHEHUANCHONGMOKUAIDIANZICHANPINSHEJIZHONGBEIJINGCHANGCAIYONG。

橡胶模块的特点如下:

电子产品防振橡胶

  • 取型和制造比较方便,根据需要可随意选择三个互相垂直方向上的刚度,改变橡胶的内部构造,可以大幅度改变其刚度;
  • 橡胶自身具有较大的阻尼,对高频振动(50~60Hz以上)的能量吸收有显著效果;
  • 阻尼比随橡胶硬度的增大而增加。长时间处于共振状态时,橡胶会发生蠕变而使阻尼失效,故橡胶模块适合于偶发共振情况,也适合于静位移小而瞬时位移可能很大的冲击。
  • 在动载荷下的弹性模量比在静载荷下的大,两者比值一般在1~2之间。随着硬度的增加以及频率的升高,动态弹性模量也会变大;
  • 天然橡胶的性质受环境条件影响大,当温度低至-50~-60℃时,橡胶硬度显著增加,失去隔振作用;当温度高于+60℃,表面产生裂纹并逐渐加深,最后失去强度。此外,天然橡胶耐油性差,对酸、臭氧和光等的反应敏感,容易老化,故天然橡胶制作的模块要定期更换。

金属弹簧的特点如下:

电子产品缓冲弹簧

  • 材料的性能稳定,对环境条件反应不敏感,可在油污、高低温等恶劣环境下工作,不易老化;
  • 动刚度和静刚度基本相同,而且刚度的取值范围很大,故适用于静态位移要求较大的隔振;弹簧不但能做得很柔软(小于2Hz),亦能做得非常硬。当工作应力低于屈服应力时,弹簧不会产生蠕变。但是,应力超过屈服应力时,即使是瞬时,也会使弹簧产生永久变形,因此使用时应保证动态应力不超过弹性极限;
  • 材料自身几乎无阻尼,容易传递高频振动,或者由于自激振动(例如在150~400Hz之间)而传递中频振动。在经过共振区时,设备会产生过大的振幅,有时需要另加阻尼器、橡胶垫层和金属丝网(作为摩擦元件,不承受载荷)等,以克服这一缺点;
  • 弹簧的设计与计算资料比较成熟,刚度可以制造得相当准确。金属弹簧种类很多,如圆柱形弹簧、板形弹簧、圆锥形弹簧、盘形弹簧等,其中圆柱形弹簧应用最广。

【格亚信电子】是专业从事电子产品设计、电子方案开发、电子产品PCBA加工开心快3的深圳电子方案公司,主要设计电子产品包括工控、汽车、电源、通信、安防、医疗电子产品开发。

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开心快3GONGSICHANPINHANGAIGONGYESHENGCHANSHEBEIKONGZHISHEBEIDIANZIKAIFA、QICHEMCUDIANZIKONGZHIXITONGFANGANSHEJI、SIFUKONGZHIBANPCBAJIAGONG、SHUKONGJICHUANGZHUBANPCBAJIAGONG,ZHINENGJIAJUDIANZIYANFA、3DDAYINJIKONGZHIBANPCBAJIAGONGDENGLINGYU。YEWULIUCHENGBAOKUODIANZIFANGANKAIFASHEJI、PCBSHENGCHAN、YUANQIJIANCAIGOU、SMTTIEPIANJIAGONG、YANGJIZHIZUODIAOSHI、PCBAZHONGXIAOPILIANGJIAGONGSHENGCHAN、HOUQIZHIBAOWEIHUYIZHANSHIPCBAJIAGONGFUWU。

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作者:电子产品设计


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