The invention relates to the technical field of electric automobile parts, and particularly discloses a variable-volume vacuum tank which comprises a tank body, a spring and a limiting sleeve. The middle of the tank body is of a telescopic rubber elastic structure, the limiting sleeve is arranged in the tank body, and the bottom end of the limiting sleeve is fixed to the bottom of the tank body. When the tank body is in the maximum state, one end of the spring abuts against the bottom of the tank body, and the other end of the spring extends out of the limiting sleeve to abut against the top of the tank body. When the tank body is compressed, the spring is compressed and then placed in the limiting sleeve, the top end of the limiting sleeve is attached to the top of the tank body, and thetwo ends of the spring abut against the top and the bottom of the tank body respectively. The vacuum tank is simple in structure, when the vacuum degree in the vacuum tank body is lower than a set value, elastic force of the spring abuts against the upper face and the lower face of the tank body, the volume of the vacuum tank is increased, and therefore the vacuum degree is increased. Due to the limiting sleeve in the vacuum tank body, the spring cannot be compressed excessively, and the volume of the vacuum tank is greatly reduced. The problem of insufficient braking force caused during emergency continuous braking of an electric automobile is solved.

    本发明涉及电动汽车零部件技术领域,具体公开了一种可变容积真空罐,包括罐体、弹簧和限位套,罐体中部设为可伸缩的橡胶弹性结构,限位套设置在罐体内部,限位套底端固定在罐体底部;当罐体处于最大状态时,弹簧一端顶紧罐体底部,另一端伸出限位套顶紧罐体顶部;当罐体压缩时,弹簧被压缩后置于限位套内,限位套顶端与罐体顶部相贴合,弹簧的两端分别顶紧罐体的顶部和底部。本发明结构简单,当真空罐体内真空度低于设定值时,弹簧的弹力顶着罐体上下面,使真空罐体积变大,从而增加真空度;真空罐体内的限位套,使弹簧不会被过大地压缩,而真空罐体积大量缩小;解决了电动汽车紧急连续制动时的制动力不够的问题。


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    Title :

    Variable-volume vacuum tank


    Additional title:

    一种可变容积真空罐


    Contributors:
    ZONG HONGJUN (author) / CHEN YAN (author)

    Publication date :

    2020-12-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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