TWM620750U - Pogo pin - Google Patents

Abstract

This model is a spring needle, which includes a needle tube, which is a hollow tube body; an upper needle part, which is inserted in the needle tube; a lower needle part, which is inserted in the needle tube; a spring, which includes a wide Part, a narrow part and an extension part, the wide part and the narrow part are respectively located at two opposite ends of the spring, the extension part extends from the other end of the wide part relative to the narrow part toward the radial direction of the wide part to the center of the wide part , And bend in the axial direction of the wide part and extend in the direction of the narrow part. The spring is arranged in the needle tube with one end abutting against the upper needle part and the other end against the lower needle part; by applying a specific pressure to the spring, the spring is It can be fully compressed, which can reduce the generation of parasitic capacitance, resistance and inductance effects, and achieve the effect of reducing signal attenuation and improving current resistance during high-bandwidth signal transmission.

Description

Pogo pin

The new type relates to a pogo pin, especially a pogo pin with the effect of eliminating inductance.

The prior art pogo pin is mainly used to test whether the integrated circuit is operating normally. Please refer to Figure 5. The pogo pin includes a needle tube 90, an upper needle 91, a lower needle 92 and a spring 93. The needle tube 90 is in the middle. In the empty tube body, the upper needle 91 and the lower needle 92 are respectively penetrated at two opposite ends of the needle tube 90, the spring 93 is arranged between the upper needle 91 and the lower needle 92, and the two ends of the spring 93 abut against the upper needle 91 and the lower needle 92 respectively. The lower needle 92 allows the upper needle 91 and the lower needle 92 to move relative to the needle tube 90 respectively. The lower needle 92 of the pogo pin is used to abut the contact point of a PCB test board, and the upper needle 91 abuts the integrated circuit component to be tested The solder balls are electrically connected and the PCB test board is used to test whether the integrated circuit is operating normally.

However, please refer to FIG. 6, because the size of the spring 93 and the force against which the spring 93 is pressed have certain specifications when testing with the prior art pogo pin, the spring 93 arranged inside the needle tube 90 can provide test compression. The effect of time buffering is to prevent the surface of the solder ball from being damaged by impact due to excessive force. Therefore, when the spring 93 is compressed, the coils will not be completely closed. Therefore, when the spring pin is applied to the transmission of high-frequency signals, because the signal The transmission path must pass through the spring 93. When the high-frequency signal passes through, it will follow the spiral structure path of the coil. According to the principle of inductance, when the signal or current passes through the spiral structure path, parasitic capacitance and inductance effects will be generated. Capacitance and inductance effects will cause signal attenuation (Insertion Loss) during high-frequency measurement. According to Ohm’s law, resistance is proportional to the path length and inversely proportional to its cross-sectional area. When the material itself or the coating is The higher the resistance, mutual coupling capacitance, impedance, and transmission frequency, the attenuation of the signal will increase.

There is currently a new Taiwanese Patent Publication No. M534339, a one-piece coaxial elastic conductivity probe, which discloses a one-piece elastic wire as a probe for transmitting electronic signals and currents. Although this type of probe proposes improvements to the above-mentioned problems, There are still shortcomings in the improvement of signal attenuation. The main problem is that in the process of signal transmission through the spring, it is still difficult to ensure that the spring is fully closed during compression. When the spring is not fully closed, the signal is transmitted The path will still generate parasitic capacitance and inductance effects, which will cause signal attenuation. Therefore, the overall structure of the pogo pin in the prior art has the aforementioned problems and shortcomings, and it needs to be improved.

In view of the shortcomings of the prior art, the present invention provides a pogo pin. By forming the structure of the spring with a wide part, a narrow part and an extension part, the spring can be fully compressed after being compressed by a specific pressure.

In order to achieve the above-mentioned new purpose, the technical means adopted by the present invention is to design a pogo pin, which includes: A needle tube, which is a hollow tube body and has an inner space, one end of the needle tube is protrudingly provided with an upper stopper, the upper stopper is surrounded by an upper perforation, and the other end of the needle tube is protruded with a lower A stopper, the lower stopper is surrounded by a perforation; An upper needle part penetrated in the inner space of the needle tube, the upper needle part is adjacent to the upper stop part, and one end of the upper needle part passes through the upper perforation; A lower needle part, which penetrates through the inner space of the needle tube, the lower needle part is adjacent to the lower stop part, and one end of the lower needle part passes through the lower perforation; A spring comprising a wide part, a narrow part and an extension part, the wide part and the narrow part are respectively located at two opposite ends of the spring, and the outer diameter of the wide part is greater than the outer diameter of the narrow part, the extension The portion extends from the other end of the wide portion relative to the narrow portion in the radial direction of the wide portion to the center of the wide portion, and is bent in the axial direction of the wide portion and extends in the direction of the narrow portion, The spring is arranged in the needle tube and has one end against the upper needle part and the other end against the lower needle part.

Furthermore, in the spring needle, a tapered surface is formed between the wide part and the narrow part of the spring after being compressed.

Furthermore, in the pogo pin, the extension part is a rod body extending from the wide part.

Furthermore, in the spring needle, the wide part abuts against the lower needle part, and the narrow part abuts against the upper needle part.

Furthermore, in the spring needle, the upper needle part includes an upper needle and an upper needle seat, the outer diameter of the upper needle seat is greater than the outer diameter of the upper needle, the upper needle seat and the upper needle are located in the Two opposite ends of the upper needle part, the upper needle seat abuts against the narrow part of the spring, the lower needle part includes a lower needle and a lower needle seat, the outer diameter of the lower needle seat is larger than the outer diameter of the lower needle, the The lower needle seat and the lower needle head are located at two opposite ends of the lower needle part, and the lower needle seat abuts against the wide part of the spring.

Furthermore, in the spring needle, the upper needle part includes an upper needle and an upper needle seat, the outer diameter of the upper needle seat is greater than the outer diameter of the upper needle, the upper needle seat and the upper needle are located in the Two opposite ends of the upper needle part, the upper needle seat abuts against the wide part of the spring, the lower needle part includes a lower needle and a lower needle seat, the outer diameter of the lower needle seat is larger than the outer diameter of the lower needle, the The lower needle seat and the lower needle head are located at two opposite ends of the lower needle part, and the lower needle seat abuts against the narrow part of the spring.

Furthermore, in the spring needle, the outer diameter of the upper needle is larger than the outer diameter of the lower needle.

Furthermore, in the spring needle, the upper needle part further includes a positioning rod, the positioning rod is protrudingly arranged on the other end of the upper needle base relative to the upper needle, and the spring is sleeved on the positioning rod.

The advantage of the new model is that by applying a specific pressure to the spring, it can be fully compressed, thereby reducing the generation of parasitic capacitance, resistance and inductance effects, so as to reduce signal attenuation in the process of high-bandwidth signal transmission. And the effect of improving the ability to withstand current, and because the tapered surface is formed between the wide part and the narrow part of the compressed spring, it can provide micro-elasticity for the cushioning effect of the upper needle part and the lower needle part under pressure, and the extension part The structure can increase the coupling capacitance, reduce the inductance effect, and help increase the transmission bandwidth.

In conjunction with the drawings and the preferred embodiments of the present invention, the following further describes the technical means adopted by the present invention to achieve the intended purpose of the novel.

Please refer to FIG. 1, the pogo pin of the present invention includes a needle tube 10, an upper needle part 20, a lower needle part 30 and a spring 40.

Please refer to Figures 2 and 3, the needle tube 10 is a hollow tube body and has an internal space, one end of the needle tube 10 faces the axis of the needle tube 10 and protrudingly provided with an upper stop portion 11, the upper stop portion 11 An upper perforation 111 is circumferentially formed. A lower stopper 12 is protruded around the other end of the needle tube 10 facing the axis of the needle tube 10, and a lower perforation 121 is formed around the lower stopper 12.

The upper needle part 20 includes an upper needle 21, an upper needle seat 22 and a positioning rod 23. The outer diameter of the upper needle seat 22 is larger than the outer diameter of the upper needle 21 and the outer diameter of the positioning rod 23. The upper needle seat 22 is located on the upper needle Between 21 and the positioning rod 23, the upper needle portion 20 is inserted into the inner space of the needle tube 10, the upper needle portion 20 is adjacent to the upper stop portion 11, and one end of the upper needle 21 passes through the upper hole 111, and the upper needle The part 20 is a standard component of the prior art, and its detailed structure will not be repeated.

The lower needle part 30 includes a lower needle 31 and a lower needle seat 32. The outer diameter of the lower needle seat 32 is larger than that of the lower needle 31. The lower needle seat 32 and the lower needle 31 are located at two opposite ends of the lower needle part 30. 30 passes through the inner space of the needle tube 10, the lower needle portion 30 is adjacent to the lower stop 12, and one end of the lower needle 31 passes through the lower perforation 121. The outer diameter of the upper needle 21 is larger than the outer diameter of the lower needle 31 , The lower needle part 30 is a standard component of the prior art, and its detailed structure will not be repeated.

The spring 40 includes a wide portion 41, a narrow portion 42 and an extension portion 43. The wide portion 41 and the narrow portion 42 are respectively located at two opposite ends of the spring 40, and the outer diameter of the wide portion 41 is larger than the outer diameter of the narrow portion 42, and extends The portion 43 extends from the other end of the wide portion 41 relative to the narrow portion 42 in the radial direction of the wide portion 41 to the center position of the wide portion 41, and is bent in the axial direction of the wide portion 41 and extends in the direction of the narrow portion 42 Specifically, the extension portion 43 is a rod body extending from the wide portion 41, which forms a radial section 431 and an axial section 432 through multiple bendings. The radial section 431 is formed from the wide portion 41. The ends of the composed coil are bent and extended in the direction of the central axis, and the axial section 432 is a line section bent from the radial section 431 to the axial direction of the central axis, the radial section 431 and the axial section 432 The spring 40 is arranged in the needle tube 10 and the wide portion 41 abuts against the lower needle seat 32 of the lower needle portion 30, and the narrow portion 42 is sleeved on the positioning rod 23 and abuts against the upper needle seat 22 of the upper needle portion 20, However, it is not limited to this. The wide portion 41 is sleeved on the positioning rod 23 and abuts against the upper needle seat 22 of the upper needle portion 20, and the narrow portion 42 abuts against the lower needle seat 32 of the lower needle portion 30 to position The rod 23 is used to improve the stability of the spring 40.

When the new model is used to test the transmission of high-frequency signals, please refer to Figure 4. When the spring pin of the new model is pressed with the same standard force, because the spring 40 is in the same number of coils, the size of the wire diameter and the length Next, the outer diameter of a part of the coil is gradually reduced (ie the narrow portion 42), so that when the spring 40 is compressed, it can be fully compressed (ie, the coils are in close contact). The structure of the aforementioned spring 40 is changed to this area The conventional technology is not described in detail, and the fully compressed spring 40 has no helical coil type structure, which can reduce the parasitic capacitance, resistance and inductance effects, so as to achieve the reduction in the process of high-frequency signal transmission. The effect of signal attenuation and improvement of the ability to withstand current, and because a tapered surface 44 is formed between the wide portion 41 and the narrow portion 42 of the spring 40 after compression, the structure of the tapered surface 44 can still provide micro-elasticity for the upper needle portion 20 and the lower needle portion 30 have a buffering effect when they are compressed, and the structure of the extension portion 43 can increase the coupling capacitance. The larger the coupling capacitance, the smaller the inductance effect, which helps to increase the transmission bandwidth.

The above is only the preferred embodiment of this creation, and does not impose any formal restriction on this creation. Although this creation has been disclosed as above in preferred embodiments, it is not intended to limit this creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make some changes or modifications as equivalent embodiments of equivalent changes. However, any content that does not deviate from this creative technical solution shall be based on this Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of the technical solution for creation.

10: Needle tube 11: Upper stop 111: Upper Piercing 12: Lower stop 121: lower piercing 20: Upper needle 21: Upper needle 22: Upper needle seat 23: positioning rod 30: Lower needle 31: Lower the needle 32: Lower needle seat 40: spring 41: wide part 42: Narrow part 43: Extension 431: Radial segment 432: Axial section 44: Cone 90: Needle tube 91: Needle 92: Needle 93: Spring

Figure 1 is a three-dimensional partial cross-sectional view of the present invention. Figure 2 is an exploded view of the present invention. Figure 3 is a cross-sectional view of the present invention in an uncompressed state. Figure 4 is a cross-sectional view of the new compressed state. Figure 5 is a cross-sectional view of the prior art in an uncompressed state. Figure 6 is a cross-sectional view of the prior art in a compressed state.

10: Needle tube

11: Upper stop

111: Upper Piercing

12: Lower stop

121: lower piercing

20: Upper needle

21: Upper needle

22: Upper needle seat

23: positioning rod

30: Lower needle

31: Lower the needle

32: Lower needle seat

40: spring

41: wide part

42: Narrow part

43: Extension

Claims (10)

A pogo pin, which contains: A needle tube, which is a hollow tube body and has an inner space, one end of the needle tube is protrudingly provided with an upper stopper, the upper stopper is surrounded by an upper perforation, and the other end of the needle tube is protruded with a lower A stopper, the lower stopper is surrounded by a perforation; An upper needle part penetrated in the inner space of the needle tube, the upper needle part is adjacent to the upper stop part, and one end of the upper needle part passes through the upper perforation; A lower needle part, which penetrates through the inner space of the needle tube, the lower needle part is adjacent to the lower stop part, and one end of the lower needle part passes through the lower perforation; A spring comprising a wide part, a narrow part and an extension part, the wide part and the narrow part are respectively located at two opposite ends of the spring, and the outer diameter of the wide part is greater than the outer diameter of the narrow part, the extension The portion extends from the other end of the wide portion relative to the narrow portion in the radial direction of the wide portion to the center of the wide portion, and is bent in the axial direction of the wide portion and extends in the direction of the narrow portion, The spring is arranged in the needle tube and has one end against the upper needle part and the other end against the lower needle part. The spring needle according to claim 1, wherein a tapered surface is formed between the wide part and the narrow part of the spring after being compressed. The pogo pin according to claim 1 or 2, wherein the extension part is a rod extending from the wide part. The spring needle according to claim 3, wherein the wide part abuts against the lower needle part, and the narrow part abuts against the upper needle part. The pogo pin according to claim 4, wherein the upper needle portion includes an upper needle and an upper needle seat, the outer diameter of the upper needle seat is greater than the outer diameter of the upper needle, the upper needle seat and the upper needle are located in the Two opposite ends of the upper needle part, the upper needle seat abuts against the narrow part of the spring, the lower needle part includes a lower needle and a lower needle seat, the outer diameter of the lower needle seat is larger than the outer diameter of the lower needle, the The lower needle seat and the lower needle head are located at two opposite ends of the lower needle part, and the lower needle seat abuts against the wide part of the spring. The pogo pin according to claim 4, wherein the upper needle portion includes an upper needle and an upper needle seat, the outer diameter of the upper needle seat is greater than the outer diameter of the upper needle, the upper needle seat and the upper needle are located in the Two opposite ends of the upper needle part, the upper needle seat abuts against the wide part of the spring, the lower needle part includes a lower needle and a lower needle seat, the outer diameter of the lower needle seat is larger than the outer diameter of the lower needle, the The lower needle seat and the lower needle head are located at two opposite ends of the lower needle part, and the lower needle seat abuts against the narrow part of the spring. The spring needle according to claim 5, wherein the outer diameter of the upper needle is greater than the outer diameter of the lower needle. The spring needle according to claim 6, wherein the outer diameter of the upper needle is greater than the outer diameter of the lower needle. The pogo pin according to claim 7, wherein the upper needle portion further includes a positioning rod protruding from the other end of the upper needle base relative to the upper needle, and the spring is sleeved on the positioning rod. The pogo pin according to claim 8, wherein the upper needle portion further includes a positioning rod protruding from the other end of the upper needle base relative to the upper needle, and the spring is sleeved on the positioning rod.

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