The utility model discloses a copper embedded PCB, including copper block and open PCB core plate of copper embedded groove, copper block in block copper groove, PCB core plate and the top surface of the copper film and copper foil layer connected with the copper block side wall and the side wall of the groove is inlaid copper clearance fit. PCB core board is also provided with a piece of copper from copper to prevent bottom slot opening off the limiting part; the limiting part is arranged on the side wall of the groove at the bottom of the copper block toward a plurality of convex blocks of copper, copper block side wall is arranged at the bottom of the concave part matched with a plurality of projections; copper inlaid groove and the copper piece is a cuboid, block four edges of the lower section of the copper side wall of the groove is respectively provided with a convex part, four edges of the side wall of the lower section of the copper block are respectively provided with a concave part; the side wall of the upper piece of copper inlaid copper and the side wall of the groove gap with the upper portion of the side wall, convex and concave corresponding the side wall is attached. The utility model can provide support force for the exposed side of the copper block pressed on one side, prevent copper blocks from loosening or falling off because of single side without film support, and prevent copper blocks from moving horizontally during compression.
【技术实现步骤摘要】
一种嵌铜PCB
本技术属于印制电路板
,特别涉及一种嵌铜PCB。
技术介绍
对于PCB(印制电路板)而言,当涉及到大电流的线圈板等时,其对于散热性能要求极高,通常在PCB内嵌入铜块,以满足散热需求。现有的嵌铜PCB包括铜块和开设有嵌铜槽的PCB芯板,铜块嵌于嵌铜槽内,PCB芯板与铜块的顶面均通过胶片与铜箔层相接。在嵌铜PCB中,如果铜块和嵌铜槽等大,铜块的侧壁与PCB芯板之间没有胶填充,铜块与PCB芯板之间的附着力较小,铜块易脱落。为了提高铜块与PCB芯板之间的附着力,直接嵌入的铜块尺寸一般需要比嵌铜槽略小,即铜块侧壁与嵌铜槽侧壁间隙配合,从而使得在压合过程中,胶片能够填充至铜块侧壁与嵌铜槽侧壁之间的间隙,提高铜块与PCB芯板之间的结合力。即便如此,若铜块为单面压合,即铜块的顶面压合胶片,铜块的底面裸露,则铜块裸露的底面无任何支撑,仅仅依靠顶面胶片及间隙内胶的附着力,铜块还是容易发生松动和脱落等问题。同时,由于铜块侧壁与嵌铜槽侧壁间隙配合,在压合过程中,由于胶挤入间隙,可能导致铜块受力水平移动,偏离中心位置。
技术实现思路
现有的嵌铜PCB在单面压合后,铜块与PCB芯板之间的结合力太小以致铜块易松动和脱落,在压合过程中,铜块受力易水平移动以致偏离中心位置。本技术的目的在于,针对上述现有技术的不足,提供一种改进了的嵌铜PCB,能够为单面压合的铜块裸露的一面提供支撑力,防止铜块因单面无胶片支撑而松动或脱落;同时可以防止铜块在压合过程中水平移动。为解决上述技术问题,本技术所采用的技术方案是:一种嵌铜PCB,包括铜块和开设有嵌铜槽的PCB芯板,铜块嵌于嵌铜槽内, ...
【技术保护点】
一种嵌铜PCB,包括铜块(2)和开设有嵌铜槽(11)的PCB芯板(1),铜块(2)嵌于嵌铜槽(11)内,PCB芯板(1)与铜块(2)的顶面均通过胶片(3)与铜箔层(4)相接,铜块(2)侧壁与嵌铜槽(11)侧壁间隙配合,其特征在于,所述PCB芯板(1)上还设有防止铜块(2)从嵌铜槽(11)底部开口脱落的限位部。
【技术特征摘要】
1.一种嵌铜PCB,包括铜块(2)和开设有嵌铜槽(11)的PCB芯板(1),铜块(2)嵌于嵌铜槽(11)内,PCB芯板(1)与铜块(2)的顶面均通过胶片(3)与铜箔层(4)相接,铜块(2)侧壁与嵌铜槽(11)侧壁间隙配合,其特征在于,所述PCB芯板(1)上还设有防止铜块(2)从嵌铜槽(11)底部开口脱落的限位部。2.如权利要求1所述的嵌铜PCB,其特征在于,所述限位部为设置在嵌铜槽(11)侧壁底部的朝向铜块(2)的若干个凸部...
【专利技术属性】
技术研发人员:唐川,张国兴,
申请(专利权)人:湖南维胜科技电路板有限公司,
类型:新型
国别省市:湖南,43
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