The utility model discloses a rotary contact of a high voltage DC contactor, including a movable contact and a static contact. The electromagnet and the movable iron core form a driving contact. The outer end of the movable iron core is provided with a stop ring, and the outer wall of the movable iron core is provided with a stop ring. The movable contact is located between the stop ring and the stop ring, and the inner side of the movable contact is in the axial direction. The concentric stainless steel ring and copper ring are connected, the movable contact, the stainless steel ring and the copper ring are set in the outer circumference of the movable iron core and can be fitted with the moving iron core. The outer circumference of the moving iron core is equipped with a super range spring, and the overrange spring is located between the copper ring and the stop ring. When the contact and separation of the movable contact and the static contact, the overrange spring is all in the movable contact diameter. The component of the production force makes the movable contact rotate, which makes the contact between the movable contact and the static contact different each time, thus slowing down the process of the contact deterioration and improving the service life of the contact.
【技术实现步骤摘要】
一种高压直流接触器的旋转式触头
本技术涉及电气元件
,具体是一种高压直流接触器的旋转式触头。
技术介绍
近年来,新能源汽车得到快速的发展,人们对环境污染的日益关注,对清洁能源充满期待。新能源汽车包含纯电动,混合动力,氢燃料动力等,高压直流接触器作为高压直流回路重要的转换和承载大电流电路的电磁元件,在电动汽车上的应用也越来越多。高压直流接触器通常包括外壳、动触头、静触头、电磁铁、动铁芯等部件,通过动触头与静触头的吸合与断开来实现电路通断的目的。然而,高压直流接触器一般为带载切换,动触头与静触头在接触和分离时会产生电弧,电弧燃烧时会引起触点腐蚀和材料蒸发,这都会使触点劣化,影响触点的使用寿命。
技术实现思路
本技术的目的在于提供一种高压直流接触器的旋转式触头,该触头能够避免在相同的位置吸合与断开,减缓触点劣化的进程,提高触点的使用寿命。本技术解决其技术问题所采用的技术方案是:一种高压直流接触器的旋转式触头,包括动触头与静触头,电磁铁与动铁芯形成配合驱动动触头;所述动铁芯外端设有止挡环,动铁芯外壁设有止挡圈,所述动触头位于止挡环与止挡圈之间,动触头内侧沿轴向依次连接有同心的不锈钢环与铜环,动触头、不锈钢环与铜环均套设于动铁芯外周并能够与动铁芯滑动配合;动铁芯外周还套设有超程弹簧,超程弹簧位于铜环与止挡圈之间。本技术的有益效果是,当电磁铁得电时,动铁芯驱动动触头与静触头相接触,此时超程弹簧被压缩,超程弹簧被压缩时在动触头径向产生力的分量,使动触头产生旋转;当电磁铁失电时,动铁芯复位,使动触头与静触头相分离,超程弹簧复位时也同样在动触头径向产生力的分量,使动触头反向旋 ...
【技术保护点】
1.一种高压直流接触器的旋转式触头,包括动触头与静触头,电磁铁与动铁芯形成配合驱动动触头,其特征在于,所述动铁芯外端设有止挡环,动铁芯外壁设有止挡圈,所述动触头位于止挡环与止挡圈之间,动触头内侧沿轴向依次连接有同心的不锈钢环与铜环, 动触头、不锈钢环与铜环均套设于动铁芯外周并能够与动铁芯滑动配合;动铁芯外周还套设有超程弹簧,超程弹簧位于铜环与止挡圈之间。
【技术特征摘要】
1.一种高压直流接触器的旋转式触头,包括动触头与静触头,电磁铁与动铁芯形成配合驱动动触头,其特征在于,所述动铁芯外端设有止挡环,动铁芯外壁设有止挡圈,所述动触头位于止挡环与止挡...
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