Test connector

Abstract

The application provides a test connector, comprising an outer conductor, a center conductor held in the outer conductor, and a plurality of insulators, the outer conductor is spaced apart from the center conductor, the outer conductor comprises 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 moves relative to the flange in the axial direction, the shell comprises an upper shell mounted on the flange and a detachable lower shell mounted on the lower end of the upper shell, avoiding replacing the entire test connector, avoiding large quantities of separate manufacturing of the entire test connector, effectively saving the cost in the manufacturing and using process.

Description

Technical Field

[0001] The present invention relates to the field of electrical connectors, and 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 local area network devices, and other devices, radio frequency switches are used to detect radio frequency signals of various electronic devices, and test connectors are used to connect with radio frequency switches to detect whether radio frequency indicators meet the standards. Please refer to PCT invention application No. WO2018003640A1, which discloses a coaxial connector for inspection, which includes at least an outer conductor, a center conductor, and an outer shell, wherein the cylinder of the outer conductor houses the remaining components and is inserted upward into the outer shell. The cylinder is fixed so that it cannot move relative to the outer shell, so that the cylinder and the outer 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 testing of the radio frequency switch, the coaxial connector for inspection usually has a limited service life. However, the coaxial connector for inspection in this invention application needs to be replaced as a whole when its service life reaches the end, resulting in 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. Summary of the Invention

[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 outer conductor, a center conductor held in the outer conductor and a plurality of insulators, the outer conductor and the center conductor are spaced apart, the outer 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, and 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.

[0006] Furthermore, the upper shell and the lower shell are cylindrical structures extending along the axial direction.

[0007] Furthermore, the lower end of the upper shell and the upper end of the lower shell are fixed by means of threads.

[0008] Furthermore, the lower end of the central conductor protrudes downward from the lower end edge of the outer conductor.

[0009] Further, the center conductor is installed at a center position inside the outer conductor and is arranged to extend in the axial direction, the center conductor includes an upper pin located above in the axial direction and accommodated inside the outer conductor, a lower pin installed below the upper pin, and an inner spring supported between the upper pin and the lower pin in the axial direction, the lower pin being detachable from below the upper pin.

[0010] Further, the test connector is connected with a coaxial cable, the coaxial cable includes a core wire located at a center position, the upper pin includes a core wire mounting groove located at an upper end and extending downward in the axial direction and a lower protrusion located at a lower end and extending downward in the axial direction, and the core wire of the coaxial cable is held by the core wire mounting groove.

[0011] Further, the lower protrusion is in a boss structure or a tapered structure.

[0012] Further, the lower pin includes a spring mounting groove located at an upper end and extending downward in the axial direction, a test head located at a lower end at a center position and extending downward in 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 detached from the spring mounting groove.

[0013] Further, the lower pin includes a tubular portion located above in the axial direction and a needle-shaped portion located below the tubular portion, the tubular portion includes a fixing groove located at an upper end and a spring mounting groove located at a lower end, the needle-shaped portion includes an upper protrusion located at an upper end and a test head located at a lower end, the inner spring is accommodated in the spring mounting groove, the upper protrusion of the lower pin is inserted into or detached from the spring mounting groove, and the lower protrusion of the upper pin is inserted into or detached from the fixing groove.

[0014] Further, the fixing groove of the tubular portion further includes a plurality of slots extending downward in the axial direction, and the extension length of the slots in the direction is less than the extension length of the fixing groove of the tubular portion in the direction.

[0015] Further, the test connector is connected with a coaxial cable, the coaxial cable includes a core wire located at a center position, the upper pin includes a core wire mounting groove located at an upper end and extending downward in the axial direction and a spring mounting groove located at a lower end and extending upward in the axial direction, the lower pin includes an upper protrusion located at an upper end and extending upward in the axial direction and a test head located at a lower end at a center position and extending downward in the axial direction, the core wire of the coaxial cable is held by 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 detached from the spring mounting groove.

[0016] Further, the spring mounting groove is provided with a plurality of grooves along the axial direction from top to bottom, and the extension length of the grooves in the direction is less than the extension length of the spring mounting groove in the direction.

[0017] Further, the plurality of insulators include an upper insulator, the upper insulator mounts the upper pin to the upper shell, the upper insulator is sleeved on the outer periphery of the core wire mounting groove of the upper pin, the upper insulator is in interference fit with the outer periphery of the core wire mounting groove, and the upper shell, the upper insulator and the upper pin are fixed in position in the axial direction.

[0018] Further, the plurality of insulators include a lower insulator fixed in the lower shell, the outer periphery of the lower insulator is in interference fit with the inner surface of the lower shell, and the lower pin passes through the lower insulator downward and is in sliding fit with the lower insulator.

[0019] Further, the upper insulator limits the upward movement of the upper pin in the axial direction, and the lower insulator limits the downward movement of the lower pin in the axial direction.

[0020] Further, the surfaces of the upper shell and the lower shell are provided with clamping portions for clamping by tools such as wrenches.

[0021] Compared with the prior art, the test connector has the following advantages: since the shell of the test connector adopts the design of the detachable upper shell and lower shell, when the lower end of the lower shell is worn out after being connected with the switch connector during repeated use, the lower shell can be detached and replaced; since the center conductor also adopts the design of the detachable upper pin and lower pin, the design scheme of replacing the parts of the center conductor that are prone to wear is further provided, so that the purpose of replacing the test end parts of the test connector is achieved, and the entire test connector is avoided from being replaced and manufactured in large quantities, thereby effectively saving the cost during manufacturing and use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective assembly view of the test connector of the present application;

[0023] Figure 2 is a perspective exploded view of the test connector of the present application;

[0024] Figure 3 is a sectional view of the test connector of the present application in a free state;

[0025] Figure 4 is a sectional view of the test connector of the present application when testing a radio frequency switch;

[0026] Figure 5An assembled perspective view of a second embodiment of the test connector of the present invention;

[0027] Figure 6 An exploded perspective view of the second embodiment of the test connector of the present invention;

[0028] Figure 7 A sectional view of the second embodiment of the test connector of the present invention in a free state;

[0029] Figure 8 A sectional view of the second embodiment of the test connector of the present invention in a test radio frequency switch;

[0030] Figure 9 An assembled perspective view of a third embodiment of the test connector of the present invention;

[0031] Figure 10 An exploded perspective view of the third embodiment of the test connector of the present invention;

[0032] Figure 11 A sectional view of the third embodiment of the test connector of the present invention in a free state;

[0033] Figure 12 A sectional view of the third embodiment of the test connector of the present invention in a test radio frequency switch;

[0034] Figure 13 An assembled perspective view of a fourth embodiment of the test connector of the present invention;

[0035] Figure 14 An exploded perspective view of the fourth embodiment of the test connector of the present invention;

[0036] Figure 15 A sectional view of the fourth embodiment of the test connector of the present invention in a free state;

[0037] Figure 16 A sectional view of the fourth embodiment of the test connector of the present invention in a test radio frequency switch;

[0038] Figure 17 An assembled perspective view of a fifth embodiment of the test connector of the present invention;

[0039] Figure 18 An exploded perspective view of the fifth embodiment of the test connector of the present invention;

[0040] Figure 19 A sectional view of the fifth embodiment of the test connector of the present invention in a free state;

[0041] Figure 20 A sectional view of the fifth embodiment of the test connector of the present invention in a test radio frequency switch;

[0042] Figure 21 A perspective assembly view of a sixth embodiment of a test connector of the present application;

[0043] Figure 22 A perspective exploded view of a sixth embodiment of a test connector of the present application;

[0044] Figure 23 A sectional view of a sixth embodiment of a test connector of the present application in a free state;

[0045] Figure 24 A sectional view of a sixth embodiment of a test connector of the present application in a test radio frequency switch;

[0046] Figure 25 A perspective assembly view of a prior art radio frequency switch.

[0047] The meanings of the reference numerals in the drawings are as follows: test connector 100; radio frequency switch 200; outer housing 201; plastic body 202; movable terminal 204; outer threaded portion 301; inner threaded portion 302; coaxial cable T; core wire Tl; adapter radio frequency coaxial connector S; outer conductor 10; flange 1; fixing portion 11; accommodating spaces 12, 13; accommodating portion 14; lower hole portion 15; upper housing 2; upper cover portion 21; upper tube portion 22; first annular protrusion 23; slotted portion 231; lower tube portion 24; inner annular protrusion 25; second annular protrusion 26; upper segment portion 27; intermediate portion 28; lower segment portion 29; outer spring 31; inner spring 32; lower housing 4; abutting portion 41; center conductor 20; upper pin 5; core wire mounting slot 51; through hole 52; lower protrusion portion 53, 53'; upper boss portion 54; lower pin 6; test head 61; upper protrusion portion 62, 62'; tubular portion 63; fixing slot 64; needle portion 65; slotted portion 66; lower boss portion 67; upper insulator 71; lower insulator 72; plastic collar 73; plastic ring 74; spring mounting slot 81; slotted portion 82; compression ring 91; sleeve 92; clamping portion 93. DETAILED DESCRIPTION

[0048] For the purposes of promoting an understanding of the principles of the application, reference will now be made to the embodiments illustrated in the drawings. It is expressly understood that the drawings are presented for the purposes of illustration and teaching the best modes of practicing the application and nothing in the present disclosure is intended to be dedicated to the public regardless of whether these embodiments are eventually claimed. The best modes contemplated by the inventors for carrying out the application are shown in the drawings and will now be described in detail.

[0049] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is to be understood that the terms "approximately" and "substantially" are used herein to represent the insubstantial difference in the precision of a numerical value, a geometric shape, or a physical property between the claimed subject matter and the prior art. It is to be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "connected to" another element, it is either directly connected to the other element or intervening elements can be present.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0051] The present application is based on Figure 1 The X direction is the left-right direction (lateral direction), the Y direction is the front-rear direction (longitudinal direction), and the Z direction is the vertical direction (axial direction). In particular, in Figure 1 The flange 1 is above the lower housing 4 in the axial direction Z.

[0052] The present application is based on Figure 1 The X direction is the left-right direction (lateral direction), the Y direction is the front-rear direction (longitudinal direction), and the Z direction is the vertical direction (axial direction). In particular, in Figure 1 The flange 1 is above the lower housing 4 in the axial direction Z.

[0053] Please refer to Figures 1 to 25 The present application provides a test connector 100 for testing a radio frequency switch 200, which belongs to the coaxial connector. The test connector 100 extends along the axial direction Z as a whole, and defines a mounting end for mounting on a testing machine (not shown) and a test end away from the mounting end and for testing the radio frequency switch 200. The test end is a part that can be detached from the mounting end and replaced, so as to achieve the purpose of providing a new test connector 100.

[0054] The test connector 100 provided by the present application includes 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 Figure 25 As shown in the figure, the applicant discloses an existing radio frequency switch 200, which includes a housing 201, a plastic body 202 held in the housing 201, a static terminal (not shown), and a dynamic terminal 204. In general, the dynamic terminal 204 elastically abuts the static terminal (not shown) from bottom to top in the axial direction Z. When the test connector 100 provided by the present application tests the radio frequency switch 200, the lower end of the center conductor 20 extends into the interior of the radio frequency switch 100 and presses downward on the dynamic terminal 204, so as to separate the dynamic terminal 204 from the static terminal (not shown) and make the dynamic terminal 204 conductive with the center conductor 20, and at the same time, the outer conductor 10 abuts the upper end of the housing 201, so as to achieve the purpose of testing.

[0055] The outer conductor 10 and the center conductor 20 are both defined with a mounting end and a testing end. The outer conductor 10 includes a flange 1 located above in the axial direction Z and used for fixing on a testing 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 can be formed in a plane perpendicular to the axial direction Z, and a center position is used for fixing the upper shell 2 with a fixing part 11. The upper shell 2 and the lower shell 4 are in a cylindrical shape extending along the axial direction Z. The lower edge of the lower shell 4 is provided with a contact part 41 used for contacting the shell of the RF switch 200 downward. The lower end outer surface of the upper shell 2 is provided with an outer thread part 301, and the upper end inner surface of the lower shell 4 is provided with an inner thread part 302 matched with the outer thread part 301 of the upper shell 2, so that the upper shell 2 and the lower shell 4 can be mounted or dismounted by screwing.

[0056] The center conductor 20 is mounted at a center position inside the outer conductor 10 and arranged extending along the axial direction Z. The center conductor 20 includes an upper pin 5 located above in the axial direction Z and accommodated in the outer conductor 10, a lower pin 6 mounted 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 upper pin 4. The lower end of the lower pin 6 protrudes downward from the lower end edge of the outer conductor 10.

[0057] The several insulators include at least 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 shell 2, and the lower insulator 72 mounts the lower pin 6 in the lower shell 4.

[0058] Please refer to Figure 1 and Figure 2 The mounting end of the testing connector 100 is not only fixed on the testing machine (not shown) but also needs to be communicated with the testing machine (not shown) through at least one coaxial cable T to realize the testing function during the testing use. One end of the coaxial cable T is connected with the testing connector 100, and the other end is directly communicated with the testing machine (not shown) or communicated with the testing machine (not shown) through a switching RF coaxial connector S. The switching RF coaxial connector S is a prior art product, which will not be described in detail here. The coaxial cable T is a prior art product and includes a core wire T1 located at a center position, an inner insulating layer covering the outer core wire, a conductor layer covering the outer insulating layer, and a sheath layer covering the outer conductor layer. The core wire T1 at one end of the coaxial cable T is connected with the upper pin 5, and the core wire T1 at the other end is connected with the switching RF coaxial connector S.

[0059] Please refer to Figures 1 to 24 As shown in FIG. 1, the flange 1 of the outer conductor 10, the upper housing 2, the outer spring 31 and the upper insulator 71 are defined as the components of the mounting end of the test connector 100 of the present application, while the lower housing 4 of the outer conductor 10 and the upper pin 5, the lower pin 6, the inner spring 32 and the 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 application. The components of the test end are mounted and fixed with the components of the mounting end in the axial direction Z, but each component of the test end is designed to be detachable from the components of the mounting end.

[0060] Further, in the design that each component of the test end is detachable from the components of the mounting end, please refer to Figures 1 to 8 and Figures 17 to 24 As shown in FIG. 1, the upper pin 5 includes a core wire mounting groove 51 located at the upper end and extending downward in the axial direction Z, and a lower protruding portion 53 located at the central position of the lower end and extending downward in the axial direction Z. The opening of the core wire mounting groove 51 is upward and used for mounting the core wire T1 of the coaxial cable T, and the core wire mounting groove 51 is further provided with a through hole 52 penetrating the outer wall of the upper pin 5 at the position of the core wire mounting groove 51 to facilitate the fixation of the core wire T1 in the core wire mounting groove 51 by welding. The lower protruding portion 53 is used for downward cooperation with the top end of the lower pin 6, and the cross section of the lower protruding portion 53 perpendicular to the axial direction Z is smaller than that of the main body of the upper pin. The lower protruding portion 53 can be a boss structure or a tapered structure.

[0061] The lower pin 6 includes a spring mounting groove 81 located at the upper end and extending downward in the axial direction Z, and a test head 61 located at the central position of the lower end and extending downward in the axial direction Z. The opening of the spring mounting groove 81 is upward and used for accommodating the insertion or extraction of the inner spring 32 and the lower protruding portion 53 of the upper pin 5, so as to achieve the elastic movement of the lower pin 6 relative to the upper pin 5 in the axial direction Z. The test head 61 is used for abutting the movable terminal 204 of the radio frequency switch 200. The inner spring 32 abuts upwardly against the lower end of the upper pin 5 and provides elastic support for the lower pin 6 downwardly. The lower protruding portion 53 is inserted into the central space of the inner spring 32 to achieve the correct position of the cooperation among the upper pin 5, the inner spring 32 and the lower pin 6 when in use.

[0062] The applicant hereby emphasizes that the elastic support force provided by the inner spring 32 for the lower pin 6 downwardly is greater than the downward pressure required for the movable terminal 204 of the radio frequency switch 200 to move away from the static terminal (not shown). That is, during the process that the test head 61 of the lower pin 6 abuts and presses downwardly the movable terminal 204 of the radio frequency switch 200 until the movable terminal 204 is separated from the static terminal (not shown), the inner spring 32 does not reach the compression limit and does not appear the situation of elastic failure, so as to reset the lower pin 6 after it is removed from the movable terminal 204.

[0063] Since the upper pin 5 is held by the upper insulator 71 in the upper housing 2, and the lower pin 6 is held by the lower insulator 72 in the lower housing 4, and since the lower housing 4 can be detached from the upper housing 2, the purpose of replacing the lower housing 2, the lower pin 6, the lower insulator 72, the inner spring 32 and the upper pin 5 which can be worn out, i.e. replacing the testing end of the testing connector 100 of the present application, can be achieved, so as to reduce the cost.

[0064] Further, the cooperation between the upper pin and the lower pin of the testing connector of the present application can also be as follows: please refer to Figures 13 to 16 As shown in the figure, the upper end of the upper pin 5 is provided with a core wire installation slot 51 for installing the core wire T1 of the coaxial cable T, and the lower end is provided with a spring installation slot 81 extending upward along the axial direction Z. The upper end of the lower pin 6 is provided with an upper protruding part 62 extending upward along the axial direction Z at the center position, and the lower end is provided with a testing head 61 extending downward along the axial direction Z at the center position. The inner spring 32 is accommodated in the spring installation slot 81 of the upper pin 5, and the upper protruding part 62 of the lower pin 6 is inserted upward or separated downward from the lower end of the spring installation slot 81. The upper protruding part 62 is inserted into the central space of the inner spring 32 to achieve the correct position of the cooperation between the upper pin 5, the inner spring 32 and the lower pin 6 in use.

[0065] Further, the cooperation between the upper pin and the lower pin of the testing connector of the present application can also be as follows: please refer to 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 is provided with a lower protruding portion 53'. The lower pin 5 includes a tubular portion 63 located above in the axial direction Z and a pin-shaped portion 65 located below the tubular portion 63. The tubular portion 63 is separately provided from the pin-shaped portion 65. The upper end of the tubular portion 63 is provided with a fixing groove 64 accommodating the upper protruding portion 53' and in interference fit with the upper protruding portion 53', and the lower end of the tubular portion 63 is provided with a spring installation groove 81 accommodating the inner spring 32. The pin-shaped portion 65 includes an upper protruding portion 62' provided at the upper end and a test head 61 located at the lower end. The lower protruding portion 53' of the upper pin 5 and the fixing groove 64 of the tubular portion 63 are in detachable structure. The upper protruding portion 62' of the pin-shaped portion 65 is inserted into the spring installation groove 81 of the tubular portion 63 and is in sliding fit, and the inner spring 32 provides the pin-shaped portion 65 with elastic support force in the downward direction of the axial direction Z. The upper protruding portion 53' is inserted into the central space of the inner spring 32 to keep the positions of the tubular portion 63, the inner spring 32 and the pin-shaped portion 65 correct when in use. The fixing groove 64 of the tubular portion 63 further includes a plurality of grooves 66 from top to bottom in the axial direction Z. The extension length of the grooves 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 grooves 66 is flexible and can better cooperate with the lower protruding portion 53'.

[0066] In summary, the arrangement mode of the upper pin 5, the lower pin 6 and the inner spring 32 is not unique, and can be changed according to specific use conditions, and all can achieve the implementation mode that the upper pin 5 and the lower pin 6 are elastically supported and disassembled in at least three modes while meeting the abutting of the lower pin 6 and the movable terminal 204 of the RF switch 200 to realize the test function.

[0067] Please refer to Figures 1 to 24 As shown, in some embodiments of the present application, 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 grooves 82 from top to bottom in the axial direction Z. The extension length of the grooves 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 grooves 82 is flexible, and when the inner spring 32 and the protruding portions of the upper pin 5 or the lower pin 6 are inserted, the inner spring 32 and the upper pin 5 or the lower pin 6 can smoothly slide with the spring installation groove 81 in the use process, avoiding the phenomenon of jamming.

[0068] Please refer to Figures 9 to 20As shown, further, since the upper insulator 71 installs the upper pin 5 to the upper housing 2, the upper pin 5 is fixed in the axial direction Z relative to the upper housing 2. The core wire installation groove 51 of the upper pin 5, after installing the core wire T1 of the coaxial cable T, sets the upper insulator 71 on the outer periphery of the core wire installation groove 51 and fixes it integrally in the upper housing 2. The upper insulator 72 is in interference fit with the outer periphery of the upper pin 5 at the core wire installation groove 51, and the outer periphery of the upper insulator 71 is in interference fit in the upper housing 2, so that the three are fixed firmly and are not easy to separate.

[0069] 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 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 the core wire installation groove 51, so that the upper boss portion 54 is upwardly abutted against the upper insulator 71.

[0070] In some embodiments of the present application, please refer to Figures 1 to 8 As shown, the upper insulator 71 is installed above or at the upper end of the upper housing 2, and is close to the installation end side. In the design of the upper limit of the upper insulator 71 upwardly, the way of pressing ring 91 can be used to abut downwardly on 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 fixing accuracy and stability of the central position of the upper pin 5 in the upper housing 2, a plastic sleeve ring 73 is arranged in the insulator, the plastic sleeve ring 73 is sleeved on the end of the upper pin 5 away from the core wire installation groove 51, and the plastic sleeve ring 73 is in interference fit with the upper pin 5, and the plastic sleeve ring 71 can slide up and down in the axial direction Z in the upper housing 2. At this time, the length of the coaxial cable T extending into the upper housing 2 is relatively short.

[0071] Please refer to Figures 9 to 20 As shown, in some other embodiments of the present application about the upper insulator 71, the upper insulator 71 is installed in the lower end of the upper housing 2, that is, away from the installation end side. The inner side of the lower end of the upper housing 2 (or the lower tube portion 24) forms a stepped structure, and the upper insulator 71 is abutted upwardly on the stepped surface of the stepped 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 relatively short, and the length of the coaxial cable T extending into the upper housing 2 is relatively long.

[0072] Please refer to Figures 1 to 24As shown, further, the lower insulator 72 is fixed in the lower housing 4, the outer periphery of the lower insulator 72 is in interference fit with the inner surface of the lower housing 4, and the lower insulator 72 is fixed in the axial direction Z relative to the lower housing 4. The purpose of the lower insulator 72 is to allow the test head of the lower pin 6 to pass through and be in sliding fit 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 abuts against the upper end of the lower insulator 72 downward.

[0073] Further, the design of the fixing manner of the flange 1 and the upper housing 2 can be divided into two types: the flange 1 and the upper housing 2 are fixed in the axial direction Z, and the flange 1 and the upper housing 2 are in sliding fit in the axial direction Z. Please refer to Figures 1 to 4 As shown, in the embodiment in which the flange 1 and the upper housing 2 are fixedly installed, the fixing portion 11 of the flange 1 includes a receiving space 12 at the upper end and a lower hole portion 15 at the lower end and in communication with the receiving space 12. 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 downward on the bottom of the receiving space 12 and abuts against the upper end of the upper housing 2 downward, and the upper housing 2 is installed upward in the lower hole portion 15 and abuts against the lower end of the upper insulator 71 upward. The core wire installation groove 51 of the upper pin 5 is fixed in the upper insulator 71 and is fixed with the core wire T1 of the coaxial cable T. The test connector 100 further includes a compression ring 91 for being fixed in the receiving space 12 from top to bottom and abutting against the upper insulator 71 downward.

[0074] In the embodiment in which the flange 1 and the upper housing 2 are in sliding fit from top to bottom, please refer to Figures 5 to 8 As shown, the upper housing 2 includes a limiting structure at the top end, which can be that the upper end of the upper housing 2 is provided with a receiving portion 14 gradually expanding from bottom to top, and the upper housing 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 abuts against the upper end of the fixing portion 11 downward to achieve the purpose of limiting. Since the lower end of the receiving portion 14 is conical, it can effectively avoid the jamming of the upper housing 2 and the flange 1 when they are in sliding fit from top to bottom. The receiving portion 14 is provided with a receiving space 13, the upper insulator 71 holds the core wire installation groove 51 of the upper pin 5 and the upper pin 51 is inserted into the receiving space 13 of the upper housing 2 from top to bottom as a whole. At this time, the upper insulator 71 abuts against the lower end of the receiving space 13 downward, and the compression ring 91 is fixed in the receiving space 13 from top to bottom and abuts against the upper insulator 71 downward.

[0075] Further, in other embodiments in which the flange 1 and the upper shell 2 are slidably matched, please refer to Figures 21 to 24 As shown, the limiting structure at the top of the upper housing 2 can also be a screw sleeve 92 further provided in the test connector 100 of the present invention. 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 housing 2 passes through the opening of the fixing portion 11 of the flange 1, and the upper end of the upper housing 2 is threadedly fixed to the screw sleeve 92, so that the screw sleeve 92 can downwardly abut the upper end of the fixing portion 11 to achieve the purpose of downward limiting.

[0076] Further, in other embodiments in which the flange 1 and the upper shell 2 are slidably matched, please refer to Figures 9 to 20 As shown, the limiting structure at the top of the upper shell 2 can also be provided with an upper cover portion 21 at the top of the upper shell 2, 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 downwardly abutted against the upper end of the fixing portion 11 to achieve the purpose of downward limiting.

[0077] To achieve the purpose of securing the outer spring 31 between the flange 1 and the upper housing 2, the present invention proposes different implementation methods for two scenarios: one in which the flange 1 and the upper housing 2 are fixed to each other, and the other in which the flange 1 and the upper housing 2 slide up and down relative to each other. It should be noted that the outer spring 31 abuts upward against the lower end of the flange 1 and downward against a protrusion formed by the outwardly protruding cross-section of the outer circumferential surface of the upper housing 2 along the axial direction Z, thereby providing elastic support between the flange 1 and the upper housing 2.

[0078] 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 housing 2 comprises an upper tube portion 22 and a lower tube portion 24 which is slidingly fitted with the upper tube portion 22. The periphery of the lower end of the upper tube portion 22 is outwardly protruded along the cross section perpendicular to the axial direction Z to form a first annular protrusion 23 and a plurality of slits 231 which extend upward along the axial direction Z. The lower end of the upper tube portion 22 is provided with the slits 231 so that the lower end of the upper tube portion 22 is flexible, facilitating the installation and fixation with the lower tube portion 24. The inner diameter of the lower tube portion 24 is greater than the first annular protrusion 23. The inner side periphery of the upper end of the lower tube portion 24 is inwardly protruded along the cross section perpendicular to the axial direction Z to form an inner annular protrusion 25. The lower end of the lower tube portion 24 is provided with an outer threaded portion 301 which is fitted with the inner threaded portion 302 of the upper end of the lower housing 6. As viewed along the axial direction Z, the first annular protrusion 23 and the inner annular protrusion 25 are arranged in an overlapping manner. Therefore, the upper tube portion 22 is first passed through the lower tube portion 24 from bottom to top, then the outer spring 31 is sleeved on the outer side of the upper tube portion 22 from top to bottom, and then the upper end of the upper tube portion 22 is fixed in the aperture of the fixing portion 11 of the flange 1. At this time, the outer spring 31 is upwardly abutted against the lower end of the fixing portion 11 of the flange 1 and downwardly abutbed against the upper end of the lower tube portion 24, so that the lower tube portion 24 can be elastically slid up and down relative to the flange 1 along the axial direction Z. The upper end of the lower tube portion 24 can be regarded as a protruding structure of the outer peripheral surface of the upper housing 2.

[0079] In the embodiment in which the flange 1 and the upper housing 2 are slidingly fitted with each other, the upper housing 2 can be an integral component; or can comprise an upper tube portion 22 and a lower tube portion 24 which is fixedly fitted with the upper tube portion 22. The fixing manner of the upper tube portion 22 and the lower tube portion 24 can comprise riveting or threaded fixation. The upper end of the upper housing 2 or the upper tube portion 22 is downwardly abutted against the upper end of the fixing portion 11 through one of the above-mentioned embodiments such as the accommodating portion 14, the threaded sleeve 92 or the upper cover portion 21, so as to achieve the downward limiting effect.

[0080] Further, in the embodiment in which the upper housing 2 is an integral component, please refer to Figures 21 to 24As shown, the upper housing 2 comprises an upper section 27, a middle section 28 and a lower section 29 arranged from top to bottom. The middle section 28 has a cross section perpendicular to the axial direction Z 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 thread 301 cooperating with an internal thread 302 at the upper end of the lower housing 4. First, the external spring 31 is arranged around the outside of the upper section 27 of the upper housing 2 from top to bottom, and then the upper section 27 of the upper housing 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 abut against the upper end of the fixing portion 11 downward to limit the downward movement. At this time, the external spring 31 abuts against the lower end of the fixing portion 11 of the flange 1 upward and against the middle section 28 of the upper housing 2 downward, so that the upper housing 2 as a whole elastically slides up and down relative to the flange 1 in the axial direction Z. The middle section 28 of the lower tube portion 22 can be regarded as a protruding structure of the outer peripheral surface of the upper housing 2.

[0081] Further, in the embodiment in which 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 fixed by riveting. The upper end of the lower tube portion 24 is provided with a second annular protrusion 26 protruding outward in the cross section perpendicular to the axial direction Z, and the lower end of the lower tube portion 24 is provided with an external thread 301 cooperating with an internal thread 302 at the upper end of the lower housing 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 embodiment to abut against the upper end of the fixing portion 11 downward to limit the downward movement. 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 external spring 31 is arranged around the outside of the upper tube portion 22 from bottom to top, and then the lower tube portion 24 and the upper tube portion 22 are riveted; or in other embodiments, first, the lower tube portion 24 and the upper tube portion 22 can be riveted, and then the external spring 31 is arranged around the outside of the upper tube portion 22 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 top to bottom. At this time, the external spring 31 abuts against the lower end of the fixing portion 11 of the flange 1 upward and against the upper end of the second annular protrusion 26 of the lower tube portion 24 downward, so that the upper tube portion 22 and the lower tube portion 24 can jointly elastically slide up and down relative to the flange 1 in the axial direction Z as a whole (i.e. the upper housing 2). The second annular protrusion 26 of the lower tube portion 22 can be regarded as a protruding structure of the outer peripheral surface of the upper housing 2.

[0082] Further, in the embodiment in which the upper tube portion 22 and the lower tube portion 24 are fixed by riveting, please refer toFigures 9 to 20 As shown, the lower end of the upper tube part 22 is provided with an outer threaded part 301, and the lower tube part 24 comprises 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 inner threaded part 302 cooperating with the outer threaded part 301 of the lower end of the upper tube part 22, the middle section 28 connects the upper section 27 and the lower section 29, and the lower section 29 is provided with an outer threaded part 301 cooperating with the inner threaded part 302 of the upper end of the lower housing 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 part 22. The upper end of the upper tube part 22 can be one of the accommodating part 14, the screw sleeve 92 or the upper cover part 21 in the above embodiments to achieve the function of downward abutting against the upper end of the fixing part 11 to achieve downward limiting. When the upper end of the upper tube part 22 is one of the accommodating part 14 or the upper cover part 21 in the above embodiments, first, the upper tube part 22 is passed 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 part 22 from bottom to top, and then the upper section 27 of the lower tube part 24 is fixed with the lower end of the upper tube part 22 by screwing. When the upper end of the upper tube part 22 cooperates with the screw sleeve 92 in the above embodiments, the upper section 27 of the lower tube part 24 can be first fixed with the lower end of the upper tube part 22 by screwing, then the outer spring 31 is sleeved on the outer side of the upper tube part 11 from top to bottom, and then the upper tube part 22 is passed through the opening of the fixing part 11 of the flange 1 from bottom to top. At this time, the outer spring 31 abuts against the lower end of the fixing part 11 of the flange 1 upwardly and abuts against the upper end of the upper section 27 of the lower tube part 24 downwardly, so that the upper tube part 22 and the lower tube part 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 housing 2). The upper section 27 of the lower tube part 24 can be regarded as a protruding structure of the outer peripheral surface of the upper housing 2.

[0083] The outer threaded part 301 and the inner threaded part 302 cooperating with the outer threaded part 301 mentioned in the present application are not the only definition, and the positions of the outer threaded part 301 and the inner threaded part 302 can be alternatively set. In addition to using the threaded mode to fix the lower housing 4 and the upper housing 2, glue, epoxy resin and other materials can also be used to achieve the fixing effect.

[0084] Further, please refer to Figures 9 to 20As shown, in order to ensure smooth sliding between the upper housing 2 and the flange 1 and reduce the wear between the two, prolong the service life of the two, the test connector 100 of the present application can further comprise a plastic ring 74. The plastic ring 74 is located in the opening of the fixed part 11. The outer periphery of the plastic ring 74 is in interference fit with the inner surface of the opening of the fixed part 11 to achieve the fixing effect. The upper housing 2 and the plastic ring 74 are in sliding fit from top to bottom. In some embodiments, the outer spring 31 can be upwardly abutted against the lower end of the plastic ring 74, reducing the wear between the flange 1 and the outer spring 31.

[0085] Please refer to Figures 1 to 24 As shown, in specific use, the test connector 100 is installed on the detection machine (not shown) through the flange 1, and the other end of the coaxial cable T is connected to the detection machine (not shown). First, the test connector 100 is aligned with the radio frequency switch 200 in the axial direction Z, and then the test connector 100 is moved downward; during the downward movement, the test head 61 of the lower pin 6 first contacts the movable terminal 204 of the radio frequency switch 200 downward, and in this process, the movable terminal 204 is pressed downward, and at the same time, the abutting part 41 of the lower housing 4 contacts the outer housing 201 of the radio frequency switch 200; the test connector 100 continues to move downward, the movable terminal 204 is separated from the static terminal (not shown) under the downward pressure of the test head 61, the inner spring 32 is compressed in the axial direction Z, the test head 61 moves upward relative to the upper pin 5, and the lower housing 4 drives the upper housing 2 as a whole, or the upper tube part 22 and the lower tube part 24 form a whole, or the lower tube part 24 compresses the outer spring 31 upward and moves upward relative to the flange 1, at the same time, the movable terminal 204 is connected to the core wire T1 of the coaxial cable T through the center conductor 20, and data detection is performed by the detection machine (not shown). After the detection is completed, the test connector 100 is moved upward until the test connector 100 is separated from the radio frequency switch 200, in this process, the outer spring 31 resets the upper housing 2 and the lower housing 4 as a whole downward, and the inner spring 32 resets the lower pin 6 as a whole, thereby achieving reciprocating use. 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 periphery of the upper pin 5, and the abutting part 41 of the lower housing 4 will be worn out, at this time, the lower housing 4 and the upper housing 2 (or the lower tube part 24) are separated, the upper pin 5, the lower pin 6, the lower housing 4, and the lower insulator 72 can be replaced, and after reassembly, the test connector 100 can be used continuously.

[0086] When the upper pin 5 is replaced, the upper pin 5 needs to be separated from the upper insulator 71, the coaxial cable T is cut at the connection with the upper pin 5, the core wire T1 is cut and passed through the upper insulator 71, a new upper pin 5 is replaced, the core wire T1 is re-welded and fixed with the upper pin 5, and the upper pin 5 is installed back into the upper insulator 71, so as to be used repeatedly. It should be pointed out that generally, the length of the coaxial cable T is sufficient, and the new upper pin 5 can be replaced repeatedly, so as to avoid unnecessary waste and effectively save the cost.

[0087] In order to facilitate disassembly of the lower shell 4, the surfaces of the upper shell 2 and the lower shell 4 are provided with clamping portions 93 for clamping tools such as wrenches. The clamping portions 93 form a pair of corresponding clamping surfaces on the surfaces of the upper shell 2 (or the upper pipe portion 22) and the lower shell 4, respectively. When the lower shell 4 needs to be disassembled, two tools such as wrenches are used to clamp the clamping portions 93 of the upper shell 2 (or the upper pipe portion 22) and the lower shell 4, respectively, the upper shell 2 is clamped and kept stationary, the direction of rotating the lower shell 4 is opposite to that of the upper shell, and then the lower shell 4 can be disassembled. Keeping the upper shell 2 stationary can avoid excessive rotation of the upper shell 2 and damage the components in the test connector 100.

[0088] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0089] The above embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A test connector comprising an outer conductor, a center conductor retained within the outer conductor, and a plurality of insulators, wherein the outer conductor and the center conductor are spaced apart from each other, the outer conductor comprising a flange extending from top to bottom in an axial direction, a housing mounted on the flange, and an external spring supported between the flange and the housing in the axial direction, the housing moving in the axial direction relative to the flange, characterized in that: The housing comprises an upper housing whose upper end is mounted on the flange and a detachable lower housing mounted on the lower end of the upper housing; The central conductor is installed at the center position inside the outer conductor and extends along the axial direction. The central conductor includes an upper pin located above in the axial direction and accommodated in the outer conductor, a lower pin installed below the upper pin, and an inner spring supported between the upper pin and the lower pin in the axial direction. The lower pin can be removed from below the upper pin. The several insulators include an upper insulator, which installs the upper pin on the upper shell. 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. The upper shell, upper insulation and upper pin are fixed in relative position in the axial direction.

2. The test connector according to claim 1, wherein: The upper shell and the lower shell are cylindrical structures extending along the axial direction.

3. The test connector according to claim 1, wherein: The lower end of the upper shell is fixed to the upper end of the lower shell by means of threads.

4. The test connector according to claim 1, wherein: The lower end of the central conductor protrudes downward from the lower end edge of the outer conductor.

5. The test connector according to claim 1, wherein: The test connector is connected to a coaxial cable, which includes a core wire located in the center. 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. The core wire of the coaxial cable is fixed in the core wire mounting groove.

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

7. The test connector according to claim 5, wherein: 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, wherein: 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, wherein: 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 axial direction is smaller than an extension length of the fixing groove of the tubular portion in the axial direction.

10. The test connector according to claim 1, wherein: 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 removed from 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 from top to bottom along the axial direction, and the extension length of the slots in the direction is smaller than the extension length of the spring installation slot in the direction.

12. The test connector according to claim 1, wherein: The plurality of insulators include a lower insulator fixed in the lower shell, the outer periphery of the lower insulator is interference-fitted with the inner surface of the lower shell, and the lower pin passes downward through the lower insulator and is slidingly fitted with the lower insulator.

13. The test connector according to claim 12, wherein: 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.

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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