Test connector

Abstract

The utility model provides a test connector, comprising an outer conductor extending in an axial direction and having a cylindrical structure, a center conductor held in the outer conductor and a plurality of insulators, the outer conductor and the center conductor being spaced apart, the outer conductor comprising a flange from top to bottom in the axial direction, a shell mounted on the flange, an outer spring supported between the flange and the shell in the axial direction, the shell moving in the axial direction relative to the flange, the shell comprising an upper shell with an upper end mounted on the flange and a detachable lower shell mounted on the lower end of the upper shell, the center conductor comprising an upper pin located above and a detachable lower pin held at the lower end of the upper pin, the lower pin moving in the axial direction relative to the upper pin, avoiding replacement of the entire test connector, avoiding large-scale individual manufacturing of the entire test connector, and effectively saving costs during manufacturing and use.

Description

Technical Field

[0001] The utility model relates to the field of electric connectors, in particular to a connector for testing. Background Art

[0002] With the advent of the intelligent era, in today's increasingly miniaturized electronic information field, such as mobile phones, wireless LAN devices and other devices, RF switches are used to detect RF signals of various electronic devices, and test connectors are used to dock with RF switches to detect whether RF indicators meet the standards. Please refer to PCT Utility Model Application No. WO2018003640A1, which discloses a coaxial connector for inspection, including at least an external conductor, a center conductor and an external shell, wherein the cylinder of the external conductor accommodates and installs the remaining components inside and is inserted upward into the external shell, and the cylinder is fixed so that it cannot move relative to the external shell, so that the cylinder and the external shell are set into a non-detachable structure. However, since the external plug and pin of the coaxial connector for inspection are prone to wear after repeated detection of the RF switch, the coaxial connector for inspection is usually limited in service life. However, when the coaxial connector for inspection of the utility model application reaches its service life, it needs to be replaced as a whole, resulting in a high cost of use.

[0003] Therefore, it is necessary to propose a new test connector technology solution that can meet the technical indicators for detection and effectively reduce the cost of use. Utility Model Content

[0004] In view of this, it is necessary to provide a new test connector to effectively reduce the manufacturing and use costs.

[0005] In order to solve the above technical problems, the present application provides a test connector, including an external conductor extending in an axial direction and having a cylindrical structure, a central conductor held in the external conductor and a plurality of insulators, the external conductor and the central conductor are spaced apart, the external conductor includes a flange from top to bottom in the axial direction, a shell installed on the flange, and an external spring supported between the flange and the shell in the axial direction, the shell moves in the axial direction relative to the flange, the shell includes an upper shell whose upper end is installed on the flange and a detachable lower shell installed at the lower end of the upper shell, the central conductor includes an upper pin located above and a detachable lower pin held at the lower end of the upper pin, and the lower pin moves in the axial direction relative to the upper pin.

[0006] Furthermore, the lower end of the upper shell is fixed to the upper end of the lower shell by means of threads.

[0007] Furthermore, the lower end of the central conductor protrudes downward from the lower end edge of the outer conductor.

[0008] Furthermore, the central conductor further includes an inner spring supported between the upper pin and the lower pin.

[0009] Furthermore, the test connector is connected to a coaxial cable, the coaxial cable includes a core wire located at a central position, the upper pin includes a core wire mounting groove located at the upper end and extending downward along the axial direction and a lower protrusion located at the lower end and extending downward along the axial direction, and the core wire of the coaxial cable is fixed in the core wire mounting groove.

[0010] Furthermore, the lower protrusion is a boss structure or a cone structure.

[0011] Furthermore, the lower pin includes a spring mounting groove located at the upper end and extending downward along the axial direction, and a test head located at the center of the lower end and extending downward along the axial direction. The inner spring is accommodated in the spring mounting groove, and the lower protrusion of the upper pin is inserted into or removed from the spring mounting groove.

[0012] Furthermore, the lower pin includes a tubular portion located above and a needle portion located below the tubular portion in the axial direction, the tubular portion includes a fixing groove located at the upper end and a spring mounting groove located at the lower end, the needle portion includes an upper protrusion located at the upper end and a test head located at the lower end, the inner spring is accommodated in the spring mounting groove, the upper protrusion of the lower pin is inserted into the spring mounting groove or pulled out from the spring mounting groove, and the lower protrusion of the upper pin is inserted into the fixing groove or pulled out from the fixing groove.

[0013] Furthermore, the fixing groove of the tubular portion further includes a plurality of slots extending from top to bottom along the axial direction, and an extension length of the slots in the direction is smaller than an extension length of the fixing groove of the tubular portion in the direction.

[0014] Furthermore, the test connector is connected to a coaxial cable, the coaxial cable includes a core wire located at a central position, the upper pin includes a core wire mounting groove located at an upper end and extending downward along the axial direction and a spring mounting groove located at a lower end and extending upward along the axial direction, the lower pin includes an upper protrusion located at an upper end and extending upward along the axial direction and a test head located at a central position of the lower end and extending downward along the axial direction, the core wire of the coaxial cable is fixed to the core wire mounting groove, the inner spring is accommodated in the spring mounting groove, and the upper protrusion of the lower pin is inserted into or pulled out of the spring mounting groove.

[0015] Furthermore, the spring installation slot is provided with a plurality of slots extending from top to bottom along the axial direction, and an extension length of the slots in the direction is smaller than an extension length of the spring installation slot in the direction.

[0016] Furthermore, the plurality of insulators include an upper insulator, which mounts the upper pin on the upper shell, and the upper insulator is sleeved on the outer periphery of the core wire mounting groove of the upper pin. The upper insulator and the outer periphery of the core wire mounting groove are interference fit, and the upper shell, upper insulation and upper pin are fixed in relative positions in the axial direction.

[0017] Furthermore, the plurality of insulators include a lower insulator fixed in the lower shell, the outer periphery of the lower insulator is interference fit with the inner surface of the lower shell, and the lower pin passes downward through the lower insulator and is slidingly fit with the lower insulator.

[0018] Furthermore, the upper insulator limits the upper pin upward in the axial direction, and the lower insulator limits the lower pin downward in the axial direction.

[0019] Furthermore, the surfaces of the upper shell and the lower shell are both provided with clamping portions for clamping with tools such as wrenches.

[0020] Compared with the prior art, the test connector of the utility model has the following advantages: since the shell of the test connector adopts a design of a split and detachable upper shell and lower shell, when the lower end of the lower shell and the switch connector are worn during repeated use, the lower shell can be removed and replaced; and since the center conductor also adopts a design of a split and detachable upper pin and lower pin, a design scheme for replacing parts of the center conductor that are prone to wear is further provided, thereby achieving the purpose of all test end parts of the test connector being replaceable, avoiding replacement of the entire test connector, avoiding large-scale separate manufacturing of the entire test connector, and effectively saving costs during manufacturing and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional assembly diagram of the test connector of the utility model;

[0022] Figure 2 This is a three-dimensional exploded view of the test connector of the utility model;

[0023] Figure 3 It is a cross-sectional view of the test connector of the utility model in a free state;

[0024] Figure 4 This is a cross-sectional view of the test connector of the utility model when testing a radio frequency switch;

[0025] Figure 5 It is a three-dimensional combination diagram of a second embodiment of the test connector of the utility model;

[0026] Figure 6 It is a perspective exploded view of a second embodiment of the test connector of the utility model;

[0027] Figure 7 It is a cross-sectional view of the second embodiment of the test connector of the utility model in a free state;

[0028] Figure 8 It is a cross-sectional view of the second embodiment of the test connector of the utility model when testing a radio frequency switch;

[0029] Fig. 9 It is a three-dimensional combination diagram of a third embodiment of the test connector of the utility model;

[0030] Fig.10 It is a three-dimensional exploded view of a third embodiment of the test connector of the utility model;

[0031] Fig.11 It is a cross-sectional view of the third embodiment of the test connector of the utility model in a free state;

[0032] Fig.12 It is a cross-sectional view of the third embodiment of the test connector of the utility model when testing a radio frequency switch;

[0033] Fig.13 It is a three-dimensional combination diagram of a fourth embodiment of the test connector of the utility model;

[0034] Fig.14 It is a three-dimensional exploded view of a fourth embodiment of the test connector of the utility model;

[0035] Fig.15 It is a cross-sectional view of the fourth embodiment of the test connector of the utility model in a free state;

[0036] Fig.16 It is a cross-sectional view of the fourth embodiment of the test connector of the utility model when testing a radio frequency switch;

[0037] Fig.17 It is a three-dimensional assembly diagram of a fifth embodiment of the test connector of the utility model;

[0038] Fig.18 It is a perspective exploded view of a fifth embodiment of the test connector of the utility model;

[0039] Fig.19 It is a cross-sectional view of the fifth embodiment of the test connector of the utility model in a free state;

[0040] Fig. 20 It is a cross-sectional view of the fifth embodiment of the test connector of the utility model when testing a radio frequency switch;

[0041] Fig.21It is a three-dimensional combination diagram of a sixth embodiment of the test connector of the utility model;

[0042] Fig. 22 It is a perspective exploded view of a sixth embodiment of the test connector of the utility model;

[0043] Fig.23 It is a cross-sectional view of the sixth embodiment of the test connector of the utility model in a free state;

[0044] Fig.24 It is a cross-sectional view of the sixth embodiment of the test connector of the utility model when testing a radio frequency switch;

[0045] Fig.25 It is a three-dimensional combination diagram of a radio frequency switch in the prior art.

[0046] The meanings of the reference numerals in the accompanying drawings are as follows: test connector 100; RF switch 200; outer shell 201; plastic body 202; movable terminal 204; external thread portion 301; internal thread portion 302; coaxial cable T; core wire T1; transfer RF coaxial connector S; external conductor 10; flange 1; fixing portion 11; accommodating space 12, 13; accommodating portion 14; lower hole portion 15; upper shell 2; upper cover portion 21; upper tube portion 22; first annular protrusion 23; slot 231; lower tube portion 24; inner annular protrusion 25; second annular protrusion 26; upper section portion 27; Middle part 28; lower section 29; outer spring 31; inner spring 32; lower shell 4; abutment part 41; center conductor 20; upper pin 5; core wire mounting groove 51; through hole 52; lower protrusions 53, 53'; upper boss part 54; lower pin 6; test head 61; upper protrusions 62, 62'; tubular part 63; fixing groove 64; needle-shaped part 65; slot 66; lower boss part 67; upper insulator 71; lower insulator 72; plastic sleeve 73; plastic ring 74; spring mounting groove 81; slot 82; pressure ring 91; screw sleeve 92; clamping part 93. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0048] 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.

[0049] 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.

[0050] This application is Figure 1 The X direction is the left-right direction (lateral direction), the Y direction is the front-back direction (longitudinal direction), and the Z direction is the vertical direction (axial direction). Figure 1 In the embodiment, the flange 1 is located above the lower shell 4 in the axial direction Z.

[0051] Please refer to Figures 1 to 25 As shown, the utility model provides a test connector 100 for testing a radio frequency switch 200, which is a type of radio frequency coaxial connector. The test connector 100 extends as a whole along the axial direction Z, and defines a mounting end for mounting on a detection machine (not shown) and a test end away from the mounting end and used to test the radio frequency switch 200. The test end is a part that can be removed and replaced from the mounting end, thereby achieving the purpose of the utility model providing a new test connector 100.

[0052] The test connector 100 provided by the utility model comprises an outer conductor 10, a center conductor 20 held in the outer conductor 10, and a plurality of insulators. The outer conductor 10 and the center conductor 20 are spaced apart. First, please refer to Fig.25 As shown, the applicant discloses an existing radio frequency switch 200, which includes an outer shell 201, a plastic body 202 fixed in the outer shell 201, a static terminal (not shown) and a dynamic terminal 204. Under normal circumstances, the dynamic terminal 204 elastically abuts against the static terminal (not shown) from bottom to top in the axial direction Z. When the test connector 100 provided by the utility model tests the radio frequency switch 200, the lower end of the central conductor 20 extends downward into the interior of the radio frequency switch 100 and presses the dynamic terminal 204 downward, so that the dynamic terminal 204 is separated from the static terminal (not shown) and is connected to the central conductor 20, and the external conductor 10 is downwardly abutted against the upper end of the outer shell 201, thereby achieving the purpose of testing.

[0053] The outer conductor 10 and the center conductor 20 are both defined with a mounting end and a test end. The outer conductor 10 includes a flange 1 located at the top in the axial direction Z and used to be fixed on a detection machine (not shown), an upper shell 2 mounted on the flange 1, an outer spring 31 supported between the flange 1 and the upper shell 2 in the axial direction Z, and a lower shell 4 mounted on the upper shell 2. The flange 1 as a whole can be formed by extending in a plane perpendicular to the axial direction Z, and the center position is used for the fixing portion 11 fixed to the upper shell 2. The upper shell 2 and the lower shell 4 are cylindrical and extend along the axial direction Z. The lower edge of the lower shell 4 is provided with a contact portion 41 for contacting the outer shell of the radio frequency switch 200 downward. The outer surface of the lower end of the upper shell 2 is provided with an external thread portion 301, and the inner surface of the upper end of the lower shell 4 is provided with an internal thread portion 302 that cooperates with the external thread portion 301 of the upper shell 2, so that the upper shell 2 and the lower shell 4 can be installed or removed by thread.

[0054] The central conductor 20 is installed at the center of the outer conductor 10 and extends along the axial direction Z. The central conductor 20 includes an upper pin 5 located above the axial direction Z and accommodated in the outer conductor 10, a lower pin 6 installed below the upper pin 5, and an inner spring 32 supported between the upper pin 5 and the lower pin 6 in the axial direction Z. The lower pin 6 can be separated from the lower side of the upper pin 4. The lower end of the lower pin 6 protrudes downward from the lower edge of the outer conductor 10.

[0055] The plurality of insulators at least include an upper insulator 71 and a lower insulator 72 located below the upper insulator 71 in the axial direction Z. The upper insulator 71 mounts the upper pin 5 on the upper housing 2 , and the lower insulator 72 mounts the lower pin 6 in the lower housing 4 .

[0056] Please refer to Figure 1 and Figure 2 As shown, during the test use of the test connector 100 of the utility model, the installation end of the test connector 100 is not only fixed on the detection machine (not shown), but also needs to be connected to the detection machine (not shown) through at least one coaxial cable T to realize the test function. One end of the coaxial cable T is connected to the test connector 100, and the other end is directly connected to the detection machine (not shown) or connected to the detection machine (not shown) through a switching RF coaxial connector S. The switching RF coaxial connector S involved in the utility model is a prior art product and is not described in detail here. The coaxial cable T is a prior art product and includes a core wire T1 located in the center position, an inner insulating layer covering the outside of the core wire, a conductor layer covering the outside of the inner insulating layer, and a sheath layer covering the outside of the conductor layer. The core wire T1 at one end of the coaxial cable T is connected to the upper pin 5, and the core wire T1 at the other end is connected to the switching RF coaxial connector S.

[0057] Please refer to Figures 1 to 24 As shown, the flange 1, upper shell 2, outer spring 31 and upper insulator 71 of the outer conductor 10 are defined as the components of the mounting end of the test connector 100 of the present invention, and the lower shell 4 of the outer conductor 10 and the upper pin 5, lower pin 6, inner spring 32 and lower insulator 72 of the center conductor 20 are defined as the components of the test end of the test connector 100 of the present invention. The components of the test end and the components of the mounting end are fixedly mounted in the axial direction Z, but the components of the test end are designed to be detachable from the components of the mounting end.

[0058] Further, in the design where the components of the test end can be detached from the components of the mounting end, please refer to Figures 1 to 8 and Figures 17 to 24 As shown, the upper plug pin 5 includes a core wire installation groove 51 located at the upper end and extending downward along the axial direction Z, and a lower protrusion 53 located at the center of the lower end and extending downward along the axial direction Z. The opening of the core wire installation groove 51 is upward and is used to install the core wire T1 of the coaxial cable T. The core wire installation groove 51 is also provided with a through hole 52 that penetrates the outer wall of the upper plug pin 5 at the position of the core wire installation groove 51 to facilitate the core wire T1 to be fixed in the core wire installation groove 51 by welding. The lower protrusion 53 is used to cooperate with the top end of the lower plug pin 6 downward. The cross section of the lower protrusion 53 perpendicular to the axial direction Z is smaller than the cross section of the main body of the upper plug pin. The lower protrusion 53 can be a boss structure or a conical structure.

[0059] The lower pin 6 includes a spring mounting groove 81 located at the upper end and extending downward along the axial direction Z, and a test head 61 located at the center of the lower end and extending downward along the axial direction Z. The opening of the spring mounting groove 81 is upward and is used to accommodate the inner spring 32 and the lower protrusion 53 of the upper pin 5 for insertion or withdrawal, so as to achieve elastic movement of the lower pin 6 relative to the upper pin 5 in the axial direction Z. The test head 61 is used to contact the moving terminal 204 of the RF switch 200. The inner spring 32 is supported upward on the lower end of the upper pin 5 and provides downward elastic support for the lower pin 6. The lower protrusion 53 is inserted into the central space of the inner spring 32 to maintain the correct position between the upper pin 5, the inner spring 32 and the lower pin 6 when used in combination.

[0060] The applicant needs to emphasize here that the downward elastic supporting force provided by the inner spring 32 on the lower pin 6 is greater than the downward pressure required for the moving terminal 204 of the RF switch 200 to move downward from the static terminal (not shown), that is, during the process from the test head 61 of the lower pin 6 pressing downward against the moving terminal 204 of the RF switch 200 until the moving terminal 204 is separated from the static terminal (not shown), the inner spring 32 does not reach the compression limit and elastic failure does not occur, so that the lower pin 6 can be reset after being withdrawn from the moving terminal 204.

[0061] Since the upper pin 5 is held in the upper shell 2 by the upper insulator 71, and the lower pin 6 is held in the lower shell 4 by the lower insulator 72, and since the lower shell 4 can be disassembled and separated from the upper shell 2, the lower shell 2, the lower pin 6, the lower insulator 72, the inner spring 32 and the upper pin 5 that may be worn can be replaced, that is, the test end of the test connector 100 of the utility model can be replaced, thereby achieving the purpose of reducing costs.

[0062] Further, the cooperation between the upper pin and the lower pin of the test connector of the utility model can also be set as follows: Figures 13 to 16 As shown, the upper end of the upper pin 5 is provided with a core wire installation groove 51 for installing the core wire T1 of the coaxial cable T, and the lower end thereof is provided with a spring installation groove 81 extending upward along the axial direction Z. The upper end center position of the lower pin 6 is provided with an upper protrusion 62 extending upward along the axial direction Z, and the lower end center position thereof is provided with a test head 61 extending downward along the axial direction Z. The inner spring 32 is accommodated in the spring installation groove 81 of the upper pin 5, and the upper protrusion 62 of the lower pin 6 is inserted upward or withdrawn downward from the lower end of the spring installation groove 81. The upper protrusion 62 is inserted into the central space of the inner spring 32 to achieve the purpose of maintaining the correct position between the upper pin 5, the inner spring 32 and the lower pin 6 when used in combination.

[0063] Furthermore, the cooperation between the upper pin and the lower pin of the test connector of the utility model can also be set as follows: Figures 9 to 12As shown, the upper end of the upper pin 5 is provided with a core wire installation groove 51 for installing the core wire T1 of the coaxial cable T, and the lower end thereof is provided with a lower protrusion 53'. The lower pin 5 includes a tubular portion 63 located at the top along the axial direction Z and a needle portion 65 located below the tubular portion 63. The tubular portion 63 and the needle portion 65 are separately provided. The upper end of the tubular portion 63 is provided with a fixing groove 64 for accommodating the upper protrusion 53' and having an interference fit therewith, and the lower end of the tubular portion 63 is provided with a spring installation groove 81 for installing and accommodating the inner spring 32. The needle portion 65 includes an upper protrusion 62' arranged at the upper end and a test head 61 located at the lower end. A detachable structure is provided between the lower protrusion 53' of the upper pin 5 and the fixing groove 64 of the tubular portion 63. The upper protrusion 62' of the needle-shaped portion 65 is inserted upward into the spring mounting groove 81 of the tubular portion 63 for sliding fit, and the inner spring 32 provides an elastic supporting force for the needle-shaped portion 65 in the axial direction Z. The upper protrusion 53' is inserted into the central space of the inner spring 32 to maintain the correct position between the tubular portion 63, the inner spring 32 and the needle-shaped portion 65 when used in conjunction. The fixing groove 64 of the tubular portion 63 further includes a plurality of slots 66 from top to bottom along the axial direction Z. The extension length of the slot 66 in the Z direction is less than the extension length of the fixing groove 64 of the tubular portion 63 in the Z direction. The fixing groove 64 provided with the slot 66 is elastic and can better cooperate with the lower protrusion 53'.

[0064] In summary, the arrangement method between the upper pin 5 and the lower pin 6 and the inner spring 32 is not unique and can be changed according to specific usage conditions. It can achieve the goal of not only satisfying the contact between the lower pin 6 and the moving terminal 204 of the RF switch 200 to realize the test function, but also having at least three ways to realize the elastic support and disassembly implementation method between the upper pin 5 and the lower pin 6.

[0065] Please refer to Figures 1 to 24 As shown, in some embodiments of the utility model, in order to ensure the stable cooperation between the lower pin 6 and the upper pin 5, it is further proposed that the spring installation groove 81 is provided with a plurality of slots 82 from top to bottom along the axial direction Z. The extension length of the slot 82 in the Z direction is less than the extension length of the spring installation groove 81 in the Z direction. The spring installation groove 81 provided with the slot 82 is elastic. When the inner spring 32 and the raised portion of the upper pin 5 or the lower pin 6 are inserted, during use, the inner spring 32 and the upper pin 5 or the lower pin 6 can slide smoothly with the spring installation groove 81 to avoid the occurrence of jamming.

[0066] Please refer to Figures 9 to 20As shown, further, since the upper insulator 71 installs the upper pin 5 on the upper shell 2, the upper pin 5 is fixed relative to the upper shell 2 in the axial direction Z. After the core wire installation groove 51 of the upper pin 5 is installed and fixed with the core wire T1 of the coaxial cable T, the upper insulator 71 is sleeved on the outer periphery of the core wire installation groove 51 and fixed as a whole in the upper shell 2. The upper insulator 72 and the outer periphery of the upper pin 5 at the core wire installation groove 51 are interference fit, and the outer periphery of the upper insulator 71 and the inner periphery of the upper shell 2 are interference fit, so that the three are firmly fixed and not easy to separate.

[0067] The purpose of the upper insulator 71 is to prevent the upper pin 5 from being separated from the upper housing 2 in the axial direction Z, so the upper pin 5 further includes an upper boss portion 54 located below the core wire installation groove 51. The cross section of the upper boss portion 54 perpendicular to the axial direction Z is larger than that of the core wire installation groove 51, so that the upper boss portion 54 is supported upward against the upper insulator 71.

[0068] In some embodiments of the present invention, please refer to Figures 1 to 8 As shown, the upper insulator 71 is installed above the upper shell 2 or at the upper end of the upper shell 2, and near the side of the installation end. In the upward limit design of the upper insulator 71, a pressure ring 91 can be used to press downward against the upper end of the upper insulator 71 to achieve the upward limit of the upper insulator 71. Therefore, in these embodiments, the overall length of the upper pin 5 in the axial direction Z is relatively long. In order to ensure the accuracy and stability of the fixation of the center position of the upper pin 5 in the upper shell 2, a plastic ring 73 is also provided in some insulators. The plastic ring 73 is sleeved on the end of the upper pin 5 away from the core wire installation groove 51, and the plastic ring 73 and the upper pin 5 are interference fit, and the plastic ring 71 can slide up and down along the axial direction Z in the upper shell 2. At this time, the length of the coaxial cable T extending into the upper shell 2 is relatively short.

[0069] Please refer to Figures 9 to 20 As shown, in some other embodiments of the upper insulator 71 in the present invention, the upper insulator 71 is installed in the lower end of the upper shell 2, that is, away from the installation end. The inner side of the lower end of the upper shell 2 (or the lower tube 24) forms a step structure, and the upper insulator 71 is supported upward on the step surface of the step structure to achieve the upward limit of the upper insulator 71. At this time, the overall length of the upper pin 5 in the axial direction Z is shorter, while the length of the coaxial cable T extending into the upper shell 2 is longer.

[0070] Please refer to Figures 1 to 24As shown, further, the lower insulator 72 is fixed in the lower shell 4, and the outer periphery of the lower insulator 72 is interference-fitted with the inner surface of the lower shell 4, and the lower insulator 72 is fixed relative to the lower shell 4 in the axial direction Z. The purpose of the lower insulator 72 is to allow the test head of the lower pin 6 to pass through and slide with it. The test head 61 of the lower pin 6 is provided with a lower boss portion 67 at a position above the lower insulator 72, and the lower boss portion 67 presses downward against the upper end of the lower insulator 72.

[0071] Furthermore, the design of the fixing method of the flange 1 and the upper shell 2 can be divided into two types: the flange 1 and the upper shell 2 are fixed in the axial direction Z direction and the flange 1 and the upper shell 2 are slidably matched in the axial direction Z direction. Figures 1 to 4 As shown, in the embodiment where the flange 1 and the upper shell 2 are fixedly installed, the fixing portion 11 of the flange 1 includes a receiving space 12 located at the upper end and a lower hole portion 15 located at the lower end and connected to the receiving space 12 from top to bottom. The cross section of the receiving space 12 perpendicular to the axial direction Z is larger than the corresponding cross section of the lower hole portion 15. At this time, the upper insulator 71 is installed downwardly at the bottom of the receiving space 12 and presses downward against the upper end of the upper shell 2, and the upper shell 2 is installed upwardly in the lower hole portion 15 and presses upward against the lower end of the upper insulator 71. The core wire installation groove 51 of the upper pin 5 is fixed in the upper insulator 71 and fixed to the core wire T1 of the coaxial cable T. The test connector 100 of the utility model also includes a pressure ring 91 for being fixed in the receiving space 12 from top to bottom and pressing downward against the upper insulator 71.

[0072] In the embodiment where the flange 1 and the upper shell 2 are slidably matched up and down, please refer to Figures 5 to 8 As shown, the upper shell 2 includes a limiting structure located at the top, and the limiting structure can be that the upper end of the upper shell 2 is provided with a receiving portion 14 that gradually expands from bottom to top, and the upper shell 2 passes through the opening of the fixing portion 11 of the flange 1 from top to bottom. The cross-section of the receiving portion 14 perpendicular to the axial direction Z is larger than the opening cross-section of the fixing portion 11, and the receiving portion 14 is downwardly pressed against the upper end of the fixing portion 11 to achieve the purpose of limiting. Since the lower end of the receiving portion 14 is conical, it can effectively avoid the upper shell 2 and the flange 1 from getting stuck when sliding up and down. The receiving portion 14 is provided with a receiving space 13, and the upper insulator 71 holds the core wire mounting groove 51 of the upper pin 5 and is inserted into the receiving space 13 of the upper shell 2 from top to bottom together with the upper pin 51. At this time, the upper insulator 71 is pressed downward against the lower end of the accommodating space 13 , and the pressing ring 91 is fixed in the accommodating space 13 from top to bottom and presses downward against the upper insulator 71 .

[0073] Further, in other embodiments where the flange 1 and the upper shell 2 are slidably matched up and down, please refer to Figure 21 to Figure 24 As shown, the limiting structure at the top of the upper shell 2 can also be a screw sleeve 92 further provided by the test connector 100 of the utility model. The cross section of the screw sleeve 92 perpendicular to the axial direction Z is larger than the cross section of the opening of the fixing portion 11 of the flange 1. The upper shell 2 passes through the opening of the fixing portion 11 of the flange 1, and the upper end of the upper shell 2 is threadedly fixed to the screw sleeve 92, so that the screw sleeve 92 can press downward against the upper end of the fixing portion 11 to achieve the purpose of downward limiting.

[0074] Further, in other embodiments where the flange 1 and the upper shell 2 are slidably matched up and down, please refer to Figures 9 to 20 As shown, the limiting structure at the top of the upper shell 2 can also be that the upper shell 2 is provided with an upper cover portion 21 located at the top, and the cross section of the upper cover portion 21 perpendicular to the axial direction Z is larger than the cross section of the opening of the fixing portion 11. The upper shell 2 passes through the opening of the fixing portion 11 from top to bottom, and the upper cover portion 21 is held downward against the upper end of the fixing portion 11 to achieve the purpose of downward limiting.

[0075] In order to achieve the purpose of fixing the outer spring 31 between the flange 1 and the upper shell 2, the utility model proposes different implementation methods for the two situations where the flange 1 and the upper shell 2 are fixed to each other and the two slide up and down relative to each other. It should be pointed out that the outer spring 31 is supported upwardly against the lower end of the flange 1, and downwardly against the protrusion structure formed by the cross section of the outer peripheral surface of the upper shell 2 protruding outward along the axial direction Z, so as to provide elastic supporting force between the flange 1 and the upper shell 2.

[0076] In the embodiment where the flange 1 and the upper shell 2 are fixed to each other, please refer to Figures 1 to 4As shown, the upper shell 2 includes an upper tube portion 22 and a lower tube portion 24 that slides up and down with the upper tube portion 22. The circumference of the lower end of the upper tube portion 22 protrudes outward along a section perpendicular to the axial direction Z to form a first annular protrusion 23 and a plurality of slots 231 extending upward along the axial direction Z. The lower end of the upper tube portion 22 is provided with a slot 231 to make the lower end of the upper tube portion 22 elastic, which is convenient for installation and fixation with the lower tube portion 24. The inner diameter of the lower tube portion 24 is larger than the first annular protrusion 23. The inner circumference of the upper end of the lower tube portion 24 protrudes inward along a section perpendicular to the axial direction Z to form an inner ring protrusion 25, and the lower end of the lower tube portion 24 is provided with an outer thread portion 301 that cooperates with the inner thread portion 302 at the upper end of the lower shell 6. When viewed along the axial direction Z, the first annular protrusion 23 and the inner ring protrusion 25 are overlapped. Therefore, firstly, the upper tube 22 is passed through the lower tube 24 from bottom to top, and then the outer spring 31 is sleeved on the outer side of the upper tube 22 from top to bottom, and then the upper end of the upper tube 22 is fixed upward in the opening of the fixing portion 11 of the flange 1. At this time, the outer spring 31 is pressed upward against the lower end of the fixing portion 11 of the flange 1, and is pressed downward against the upper end of the lower tube 24, so that the lower tube 24 can elastically slide up and down relative to the flange 1 in the axial direction Z. The upper end of the lower tube 24 can be regarded as a protruding structure on the outer peripheral surface of the upper shell 2.

[0077] In the embodiment in which the flange 1 and the upper shell 2 slide up and down with each other, the upper shell 2 can be an integral component; it can also include an upper tube 22 and a lower tube 24 fixedly matched with the upper tube 22, and the upper tube 22 and the lower tube 24 can be fixed by riveting or threading. The upper end of the upper shell 2 or the upper tube 22 is held downward against the upper end of the fixing portion 11 by one of the accommodating portion 14, the screw sleeve 92 or the upper cover 21 in the above embodiment to achieve the function of downward limit.

[0078] Further, in the embodiment where the upper housing 2 is an integral component, please refer to Figure 21 to Figure 24As shown, the upper shell 2 includes an upper section 27, a middle section 28 and a lower section 29 arranged from top to bottom. The cross section of the middle section 28 perpendicular to the axial direction Z is larger than the corresponding cross sections of the upper section 27 and the lower section 29. The lower section 29 is provided with an external threaded portion 301 that cooperates with the internal threaded portion 302 at the upper end of the lower shell 4. First, the outer spring 31 is sleeved on the outer side of the upper section 27 of the upper shell 2 from top to bottom, and then the upper section 27 of the upper shell 2 is passed through the opening of the fixing portion 11 of the flange 1 from bottom to top. The upper end of the upper section 27 cooperates with the screw sleeve 92 in the above embodiment to achieve the effect of downwardly abutting against the upper end of the fixing portion 11 to achieve the downward limit. At this time, the outer spring 32 abuts upward against the lower end of the fixing portion 11 of the flange 1 and downward against the middle section 28 of the upper shell 2, so that the upper shell 2 as a whole elastically slides up and down relative to the flange 1 in the axial direction Z. The middle portion 28 of the lower tube portion 22 can be regarded as a protruding structure on the outer peripheral surface of the upper shell 2 .

[0079] Further, in the embodiment where the upper tube portion 22 and the lower tube portion 24 are fixed by riveting, please refer to Figures 5 to 8 As shown, the lower end of the upper tube portion 22 is inserted into the lower tube portion 24 and the two are fixed by riveting. The upper end of the lower tube portion 24 is provided with a second annular protrusion 26 formed by protruding outward along a cross section perpendicular to the axial direction Z, and the lower end of the lower tube portion 24 is provided with an external thread portion 301 that cooperates with the internal thread portion 302 at the upper end of the lower shell 4. The upper end of the upper tube portion 22 can be one of the accommodating portion 14, the screw sleeve 92 or the upper cover portion 21 in the above-mentioned embodiment to achieve the effect of downwardly abutting against the upper end of the fixing portion 11 to achieve the function of downward limiting. First, the upper tube 22 passes through the opening of the fixing part 11 of the flange 1 from top to bottom or from bottom to top, then the outer spring 31 is sleeved on the outer side of the upper tube 22 from bottom to top, and then the lower tube 24 is riveted and fixed to the upper tube 22; or in other embodiments, the lower tube 24 can be riveted and fixed to the upper tube 22 first, then the outer spring 31 is sleeved on the outer side of the upper tube 22 from top to bottom, and then the upper tube 22 passes through the opening of the fixing part 11 of the flange 1 from top to bottom. At this time, the outer spring 31 is supported upwardly against the lower end of the fixing part 11 of the flange 1, and is supported downwardly against the upper end of the second annular protrusion 26 of the lower tube 24, so that the upper tube 22 and the lower tube 24 can be elastically slid up and down relative to the flange 1 in the axial direction Z as a whole (i.e., the upper shell 2). The second annular protrusion 26 of the lower tube 22 can be regarded as a protrusion structure on the outer peripheral surface of the upper shell 2.

[0080] Further, in the embodiment where the upper tube portion 22 and the lower tube portion 24 are fixed by threaded fixing, please refer to Figures 9 to 20 As shown, the outer peripheral edge of the lower end of the upper tube 22 is provided with an external threaded portion 301, and the lower tube 24 includes an upper section 27, a middle section 28 and a lower section 29 arranged from top to bottom. The upper section 27 is provided with an internal threaded portion 302 that cooperates with the external threaded portion 301 at the lower end of the upper tube 22, the middle section 28 connects the upper section 27 and the lower section 29, and the lower section 29 is provided with an external threaded portion 301 that cooperates with the internal threaded portion 302 at the upper end of the lower shell 4. The cross section of the upper section 27 perpendicular to the axial direction Z is larger than the corresponding cross section of the upper tube 22. The upper end of the upper tube 22 can be one of the accommodating portion 14, the screw sleeve 92 or the upper cover 21 in the above-mentioned embodiment to achieve the effect of downwardly abutting against the upper end of the fixing portion 11 to achieve the downward limit. When the upper end of the upper tube portion 22 is such as the accommodating portion 14 or the upper cover portion 21 in the above-mentioned embodiments, first, the upper tube portion 22 is passed through the opening of the fixing portion 11 of the flange 1 from top to bottom or from bottom to top, and then the outer spring 31 is sleeved on the outer side of the upper tube portion 22 from bottom to top, and then the upper section 27 of the lower tube portion 22 is fixed to the lower end of the upper tube portion 22 by threads; or when the upper end of the upper tube portion 22 is matched with the threaded sleeve 92 as in the above-mentioned embodiments, the upper section 27 of the lower tube portion 24 can be first fixed to the lower end of the upper tube portion 22 by threads, and then the outer spring 31 is sleeved on the outer side of the upper tube portion 11 from top to bottom, and then the upper tube portion 22 is passed through the opening of the fixing portion 11 of the flange 1 from bottom to top. At this time, the outer spring 31 is pressed upward against the lower end of the fixing portion 11 of the flange 1, and is pressed downward against the upper end of the upper section 27 of the lower tube 24, so that the upper tube 22 and the lower tube 24 can elastically slide upward and downward relative to the flange 1 in the axial direction Z as a whole (i.e., the upper shell 2). The upper section 27 of the lower tube 24 can be regarded as a protruding structure on the outer peripheral surface of the upper shell 2.

[0081] The external threaded portion 301 and the internal threaded portion 302 fixed with the external threaded portion 301 mentioned in the present invention are not exclusive definitions, and the positions of the external threaded portion 301 and the internal threaded portion 302 can be alternated. In addition to using threads to fix the lower shell 4 and the upper shell 2, glue, epoxy resin and other materials can also be used to achieve the fixing effect.

[0082] For further information, please refer to Figures 9 to 20As shown, in order to ensure smooth sliding between the upper shell 2 and the flange 1 and reduce the wear between the two, and extend the service life of the two, the test connector 100 of the utility model can also include a plastic ring 74. The plastic ring 74 is located in the opening of the fixing portion 11. The outer periphery of the plastic ring 74 is interference-fitted with the inner surface of the opening of the fixing portion 11 to achieve a fixing effect. The upper shell 2 and the plastic ring 74 are slidably matched up and down. In some embodiments, the outer spring 31 can be supported upwardly on the lower end of the plastic ring 74 to reduce the wear between the flange 1 and the outer spring 31.

[0083] Please refer to Figures 1 to 24 As shown, in a specific use process, the test connector 100 is installed on a detection machine (not shown) through the flange 1, so that the other end of the coaxial cable T is connected to the detection machine (not shown). First, align the test connector 100 with the RF switch 200 in the axial direction Z, and then move the test connector 100 downward; during the downward process, the test head 61 of the lower pin 6 first contacts the movable terminal 204 of the RF switch 200 downward, and in this process, presses the movable terminal 204 downward, and at the same time, the contact portion 41 of the lower shell 4 contacts the outer shell 201 of the RF switch 200 downward; the test connector 100 continues to move downward, and the movable terminal 204 is separated from the static terminal (not shown) under the downward pressure of the test head 61, and the inner spring 32 is compressed in the axial direction Z, and the test head 61 moves upward relative to the upper pin 5, and the lower shell 4 drives the upper shell 2 as a whole, or the whole formed by the upper tube 22 and the lower tube 24, or the lower tube 24 to compress the outer spring 31 upward and move upward relative to the flange 1, and at the same time, the movable terminal 204 is connected to the core wire T1 of the coaxial cable T through the central conductor 20, and data detection is performed by a detection machine (not shown). After the test is completed, the test connector 100 is moved upward until the test connector 100 is separated from the RF switch 200. During this process, the outer spring 31 resets the upper shell 2 and the lower shell 4 as a whole downward, and the inner spring 32 resets the lower pin 6 as a whole, so that it can be used reciprocally. After a long time or a large number of uses, the test head 61 of the lower pin 6, the inner spring 32, the inner surface of the spring mounting groove 81, the lower end outer peripheral surface of the upper pin 5 and the contact portion 41 of the lower shell 4 will be worn. At this time, the lower shell 4 is separated from the upper shell 2 (or the lower tube 24), and the upper pin 5, the lower pin 6, the lower shell 4 and the lower insulator 72 can be replaced. After reassembly, it can continue to be used.

[0084] When replacing the upper pin 5, it is necessary to separate the upper pin 5 from the upper insulator 71, cut off the connection between the coaxial cable T and the upper pin 5, and then cut out the core wire T1 and pass it through the upper insulator 71; replace the new upper pin 5, and re-weld and fix the core wire T1 to the upper pin 5; then install the upper pin 5 back into the upper insulator 71, and it can be used reciprocally. It should be pointed out here that, under normal circumstances, the length of the coaxial cable T is sufficient, and the new upper pin 5 can be repeatedly cut and replaced, avoiding unnecessary waste and effectively saving costs.

[0085] In order to facilitate the disassembly of the lower shell 4, the surfaces of the upper shell 2 and the lower shell 4 are provided with a clamping portion 93 for clamping with a tool such as a wrench. The clamping portion 93 forms a pair of corresponding clamping surfaces on the surfaces of the upper shell 2 (or the upper tube 22) and the lower shell 4, respectively. When it is necessary to disassemble the lower shell 4, two tools such as wrenches are used to clamp the clamping portions 93 of the upper shell 2 (or the upper tube 22) and the lower shell 4, respectively, and the upper shell 2 is clamped to keep it stationary, so that the direction of rotating the lower shell 4 is opposite to that of the upper shell to disassemble the lower shell 4. Keeping the upper shell 2 stationary can prevent the upper shell 2 from rotating excessively and causing damage to the components in the test linker 100.

[0086] In order to facilitate the disassembly of the lower shell, the surfaces of the upper shell and the lower shell are provided with clamping parts for clamping with tools such as wrenches. The clamping parts form a pair of corresponding clamping surfaces on the surfaces of the upper shell (or upper body) and the lower shell, respectively. When it is necessary to disassemble the lower shell, two tools such as wrenches are used to clamp the clamping parts of the upper shell (or upper body) and the lower shell, respectively, and the upper shell is clamped to keep it stationary, so that the lower shell can be disassembled by rotating the direction opposite to the upper shell. Keeping the upper shell stationary can prevent the upper shell from rotating excessively and causing damage to the components in the test linker.

[0087] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] 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 test connector, comprising an outer conductor extending in an axial direction and having a cylindrical structure, a center conductor held in the outer conductor, and a plurality of insulators, wherein the outer conductor and the center conductor are spaced apart, the outer conductor comprises a flange extending from top to bottom in the axial direction, a shell mounted on the flange, and an outer spring supported between the flange and the shell in the axial direction, the shell moves in the axial direction relative to the flange, characterized in that: The shell includes an upper shell whose upper end is mounted on the flange and a detachable lower shell mounted on the lower end of the upper shell. The center conductor includes an upper pin located at the top and a detachable lower pin fixed at the lower end of the upper pin. The lower pin moves along the axial direction relative to the upper pin.

2. The test connector according to claim 1, characterized in that: The lower end of the upper shell is fixed to the upper end of the lower shell by means of threads.

3. The test connector according to claim 1, characterized in that: The lower end of the central conductor protrudes downward from the lower end edge of the outer conductor.

4. The test connector according to claim 1, wherein: The center conductor further includes an inner spring supported between the upper pin and the lower pin.

5. The test connector according to claim 4, characterized in that: The test connector is connected to a coaxial cable, which includes a core wire located at a central position, and the upper pin includes a core wire mounting groove located at an upper end and extending downward along an axial direction, and a lower protrusion located at a lower end and extending downward along the axial direction, and the core wire of the coaxial cable is fixed in the core wire mounting groove.

6. The test connector according to claim 5, characterized in that: The lower protrusion is a boss structure or a cone structure.

7. The test connector according to claim 5, characterized in that: The lower pin includes a spring mounting groove located at the upper end and extending downward along the axial direction, and a test head located at the center of the lower end and extending downward along the axial direction. The inner spring is accommodated in the spring mounting groove, and the lower protrusion of the upper pin is inserted into the spring mounting groove or pulled out from the spring mounting groove.

8. The test connector according to claim 5, characterized in that: The lower pin includes a tubular portion located above along the axial direction and a needle portion located below the tubular portion, the tubular portion includes a fixing groove located at the upper end and a spring mounting groove located at the lower end, the needle portion includes an upper protrusion located at the upper end and a test head located at the lower end, the inner spring is accommodated in the spring mounting groove, the upper protrusion of the lower pin is inserted into the spring mounting groove or pulled out from the spring mounting groove, and the lower protrusion of the upper pin is inserted into the fixing groove or pulled out from the fixing groove.

9. The test connector according to claim 8, characterized in that: The fixing groove of the tubular portion further comprises a plurality of slots extending from top to bottom along the axial direction, and the extending length of the slots in the axial direction is smaller than the extending length of the fixing groove of the tubular portion in the axial direction.

10. The test connector according to claim 4, characterized in that: The test connector is connected to a coaxial cable, which includes a core wire located at the center position, the upper pin includes a core wire mounting groove located at the upper end and extending downward along the axial direction, and a spring mounting groove located at the lower end and extending upward along the axial direction, the lower pin includes an upper protrusion located at the upper end and extending upward along the axial direction, and a test head located at the center position of the lower end and extending downward along the axial direction, the core wire of the coaxial cable is fixed to the core wire mounting groove, the inner spring is accommodated in the spring mounting groove, and the upper protrusion of the lower pin is inserted into or pulled out of the spring mounting groove.

11. The test connector according to any one of claims 7 to 10, characterized in that: The spring installation slot is provided with a plurality of slots extending from top to bottom along the axial direction, and the extending length of the slots in the direction is smaller than the extending length of the spring installation slot in the direction.

12. The test connector according to claim 4, wherein: The plurality of insulators include an upper insulator, which mounts an upper pin on the upper shell, and is sleeved on the outer circumference of a core wire mounting groove of the upper pin. The upper insulator and the outer circumference of the core wire mounting groove are interference fit, and the upper shell, upper insulation and upper pin are fixed in relative positions in the axial direction; the upper insulator limits the upper pin upward in the axial direction.

13. The test connector according to claim 4, characterized in that: The plurality of insulators include a lower insulator fixed in the lower shell, the outer periphery of the lower insulator is interference fit with the inner surface of the lower shell, the lower pin passes downward through the lower insulator and is slidingly fitted with the lower insulator; the lower insulator limits the lower pin downward in the axial direction.

14. The test connector according to claim 1, wherein: The surfaces of the upper shell and the lower shell are both provided with clamping parts.

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