The utility model discloses a probe for adding steel beads between the end face of the needle shaft and the spring, which is characterized in that it comprises a needle tube, the left end of the needle tube is a closed end, and the right end of the needle tube is provided with an open opening or riveting opening for the needle shaft to extend; a spring is arranged in the tube cavity of the needle tube, and a steel bead is arranged between the end end of the needle shaft and the spring, and the head of the needle shaft. The end passes through the opening or riveting opening and exposes to the needle tube; the tail end of the needle shaft is an oblique angle, and the oblique angle is 70 degrees to 80 degrees. In the utility model, the contact surface between the end of the needle shaft and the spring is changed to a 72-degree slope slope, and a steel ball is arranged between the end of the needle shaft and the spring. After the slope of the end of the needle shaft is contacted with the steel ball during the downward pressing of the probe shaft, the sharp angle of the slope of the needle shaft moves towards the inner wall of the needle tube and keeps close to the inner wall of the needle tube, thereby reducing the contact resistance of the probe. When the spring contacts with the steel ball under uniform force, the spring press down smoothly, thereby improving the service life of the probe.
【技术实现步骤摘要】
一种针轴尾端面与弹簧之间增加钢珠的探针
本技术涉及一种探针,尤其涉及一种针轴尾端面与弹簧之间增加钢珠的探针。
技术介绍
测试探针广泛应用于电子产品研发及生产测试的电气信号连接,测试探针的结构通常由针轴、针管和弹簧三部份组成,使用时,针轴向下压缩弹簧,针轴尾端通过弹簧和针管内孔底部接触来传导电信号;现有的针轴尾端面为平面结构或锥形结构,以上两种结构都存在接触电阻较大,稳定性和可靠性较差的问题,使得产品的测试直通率及稳定性较低。
技术实现思路
本技术的目的是解决现有技术中的问题,提供一种针轴尾端面与弹簧之间增加钢珠的探针。本技术的技术方案是:一种针轴尾端面与弹簧之间增加钢珠的探针,其特征在于:包括一针管,所述针管的左端为封闭端,所述针管的右端设有一供针轴伸出的敞口或收铆口;在所述针管的管腔内设有一弹簧,所述针轴的尾端与所述弹簧之间设有一钢珠,所述针轴的头端穿过所述敞口或收铆口外露于所述针管;所述针轴的尾端为一斜角,该斜角为70°至80°。优选地,所述斜角为72°。优选地,所述针管的左端设有一连接凸起。优选地,所述弹簧为曲形弹簧。优选地,所述针轴的尾端外径小于所述管腔内径。本技术将针轴尾端与弹簧的接触面改为72度坡斜边,并在所述针轴的尾端与所述弹簧之间设有一钢珠,在探针针轴下压过程中针轴尾端坡斜边与钢珠接触受力后,针轴坡斜边锐角处向针管内壁移动并紧贴针管内壁与其稳定接触,从而减小探针的接触电阻;同时弹簧与钢珠接触均匀受力后,弹簧下压顺滑,从而提高探针使用寿命,以最大限度增加接触的可靠性,从而提升了产品测试直通率。附图说明图1为本技术的结构示意图。具体实施方式为了使本技术 ...
【技术保护点】
1.一种针轴尾端面与弹簧之间增加钢珠的探针,其特征在于:包括一针管,所述针管的左端为封闭端,所述针管的右端设有一供针轴伸出的敞口或收铆口;在所述针管的管腔内设有一弹簧,所述针轴的尾端与所述弹簧之间设有一钢珠,所述针轴的头端穿过所述敞口外露于所述针管;所述针轴的尾端为一斜角,该斜角为70°至80°。
【技术特征摘要】
2018.04.17 CN 20182054337221.一种针轴尾端面与弹簧之间增加钢珠的探针,其特征在于:包括一针管,所述针管的左端为封闭端,所述针管的右端设有一供针轴伸出的敞口或收铆口;在所述针管的管腔内设有一弹簧,所述针轴的尾端与所述弹簧之间设有一钢珠,所述针轴的头端穿过所述敞口外露于所述针管;所述针轴的尾端为一斜角,该斜角为70°至...
【专利技术属性】
技术研发人员:彭书谦,
申请(专利权)人:上海呈标实业有限公司,
类型:新型
国别省市:上海,31
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