Pogo Pin Connector Manufacturing Technology
1, flat bottom spring thimble
The needle of this structure is flat-bottomed, its processing is simple, the cost is low, and the coaxiality of the needle tube is relatively good, but there is the danger of the needle and the needle tube not contacting and power failure, and the contact impedance of the product is also very large. Products are usually used on occasions with very low product requirements and very low current.
2, Sectional bevel spring thimble
The needle with this structure is a bevel, its processing is cumbersome, the cost is relatively high, and the coaxiality of the needle tube is relatively poor, but the product needle and the needle tube are in good contact, and its contact impedance is also very small, mainly because the spring has a side to the needle elasticity. The component force in the direction promotes the stable contact between the needle and the needle tube. This structure is used in small electric current occasions.
3, Steel ball spring thimble
The needle of this structure is a cut bevel, and a steel ball is added under it. This structure is cumbersome to process, and the cost is high. Moreover, the coaxiality of the needle and the needle tube is relatively poor, and the space of the needle tube is relatively large. However, the contact between the product needle and the needle tube is good, and the contact impedance is also very small. A lateral force component promotes stable contact between the needle and the needle tube.
4, Inner sleeve spring thimble
The needle of this structure is a cut bevel, and an inner sleeve is added under it. This structure is cumbersome to process, costly, and the coaxiality of the needle tube is relatively poor, and the space occupied by the needle tube is smaller than that of the steel ball type, but the product needle and the needle tube are in good contact, and the contact impedance is also very small, mainly due to the elastic force of the spring on the needle. There is a lateral force component that promotes stable contact between the needle and the needle tube. The inner sleeve also adds a current flow channel, this structure is used in large current occasions.