Spring needle interface device capable of adjusting needle pressure

Abstract

A spring needle interface device capable of adjusting needle pressure is characterized in that at least one spring needle and at least one needle pressure adjusting device are arranged on a spring needle interface, at least one end of the spring needle is provided with a telescopic needle head, a compression spring is arranged in the spring needle, and the needle pressure adjusting device is provided with at least one adjusting knob. The compression degree of the compression spring or the convex length of the lower end of the spring needle can be conveniently and quickly changed only by screwing the adjusting knob, so that the needle pressure of the spring needle can be easily and independently adjusted and changed, and the interface of the spring needle has a better adjusting function; even the spring needles with different thicknesses can be flexibly replaced and used, so that various changes of actual application requirements can be more easily adapted, the practicability of the spring needle interface can be effectively improved, in addition, a buffering mechanism can be additionally arranged in the needle pressure adjusting device, the durability degree of the spring needle interface is improved, and the spring needle interface is not prone to being damaged.

Description

Technical Field

[0001] This invention relates to an adjustable needle pressure spring needle interface device, mainly used in the spring needle interface of automatic testing systems. This invention can flexibly adjust the needle pressure of the spring needle interface or change the protruding length of the spring needle relative to the spring needle interface. It can also add a buffer spring to improve its buffering capacity, so that the spring needle interface has better adjustment function, is more stable, reliable and durable. It can even allow users to replace spring needles of different thicknesses to support more diverse testing application needs. Background Technology

[0002] With the rapid development of the semiconductor industry, the demand for automated test equipment is also increasing. Spring pin interfaces have been widely used in automated test systems. Previous technologies have mostly focused on how to increase the pin density, reduce contact resistance, increase signal bandwidth, or reduce noise and crosstalk, etc.

[0003] See Figure 31 As shown, a conventional spring pin interface 1 is disclosed, including a spring pin fixing base 101 and a plurality of spring pins 102. The spring pin fixing base 101 is typically made of insulating material and has a plurality of fixing holes 105. Each spring pin 102 is respectively disposed in each of the fixing holes 105, and one end of each spring pin 102 is electrically connected to a signal line 103 through a connector 104. However, the spring pin interface 1 cannot flexibly adjust the pin pressure characteristics of each spring pin 102 or flexibly change the protrusion length of each spring pin 102 relative to the spring pin fixing base 101. It can only be adjusted by changing the spring pin interface 1 and the mating object (e.g., a probe). The conventional art uses the overall relative distance between the spring pins 102 to increase or decrease the needle pressure of all the spring pins 102, which does not allow for the flexible selection of specific spring pins 102 to increase or decrease the needle pressure. Furthermore, the diameter of the spring pins 102 used in this conventional art must be strictly designed to match the hole diameter of the fixing holes 105 of the spring pin fixing base 101. If the diameter of the spring pins 102 needs to be changed due to new application requirements, the spring pin fixing base 101 usually has to be replaced. The spring pin fixing base 101 must be redesigned and manufactured according to the changes in the hole diameter specifications of the fixing holes 105, which is very unadaptable.

[0004] See Figure 32As shown, another conventional spring needle interface 2 is disclosed, including a spring needle fixing base 201 with multiple fixing holes 205, multiple spring needles 202 and multiple needle sleeves 204, and multiple signal lines 203. Each needle sleeve 204 is disposed in each fixing hole 205, and each spring needle 202 is disposed in the spring needle fixing base 201 through each needle sleeve 204. Each signal line 203 is electrically connected to the end of each needle sleeve 204 by soldering. If a spring needle 202 malfunctions or is damaged, it must be pulled down with the help of appropriate tools and then replaced. This conventional technology does not allow the user to flexibly adjust the needle pressure of a spring needle 202. Although the user can replace the spring needle 202 himself, it is strictly limited by the inner diameter of the needle sleeves 204 and the fixing holes 205, so the user cannot change the spring needles 202 of different thicknesses.

[0005] See also Figure 33 As shown, a conventional automatic testing system 3 is disclosed. A spring pin interface 302 is provided below a test head 301. The spring pin interface 302 is provided with multiple spring pins 304, and a probe card 303 is provided below the spring pin interface 302. If it is necessary to adjust the needle pressure, it is mainly done by operating a lifting mechanism 305 to adjust the height of the test head 301. This changes the relative distance between the spring pin interface 302 and the probe card 303. In this way, the internal spring compression degree of the spring pins 304 can be changed, thereby changing the contact force (needle pressure) applied by the spring pins 304 to the probe card 303. However, this adjustment method can only increase or decrease the needle pressure of all spring pins 304 as a whole, and cannot flexibly select to adjust the needle pressure of a part or a certain spring pin 304.

[0006] As can be seen from the above, conventional technology cannot flexibly adjust the needle pressure of the spring pin interface, nor can it flexibly change spring pins of different thicknesses. For diverse testing needs, the spring pin interface of conventional technology still has too many limitations, which is not conducive to the flexible application of automatic testing systems.

[0007] In order to overcome the many limitations of existing technologies, the inventors, through long-term observation and active thinking, as well as numerous prototype experiments and related improvements, developed an adjustable needle pressure spring needle interface device that can completely solve or effectively improve many shortcomings of existing technologies. Summary of the Invention

[0008] The purpose of this invention is to provide an adjustable needle pressure spring needle interface device, which has a simple structure and is easy to operate. It can flexibly adjust the needle pressure of the spring needle interface or change the protrusion length of the spring needle relative to the spring needle interface. It can also add a buffer spring to improve its buffering capacity, so that the spring needle interface has better adjustment function, is more stable, reliable and durable. It can even allow users to replace spring needles of different thicknesses to support more diverse testing application needs.

[0009] To achieve the above objectives, the present invention discloses a spring needle interface device with adjustable needle pressure, characterized in that it comprises:

[0010] A spring needle interface base is provided with at least one spring needle, at least one end of which is provided with a telescopic needle head, and an insulating member is sleeved on the outside of the spring needle.

[0011] At least one needle pressure adjustment device is disposed on the spring needle interface base. The needle pressure adjustment device includes an adjustment knob and a knob fixing seat. The upper end of the adjustment knob is provided with a signal connector, and the lower part of the signal connector is provided with a contact terminal electrically connected to the signal connector. The upper end of the spring needle abuts against the contact terminal to form an electrical connection. The adjustment knob has a knob thread section formed on the outer side of its lower end. The knob fixing seat is provided with at least one positioning screw hole. The knob thread section is screwed into the positioning screw hole, so that turning the adjustment knob can control the adjustment knob to move up and down relative to the knob fixing seat.

[0012] The insulating component is fitted with a shielding sleeve on its outer side, and the shielding sleeve has a sleeve opening at each end.

[0013] The knob fixing base and the spring pin interface base are integrally formed.

[0014] It also includes an auxiliary spring, which is located on the outside of the insulating member or on the inside of the insulating member.

[0015] It also includes an auxiliary spring, which is located outside the shielding sleeve or inside the shielding sleeve.

[0016] It also includes an auxiliary spring, which is disposed between the shielding sleeve and the knob fixing seat.

[0017] The connection between the signal connector and a signal line is achieved through welding, crimping, screwing, snap-fitting, or screw fastening.

[0018] A locking screw is screwed onto one side of the knob fixing base, and the locking screw abuts against the knob thread section of the adjustment knob.

[0019] The knob mounting base is secured to the top of the spring pin interface base using at least one fixing screw.

[0020] A buffer spring is provided between the fixing screw and the knob fixing seat.

[0021] The knob fixing seat has an external thread at its lower end, and the spring pin interface base has an internal thread corresponding to the external thread so that the knob fixing seat can be directly screwed to the top of the spring pin interface base.

[0022] The insulating component has an auxiliary threaded section on its outer side, and the spring pin interface base has an auxiliary internal threaded hole corresponding to the auxiliary threaded section, so that the auxiliary threaded section is screwed into the auxiliary internal threaded hole.

[0023] The shielding sleeve has an auxiliary threaded section on its outer side, and the spring pin interface base has an auxiliary internal threaded hole corresponding to the auxiliary threaded section, so that the auxiliary threaded section is screwed into the auxiliary internal threaded hole.

[0024] A spring needle interface device with adjustable needle pressure is also disclosed, characterized by comprising:

[0025] A spring needle interface base is provided with at least one spring needle, at least one end of which is provided with a telescopic needle head, and an insulating member is sleeved on the outside of the spring needle.

[0026] At least one needle pressure adjustment device is disposed on the spring needle interface base. The needle pressure adjustment device includes an adjustment knob and a knob fixing seat. The upper end of the adjustment knob is provided with a signal connector, and the lower part of the signal connector is provided with a contact terminal electrically connected to the signal connector. The upper end of the spring needle abuts against the contact terminal to form an electrical connection. A tubular structure is integrally formed below the knob fixing seat, and at least a portion of the tubular structure is disposed inside the spring needle interface base. The adjustment knob forms a knob thread section on the lower external side. The knob fixing seat is provided with at least one positioning screw hole. The insulating member can be inserted into the tubular structure through the positioning screw hole, and the knob thread section is screwed into the positioning screw hole, so that turning the adjustment knob can control the adjustment knob to move up and down relative to the knob fixing seat.

[0027] It also includes an auxiliary spring, which is located on the outside of the insulating member or on the inside of the insulating member.

[0028] The connection between the signal connector and a signal line is achieved through welding, crimping, screwing, snap-fitting, or screw fastening.

[0029] A locking screw is screwed onto one side of the knob fixing base, and the locking screw abuts against the knob thread section of the adjustment knob.

[0030] The knob mounting base is secured to the top of the spring pin interface base using at least one fixing screw.

[0031] A buffer spring is provided between the fixing screw and the knob fixing seat.

[0032] The knob fixing seat has an external thread at its lower end, and the spring pin interface base has an internal thread corresponding to the external thread so that the knob fixing seat can be directly screwed to the top of the spring pin interface base.

[0033] As can be seen from the above structure, the advantages of the present invention are as follows:

[0034] 1. Flexible adjustment of needle pressure at the spring needle interface: This invention allows for flexible adjustment of the needle pressure at the spring needle interface. Users can select the spring needle that needs adjustment and change the needle pressure by turning the adjustment knob. The implementation of this invention can also be varied according to different application requirements, so that the protrusion length of the spring needle relative to the spring needle interface can be fixed or changed. Furthermore, a shielding sleeve with a shielding effect or a tubular structure integrally formed with the knob fixing base can be added, thus supporting more advanced measurement applications (e.g., ultra-low current measurement or low noise measurement).

[0035] 2. Flexible spring pins of varying thicknesses: This invention also allows users to change the spring pins of different thicknesses. Users only need to replace the spring pin and the insulating component, without having to replace the entire spring pin interface. This flexibility allows the spring pin interface to have better adaptability and provides more ideal support for diverse testing application needs, making the spring pin interface more practical.

[0036] 3. Improves the durability of the spring pin interface: In a different embodiment, a buffer spring can be provided on the knob fixing seat to absorb the impact force on the spring pin interface, which helps to improve the durability of the spring pin interface and make it less prone to damage. Attached Figure Description

[0037] Figure 1 This is a perspective view of the first embodiment of the present invention.

[0038] Figure 2 This is a cross-sectional view of the first embodiment of the present invention.

[0039] Figure 3 This is a perspective view of the second embodiment of the present invention.

[0040] Figure 4 This is an exploded view of the second embodiment of the present invention.

[0041] Figure 5 This is a cross-sectional view of the second embodiment of the present invention.

[0042] Figure 6 This is a perspective view of the third embodiment of the present invention.

[0043] Figure 7 This is a cross-sectional view of the third embodiment of the present invention.

[0044] Figure 8 This is a perspective view of the fourth embodiment of the present invention.

[0045] Figure 9 This is a cross-sectional view of the fourth embodiment of the present invention.

[0046] Figure 10 This is a perspective view of the fifth embodiment of the present invention.

[0047] Figure 11 This is a cross-sectional view of the fifth embodiment of the present invention.

[0048] Figure 12 This is a perspective view of the sixth embodiment of the present invention.

[0049] Figure 13 This is a cross-sectional view of the sixth embodiment of the present invention.

[0050] Figure 14 for Figure 13 A schematic diagram of a thick spring needle.

[0051] Figure 15 This is a perspective view of the seventh embodiment of the present invention.

[0052] Figure 16 This is a cross-sectional view of the seventh embodiment of the present invention.

[0053] Figure 17 This is a perspective view of the eighth embodiment of the present invention.

[0054] Figure 18 This is a cross-sectional view of the eighth embodiment of the present invention.

[0055] Figure 19 for Figure 18 A diagram showing how to turn the adjustment knob.

[0056] Figure 20 This is a perspective view of the ninth embodiment of the present invention.

[0057] Figure 21 for Figure 20 A diagram showing how to turn the adjustment knob.

[0058] Figure 22 This is a cross-sectional view of the ninth embodiment of the present invention.

[0059] Figure 23 for Figure 21 A sectional view.

[0060] Figure 24 This is a perspective view of the tenth embodiment of the present invention.

[0061] Figure 25 This is a cross-sectional view of the tenth embodiment of the present invention.

[0062] Figure 26 for Figure 25 A schematic diagram of a screw-on insulating component.

[0063] Figure 27 This is a perspective view of the eleventh embodiment of the present invention.

[0064] Figure 28 This is a cross-sectional view of the eleventh embodiment of the present invention.

[0065] Figure 29 This is a perspective view of the twelfth embodiment of the present invention.

[0066] Figure 30 This is a cross-sectional view of the twelfth embodiment of the present invention.

[0067] Figure 31 This is a 3D view of the commonly used spring pin interface.

[0068] Figure 32 A three-dimensional view of the spring pin interface in another configuration.

[0069] Figure 33 This is a schematic diagram of a commonly used automated testing system. Detailed Implementation

[0070] Please see Figure 1 and Figure 2 The figure shown is a perspective view and a cross-sectional view of the first embodiment of the present invention, which discloses an adjustable needle pressure spring needle interface device 100, which includes:

[0071] A spring needle interface 10 is provided with a spring needle interface base 12. The spring needle interface base 12 is provided with a spring needle 11. The spring needle 11 is attached to a needle tube 111 and a telescopic needle head 112 is provided at both ends. However, in some embodiments, the spring needle 11 may only have the telescopic needle head 112 at one end. In this embodiment, a compression spring 113 is provided inside the needle tube 111, and an insulating member 14 is sleeved on the outside of the spring needle 11.

[0072] A needle pressure adjustment device 20 is disposed on the spring needle interface base 12. The needle pressure adjustment device 20 includes an adjustment knob 21 and a knob fixing seat 22. The upper end of the adjustment knob 21 is provided with a signal connector 211. A center conductor 214 is disposed inside the signal connector 211, and a contact terminal 212 electrically connected to the center conductor 214 is disposed below the signal connector 211. A knob thread section 213 is formed on the lower external part of the adjustment knob 21. In this embodiment, the knob fixing seat 22 is locked to the top of the spring needle interface base 12 by two fixing screws 221. However, in actual applications, the combination of the two can have many equivalent variations, and this embodiment is not used. The disclosed method is limited. For example, the two can be manufactured using an integral molding design, so that the two can be combined into one piece without the need to use the fixing screws 221 for locking. This can effectively simplify the number of components and assembly process. In this embodiment, the knob fixing seat 22 is provided with a positioning screw hole 222, and the knob thread section 213 is screwed into the positioning screw hole 222. Thus, by turning the adjusting knob 21, the adjusting knob 21 can be controlled to move up and down relative to the knob fixing seat 22. The adjusting knob 21 is installed in such a way that the adjusting knob 21 can be turned appropriately so that the telescopic needle head 112 at the upper end of the spring needle 11 abuts against the contact terminal 212 to form an electrical connection.

[0073] The design of the contact terminal 212 and the design of the upper end of the spring pin 11 can be easily modified in various equivalent ways. As long as the electrical connection can be achieved, they can be considered equivalent designs. For example, the design of the contact terminal 212 can be changed to a metal pin, spring pin, or metal spring, etc., which also have conductive capabilities. In addition, the design of the signal connector 211 can also be modified in various equivalent ways, as long as it can help connect a signal line (not shown) to the upper end of the adjustment knob 21. It is not limited to the embodiments disclosed in this invention.

[0074] The spring pin interface base 12 is made of insulating material. In this embodiment, both the adjustment knob 21 and the knob fixing seat 22 are made of conductive metal material, so that the adjustment knob 21 and the knob fixing seat 22 form an electrical connection to support the requirements of certain applications. Since the insulating component 14 can provide good insulation, in some embodiments, the spring pin interface base 12 can be made of conductive material, and in some embodiments, the knob fixing seat 22 or the adjustment knob 21 can be made of insulating material. The selection of the aforementioned materials can be flexibly optimized to meet the different actual application requirements.

[0075] If the user wants to increase the needle pressure of the spring needle 11, they can turn the adjustment knob 21 to move it downward. At this time, the contact terminal 212 will push the telescopic needle head 112 at the upper end of the spring needle 11 downward, and the telescopic needle head 112 will compress the compression spring 113 inside the needle tube 111. This will cause the compression spring 113 to exert a greater force on the telescopic needle head 112 at the lower end of the spring needle 11, thus increasing the needle pressure of the spring needle 11. Furthermore, if the user wants to replace the spring needle 11 with one of different thicknesses, they only need to replace the insulating part 14 and select a spring needle 11 with one of different thicknesses. It is not necessary to replace the entire set of spring needle interfaces 10.

[0076] See Figures 3 to 5 As shown, this is the second embodiment of the present invention. The difference from the first embodiment is that a shielding sleeve 15 is fitted on the outside of the insulating member 14. The shielding sleeve 15 has a sleeve opening 151 at both ends, and the opening 151 at the upper end of the shielding sleeve 15 has a larger diameter. The shielding sleeve 15 can be made of metal or contain conductive material. In this embodiment, both the adjusting knob 21 and the knob fixing seat 22 are made of conductive material. The shielding sleeve 15 is electrically connected to the knob fixing seat 22 and indirectly forms an electrical connection with the adjusting knob 21. The shielding sleeve 15 is helpful for some particularly sensitive measurement applications (e.g., ultra-low current or ultra-low noise testing). For these special application requirements, various variations can be used to achieve the electrical connection between the shielding sleeve 15 and the adjusting knob 21, and it is not limited to the embodiment disclosed in this invention.

[0077] The following describes how to assemble the adjustable needle pressure spring needle interface device 100 in this embodiment. First, the shielding sleeve 15 is placed into a positioning hole 16 of the spring needle interface base 12, and the spring needle 11 is inserted into the insulating member 14 and then placed into the shielding sleeve 15. Next, the knob fixing seat 22 is locked to the top of the spring needle interface base 12 using two fixing screws 221. Then, the adjusting knob 21 is screwed into the positioning screw hole 222. Thus, the user can change the screw depth of the adjusting knob 21 according to the application requirements, thereby changing the needle pressure of the spring needle 11. Then, a signal line (not shown in the figure in this embodiment) is connected to the signal connector 211, so that the signal line is electrically connected to the spring needle 11.

[0078] Continue reading Figure 6 and Figure 7As shown, this is the third embodiment of the present invention. Unlike the second embodiment described above, the spring pin interface base 12 has two spring pins 11, two insulating elements 14, and two shielding sleeves 15. The knob fixing base 22 has two positioning screw holes 222, allowing the installation of two adjusting knobs 21. Both the knob fixing base 22 and the two adjusting knobs 21 are made of conductive metal, enabling an electrical connection between each adjusting knob 21 and the knob fixing base 22. This supports the special signal wiring requirements of certain testing applications. Furthermore, each insulating element 14... An auxiliary spring 17 is respectively fitted on the outer side of each of the adjustment knobs 21. Each auxiliary spring 17 is located inside each of the shielding sleeves 15. In this embodiment, the upper end of each auxiliary spring 17 abuts against the lower end of each adjustment knob 21. The auxiliary springs 17 and the shielding sleeves 15 are made of a metal with good conductivity, and may even be gold-plated. The setting of the auxiliary springs 17 can strengthen the electrical connection between the adjustment knobs 21 and the shielding sleeves 15. Moreover, the elastic force of the auxiliary springs 17 helps to prevent the adjustment knobs 21 from loosening and shaking.

[0079] Continue reading Figure 8 and Figure 9 As shown, this is the fourth embodiment of the present invention. The difference from the second embodiment is that a locking screw 223 is screwed onto one side of the knob fixing base 22. The locking screw 223 can be screwed in and abut against the knob thread section 213 of the adjustment knob 21. With the help of the locking screw 223, the adjustment knob 21 can be prevented from being accidentally touched and the needle pressure is accidentally changed. Therefore, it helps to ensure that the adjustment knob 21 can maintain the needle pressure setting stably and reliably, and it is not easily disturbed by mechanical vibration and shaken. If the needle pressure setting needs to be adjusted, the locking screw 223 can be loosened first, and then the adjustment knob 21 can be turned to change the needle pressure. After the needle pressure setting is completed, the locking screw 223 can be tightened.

[0080] Continue reading Figure 10 and Figure 11 As shown, this is the fifth embodiment of the present invention. The difference from the second embodiment is that a buffer spring 224 is provided between each fixing screw 221 and the knob fixing seat 22. The compression capacity of the buffer springs 224 helps to absorb the impact force borne by the spring pin interface 10, which can reduce the impact force borne by the spring pin interface 10 when it suddenly comes into contact with the target object or suffers an accidental collision. Therefore, it can reduce the probability of damage to the spring pin interface 10, increase its durability, and extend its service life.

[0081] Continue reading Figure 12 and Figure 13As shown, this is the sixth embodiment of the present invention. The difference from the aforementioned second embodiment is that the lower end of the knob fixing seat 22 has an external thread 225, and the spring pin interface base 12 has an internal thread hole 18 corresponding to the external thread 225. This allows the knob fixing seat 22 to be directly screwed onto the top of the spring pin interface base 12, thus eliminating the need for the fixing screws 221 of the second embodiment for securing it. Furthermore, the outer side of the insulating member 14 is fitted with an auxiliary spring 17 as disclosed in the third embodiment. The auxiliary spring 17 is located between the knob fixing base 22 and the shielding sleeve 15, and is situated outside the shielding sleeve 15. In this embodiment, the auxiliary spring 17, the adjusting knob 21, the knob fixing base 22, and the shielding sleeve 15 are all made of conductive metal. Therefore, the electrical connection between the adjusting knob 21 and the shielding sleeve 15 can be achieved through the bridging of the auxiliary spring 17 and the knob fixing base 22. This allows the signal shielding capability to be continuously extended from the upper end of the adjusting knob 21 to the lower end of the shielding sleeve 15, thus providing a very good shielding effect.

[0082] For reference Figure 14 If some testing applications require a spring needle 11 with a larger diameter, the user can replace the spring needle 11 and the insulating part 14 to meet the requirements. As can be seen from this embodiment, the adjustable needle pressure spring needle interface device 100 of the present invention can flexibly adjust the needle pressure of the spring needle 11 and replace the spring needle 11 with different diameters, thus making it easier to support diverse application requirements.

[0083] Continue reading Figure 15 and Figure 16 As shown, this is the seventh embodiment of the present invention. Similar to the sixth embodiment described above, the knob fixing seat 22 can be directly screwed to the top of the spring pin interface base 12. The difference lies in that a tubular structure 23 is integrally formed below the external thread portion 225 of the knob fixing seat 22. Part of the tubular structure 23 is disposed inside the spring pin interface base 12, combining the two originally separately manufactured components (the knob fixing seat 22 and the shielding sleeve 15) into one, reducing the number of components and simplifying the assembly process. For simplification, and in this embodiment, the insulating member 14 is disposed within the tubular structure 23, and an auxiliary spring 17 is disposed inside the insulating member 14. Furthermore, a fixed needle head 114 protrudes from the upper end of the spring needle 11. The user can operate the needle pressure adjustment device 20 to change the outward protrusion length of the spring needle 11 relative to the spring needle interface base 12, so that the spring needle 11 protrudes further from the lower end face of the spring needle interface base 12. The spring needle 11 can then generate greater needle pressure when it abuts against a probe card (not shown).

[0084] The integral molding of the knob fixing base 22 and the tubular structure 23 can be made of conductive or insulating materials depending on the actual application requirements. For example, in order to meet the testing application requirements of ultra-low micro-current measurement, a metal conductive material can be used. In this way, the tubular structure 23 below the knob fixing base 22 can also have the shielding effect provided by the shielding sleeve 15 in the sixth embodiment. Moreover, the length of the tubular structure 23 can be designed to vary according to the application requirements, so that it is at least partially or entirely located inside the spring pin interface base 12.

[0085] Please refer to further reading Figures 17 to 19 As shown, this is the eighth embodiment of the present invention. The main difference between this embodiment and the aforementioned fourth embodiment is that it also adopts the same integral molding design as the aforementioned seventh embodiment, so that the knob fixing seat 22 and the tubular structure 23 are integrated into one piece. Moreover, as in the seventh embodiment, in order to reduce the parasitic resistance of the spring needle 11, the upper end of the spring needle 11 is not provided with the telescopic needle head 112, but instead is provided with the fixed needle head 114. Therefore, turning the adjustment knob 21 will not directly change the compression degree of the compression spring 113. However, on the other hand, the auxiliary spring 17, as disclosed in the third embodiment, is sleeved on the outer side below the insulating member 14. The telescopic ability of the auxiliary spring 17 allows the operation of the needle pressure adjustment device 20 to change the protruding length of the lower end of the spring needle 11 (e.g., Figure 19 As shown), the spring pin 11 protrudes further from the lower end face of the spring pin interface base 12, so that the spring pin 11 can generate a larger needle pressure when it comes into contact with a probe card (not shown). Moreover, this embodiment also uses the locking screw 223, which can prevent accidental adjustment of the needle pressure setting.

[0086] See also Figures 20 to 23As shown, this is the ninth embodiment of the present invention. The difference from the aforementioned second embodiment is that the spring pin 11 only has the telescopic needle head 112 at its lower end. The upper end of the spring pin 11, as in the aforementioned eighth embodiment, is equipped with a fixed needle head 114. Additionally, an auxiliary spring 17, as disclosed in the third embodiment, is provided. The auxiliary spring 17 is sleeved on the outside of the shielding sleeve 15, and the lower end of the adjusting knob 21 directly contacts the upper end of the shielding sleeve 15 for electrical connection. Furthermore, both the auxiliary spring 17 and the compression spring 113 can be provided... The upward contact force helps improve the stability of the electrical connection, ensuring the transmission quality of the test signal and making it suitable for precision measurement applications. In this embodiment, the signal connector 211 is electrically connected to a signal line 24, which is a coaxial signal line. The signal connector 211 and the signal line 24 are electrically connected by soldering and using a crimp sleeve 215. However, the electrical connection between the two can be achieved by crimping, screwing, snap-fitting, screw locking, or other equivalent methods, and is not limited to the method disclosed in this embodiment.

[0087] Additionally, by operating the adjustment knob 21, both the spring pin 11 and the shielding sleeve 15 can protrude further from the lower end face of the spring pin interface base 12 (e.g., Figure 23 As shown), the needle pressure adjustment device 20 can simultaneously change the protrusion length of the spring needle 11 and the shielding sleeve 15 relative to the lower end face of the spring needle interface base 12, so that the spring needle interface 10 has more variability to adapt to more different application scenarios.

[0088] In this embodiment, another difference is that the shape of the adjustment knob 21 is different from the other embodiments mentioned above. The adjustment knob 21 adopts a thin design, which can more safely avoid interference with the fixing screws 221, and can reduce weight and save material usage. However, the shape of the adjustment knob 21 can also have other different equivalent designs, and is not limited to the embodiments disclosed in this invention.

[0089] Continue reading Figures 24 to 26As shown, this is the tenth embodiment of the present invention. The difference from the first embodiment is that an auxiliary threaded section 141 is formed on the outer side of the insulating member 14, and an auxiliary internal threaded hole 19 is provided on the spring pin interface base 12. The auxiliary threaded section 141 is screwed into the auxiliary internal threaded hole 19. In this way, the protrusion length of the spring pin 11 relative to the spring pin interface base 12 can be adjusted by turning the insulating member 14. With the adjustment knob 21 turned appropriately, the contact terminal 212 is ensured to abut against the telescopic needle head 112 at the upper end of the spring pin 11. Moreover, the insulating member 14 can be removed by hand from below the spring pin interface base 12 without the need to use tools to remove the fixing screw 221. In this way, the spring pin 11 can be quickly repaired and replaced, or the insulating member 14 with a different hole size can be quickly replaced to accommodate other spring pins of different thicknesses, which is very convenient.

[0090] See Figure 27 and Figure 28 As shown, this is the eleventh embodiment of the present invention. The main difference from the second embodiment is that an auxiliary threaded section 152 is formed on the outer side of the shielding sleeve 15, and the spring pin interface base 12 is provided with the auxiliary internal threaded hole 19 as disclosed in the tenth embodiment. The auxiliary threaded section 152 is screwed into the auxiliary internal threaded hole 19, and the auxiliary spring 17 is provided on the inner side of the shielding sleeve 15 to assist in forming an electrical connection between the adjusting knob 21 and the shielding sleeve 15. With this embodiment, the adjusting knob 21 can be turned to change the... The needle pressure can be adjusted by changing the compression degree of the compression spring 113. On the other hand, the protrusion length of the spring needle 11 and the shielding sleeve 15 relative to the spring needle interface base 12 can be adjusted by turning the shielding sleeve 15. This provides a very flexible adjustment capability. Moreover, the shielding sleeve 15 can be directly turned off from below without using tools to remove the fixing screws 221. Then, the spring needle 11 can be repaired or replaced, or the insulating part 14 can be replaced to accommodate spring needles of different thicknesses. This has significant convenience.

[0091] See Figure 29 and Figure 30 As shown, this is the twelfth embodiment of the present invention. The main difference from the third embodiment is that the knob fixing seat 22 and the spring pin interface base 12 are made of the same material, and the two are joined by an integral molding method. Therefore, it is not necessary to use the fixing screw 221 for locking, which can simplify the component processing and assembly process. Moreover, in this embodiment, the knob fixing seat 22 and the spring pin interface base 12 are both designed in a ring shape to meet the requirements of certain application cases. However, the shape design of the knob fixing seat 22 and the spring pin interface base 12 can be flexibly changed to meet the actual application needs and is not limited to the embodiment disclosed in the present invention.

Claims

1. A spring needle interface device with adjustable needle pressure, characterized in that... The spring needle interface base is provided with at least one spring needle, at least one end of the spring needle is provided with a retractable needle head, and the outer side of the spring needle is sleeved with an insulating piece. The needle pressure adjusting device is provided on the spring needle interface base, the needle pressure adjusting device comprises an adjusting knob and a knob fixing seat, the upper end of the adjusting knob is provided with a signal connector, the lower side of the signal connector is provided with a contact terminal in electrical connection with the signal connector, the upper end of the spring needle abuts against the contact terminal to form electrical connection, and the outer side of the lower end of the adjusting knob forms a knob threaded section, the knob fixing seat is provided with at least one positioning screw hole, the knob threaded section is screwed into the positioning screw hole, and rotation of the adjusting knob can control the adjusting knob to move up and down relative to the knob fixing seat. The outer side of the insulating piece is sleeved with a shielding sleeve, and the two ends of the shielding sleeve are respectively provided with a sleeve opening.

2. An adjustable pressure spring needle interface device as in claim 1, wherein, The knob fixing seat and the spring needle interface base are integrally formed.

3. An adjustable stylus pressure spring needle interface device as in claim 2, wherein, An auxiliary spring is arranged on the outer side of the insulating piece or arranged in the insulating piece.

4. The adjustable-stylus-force pogo-pin interface device of claim 1, wherein, An auxiliary spring is arranged on the outer side of the shielding sleeve or arranged in the shielding sleeve.

5. An adjustable stylus pressure spring needle interface device as claimed in claim 2 or 3, wherein, An auxiliary spring is arranged between the shielding sleeve and the knob fixing seat.

6. An adjustable stylus pressure spring needle interface device as claimed in claim 2 or 3, wherein, The signal connector and a signal line are connected by welding, crimping, screwing, buckling or screw locking.

7. The adjustable-stylus-force pogo-pin interface device of claim 1, wherein, A locking screw is arranged on one side of the knob fixing seat and abuts against the knob threaded section of the adjusting knob.

8. The adjustable-stylus-force pogo-pin interface device of claim 1, wherein, The knob fixing seat is locked on the top of the spring needle interface base by at least one fixing screw.

9. The adjustable-stylus-force pogo-pin interface device of claim 1, wherein, A buffer spring is arranged between the fixing screw and the knob fixing seat.

10. An adjustable stylus pressure spring needle interface device as in claim 9, wherein, The lower end of the knob fixing seat is provided with an external thread part, and the spring needle interface base is provided with an internal screw hole corresponding to the external thread part, so that the knob fixing seat is directly screwed on the top of the spring needle interface base.

11. The adjustable-stylus-force pogo-pin interface device of claim 1, wherein, The outer side of the insulating piece is provided with an auxiliary threaded section, and the spring needle interface base is provided with an auxiliary internal screw hole corresponding to the auxiliary threaded section, so that the auxiliary threaded section is screwed into the auxiliary internal screw hole.

12. The adjustable-stylus-force pogo-pin interface device of claim 1, wherein, The outer side of the shielding sleeve is provided with an auxiliary threaded section, and the spring needle interface base is provided with an auxiliary internal screw hole corresponding to the auxiliary threaded section, so that the auxiliary threaded section is screwed into the auxiliary internal screw hole.

13. An adjustable stylus pressure spring needle interface device as claimed in claim 2 or 3, wherein, The spring needle interface base is provided with at least one spring needle, at least one end of the spring needle is provided with a retractable needle head, and the outer side of the spring needle is sleeved with an insulating piece; 14. A spring needle interface device with adjustable needle pressure, characterized in that... ​ ​ At least one needle pressure adjusting device is arranged on the spring needle interface base. The needle pressure adjusting device comprises an adjusting knob and a knob fixing seat. The upper end of the adjusting knob is provided with a signal connector. A contact terminal is arranged below the signal connector and is electrically connected with the signal connector. The upper end of the spring needle is abutted against the contact terminal to form electrical connection. A tubular structure is integrally formed below the knob fixing seat. At least part of the tubular structure is arranged inside the spring needle interface base. A knob threaded section is formed outside the lower end of the adjusting knob. The knob fixing seat is provided with at least one positioning screw hole. The insulating piece can be inserted into the tubular structure through the positioning screw hole. The knob threaded section is screwed into the positioning screw hole. The adjusting knob can be controlled to move up and down relative to the knob fixing seat by screwing and rotating the adjusting knob.

15. An adjustable stylus pressure spring needle interface device as in claim 14, wherein, An auxiliary spring is arranged outside or inside the insulating piece.

16. An adjustable stylus pressure spring stylus interface device as in claim 14, wherein, The signal connector is connected with a signal line by welding, crimping, screwing, buckling or screw locking.

17. An adjustable stylus pressure spring needle interface device as in claim 14, wherein, A locking screw is arranged on one side of the knob fixing seat. The locking screw is abutted against the knob threaded section of the adjusting knob.

18. An adjustable stylus force spring needle interface device as in claim 14, wherein, The knob fixing seat is locked on the top of the spring needle interface base by at least one fixing screw.

19. An adjustable stylus pressure spring needle interface device as in claim 18, wherein, A buffer spring is arranged between the fixing screw and the knob fixing seat.

20. The adjustable-stylus-force pogo-pin interface device of claim 14, wherein, An outer threaded part is arranged at the lower end of the knob fixing seat. An inner screw hole corresponding to the outer threaded part is arranged on the spring needle interface base. The knob fixing seat is directly screwed on the top of the spring needle interface base.

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