The invention discloses an intermediate structure of a transmission shaft, and relates to the field of automobile transmission shafts. The intermediate structure comprises an intermediate connecting fork, an intermediate spline shaft, a support and circular rings, wherein the intermediate connecting fork is connected with the intermediate spline shaft through a spline in a matched manner, the circular rings are sleeved on journals of the intermediate connecting fork and the intermediate spline shaft correspondingly, a support bearing is mounted between the two circular rings, the support is installed on the support bearing, rubber sealing lips are arranged at the positions, close to the rings, of the upper end and the lower end of the support, and the rubber sealing lips make contact with the corresponding rings for sealing. The method has the beneficial effect that the spline heat treatment deformation is prevented from being transmitted to the sealing contact part. Besides, the circular ring is made of non-steel materials (such as nylon), so that the sound of contact friction between rubber and the circular ring is smaller, the sealing interference design can be increased, and the muddy water resistance is enhanced.

    本发明公开了一种传动轴中间结构,涉及汽车传动轴领域,包括中间连接叉、中间花键轴、支架和圆环,所述中间连接叉和中间花键轴通过花键配合连接,在中间连接叉和中间花键轴的轴颈上均套装一只圆环,二只圆环之间安装有支架轴承,所述支架安装在支架轴承上,该支架的上下两端靠近圆环处具有橡胶密封唇,各橡胶密封唇与对应的圆环接触密封。本发明的有益效果为:避免花键热处理变形量传递到密封接触部位。另外,圆环使用非钢材质(如尼龙等),橡胶与其接触摩擦声音更小,可将密封过盈量设计加大,增强防泥水性能。


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    Title :

    Intermediate structure of transmission shaft


    Additional title:

    一种传动轴中间结构


    Contributors:
    CHEN LONG (author)

    Publication date :

    2021-04-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16C SHAFTS , Wellen / B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16J Kolben , PISTONS




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