RF Test Probes

Abstract

The utility model discloses a radio frequency test probe, including a main body and a needle body part detachably arranged on the main body; the main body includes a first shell and a second shell detachably connected to the first end of the first shell, the first shell has a first through hole penetrating along the axial direction, the second shell has a second through hole penetrating along the axial direction and connected to the first through hole; the needle body part includes a needle body inserted into the first through hole and the second through hole, and the needle body is insulated and supported in the first shell and the second shell by an insulating component. The radio frequency test probe of the utility model can be disassembled, so that each component can be replaced according to the wear condition, so that it can be replaced in a targeted manner instead of blindly, and the disassembly is simple and fast, and the cost is greatly saved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency test socket testing, in particular to a radio frequency test probe. Background Art

[0002] In recent years, with the continuous development of communication technology, wireless products have become more and more popular. The number of wireless products produced worldwide has also increased each year, and people's production and life have become more and more convenient. Wireless products (represented by mobile phones) mainly refer to communication frequencies operating in the range of 300kHz to 300GHz. Communication signals within this frequency range are also called radio frequency signals. In order to ensure the quality of radio frequency signals on the motherboard of wireless products and to meet a series of the most basic wireless communication requirements of wireless products, it is usually necessary to perform board-level radio frequency testing on the radio frequency chip on the motherboard.

[0003] The board-level RF test solution is to add an RF test socket to the mainboard of the wireless product during the design and development phase to test the RF circuit on the mainboard. During the test, the first end of the RF test probe is connected to the RF test socket on the mainboard of the wireless product, and the second end of the RF test probe is connected to the test instrument module through an RF test cable. Finally, the measurement results of the test instrument module are used to determine whether the board-level RF test of the wireless product is qualified to ensure the quality of the RF signal.

[0004] The RF test probe used for RF testing is a precision component, which is very expensive both in terms of manufacturing cost and material cost. The main body and the needle body of a traditional RF test probe are manufactured as a whole. The needle body needs to be frequently docked with the RF test socket during testing, which causes the needle body to wear out easily and causes the entire RF probe to fail. The main body, as a part that is not easily damaged, is a precision high-frequency component and is very valuable. When the main body fails along with the needle body, it means that the user needs to replace the entire RF test probe with a new one, which brings more replacement costs or production costs to the user. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a radio frequency test probe capable of replacing a worn probe.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: a radio frequency test probe is provided, including a main body part and a needle body part detachably arranged on the main body part; the main body part includes a first shell and a second shell detachably axially connected to the first end of the first shell, the first shell has a first through hole passing through along the axial direction, and the second shell has a second through hole passing through along the axial direction and connected to the first through hole; the needle body part includes a needle body inserted into the first through hole and the second through hole, and the needle body is insulated and supported in the first shell and the second shell by an insulating component.

[0007] Furthermore, the second shell is snap-connected, screw-connected or bonded to the first end of the first shell.

[0008] Furthermore, the needle body portion further includes a first elastic member for elastically extending and retracting the first end of the needle body along the axial direction, and the first end of the needle body elastically abuts against the radio frequency test socket under the elastic action of the first elastic member;

[0009] The needle body comprises a first needle body arranged in the first through hole along the axial direction and a second needle body arranged in the second through hole along the axial direction; the first needle body is provided with an insertion cavity for the second end of the second needle body to be movably inserted therein, the insertion cavity is provided with the first elastic member, the two ends of the first elastic member are respectively abutted against the cavity bottom of the insertion cavity and the second end of the second needle body, the first end of the second needle body extends out of the second shell along the axial direction, and can be elastically abutted against the RF test socket under the action of the first elastic member;

[0010] The insulating assembly includes a first insulator for insulating and isolating the first needle and the first housing, and a second insulator for insulating and isolating the second needle and the second housing.

[0011] Furthermore, the main body portion further comprises a third shell detachably arranged at the first end of the second shell and movably extending into the second shell along the axial direction, and an elastic contact shell inserted into the second shell from the second end of the second shell, wherein the third shell and the elastic contact shell respectively have a third through hole and a fourth through hole penetrating along the axial direction; the outer wall of the elastic contact shell and the inner wall of the third shell are in elastic contact with each other during the sliding cooperation along the axial direction;

[0012] The first end of the second shell is provided with a first limiting portion for limiting the third shell from being separated from the second shell in the direction of the first end, and the second end of the third shell is provided with a first limiting portion that is limitedly matched with the first limiting portion; the second shell is provided with a second limiting portion for limiting the elastic contact shell from being separated from the second shell in the direction of the second end, and the second end of the elastic contact shell is provided with a second limiting portion that is limitedly matched with the second limiting portion;

[0013] The outer circumference of the first end of the elastic contact shell is smaller than the inner circumference of the second shell so as to form an annular space with the second shell, and a second elastic member is installed in the annular space, and the two ends of the second elastic member are respectively abutted against the second ends of the elastic contact shell and the third shell; the second end of the elastic contact shell is equipped with the second insulator, and the second insulator has a second through hole coaxially arranged with the third through hole and the fourth through hole; the second needle body is movably inserted into the third through hole, the fourth through hole and the second through hole, and the second end of the second needle body extends into the plug-in cavity after passing through the second through hole to abut against the first end of the first elastic member, and the first end of the second needle body can extend out of the first end of the third shell under the elastic action of the first elastic member, and the first end of the elastic needle body is also insulated and supported in the third shell by a third insulator.

[0014] Further, the first limiting portion is defined as an oblique limiting wall that contracts from the inner wall of the first end of the second shell toward the center, and the first limiting portion is defined as an oblique limiting wall that tilts outward from the outer wall of the second end of the third shell.

[0015] Furthermore, the inner circumference of the second end of the second shell is provided with a first internal thread, the outer circumference of the first end of the first shell is provided with a first external thread threadedly matched with the first internal thread; the outer circumference of the first end of the second shell is provided with a first clamping portion;

[0016] The first end surface of the first shell forms the second limiting portion located in the second shell; the second end surface of the elastic contact shell forms a second limiting portion abutting against the first end surface of the first shell.

[0017] Furthermore, the first end shell wall of the elastic contact shell is inserted into the third through hole, and the first end shell wall of the elastic contact shell is surrounded by a plurality of second elastic partition walls, and the plurality of second elastic partition walls can expand outward in the radial direction and can contract inward in the radial direction to always maintain elastic contact with the third shell.

[0018] Furthermore, the fourth through hole has a large hole section that is closer to the first needle body and a small hole section that is closer to the third shell body, and the second insulator is assembled in the large hole section, and the second end face of the second insulator abuts against the first end face of the first needle body; the aperture of the second through hole of the second insulator is smaller than the inner diameter of the plug-in cavity, so that the second insulator has a third limiting portion that protrudes radially from the plug-in cavity, and the third limiting portion is used to limit the second needle body from detaching from the plug-in cavity toward the first end; the second end of the second needle body passes through the second through hole and is movably inserted into the plug-in cavity, and the second end of the second needle body forms a third limiting portion that is limitedly matched with the third limiting portion.

[0019] Furthermore, the needle body part also includes a fourth shell that is detachably arranged on the first end of the third shell, the fourth shell has a fifth through hole that passes through along the axial direction, the third insulator is arranged in the fifth through hole, and the third insulator has a third through hole; the first end of the second needle body is movably arranged in the third through hole and can be elastically extended out of the first end of the fourth shell under the elastic force of the first elastic member to elastically abut against the RF test socket.

[0020] Further, the outer circumferential surface of the first end of the third shell is provided with a second external thread, the inner circumferential surface of the fourth shell is provided with a second internal thread threadedly matched with the second external thread, the outer circumferential surface of the fourth shell is provided with a second clamping portion, and the first end surface of the fourth shell is an inner concave surface concave toward the second end;

[0021] The second end surface of the third insulator abuts against the first end surface of the third shell and protrudes inward from the inner wall of the third shell to limit the third insulator from separating from the fourth shell in the direction of the second end; a fourth limiting portion for limiting the third insulator from separating from the fourth shell in the direction of the first end is provided at the hole wall of the fifth through hole, and a fourth limiting portion for limiting cooperation with the fourth limiting portion is provided on the outer peripheral surface of the third insulator.

[0022] Furthermore, the first through hole comprises a large hole section, a middle hole section and a small hole section, the inner diameters of which decrease step by step from the first end to the second end; the first insulator comprises a first part installed in the middle hole section and a second part extending from the first part to the second end and installed in the small hole section, and the sizes of the first part and the second part are respectively adapted to the middle hole section and the small hole section so as to be limited in the middle hole section and the small hole section; the first insulator comprises a first through hole for the first needle body to pass through, and the inner wall of the first through hole is provided with a fifth limiting portion for preventing the first needle body from detaching from the first shell from the second end direction, and the first needle body is provided with a fifth limiting portion that cooperates with the fifth limiting portion.

[0023] The radio frequency test probe of the utility model can be disassembled so that each component can be replaced according to the wear condition, so that targeted replacement is not blind, disassembly is simple and fast, and cost is greatly saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the radio frequency test probe of the utility model. Figure 1 The RF test probe in is in a free state.

[0026] Figure 2 yes Figure 1 Longitudinal section of .

[0027] Figure 3 This is a schematic diagram of the structure of an embodiment of the radio frequency test probe of the utility model. Figure 3 The RF test probe in is in the testing state.

[0028] Figure 4 yes Figure 3 Longitudinal section of .

[0029] Figure 5 yes Figure 4 Schematic diagram of the disassembly of the first shell, the first insulator and the first needle body.

[0030] Figure 6 yes Figure 4 Schematic diagram of the disassembly of the second insulator, the elastic contact shell, the third shell, the fourth shell and the third insulator.

[0031] Figure 7 yes Figure 4 Enlarged view of the part A1 in the middle.

[0032] The accompanying drawings in the specification are numeraled as follows:

[0033] Main body part A; Needle body part B; RF test socket C;

[0034] First housing 100; first housing wall 110; first through hole 120; large hole section 121; middle hole section 122; small hole section 123; limiting step 124; first external thread 130; fixing ear 140; fixing hole 141; second limiting portion 150;

[0035] The second housing 200; the second housing wall 210; the first internal thread 211; the second through hole 220; the first locking portion 230; the first limiting portion 240;

[0036] The third housing 300; the first restricted portion 310; the second external thread 320; the third housing wall 330; the first housing segment 331; the second housing segment 332; the third housing segment 333; the third through hole 340; the restricted step 341; the large hole segment 342; the small hole segment 343; the annular stop 350;

[0037] Elastic contact housing 400; elastic contact housing wall 410; fourth housing segment 411; second restricted portion 411a; fifth housing segment 412; second separation gap 412a; second elastic partition wall 412b; annular space 413; fourth through hole 420; large hole segment 421; small hole segment 422;

[0038] A first elastic member 510; a second elastic member 520;

[0039] The first needle body 610; the fifth restricted portion 611; the first section 612; the limiting section 613; the second section 614; the plug-in cavity 615; the first separation gap 615a; the first elastic partition wall 615b; the second needle body 620; the third restricted portion 621;

[0040] First insulator 710; first portion 711; second portion 712; restricted step 713; first through hole 714; fifth limiting portion 714a; large hole section 714b; small hole section 714c; second insulator 720; second through hole 721; third limiting portion 722; third insulator 730; third through hole 731; third portion 732; fourth portion 733;

[0041] Fourth housing 800 ; fourth housing wall 810 ; fifth through hole 820 ; large hole section 821 ; middle hole section 822 ; small hole section 823 ; first stop step 824 ; second stop step 825 ; second locking portion 830 ; second internal thread 840 ; inner concave surface 850 . DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0045] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 and Figure 2 The structure of a preferred embodiment of the radio frequency test probe of the utility model in a free state (a state in which the needle body part is not compressed in a non-working state) is shown. Figure 3 and Figure 4 The structure of a preferred embodiment of the radio frequency test probe of the utility model in the test state is shown. Figures 1 to 4 A specific embodiment shown is explained in detail. It should be noted that although the RF test probe structure of this specific embodiment will be described in detail as an example below, this specific embodiment is not used to limit the scope of the test probe structure of the present invention. Except for the components that solve the necessary technical problems of the present invention, the remaining components can be regarded as non-essential technical elements. These non-essential technical elements can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or these non-essential technical elements may not be needed in other embodiments.

[0046] The radio frequency test probe includes a main body A and a needle body B detachably disposed on the main body A. The main body A can be defined as a shell part that is not easily damaged by frequent testing, for example, Figures 1 to 4 The illustrated embodiment includes a first shell 100, a second shell 200, a third shell 300, an elastic contact shell 400, and a second elastic member 520. For example, in other embodiments, the main body portion A only has a first shell 100 and a second shell 200 detachably arranged with the first shell 100. After the first shell 100 and the second shell 200 are disassembled, the damaged needle body portion B can be taken out and replaced with a new needle body portion B. The first shell 100 and the second shell 200 can be detachably connected together by screwing, bonding, or snapping. In one embodiment, the first shell 100 can be made of stainless steel, the second shell 200 and the third shell 300 can be made of brass, and the fourth shell can be made of beryllium copper. The needle body portion B can be defined as a portion that is easily damaged due to frequent testing, for example, in Figures 1 to 4The needle body (first needle body 610 and / or second needle body 620), insulating assembly (first insulator 710, second insulator 720 and / or third insulator 730), first elastic member 510 (the first elastic member 510 is classified as a vulnerable part due to its small wire diameter), fourth shell 800, etc. in the illustrated embodiment. In different embodiments, the insulating assembly can be divided into a needle body part B or a main body part A according to its damage. When the insulating assembly is similar to the needle body and both are severely damaged, the insulating assembly is regarded as a part of the needle body part B and is replaced together. When the insulating assembly is slightly damaged and does not need to be replaced with a new insulating assembly, the insulating assembly can be regarded as the main body part A and retained, and replaced when it is needed. Therefore, the insulating assembly can be detachably installed in the main body part A. In summary, the main body part A can be regarded as a part that is not easily damaged, and the needle body part B can be regarded as a part that is easily damaged.

[0047] In order to describe the present solution more clearly and concisely, the end of the RF test probe that is conductively connected to the RF test socket C during testing is referred to as the first end, and the end connected to the RF tester (not shown in the figure) (the end away from the first end along the axial direction of the RF test probe) is referred to as the second end. In this way, there are the first end and the second end of the first shell 100, the first end and the second end of the second shell 200, the first end and the second end of the third shell 300, the first end and the second end of the fourth shell 800, the first end and the second end of the elastic contact shell 400, the first end and the second end of each insulator, the first end and the second end of each elastic member, the first end and the second end of the first needle body 610, and the first end and the second end of the second needle body 620. The first end of each of the above components refers to the end facing the RF test socket C, and the second end refers to the end away from the first end along the axial direction.

[0048] exist Figures 1 to 4 In the illustrated embodiment, the main body portion A includes the above-mentioned first shell 100, a second shell 200 detachably disposed at the first end of the first shell 100, a third shell 300 disposed at the first end of the second shell 200 and capable of moving into the second shell 200 in the direction of the second end, an elastic contact shell 400 disposed in the second shell 200 and located at the second end side of the third shell 300, and a second elastic member 520 disposed between the elastic contact shell 400 and the third shell 300 along the axial direction. The second end of the elastic contact shell 400 is unidirectionally limited in the second shell 200 to prevent it from being separated from the second shell 200 in the direction of the second end. The second end of the third shell 300 is unidirectionally limited at the first end of the second shell 200 to prevent it from being separated from the second shell 200 in the direction of the first end.

[0049] The needle body part B includes a first insulator 710 arranged in the first shell 100, a first needle body 610 arranged in the first shell 100, a fourth shell 800 detachably connected to the first end of the third shell 300, a second insulator 720 coaxially arranged on the elastic contact shell 400, a third insulator 730 coaxially arranged on the fourth shell 800, and a second needle body 620 movably inserted into the elastic contact shell 400, the third shell 300 and the fourth shell 800. The first end of the second needle body 620 is insulated and isolated from the fourth shell 800 by the third insulator 730, and the second end of the second needle body 620 is insulated and isolated from the elastic contact shell 400 by the second insulator 720. A gap is formed between the second needle body 620 and the inner walls of the elastic contact shell 400, the third shell 300 and the fourth shell 800 (that is, the outer diameter of the second needle body 620 is smaller than the aperture of the through hole of the elastic contact shell 400, the third shell 300 and the fourth shell 800 respectively), so that the second needle body 620 can be insulated and isolated from the second shell 200, the third shell 300, the fourth shell 800 and the insulating elastic shell only through the second insulator 720 and the third insulator 730. The second end of the first needle body 610 is inserted into the first insulator 710 to achieve insulation isolation from the first housing 100, and the second end of the first needle body 610 is connected to the RF tester after passing through the first housing 100; the first end of the first needle body 610 is elastically connected to the second end of the second needle body 620 through the first elastic member 510. The second end of the second needle body 620 passes through the second insulator 720, and the second end of the second needle body 620 extends out of the second end of the elastic contact housing 400 and is elastically connected to the first end of the first needle body 610. The first end of the second needle body 620 can extend out of the fourth housing 800 under the elastic force of the first elastic member 510 to elastically abut against the RF test socket C.

[0050] In other embodiments, the design of the needle body part B can also be adapted to other needs. For example, in an embodiment with only the first shell 100 and the second shell 200, the arrangement of the needle body part B may include a first needle body 610, a second needle body 620, a first elastic member 510 disposed between the first needle body 610 and the second needle body 620, and an insulating component that insulates and supports the first needle body 610 and the second needle body 620 in the first shell 100 and the second shell 200 (for example, a first insulator 710 that insulates and supports the first needle body 610 in the first shell 100 and a second needle body 620 that insulates and supports the second needle body 620 in the second shell 200). The second needle body 620 can retract into the second shell 200 and extend out of the second shell 200 under the elastic action of the first elastic member 510 to achieve elastic contact with the RF test socket C. For example, in an embodiment in which the main body part A includes a first shell 100, a second shell 200, a third shell 300, an elastic contact shell 400 and a second elastic member 520, the needle body part B can be designed to include a first needle body 610, a second needle body 620, a first elastic member 510, a first insulator 710, a second insulator 720 and a third insulator 730. The assembly method of the third shell 300, the elastic contact shell 400 and the second elastic member 520 is as described above. The first needle body 610 is insulated and supported in the first shell 100 by the first insulator 710, and the second needle body 620 is inserted into the elastic contact shell 400 and the third shell 300. The second end of the second needle body 620 is insulated and supported in the elastic contact shell 400 by the second insulator 720 arranged at the second end of the elastic contact shell 400, and the second end of the second needle body 620 is elastically connected to the first needle body 610 through the first elastic member 510; the first end of the second needle body 620 is insulated and supported in the third insulator 730 by the third insulator 730 arranged at the first end of the third shell 300, and can pass through the first end of the third shell 300 under the action of the first elastic member 510 to elastically abut against the RF test socket C.

[0051] See also Figure 5, the first shell 100 is screwed together with the second shell 200. The first shell 100 includes a first shell wall 110, a first through hole 120 penetrating the first shell wall 110 along the axial direction, a fixing ear 140 disposed on the outer periphery of the first shell wall 110, and a first external thread 130 disposed on the outer peripheral surface of the first end of the first shell wall 110. Both ends of the fixing ear 140 are provided with fixing holes 141 for fixing the first shell 100 on the RF test fixture. The fixing ear 140 divides the first shell wall 110 into a first end shell wall 111 facing the RF test seat C and a second end shell wall 112 facing the RF tester along the axial direction. The first external thread 130 is distributed on the outer periphery of the first end shell wall 111. The first through hole 120 comprises a large hole section 121, a middle hole section 122 and a small hole section 123, the inner diameters of which decrease step by step from the first end to the second end, wherein the large hole section 121 is distributed along the axis in the first end shell wall 111, the middle hole section 122 is coaxially distributed in the fixing ear 140, one end of the small hole section 123 is connected to the middle hole section 122, and the other end passes through the second end shell wall 112 toward the second end, and the step between the small hole section 123 and the middle hole section 122 forms a limiting step 124.

[0052] The first insulator 710 is installed in the first housing 100. Specifically, the first insulator 710 has a first portion 711 installed in the middle hole section 122 of the first through hole 120 and a second portion 712 extending from the first portion 711 toward the second end and installed in the small hole section 123 of the first through hole 120. The sizes of the first portion 711 and the second portion 712 are respectively adapted to the middle hole section 122 and the small hole section 123 of the first through hole 120 so as to be limited in the middle hole section 122 and the small hole section 123 of the first through hole 120. Among them, the first part 711 extends into the large hole section 121 of the first through hole 120 in the first direction (which can effectively prevent the first needle body 610 from contacting the first shell 100), and a limiting step 713 that cooperates with the limiting step 124 is formed between the first part 711 and the second part 712. When the first insulator 710 is installed in the middle hole section 122 and the small hole section 123 of the first through hole 120, the restricted step 713 abuts against the limiting step 124 to prevent the first insulator 710 from separating from the first shell 100 in the direction of the second end. The first insulator 710 also has a first through hole 714 for the first needle 610 to pass through, the first through hole 714 penetrates the first insulator 710 along the axial direction, and the hole wall of the first through hole 714 is provided with a fifth limiting portion 714a for preventing the first needle 610 from being separated from the first housing 100 from the second end direction, and the first needle 610 is provided with a fifth limiting portion 611 that is limitedly matched with the fifth limiting portion 714a. Specifically, the first through hole 714 has a large hole section 714b closer to the first end direction and a small hole section 714c closer to the second end direction, and the fifth limiting portion 714a is defined as a limiting step formed between the large hole section 714b and the small hole section 714c of the first through hole 714.

[0053] The first needle body 610 is arranged in the first through hole 120 of the first shell 100 along the axial direction, and the second end of the first needle body 610 passes through the first insulator 710 and is electrically connected to the RF tester through a wire. The first end face of the first needle body 610 is almost flush with the first end face of the first shell 100, but is still located in the large hole section 121 of the first through hole 120. Specifically, the first needle body 610 includes a first section 612 extending into the large hole section 121 of the first through hole 120 along the axial direction, a limiting section 613 extending from the first section 612 to the second end direction and limited in the large hole section 714b of the first through hole 714, and a second section 614 extending from the limiting section 613 to the second end direction to pass through the small hole section 714c of the first through hole 714 and then electrically connected to the RF tester. The outer diameters of the first section 612, the limiting section 613 and the second section 614 gradually decrease from the first end to the second end, and the outer diameter of the first section 612 is larger than the diameter of the large hole section 714b of the first through hole 714, so as to be limited in the first end shell wall 111 by the first end surface of the first insulator 710. The outer diameter of the limiting section 613 is matched with the large hole section 714b of the first through hole 714, and the outer diameter of the second section 614 is matched with the small hole section 714c of the first through hole 714. The step portion between the limiting section 613 and the second section 614 is defined as the fifth limiting portion 611, and the fifth limiting portion 611 cooperates with the fifth limiting portion 714a to further prevent the first needle body 610 from escaping from the first shell 100 toward the second end.

[0054] The first end of the first needle body 610 is provided with an insertion cavity 615 for the second end of the second needle body 620 to be movably inserted therein. The insertion cavity 615 is distributed in the first section 612 of the first needle body 610 along the axial direction and penetrates the first section 612 toward the first end. Preferably, the cavity wall of the insertion cavity 615 is divided into a plurality of first elastic partition walls 615b by a plurality of first partition slits 615a distributed along the axial direction, and the first ends of the plurality of first elastic partition walls 615b can expand outwardly and contract inwardly to reset in the radial direction. The outer diameter of the second end of the second needle body 620 is slightly larger than the inner diameter of the insertion cavity. When the second needle body 620 moves toward the second end, it simultaneously presses outward each first elastic partition wall 615b of the insertion cavity 615, so that each first elastic partition wall 615b expands outward, thereby forming an open shape of the insertion cavity 615; when the second needle body 620 returns to the first end, each first elastic partition wall 615b of the insertion cavity 615 shrinks inward, so that the insertion cavity 615 returns to its original shape. The insertion cavity 615 is provided with the first elastic member 510 (the first elastic member 510 can be defined as a coil spring), and the two ends of the first elastic member 510 are respectively abutted against the cavity bottom of the insertion cavity 615 and the second end of the second needle body 620, and the first end of the second needle body 620 extends out of the second housing 200 along the axial direction, and can be elastically abutted against the RF test socket C under the action of the first elastic member 510.

[0055] The second housing 200 is a cylindrical structure as a whole, and includes a second housing wall 210 and a second through hole 220 that penetrates along the axial direction. The second end inner wall of the second housing wall 210 is provided with a first internal thread 211 that is screwed with the first external thread 130, and the first end outer surface of the second housing 200 is provided with a first locking portion 230, which is defined as a plurality of planes distributed on the outer surface of the second housing 200, and is used to facilitate the locking of a disassembly tool (such as a wrench) when disassembling the second housing 200. When the second housing 200 is screwed to the outer surface of the first housing 100, the first end of the first housing 100 extends into the second through hole 220 of the second housing 200, and the first end surface of the first housing 100 forms a second limiting portion 150 that limits the elastic contact housing 400 in one direction, and is used to limit the elastic contact housing 400 from being separated from the second housing 200 in the direction of the second end. It should be understood that the specific form of the second limiting portion 150 is not limited to the first end surface of the first shell 100 mentioned above. In other embodiments, the second limiting portion 150 may also be limited to a structure such as a limiting block arranged on the inner wall of the second shell 200.

[0056] The first end of the second housing 200 is provided with a first limiting portion 240 for limiting the third housing 300 from being separated from the second housing 200 in the direction of the first end. The first limiting portion 240 may be a plurality of limiting blocks protruding inwardly from the hole wall of the second through hole 220 in the radial direction, and the plurality of limiting blocks are evenly spaced and distributed on the hole wall of the second through hole 220 in the circumferential direction of the second through hole 220. In the illustrated embodiment, the first limiting portion 240 is defined as an oblique limiting wall that shrinks from the inner wall of the first end of the second housing 200 toward the center, and the oblique limiting wall encloses a shrinking structure with an opening gradually decreasing toward the first end, which is used to prevent the third housing 300 from being separated from the second housing 200 in the direction of the first end.

[0057] The second end of the third housing 300 is movably disposed in the second housing 200, and the first end movably extends out of the first end of the second housing 200. The second end of the third housing 300 is provided with a first limiting portion 310 (oblique limiting wall) that matches the first limiting portion 240 (oblique limiting wall) for limiting the third housing 300 in the direction of the first end in cooperation with the first limiting portion 240. The second external thread 320 is distributed on the outer periphery of the first end of the third housing 300, and the second external thread 320 is used for the second end of the fourth housing 800 to be screwed thereon.

[0058] See also Figure 4 and Figure 6 The third housing 300 includes a third housing wall 330 and a third through hole 340 penetrating the third housing wall 330 along the axial direction. The third housing wall 330 includes a first housing segment 331, a second housing segment 332 and a third housing segment 333, the outer diameter of which decreases gradually from the second end to the first end. The outer diameter of the first housing segment 331 is adapted to the aperture of the second through hole 220 so that it can move in the second through hole 220, the outer diameter of the second housing segment 332 is adapted to the minimum aperture of the shrinking structure so that it can move out of the first end of the second housing 200, and an oblique limiting wall (first limiting portion 310) adapted to the oblique limiting wall is formed between the second housing segment 332 and the first housing segment 331, so that it can gradually limit and cooperate with the oblique limiting wall during the outward movement of the second housing segment 332, thereby preventing the first housing segment 331 from moving out of the second housing 200. The third shell segment 333 can be defined as being always outside the second shell 200. Of course, the third shell segment 333 can also be defined as partially extending into the second shell 200 when the third shell 300 extends into the second shell 200 toward the second end. The first end of the third shell segment 333 is provided with the second external thread 320.

[0059] The hole wall of the third through hole 340 is provided with a limiting step 341. The limiting step 341 of the third through hole 340 is used to stop at the first end surface of the elastic contact shell 400 when the third shell 300 moves toward the second end direction, so as to prevent the third shell 300 from continuing to move toward the second end direction. Specifically, the third through hole 340 is defined as having a large hole section 342 and a small hole section 343 whose hole diameter gradually decreases from the second end direction to the first end direction. The step portion between the large hole section 342 and the small hole section 343 of the third through hole 340 forms the limiting step 341. The elastic contact shell 400 movably extends into the large hole section 342 of the third through hole 340 and is limited by the limiting step 341.

[0060] The first end of the elastic contact housing 400 has radial elasticity, so that the outer wall of the elastic contact housing 400 and the inner wall of the third housing 300 can maintain elastic contact during the sliding fit along the axial direction. The second end of the elastic contact housing 400 is provided with a second limiting portion 411a that is limitedly matched with the second limiting portion 150.

[0061] In the illustrated embodiment, the elastic contact shell 400 includes an elastic contact shell wall 410 and a fourth through hole 420 arranged in the elastic contact shell wall 410 along the axial direction. The elastic contact shell wall 410 has a fourth shell segment 411 (the second end of the elastic contact shell 400) and a fifth shell segment 412 (the first end of the elastic contact shell 400) whose outer diameters gradually decrease from the second end to the first end. The outer diameter (outer circumference) of the fourth shell segment 411 is matched with the inner diameter of the second through hole 220, so that the second end face of the fourth shell segment 411 forms the second restricted portion 411a that abuts against the first end face of the first shell 100. The outer circumference of the fifth shell segment 412 is smaller than the inner circumference of the second shell 200, so as to form an annular space 413 (see Figure 4 ), a second elastic member 520 (the second elastic member 520 may be defined as a coil spring) is installed in the annular space 413, and the two ends of the second elastic member 520 are respectively in contact with the fourth shell segment 411 of the elastic contact housing 400 and the second end of the third housing 300. The shell wall of the fifth shell segment 412 (i.e., the first end shell wall 111 of the elastic contact housing 400) is inserted into the third through hole 340, and the shell wall of the fifth shell segment 412 is divided into a plurality of second elastic partition walls 412b by a plurality of second partition slits 412a distributed along the axial direction, and the plurality of second elastic partition walls 412b can expand outwardly in the radial direction and can contract inwardly in the radial direction, so as to always maintain elastic contact with the third housing 300.

[0062] See also Figure 7 The second end of the elastic contact housing 400 is equipped with the second insulator 720, and the second insulator 720 has a second through hole 721 coaxially arranged with the third through hole 340 and the fourth through hole 420. Specifically, the fourth through hole 420 has a large hole section 421 closer to the first needle body 610 and a small hole section 422 closer to the third housing 300. The second insulator 720 is installed in the large hole section 421 of the fourth through hole 420, and the second end surface of the second insulator 720 abuts against the first end surface of the first needle body 610. The aperture of the second through hole 721 of the second insulator 720 is smaller than the inner diameter of the plug-in cavity 615, so that the second insulator 720 has a third limiting portion 722 radially protruding from the plug-in cavity 615, the second end of the second needle body 620 is inserted into the plug-in cavity 615, and is provided with a third limiting portion 621 that cooperates with the third limiting portion 722. The third limiting portion 621 is defined as a limiting convex ring arranged around the outer periphery of the first end of the second needle body 620, and the first end face of the limiting convex ring abuts against the third limiting portion 722 to limit the second needle body 620 from disengaging from the plug-in cavity 615 toward the first end.

[0063] Please continue to see Figure 6 The fourth shell 800 includes a fourth shell wall 810 and a fifth through hole 820 that is arranged in the fourth shell wall 810 along the axial direction. The outer peripheral surface of the fourth shell wall 810 is provided with a second locking portion 830, and the second locking portion 830 is defined as a plurality of planes distributed on the outer peripheral surface of the fourth shell wall 810, which is used to facilitate the locking of disassembly tools (such as wrenches) when disassembling the fourth shell 800. The inner wall surface of the second end of the fourth shell wall 810 is provided with a second internal thread 840 that is screwed with the second external thread 320, and the first end surface of the fourth shell wall 810 is an inner concave surface 850 that is recessed toward the second end, and the inner concave surface 850 is used to match the pressure surface of the RF test socket C.

[0064] The third insulator 730 is arranged in the fifth through hole 820, and the third insulator 730 has a third through hole 731 that penetrates along the axial direction. Specifically, the fifth through hole 820 is defined as a large hole section 821, a middle hole section 822, and a small hole section 823, the apertures of which gradually decrease from the second end to the first end. The aperture of the large hole section 821 of the fifth through hole 820 is adapted to the outer diameter of the first end of the third shell 300, and the hole wall of the large hole section 821 of the fifth through hole 820 is distributed with the second internal thread 840, and a first stop step 824 is formed between the large hole section 821 and the middle hole section 822 of the fifth through hole 820, and the first stop step 824 is used to stop the first end surface of the third shell 300. The diameter of the middle hole section 822 of the fifth through hole 820 is larger than the diameter of the small hole section 343 of the third shell 300, so that the inner wall of the first end of the third shell 300 protrudes inwardly from the middle hole section 822 of the fifth through hole 820, and the portion protruding from the middle hole section 822 forms an annular stop platform 350 (see Figure 2 ), the annular stop platform 350 is used to stop the second end surface of the third insulator 730 assembled in the fifth through hole 820 (that is, the part of the first end surface of the third housing 300 protruding from the middle hole section 822 abuts against the second end surface of the third insulator 730). A second stop step 825 is formed between the middle hole section 822 and the small hole section 823 of the fifth through hole 820, and the second stop step 825 forms a fourth limiting portion for limiting the third insulator 730 from escaping from the fourth housing 800 in the first end direction. The third insulator 730 has a third part 732 adapted to the middle hole section 822 of the fifth through hole 820 and a fourth part 733 adapted to the small hole section 823 of the fifth through hole 820, the fourth part 733 is assembled in the small hole section 823 of the fifth through hole 820, the third part 732 is assembled in the middle hole section 822 of the fifth through hole 820 and its second end face abuts against the first end face of the third shell 300, and the first end face (fourth limiting portion) abuts against the fourth limiting portion, the inner wall surface of the third part 732 is convex inwardly of the inner wall of the third shell 300, so that the second needle body 620 penetrated therein is effectively insulated and isolated from the third shell 300.

[0065] The second needle body 620 is inserted into the fourth through hole 420 of the elastic contact housing 400, the third through hole 340 of the third housing 300, and the fifth through hole 820 of the fourth housing 800. The first end of the second needle body 620 can be movably passed through the third through hole 731 of the third insulator 730 and exposed outside the first end of the fourth housing 800, the second end of the second needle body 620 is movably inserted into the second through hole 721 of the second insulator 720, and the second end of the second needle body 620 is limited in the insertion cavity 615 of the first needle body 610 by the second end surface of the second insulator 720, and the first elastic member 510 in the insertion cavity 615 elastically pushes the second needle body 620 out of the fourth housing 800 through its own elastic force. With such a design, the first end and the second end of the second needle body 620 can be directly insulated from the elastic contact housing 400 and the fourth housing 800 respectively under the support of the third insulator 730 and the second insulator 720, and can be indirectly insulated from the third housing 300 and the second housing 200. The second needle body 620 is directly inserted into the second through hole 721, the third through hole 731, the third through hole 340 and the fourth through hole 420. Since the third through hole 731 is located in the fifth through hole 820, and the second through hole 721, the third through hole 340 and the fourth through hole 420 are located in the second through hole 220, the second needle body 620 is also indirectly inserted into the fifth through hole 820 and the second through hole 220.

[0066] The installation process of the C probe of the RF test socket of the utility model is as follows:

[0067] Installing the first insulator 710: installing the first insulator 710 in the first shell 100, wherein the first insulator 710 is installed in the first shell 100 from the first end to the second end, so that the second part 712 of the first insulator 710 is installed in the small hole section 123 of the first through hole 120, and the first part 711 of the first insulator 710 is installed in the middle hole section 122 of the first through hole 120, and the restricted step 341713 between the first part 711 and the second part 712 is abutted against the limiting step 124 between the middle hole section 122 and the small hole section 123 of the first through hole 120, so as to prevent the first insulator 710 from escaping from the first shell 100 in the direction of the second end, and realize the one-way limiting of the first insulator 710; the first end of the first insulator 710 installed in the first through hole 120 extends into the large hole section 121 of the first through hole 120, thereby completely preventing the first needle 610 from contacting the first shell 100;

[0068] Install the first needle body 610: install the first needle body 610 in the first shell 100, wherein the first needle body 610 is installed in the first shell 100 from the first end to the second end, so that the first section 612 of the first needle body 610 is located in the large hole section 121 of the first shell 100, the limiting section 613 of the first needle body 610 is located in the large hole section 714b of the first through hole 714 of the first insulator 710, and the second section 614 of the first needle body 610 is located in the small hole section 714c of the first through hole 714, and the limiting step formed between the large hole section 714b and the small hole section 714c of the first through hole 714 abuts against the step portion between the limiting section 613 and the second section 614, so as to prevent the first needle body 610 from detaching from the first insulator 710 toward the second end, thereby realizing the one-way limiting of the first needle body 610;

[0069] The first elastic member 510 is installed in the insertion cavity 615 of the first section 612 of the first needle body 610; the elastic contact housing 400, the second elastic member 520 and the third housing 300 are assembled: the second elastic member 520 is placed at the second end of the third housing 300, and the first end of the elastic contact housing 400 equipped with the second insulator 720 is inserted into the large hole section 342 of the third through hole 340 of the third housing 300 after passing through the second elastic member 520;

[0070] Insert the second needle 620: make the second needle 620 pass through the second through hole 721 of the second insulator 720, the fourth through hole 420 of the elastic contact housing 400 and the third through hole 731 of the third housing 300 in sequence from the second end to the first end, and insert the second end of the second needle 620 into the plug-in cavity 615;

[0071] Insert the second housing 200: the second housing 200 is looped around the assembled elastic contact housing 400, the second elastic member 520 and the third housing 300 from the first end to the second end, so that the first end of the third housing 300 extends out of the first end of the second housing 200;

[0072] Assemble the first shell 100 and the second shell 200: screw the first internal thread 211 of the second shell 200 into the first external thread 130, so that the second shell 200 is screwed to the outside of the first shell 100. At this time, the first end surface of the first shell 100 abuts against the second end surface of the elastic contact shell 400 as the second limiting portion 150 to prevent the elastic contact shell 400 from shifting toward the second end direction; the first end surface of the elastic contact shell 400 serves as a limit in the first end direction of the third shell 300, and the limited step 341 of the third shell 300 abuts against the first end surface of the elastic contact shell 400, which can prevent the third shell 300 from continuing to shift toward the second end direction (limiting the movement stroke of the third shell 300);

[0073] Installing the third insulator 730: installing the third insulator 730 in the fifth through hole 820 of the fourth housing 800, wherein the third insulator 730 is installed in the fifth through hole 820 from the second end to the first end, so that the third part 732 of the third insulator 730 is installed in the middle hole section 822 of the fifth through hole 820, and the fourth part 733 of the third insulator 730 is installed in the small hole section 823 of the fifth through hole 820; and the fourth limiting part formed between the third part 732 and the fourth part 733 abuts against the fourth limiting part formed between the middle hole section 822 and the small hole section 823 of the fifth through hole 820, so as to prevent the third insulator 730 from being separated from the fourth housing 800 in the direction of the first end;

[0074] Install the fourth shell 800: screw the second internal thread 840 of the second end of the fourth shell 800 into the second external thread 320, so that the fourth shell 800 is screwed to the second end of the third shell 300; at this time, the second end face of the third shell 300 abuts against the first stop step 824 formed between the large hole section 821 and the middle hole section 822 of the fifth through hole 820, and the first end face of the third shell 300 protrudes inwardly from the middle hole section 822 of the fifth through hole 820, and the inwardly protruding part is used to press against the second end face of the third insulator 730 to prevent the third insulator 730 from shifting toward the second end direction, so that the third insulator 730 is not shifted due to the frequent extension and contraction of the second needle body 620.

[0075] The disassembly process of the C probe of the radio frequency test socket of the utility model is as follows:

[0076] Disassembling the fourth housing 800: reversely twisting the fourth housing 800 to separate it from the third housing 300;

[0077] Disassembling the second housing 200: reversely twisting the second housing 200 to separate it from the first housing 100. When the second housing 200 is separated from the first housing 100, the second needle 620 can be extended from the insertion cavity 615 to be separated from the first needle 610;

[0078] Disassembling the second needle body 620: pulling out the second needle body 620 from the first end toward the second end, and replacing it with a new second needle body 620 as needed;

[0079] Disassembling the first needle body 610: pulling the first needle body 610 out from the second end toward the first end;

[0080] The first insulator 710, the second insulator 720, and the third insulator 730 are replaced as appropriate.

[0081] The radio frequency test probe can be disassembled through the above steps, so that each component can be replaced according to the wear condition, which is targeted rather than blindly replaced. The disassembly is simple and fast, and the cost is greatly saved.

[0082] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A radio frequency test probe, characterized in that: It includes a main body part and a needle body part detachably arranged on the main body part; the main body part includes a first shell and a second shell detachably axially connected to the first end of the first shell, the first shell has a first through hole penetrating along the axial direction, and the second shell has a second through hole penetrating along the axial direction and connected to the first through hole; the needle body part includes a needle body inserted into the first through hole and the second through hole, and the needle body is insulated and supported in the first shell and the second shell by an insulating component.

2. The radio frequency test probe according to claim 1, characterized in that: The second shell is snap-connected, screw-connected or bonded to the first end of the first shell.

3. The radio frequency test probe according to claim 1, wherein: The needle body part also includes a first elastic member for elastically extending and retracting the first end of the needle body along the axial direction, and the first end of the needle body elastically abuts against the radio frequency test socket under the elastic action of the first elastic member; The needle body comprises a first needle body arranged in the first through hole along the axial direction and a second needle body arranged in the second through hole along the axial direction; the first needle body is provided with an insertion cavity for the second end of the second needle body to be movably inserted therein, the insertion cavity is provided with the first elastic member, the two ends of the first elastic member are respectively abutted against the cavity bottom of the insertion cavity and the second end of the second needle body, the first end of the second needle body extends out of the second shell along the axial direction, and can be elastically abutted against the RF test socket under the action of the first elastic member; The insulating assembly includes a first insulator for insulating and isolating the first needle and the first housing, and a second insulator for insulating and isolating the second needle and the second housing.

4. The radio frequency test probe according to claim 3, characterized in that: The main body also includes a third shell detachably arranged at the first end of the second shell and movably extending into the second shell along the axial direction, and an elastic contact shell inserted into the second shell from the second end of the second shell, wherein the third shell and the elastic contact shell respectively have a third through hole and a fourth through hole penetrating along the axial direction; the outer wall of the elastic contact shell and the inner wall of the third shell are in elastic contact with each other during the sliding cooperation along the axial direction; The first end of the second shell is provided with a first limiting portion for limiting the third shell from being separated from the second shell in the direction of the first end, and the second end of the third shell is provided with a first limiting portion that is limitedly matched with the first limiting portion; the second shell is provided with a second limiting portion for limiting the elastic contact shell from being separated from the second shell in the direction of the second end, and the second end of the elastic contact shell is provided with a second limiting portion that is limitedly matched with the second limiting portion; The outer circumference of the first end of the elastic contact shell is smaller than the inner circumference of the second shell so as to form an annular space with the second shell, and a second elastic member is installed in the annular space, and the two ends of the second elastic member are respectively abutted against the second ends of the elastic contact shell and the third shell; the second end of the elastic contact shell is equipped with the second insulator, and the second insulator has a second through hole coaxially arranged with the third through hole and the fourth through hole; the second needle body is movably inserted into the third through hole, the fourth through hole and the second through hole, and the second end of the second needle body extends into the plug-in cavity after passing through the second through hole to abut against the first end of the first elastic member, and the first end of the second needle body can extend out of the first end of the third shell under the elastic action of the first elastic member, and the first end of the elastic needle body is also insulated and supported in the third shell by a third insulator.

5. The radio frequency test probe according to claim 4, characterized in that: The first limiting portion is defined as an oblique limiting wall that contracts from the inner wall of the first end of the second shell toward the center, and the first limiting portion is defined as an oblique limiting wall that tilts outward from the outer wall of the second end of the third shell.

6. The radio frequency test probe according to claim 4, characterized in that: The inner circumference of the second end of the second shell is provided with a first internal thread, and the outer circumference of the first end of the first shell is provided with a first external thread threadedly matched with the first internal thread; the outer circumference of the first end of the second shell is provided with a first clamping portion; The first end surface of the first shell forms the second limiting portion located in the second shell; the second end surface of the elastic contact shell forms a second limiting portion abutting against the first end surface of the first shell.

7. The radio frequency test probe according to claim 4, characterized in that: The first end shell wall of the elastic contact shell is inserted into the third through hole, and the first end shell wall of the elastic contact shell is surrounded by a plurality of second elastic partition walls, and the plurality of second elastic partition walls can expand outward in the radial direction and can contract inward in the radial direction to always maintain elastic contact with the third shell.

8. The radio frequency test probe according to claim 4, characterized in that: The fourth through hole has a large hole section that is closer to the first needle body and a small hole section that is closer to the third shell body. The second insulator is assembled in the large hole section, and the second end face of the second insulator abuts against the first end face of the first needle body; the aperture of the second through hole of the second insulator is smaller than the inner diameter of the plug-in cavity, so that the second insulator has a third limiting portion that protrudes radially from the plug-in cavity, and the third limiting portion is used to limit the second needle body from escaping from the plug-in cavity toward the first end; the second end of the second needle body passes through the second through hole and is movably inserted into the plug-in cavity, and the second end of the second needle body forms a third limiting portion that is limitedly matched with the third limiting portion.

9. The radio frequency test probe according to claim 4, characterized in that: The needle body part also includes a fourth shell that is detachably arranged on the first end of the third shell, the fourth shell has a fifth through hole that passes through along the axial direction, the third insulator is arranged in the fifth through hole, and the third insulator has a third through hole; the first end of the second needle body is movably arranged in the third through hole and can be elastically extended out of the first end of the fourth shell under the elastic force of the first elastic member to elastically abut against the radio frequency test socket.

10. The radio frequency test probe according to claim 9, characterized in that: The outer circumferential surface of the first end of the third housing is provided with a second external thread, the inner circumferential surface of the fourth housing is provided with a second internal thread threadedly matched with the second external thread, the outer circumferential surface of the fourth housing is provided with a second clamping portion, and the first end surface of the fourth housing is an inner concave surface that is concave toward the second end; The second end surface of the third insulator abuts against the first end surface of the third shell and protrudes inward from the inner wall of the third shell to limit the third insulator from separating from the fourth shell in the direction of the second end; a fourth limiting portion for limiting the third insulator from separating from the fourth shell in the direction of the first end is provided at the hole wall of the fifth through hole, and a fourth limiting portion for limiting cooperation with the fourth limiting portion is provided on the outer peripheral surface of the third insulator.

11. The radio frequency test probe according to any one of claims 3 to 10, characterized in that: The first through hole comprises a large hole section, a middle hole section and a small hole section, the inner diameters of which decrease gradually from the first end to the second end; the first insulator comprises a first part installed in the middle hole section and a second part extending from the first part to the second end and installed in the small hole section, the sizes of the first part and the second part are respectively adapted to the middle hole section and the small hole section so as to be limited in the middle hole section and the small hole section; the first insulator comprises a first through hole for the first needle body to pass through, the inner wall of the first through hole is provided with a fifth limiting portion for preventing the first needle body from detaching from the first shell from the second end direction, and the first needle body is provided with a fifth limiting portion that cooperates with the fifth limiting portion.

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