The invention discloses an input shaft and screw assembly of an electric steering gear. The input shaft and screw assembly comprises a steering screw, an input shaft and an elastic torsion bar, a stepped hole is formed in one end of the steering screw; the stepped hole comprises a connecting hole and a limiting hole which are sequentially formed from outside to inside; the elastic torsion bar is arranged in the input shaft in a penetrating mode. One end of the elastic torsion bar is inserted into the connecting hole and is connected with the steering screw rod through a first limiting pin; the other end of the elastic torsion bar is connected with the input shaft through a second limiting pin; a limiting sleeve is detachably connected into the limiting hole; a limiting groove is formed in the limiting sleeve; a limiting boss is arranged at the position, corresponding to the limiting groove, of the outer side wall of the input shaft. The limiting sleeves with the limiting grooves of different sizes can be replaced according to needs, so that the size of the rotating space is changed, the relative rotating angle of the input shaft and the steering screw is changed, the practicability of the device is improved, only the limiting sleeves need to be replaced after the relative rotating angle is changed due to abrasion of the wall bodies of the limiting grooves in the long-term use process, and cost is saved.

    本发明公开了一种电动转向器输入轴与螺杆总成,包括转向螺杆、输入轴和弹性扭杆;转向螺杆一端设有阶梯孔;阶梯孔包括由外至内依次设置的连接孔和限位孔;弹性扭杆穿设于输入轴内部;弹性扭杆一端插接于连接孔内并通过第一限位销与转向螺杆连接;弹性扭杆另一端通过第二限位销与输入轴连接;限位孔内可拆卸连接有限位套;限位套上设有限位槽;输入轴外侧壁上与限位槽相对应的位置处设有限位凸台。本发明可以根据需要更换具有不同尺寸限位槽的限位套,从而改变转动空间大小,进而改变输入轴与转向螺杆的相对转动角度,提高装置实用性,而且在长期使用过程中限位槽壁体磨损导致相对转动角度改变后,仅需更换限位套,节省成本。


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    Title :

    Input shaft and screw assembly of electric steering gear


    Additional title:

    一种电动转向器输入轴与螺杆总成


    Contributors:
    ZHANG YONG (author) / YANG LIYU (author) / WANG SHIKAI (author) / YANG XIAOPENG (author) / ZHU JIAJING (author) / LI YU (author) / WANG CHENGLING (author)

    Publication date :

    2023-01-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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