A coaxial probe

Abstract

The utility model provides a kind of coaxial probe, belong to probe technical field.A kind of coaxial probe, including needle body, needle body includes detachable cylinder, thimble, bottom needle and first spring;Detachable cylinder includes upper cylinder, filling cylinder and lower cylinder, and the upper end of upper cylinder is connected with thimble, and the lower end of upper cylinder is connected with filling cylinder limit clamping;The lower end of lower cylinder is connected with bottom needle, and the upper end of lower cylinder is connected with filling cylinder limit clamping;Upper cylinder, filling cylinder and lower cylinder all have to place cavity, first spring is located in the cavity, and one end of first spring is fixed with thimble, and the other end is fixed with bottom needle.The utility model has the advantage that practicality is stronger.

Description

Technical Field

[0001] This invention belongs to the field of probe technology, specifically a coaxial probe. Background Technology

[0002] Probes are contact media for electrical testing and are high-precision electronic hardware components. Existing probe structures generally include a cylinder, a pin, and a spring. Current probes are manufactured and processed using a one-piece injection molding design, employing a fixed-length cylinder for integral injection molding. However, during use, because the cylinder length is fixed, some electrical testing spaces are insufficient for vertical probe placement, or the probe length is insufficient for electrical testing within certain test slots. This results in limited practicality and compatibility, and the probes have limited expandability. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in existing technologies and propose a solution. A coaxial probe with greater practicality.

[0004] The objective of this utility model can be achieved through the following technical solution: a coaxial probe, comprising a needle body, the needle body comprising a detachable cylindrical body, a top needle, a bottom needle, and a first spring; The detachable cylinder includes an upper cylinder, a filling cylinder, and a lower cylinder. The upper end of the upper cylinder is connected to the ejector pin, and the lower end of the upper cylinder is locked to the filling cylinder. The lower end of the lower cylinder is connected to the bottom pin, and the upper end of the lower cylinder is locked to the filling cylinder. The upper cylinder, filling cylinder and lower cylinder all have placement cavities. The first spring is located in the placement cavity. One end of the first spring is fixed to the ejector pin and the other end is fixed to the bottom pin. The upper cylinder has a first snap-fit ​​ring at one end, and the top of the filling cylinder has a first snap-fit ​​groove. The first snap-fit ​​ring is engaged with the first snap-fit ​​groove for limiting and snapping. The lower cylinder has a second locking ring at one end, and a second locking groove is provided at the bottom of the filling cylinder. The first locking ring is locked in place with the first locking groove.

[0005] Preferably, the upper cylinder has several through holes circumferentially formed.

[0006] Preferably, the upper cylinder, the filling cylinder, the lower cylinder, the first spring, the top pin, and the bottom pin are arranged on the same axis.

[0007] Preferably, the upper end of the ejector pin has a crown-shaped contact end.

[0008] Preferably, the surface of the spring is treated with nickel and gold electroplating.

[0009] Preferably, the bottom needle tip is made of high-hardness palladium alloy.

[0010] Compared with the prior art, the advantages of this utility model are: by adding a filling cylinder 52 with different length parameters that can be flexibly replaced between the upper cylinder 51 and the lower cylinder 53, the filling cylinder 52 with different length parameters can be selected according to the needs of the electrical testing environment. This is beneficial to select filling cylinders 52 with different length parameters according to the needs of the electrical testing environment, which has stronger practicality and compatibility, prevents the insufficient test expansion of the probe, has a higher utilization rate in multiple scenarios, makes electrical testing of the probe more convenient, and makes disassembly and replacement more convenient. Attached Figure Description

[0011] Fig. 1 This is a structural diagram of the present invention.

[0012] Fig. 2 This is a front sectional view of the present invention.

[0013] Fig. 3 This is an enlarged view of point A in this utility model.

[0014] In the diagram, 2 is the ejector pin; 3 is the bottom pin; 4 is the first spring; 51 is the upper cylinder; 52 is the filling cylinder; 53 is the lower cylinder; 54 is the placement cavity; 61 is the first retaining ring; 62 is the first retaining groove; 63 is the second retaining ring; 64 is the second retaining groove; 7 is the through hole; and 8 is the crown-shaped contact end. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figs. 1-3 As shown, a coaxial probe includes a needle body, which includes a detachable cylindrical body, a top needle 2, a bottom needle 3, and a first spring 4. The detachable cylinder includes an upper cylinder 51, a filling cylinder 52, and a lower cylinder 53. The upper end of the upper cylinder 51 is connected to the ejector pin 2, and the lower end of the upper cylinder 51 is locked to the filling cylinder 52. The lower end of the lower cylinder 53 is connected to the bottom pin 3, and the upper end of the lower cylinder 53 is locked to the filling cylinder 52. The upper cylinder 51, the filling cylinder 52 and the lower cylinder 53 all have a placement cavity 54. The first spring 4 is located in the placement cavity 54. One end of the first spring 4 is fixed to the ejector pin 2 and the other end is fixed to the bottom pin 3. The upper cylinder 51 has a first snap ring 61 at one end, and the top of the filling cylinder 52 is provided with a first snap groove 62, and the first snap ring 61 is snapped into the first snap groove 62 for limiting engagement. The lower cylinder 53 has a second locking ring 63 at one end, and the bottom of the filling cylinder 52 has a second locking groove 64. The first locking ring 61 is locked and engaged with the first locking groove 62.

[0017] In this utility model, the filling cylinder 52 is an easily replaceable part with different length parameters, and can be completely locked and engaged with the upper cylinder 51 and the lower cylinder 53.

[0018] By adopting the above structure, a filling cylinder 52 with different length parameters is added between the upper cylinder 51 and the lower cylinder 53. The filling cylinder 52 with different length parameters can be selected according to the needs of the electrical testing environment. Before installation, the upper cylinder 51 is installed with the top pin 2, and the lower cylinder 53 is installed with the bottom pin 3. The first spring 4 is installed in the placement cavity 54. Then, the first snap ring 61 at the bottom of the upper cylinder 51 is inserted into the first snap groove 62 of the filling cylinder 52, and the second snap ring 63 at the top of the lower cylinder 53 is inserted into the second snap groove 64 of the filling cylinder 52. This allows for the selection of filling cylinders 52 with different length parameters according to the needs of the electrical testing environment, which is more practical and compatible, prevents insufficient probe testing expandability, has a higher utilization rate in multiple scenarios, and makes the electrical testing of probes more convenient. At the same time, it is easier to disassemble and replace.

[0019] Specifically, such as Figs. 1-3 As shown, the upper cylinder 51 has several through holes 7 arranged around it.

[0020] By adopting the above structure and setting through hole 7, and by using a connector to pass through through hole 7 of upper cylinder 51 and abut against the bottom of ejector pin 2, it is beneficial to enhance the connection between upper cylinder 51 and ejector pin 2, and the connection is more secure.

[0021] like Figs. 1-3 As shown, the upper cylinder 51, the filling cylinder 52, the lower cylinder 53, the first spring 4, the top pin 2, and the bottom pin 3 are arranged on the same axis.

[0022] like Figs. 1-3 As shown, the upper end of the ejector pin 2 has a crown-shaped contact end 8. By setting the crown-shaped contact end 8, compared with the spherical or conical contact head structure, the contact rate and contact stability are improved through a larger contact area, which can provide multi-point contact and improve contact stability and accuracy.

[0023] like Figs. 1-3 As shown, the surface of the spring is treated with nickel and gold electroplating. This helps to improve its working strength and extend the service life of the device.

[0024] like Figs. 1-3 As shown, the tip of the base needle 3 is made of high-hardness palladium alloy. The high-hardness palladium alloy tip of the base needle 3, combined with a composite plating process, exhibits excellent conductivity, wear resistance, and corrosion resistance, which helps to improve probe lifespan and repeatability.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0027] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A coaxial probe, comprising a needle body, characterized in that, The needle body includes a detachable cylindrical body, a top needle (2), a bottom needle (3), and a first spring (4); The detachable cylinder includes an upper cylinder (51), a filling cylinder (52) and a lower cylinder (53). The upper end of the upper cylinder (51) is connected to the ejector pin (2), and the lower end of the upper cylinder (51) is locked to the filling cylinder (52). The lower end of the lower cylinder (53) is connected to the bottom pin (3), and the upper end of the lower cylinder (53) is locked to the filling cylinder (52). The upper cylinder (51), the filling cylinder (52) and the lower cylinder (53) all have a placement cavity (54). The first spring (4) is located in the placement cavity (54). One end of the first spring (4) is fixed to the ejector pin (2) and the other end is fixed to the bottom pin (3). The upper cylinder (51) has a first snap ring (61) at one end, and the top of the filling cylinder (52) is provided with a first snap groove (62), and the first snap ring (61) is snapped into the first snap groove (62) for limiting engagement; The lower cylinder (53) has a second snap ring (63) at one end, and the bottom of the filling cylinder (52) is provided with a second snap groove (64). The first snap ring (61) is engaged with the first snap groove (62).

2. A coaxial probe according to claim 1, characterized in that, The upper cylinder (51) is provided with several through holes (7) around its circumference.

3. A coaxial probe according to claim 1, characterized in that, The upper cylinder (51), the filling cylinder (52), the lower cylinder (53), the first spring (4), the top pin (2), and the bottom pin (3) are arranged on the same axis.

4. A coaxial probe according to claim 1, characterized in that, The upper end of the ejector pin (2) has a crown-shaped contact end (8).

5. A coaxial probe according to claim 1, characterized in that, The surface of the spring is treated with nickel and gold electroplating.

6. A coaxial probe according to claim 1, characterized in that, The needle tip of the bottom needle (3) is made of high-hardness palladium alloy.

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