The transmission assembly of the linear lifting device comprises a lead screw, a spline and a hollow hollow shaft arranged on the outer side of the lead screw in a sleeving mode, the spline comprises a sleeve body and spline teeth arranged on the outer side of the sleeve body in a protruding mode, the sleeve body is arranged on the outer side of the lead screw in a sleeving mode and rotates synchronously with the lead screw, and a key groove in sliding fit with the spline teeth is formed in the inner side face of the hollow hollow shaft. At least part of the key teeth comprise forked bodies, each forked body comprises a slitting groove and two elastic parts arranged on the two sides of the slitting groove, one ends of the two elastic parts are fixedly connected with the sleeve body, and the other ends of the two elastic parts are fixedly connected with the sleeve body. And the two elastic parts deform after being extruded by the side wall of the key slot, so that the fork body is contracted and inserted into the key slot. According to the transmission assembly, through interference fit of the key teeth and the key grooves, collision sound generated in the operation process of the linear lifting device can be eliminated, and therefore the use experience of a user is improved. In addition, the invention further discloses a linear lifting device adopting the transmission assembly.

    本发明公开了一种线性升降装置的传动总成,包括丝杆、花键、套设在丝杆外侧的中空心轴,所述花键包括套体和凸设于套体外侧的键齿,所述套体套设在丝杆外侧并与丝杆同步转动,所述中空心轴的内侧面设有与键齿滑动配合的键槽,以使所述丝杆与中空心轴可沿轴向相对伸缩,至少部分键齿包括分叉体,所述分叉体包括分切槽和设于分切槽两侧的两个弹性部,两个所述弹性部的一端与套体固定连接,两个所述弹性部受键槽侧壁挤压后变形以使分叉体收缩插入所述键槽内。本发明的传动总成,通过键齿与键槽过盈配合,可消除线性升降装置运行过程中的碰撞音,由此提升了用户的使用体验。此外,本发明还公开了一种采用上述传动总成的线性升降装置。


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    Title :

    Transmission assembly of linear lifting device and linear lifting device


    Additional title:

    一种线性升降装置的传动总成及线性升降装置


    Contributors:
    LIU DUO (author) / LYU KAI (author)

    Publication date :

    2024-08-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile / F16H Getriebe , GEARING



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