The invention discloses a new type of ventilation pipe for gearbox, which includes the main body of the ventilation pipe, one end of the main body of the ventilation pipe is threaded, the outer wall of the main body of the ventilation pipe on one side of the threaded thread is provided with a blocking block, the blocking block is arranged with a ring chuck on one side near the thread, the sealing ring is arranged on the ring chuck, the other end wall of the main body of the ventilation pipe is provided with an opening, and the outer wall of the main body of the ventilation pipe between the opening and the blocking block is provided with an The bottom and outer walls of the conical inclined plane are cylindrical, and the side walls of the conical inclined plane are uniformly provided with several drainage grooves. The drainage grooves on the side walls of the adjacent conical inclined plane are dislocated. A cylindrical cover with one end closed and one end open is set on one side of the opening. The inner wall of the cover fits with the bottom and outer walls of the conical inclined plane, and the closed end of the cover fits with the ventilation pipe on the side of the opening. The interference fit of the end face of the body is simple in structure, low in cost and simple in assembly. A labyrinth structure is formed through the staggered distribution of drainage grooves on the adjacent conical inclined plane to prevent the water from entering the outside of the gearbox and to prevent the water from condensing and refluxing.
【技术实现步骤摘要】
一种新型变速箱用通气管
本专利技术属于汽车变速箱部件
,具体涉及一种新型变速箱用通气管。
技术介绍
1.变速箱的通气管安装在变速箱壳体上方,用来连通变速箱腔体与大气环境,待变速箱内润滑油的油温上升,油气膨胀后,通过通气管排出变速箱,保持内外压力平衡。如果外部水分及杂物进入变速箱内部,会造成润滑油含水量过高甚至变质而引起失效。2.目前DCT150所用的通气管分总成采用连接头与橡胶管组合,连接头装配在变速箱壳体上,橡胶管则需要装配在整车部件上。单纯地依靠抬高橡胶管口的位置来避免水进入内部。其结构复杂,零部件数量多达7个,成本高,装配耗时长,仍有外部的水直接进入变速箱的风险,且因为橡胶管过长,有可能因内部温度降低所造成的水汽凝结回流,每个新的整车项目需要新的橡胶管配合,也需要新的卡扣固定,通用性差,所以目前的通气管总成类别多,外观又大同小异,所以工厂需要采取措施防止通气管装错,增加了管理成本。目前也有利用迷宫式通道来设计通气管,如申请号为CN201010296455.4的专利公开了一种迷宫式透气孔盖,其包括透气孔上盖和透气孔下盖,并且所述透气孔上盖和透气盖下盖通过 ...
【技术保护点】
1.一种新型变速箱用通气管,其特征在于,包括通气管本体,所述通气管本体的一端外壁设有螺纹,所述螺纹一侧的通气管本体外壁设有挡块,所述通气管本体上位于所述螺纹和所述挡块之间设有环形卡槽,所述环形卡槽上套设有密封圈,所述通气管本体另一端侧壁上设有开口,所述开口与所述挡块之间的通气管本体外壁上等距设有若干锥形斜面,所述锥形斜面的底端外壁呈圆柱状,所述锥形斜面的侧壁均匀设有若干引流槽,所述引流槽的深度与所述锥形斜面的厚度相匹配,且相邻锥形斜面侧壁上的所述引流槽错位分布,所述开口一侧套设有一端封闭、一端开口的圆柱形的盖子,所述盖子内壁与所述锥形斜面的底端外壁过盈配合,所述盖子封闭的一 ...
【技术特征摘要】
1.一种新型变速箱用通气管,其特征在于,包括通气管本体,所述通气管本体的一端外壁设有螺纹,所述螺纹一侧的通气管本体外壁设有挡块,所述通气管本体上位于所述螺纹和所述挡块之间设有环形卡槽,所述环形卡槽上套设有密封圈,所述通气管本体另一端侧壁上设有开口,所述开口与所述挡块之间的通气管本体外壁上等距设有若干锥形斜面,所述锥形斜面的底端外壁呈圆柱状,所述锥形斜面的侧壁均匀设有若干引流槽,所述引流槽的深度与所述锥形斜面的厚度相匹配,且相邻锥形斜面侧壁上的所述引流槽错位分布,所述开口一侧套设有一端封闭、一端开口的圆柱形的盖子,所述盖子内壁与所述锥形斜面的底端外壁过盈配合,所述盖子封闭的一端与所述开口一侧的通气管本体端面密封连接,所述盖...
【专利技术属性】
技术研发人员:徐汉明,
申请(专利权)人:东风格特拉克汽车变速箱有限公司,
类型:发明
国别省市:湖北,42
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