High-performance Mini FAKRA connector

Abstract

The utility model discloses a high-performance Mini FAKRA connector, which comprises a female end connector, the female end connector comprises a female end outer conductor which is integrally formed and seamless, a first bulge is formed on the outer surface of the female end outer conductor, and a groove structure is not arranged at the position, corresponding to the first bulge, of the inner surface of the female end outer conductor; the elastic outer conductor is fixed at the front end of the female end outer conductor; the female end insulator is arranged in the female end outer conductor and the elastic outer conductor in a penetrating manner; the central conductor female pin is arranged in the female end insulator in a penetrating manner; the end part of the female end coaxial line is stripped from the first outer sheath to expose the first shielding woven mesh and the first inner insulating layer; the first inner insulating layer is arranged in the female end outer conductor in a penetrating manner, and the first shielding woven mesh wraps the outer surface of the female end outer conductor; and the front end of the first metal ring is riveted and fixed on the outer surface of the female end outer conductor and clamps the first shielding woven mesh, and the rear end of the first metal ring is also riveted and fixed on the first jacket of the female end coaxial line.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a high-performance Mini FAKRA connector. Background technology:

[0002] The main supporting fields of electrical connectors include transportation, communications, networks, IT, medical treatment, home appliances, military electronic products, etc. The rapid development of the technical level of supporting products and the rapid growth of the market have strongly driven the development of connector technology. So far, electrical connectors have developed into a series of professional products with a complete range of products, rich varieties and specifications, diverse structural types, subdivided professional directions, obvious industry characteristics, and standardized standard systems.

[0003] The Mini FAKRA connector is a well-known standard connector in the automotive electronics industry. In order to meet universality, the interface standard of the connector is standardized.

[0004] See also Figure 1-2 As shown, it is a Mini FAKRA connector on the market, which includes an outer conductor 101, an insulator 102 inserted into the outer conductor 101, a center conductor 103 inserted into the insulator 102, and a coaxial line 107 electrically connected to the center conductor 103, wherein the outer conductor 101 is formed by stamping and wrapping, so that the outer conductor 101 has a wrapping seam 104. Due to the existence of the wrapping seam 104, the mechanical strength of the entire outer conductor 101 is not high, and the shielding performance is insufficient; the outer surface of the outer conductor 101 is formed with a protrusion 105, and correspondingly, the inner surface of the outer conductor 101 is formed with a groove 106 at a position corresponding to the protrusion 105, and the groove 106 will affect the high-frequency performance of the product. In addition, the outside of the coaxial line 107 is fixed by riveting a metal hoop 108, and the metal hoop 108 is also inserted into the outer conductor 101, and the rear end of the outer conductor 101 is riveted to clamp the metal hoop 108. The riveting tensile strength of this assembly method is difficult to ensure, and when the riveting pressure is too large, it will affect the size of the internal insulator, seriously affecting the high-frequency performance.

[0005] In view of this, the inventor proposes the following technical solution. Utility model content:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-performance Mini FAKRA connector.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: the high-performance Mini FAKRA connector includes a female connector, which includes: an integrally formed and seamless female outer conductor, a first protrusion is formed on the outer surface of the female outer conductor, and there is no groove structure at the position corresponding to the first protrusion on the inner surface of the female outer conductor; an elastic outer conductor, which is fixed to the front end of the female outer conductor; a female insulator, which is inserted into the female outer conductor and the elastic outer conductor; a center conductor female needle, which is inserted into the female insulator; a female coaxial line, the end of which is stripped of the first outer sheath to reveal the first shielding braided mesh and the first inner insulating layer; the first inner insulating layer is inserted into the female outer conductor, and the first shielding braided mesh is wrapped around the outer surface of the female outer conductor; a first metal ring, the front end of which is riveted and fixed to the outer surface of the female outer conductor and clamps the first shielding braided mesh, and the rear end of the first metal ring is also riveted and fixed to the first outer sheath of the female coaxial line.

[0008] Further, in the above technical solution, the female end outer conductor is provided with a front inner hole, a middle inner hole and a rear inner hole whose apertures gradually decrease and whose inner walls have no groove structure along its front end backward, the rear end of the elastic outer conductor is passed through and positioned in the front inner hole, and the rear end surface of the elastic outer conductor abuts against the first step surface formed between the front inner hole and the middle inner hole; an annular groove is arranged on the outer periphery of the rear side of the elastic outer conductor, and the front end of the front inner hole of the female end outer conductor is embedded in the annular groove from the outside to the inside through a rivet ring formed by 360° ring rivets for a tight fit.

[0009] Furthermore, in the above technical solution, a plurality of strip-shaped holes are formed at the front end of the elastic outer conductor, an elastic arm is formed between two adjacent strip-shaped holes, and an elastic convex bump protruding outward is formed on the elastic arm.

[0010] Further, in the above technical solution, the rear end of the female insulator is passed through the middle inner hole, and the rear end of the female insulator abuts against the second step surface formed between the middle inner hole and the rear inner hole; the first inner insulating layer of the female coaxial line is passed through the rear inner hole; the front end of the female insulator has a first center hole for the center conductor female needle to pass through and install, and the front end of the first center hole has a funnel-shaped guide opening; a first air avoidance groove is arranged on the periphery of the middle part of the female insulator, an air gap is formed between the first air avoidance groove and the elastic outer conductor, and a first through groove penetrating the first center hole is opened in the rear part of the female insulator, the first barb formed on the outside of the center conductor female needle is embedded in the first through groove for axial locking, and a first flange is arranged at the tail of the center conductor female needle, and the first flange is clamped and limited by the first limit groove at the rear end of the first center hole.

[0011] Furthermore, the above technical solution also includes a male connector that is plugged into and connected to the female connector, and the male connector includes: an integrally formed and seamless male outer conductor, a second protrusion is formed on the outer surface of the male outer conductor, and there is no groove structure on the inner surface of the male outer conductor corresponding to the second protrusion; a male insulator, which is inserted into the male outer conductor, and a slot for plugging with the female connector is formed between the front end of the male insulator and the inner wall of the front end of the male outer conductor; a central conductor male pin, which is inserted into the male The insulator has the front end of the center conductor male needle exposed in the pair of slots; the male coaxial line, the end of the male coaxial line is stripped of the second outer sheath to expose the second shielding braided mesh and the second inner insulating layer; the second inner insulating layer is passed through the male outer conductor, and there is no cavity between them; the second shielding braided mesh is wrapped around the outer surface of the male outer conductor; the second metal ring, the front end of which is riveted and fixed to the outer surface of the male outer conductor, and the second shielding braided mesh is clamped, and the rear end of the second metal ring is also riveted and fixed to the second outer sheath of the male coaxial line.

[0012] Furthermore, the above technical solution also includes a male connector that is plugged into and connected to the female connector, and the male connector includes: an integrally formed and seamless male outer conductor, a second protrusion is formed on the outer surface of the male outer conductor, and there is no groove structure on the inner surface of the male outer conductor corresponding to the second protrusion; a male insulator, which is inserted into the male outer conductor, and a mating slot for mating with the female connector is formed between the front end of the male insulator and the inner wall of the front end of the male outer conductor; a center conductor male pin, which is inserted into the male insulator, and the front end of the center conductor male pin is exposed in the mating slot, and the center conductor male pin is formed with a pin portion for assembly with a PCB board, and the pin portion extends out of the male insulator.

[0013] Furthermore, in the above technical solution, the male end insulator has a second center hole for the center conductor male needle to pass through and install; the second barb formed on the outside of the center conductor male needle is clamped and positioned with the inner wall of the second center hole, and the tail of the center conductor male needle is provided with a second flange, and the second flange is clamped and limited with the second limit groove at the rear end of the second center hole.

[0014] Furthermore, in the above technical solution, the front end of the male insulator is also formed with an inserting portion that can be inserted into the front end of the elastic outer conductor, the front end of the center conductor male needle extends out of the front end of the inserting portion, and a guiding surface is arranged on the periphery of the end of the inserting portion; a third step surface is arranged in the male outer conductor, the rear end surface of the male insulator abuts against the third step surface, and a positioning groove is formed on the periphery of the male insulator, and the male outer conductor is provided with a rivet protrusion, which is pressed into the positioning groove to lock the male insulator.

[0015] Furthermore, in the above technical solution, a first grid-shaped protrusion is formed on the outer surface of the rear end of the female outer conductor, and the first shielding braided mesh is wrapped on the first grid-shaped protrusion; a second grid-shaped protrusion is formed on the outer surface of the rear end of the male outer conductor, and the second shielding braided mesh is wrapped on the second grid-shaped protrusion.

[0016] Further, in the above technical solution, at least one of the female connectors is inserted into the female plastic sheath, the female coaxial line extends out of the rear end of the female plastic sheath, a female lock seat is inserted into the female plastic sheath, and a first locking portion on the female lock seat abuts against a first protrusion for locking; at least one of the male connectors is inserted into the male plastic sheath, and a socket space for inserting the female plastic sheath is formed between the front end of the male connector and the male plastic sheath; the male coaxial line extends out of the rear end of the male plastic sheath, a locking arm is formed on the male plastic sheath, the locking arm abuts against a second protrusion for locking, and a male lock seat is inserted into the male plastic sheath, and a second locking portion on the male lock seat abuts against a second protrusion for secondary locking; an elastic unlocking handle is provided on the female plastic sheath, and a mating lock buckle is formed on the elastic unlocking handle; a lock hole adapted to the mating lock buckle is provided on the male plastic sheath.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0018] 1. Since the female end outer conductor in the female end connector is an integrally formed and seamless structure, it has good mechanical strength and can enhance the quality of the entire female end connector. At the same time, the outer surface of the female end outer conductor is formed with a first protrusion, and the inner surface of the female end outer conductor has no groove structure corresponding to the first protrusion, that is, the inner surface of the female end outer conductor has good overall smoothness, good impedance continuity, and excellent high-frequency performance. The male end connector also has the characteristics of the female end connector.

[0019] 2. The female connector uses the first metal ring to fix the female outer conductor and the female coaxial line together, and also presses and positions the first shielding braided mesh of the female coaxial line. Its structure is stable and has good tensile strength. The riveting pressure of the first metal ring is absorbed by the female outer conductor, which does not affect the size and shape of the internal female insulator and the center conductor female needle, making the product have good high-frequency characteristics. The male connector also has the characteristics of the female connector. Description of the drawings:

[0020] Figure 1 It is a three-dimensional exploded view of a Mini FAKRA connector (female end) in the prior art;

[0021] Figure 2 It is a cross-sectional view of a Mini FAKRA connector (female end) in the prior art;

[0022] Figure 3 It is a three-dimensional diagram of the first embodiment of the utility model;

[0023] Figure 4 It is a stereogram of the female connector in the first embodiment of the utility model;

[0024] Figure 5 It is a three-dimensional diagram of the male connector in the first embodiment of the utility model;

[0025] Figure 6 It is a three-dimensional exploded view of the female connector in the first embodiment of the utility model;

[0026] Figure 7 It is a cross-sectional view of the female connector in the first embodiment of the utility model;

[0027] Figure 8 It is a three-dimensional exploded view of the male end connector in the first embodiment of the utility model;

[0028] Fig. 9 It is a cross-sectional view of the male connector in the first embodiment of the utility model;

[0029] Fig.10 It is a three-dimensional diagram of the female end insulator in the first embodiment of the utility model;

[0030] Fig.11 It is a three-dimensional diagram of the male end insulator in the first embodiment of the utility model;

[0031] Fig.12 It is an assembly diagram of the male end connector and the male end plastic sheath in the first embodiment of the utility model;

[0032] Fig.13 It is an assembly diagram of the female connector and the female plastic sheath in the first embodiment of the utility model;

[0033] Fig.14 It is an assembly diagram of the male and female connectors and the male and female plastic sheaths in the first embodiment of the utility model;

[0034] Fig.15 It is a cross-sectional view of the assembly of the male and female connectors and the male and female plastic sheaths in the first embodiment of the utility model;

[0035] Fig.16 It is a cross-sectional view of the first embodiment of the utility model;

[0036] Fig.17 This is a front view of a single-head male connector assembled in Embodiment 1 of the utility model;

[0037] Fig.18 This is a front view of a double-ended male connector assembled in Embodiment 1 of the utility model;

[0038] Fig.19 This is a front view of a four-head male connector assembled in Embodiment 1 of the utility model;

[0039] Fig. 20 This is a front view of a single-head female connector assembled in Embodiment 1 of the utility model;

[0040] Fig.21 This is a front view of a double-ended female connector assembled in Embodiment 1 of the utility model;

[0041] Fig. 22 This is a front view of a four-pin female connector assembled in Embodiment 1 of the utility model;

[0042] Fig.23 It is an assembly diagram of the male end connector and the male end plastic sheath in the second embodiment of the utility model;

[0043] Fig.24 It is an assembly diagram of male and female connectors and male and female plastic sheaths in the second embodiment of the present utility model. Specific implementation method:

[0044] The utility model is further described below in conjunction with specific embodiments and drawings.

[0045] Embodiment 1:

[0046] See also Figure 3-Figure 22 , is a high-performance Mini FAKRA connector, which includes a female connector 100 and a male connector 700 that is plugged into and connected to the female connector 100, and the female connector 100 and the male connector 700 can be pulled out of each other to separate. The female connector 100 and the male connector 700 can be extended and matched coaxial connectors.

[0047] The specific structure of the female connector 100 is first described below.

[0048] The female connector 100 comprises: a female outer conductor 1 , an elastic outer conductor 2 , a female insulator 3 , a central conductor female needle 41 , a first metal ring 51 and a female coaxial line 61 .

[0049] The female end outer conductor 1 is an integrally formed seamless structure. For example, the female end outer conductor 1 is formed by turning a metal plate, or the female end outer conductor 1 is formed by stamping and stretching a metal tube.

[0050] Since the female end outer conductor 1 is an integrally formed and seamless structure, it has good mechanical strength and can enhance the quality of the entire female end connector 100. At the same time, the outer surface of the female end outer conductor 1 is formed with a first protrusion 11, and the inner surface of the female end outer conductor 1 corresponding to the position of the first protrusion 11 has no groove structure, that is, the inner surface of the female end outer conductor 1 has good overall smoothness, good impedance continuity, and excellent high-frequency performance. More specifically, the female end outer conductor 1 is provided with a front inner hole 12, a middle inner hole 13, and a rear inner hole 14 with a successively smaller aperture and no groove structure on the inner wall along its front end to the rear, that is, the inner surfaces of the front inner hole 12, the middle inner hole 13, and the rear inner hole 14 have good overall smoothness, good impedance continuity, and excellent high-frequency performance.

[0051] The elastic outer conductor 2 is fixed to the front end of the female outer conductor 1 and extends out of the front end of the female outer conductor 1, wherein the specific assembly structure of the elastic outer conductor 2 and the female outer conductor 1 is as follows: the rear end of the elastic outer conductor 2 is inserted and positioned in the front inner hole 12 of the female outer conductor 1, they fit each other, and the rear end surface of the elastic outer conductor 2 abuts against the first step surface 121 formed between the front inner hole 12 and the middle inner hole 13, so as to achieve the rear end limit of the elastic outer conductor 2; on this basis, an annular groove 21 is arranged on the outer periphery of the rear side of the elastic outer conductor 2, and the front end of the front inner hole 12 of the female outer conductor 1 is embedded in the annular groove 21 from the outside to the inside through a rivet ring 16 formed by 360° ring riveting, so as to fit tightly, thereby achieving the purpose of limiting / positioning the middle part of the elastic outer conductor 2, so that the elastic outer conductor 2 is stably installed at the front end of the female outer conductor 1, and it is ensured that the two will not shake / loosen for a long time, especially to prevent loosening under vibration, thereby ensuring the quality of the product.

[0052] The front end of the elastic outer conductor 2 is formed with a plurality of strip holes 22, and an elastic arm 23 is formed between two adjacent strip holes 22. The elastic arm 23 is formed with an elastic convex bump 231 protruding outward. The elastic convex bump 231 is used for contacting the inner wall of the slot 80 of the male connector 700 when the female connector 100 is connected to the male connector 700, specifically, the elastic convex bump 231 contacts the inner wall of the slot 80 of the male connector 700, so as to achieve the purpose of tensioning and positioning, thereby improving the plugging and unplugging force.

[0053] The female insulator 3 is inserted into the female outer conductor 1 and the elastic outer conductor 2; wherein, the rear end of the female insulator 3 is inserted into the middle inner hole 13 and fits each other, and the rear end of the female insulator 3 abuts against the second step surface 131 formed between the middle inner hole 13 and the rear inner hole 14, so that the rear end of the female insulator 3 is tightly fitted with the female outer conductor 1.

[0054] The outer diameter of the female insulator 3 is divided into four steps, which are adapted between the female outer conductor 1 and the central conductor female needle 41. By adjusting the outer diameter and dielectric constant of each step of the female insulator 3, the characteristic impedance of 50 ohms of the entire link is adapted. Among them, the outer diameter of the first step of the female insulator 3 is greater than the outer diameter of the second step, the outer diameter of the third step is greater than the outer diameter of the second step, and the outer diameter of the fourth step is greater than the outer diameter of the third step.

[0055] The center conductor female needle 41 is inserted into the female end insulator 3; specifically, the front end of the female end insulator 3 (i.e., the first step of the outer diameter) has a first center hole 31 for the center conductor female needle 41 to be inserted and installed, and the front end of the first center hole 31 has a funnel-shaped guide opening 311; when the center conductor female needle 41 and the center conductor male needle 42 are inserted, even if there is a certain deviation between the centers of the two, the funnel-shaped guide opening 311 can make the center conductor male needle 42 slide smoothly into the first center hole 31, so as to achieve the correct insertion of the center conductor female needle 41 and the center conductor male needle 42. In other words, even if the center conductor male needle 42 deviates from the center, it can be inserted and guided, and then positioned through the guide opening 311 of the female end insulator 3, so as to accurately insert the center conductor female needle 41.

[0056] The outer periphery of the middle part of the female insulator 3 (i.e., the second step of the outer diameter) is provided with a first avoidance groove 32, and an air gap is formed between the first avoidance groove 32 and the elastic outer conductor 2, and the middle and rear part of the female insulator 3 (i.e., the third step of the outer diameter) is provided with a first through groove 33 that penetrates the first center hole 31, and the first through groove 33 is also connected to the first avoidance groove 32, wherein an air gap slot is formed between the outer surface of the middle and rear part of the female insulator 3 (i.e., the third step of the outer diameter) and the inner wall of the elastic outer conductor 2, matching the 50 ohm characteristic impedance of this part of the link. The first barb 411 formed on the outside of the central conductor female needle 41 is embedded in the first through groove 33 for axial locking, and the tail of the central conductor female needle 41 is provided with a first flange 412, and the first flange 412 is clamped and limited with the first limiting groove 312 at the rear end of the first center hole 31, so that the central conductor female needle 41 and the female insulator 3 form a stable assembly. Furthermore, a space gap is formed between the first flange 412 and the first limiting groove 312 , and the space gap is adjusted to match the 50 ohm characteristic impedance of this part of the link.

[0057] The first outer sheath 611 is peeled off at the end of the female coaxial line 61 to reveal the first shielding braided mesh 612 and the first inner insulating layer 613; the first inner insulating layer 613 is inserted into the female outer conductor 1, and the first shielding braided mesh 612 is wrapped around the outer surface of the female outer conductor 1; the first inner insulating layer 613 of the female coaxial line 61 is inserted into the rear inner hole 14, and they fit tightly together. An axial installation gap of less than 0.5 mm is formed between the end of the first inner insulating layer 613 and the female insulator 3.

[0058] The female end wire 614 inside the female end coaxial line 61 is electrically connected to the central conductor female pin 41. The first inner insulating layer 613 is disposed outside the female end wire 614, the first shielding braided mesh 612 is wrapped around the first inner insulating layer 613, and the first outer jacket 611 is wrapped around the first shielding braided mesh 612.

[0059] The front end of the first metal ring 51 is fixed by riveting to the outer surface of the female end outer conductor 1, and clamps the first shielding braided mesh 612, and the rear end of the first metal ring 51 is also fixed by riveting to the first outer jacket 611 of the female end coaxial line 61. In other words, the female end connector 700 fixes the female end outer conductor 1 and the female end coaxial line 61 together by riveting the first metal ring 51, and also presses and positions the first shielding braided mesh 612 of the female end coaxial line 61. It has a stable structure and good tensile strength. The riveting pressure of the first metal ring 51 during riveting is absorbed by the female end outer conductor 1, and does not affect the size and shape of the internal female end insulator 3 and the center conductor female needle 41, so that the product has good high-frequency characteristics.

[0060] Among them, a first grid-shaped protrusion 15 is formed on the outer surface of the rear end of the female end outer conductor 1, and the first shielding braided mesh 612 is wrapped on the first grid-shaped protrusion 15. When the first metal ring 51 is riveted and fixed to the outside of the first shielding braided mesh 612, it can firmly clamp the first shielding braided mesh 612, and can effectively prevent the first shielding braided mesh 612 from detaching, thereby enhancing the tensile strength.

[0061] The specific structure of the male connector 700 is described in detail below.

[0062] The male connector 700 includes: a male outer conductor 7 , a male insulator 8 , a center conductor male needle 42 , a male coaxial line 62 and a second metal ring 52 .

[0063] The male end outer conductor 7 is an integrally formed seamless structure. For example, the male end outer conductor 7 is formed by turning a metal plate, or the male end outer conductor 7 is formed by stamping and stretching a metal tube.

[0064] Since the male outer conductor 7 is an integrally formed and seamless structure, it has good mechanical strength and can enhance the quality of the entire male connector 700. The outer surface of the male outer conductor 7 is formed with a second protrusion 71, and the inner surface of the male outer conductor 7 has no groove structure corresponding to the position of the second protrusion 71; that is, the inner surface of the male outer conductor 7 has good overall smoothness, good impedance continuity, and excellent high-frequency performance.

[0065] The male insulator 8 is inserted into the male outer conductor 7, and a socket 80 for plugging with the female connector 100 is formed between the front end of the male insulator 8 and the inner wall of the front end of the male outer conductor 7; the center conductor male needle 42 is inserted into the male insulator 8, and the front end of the center conductor male needle 42 is exposed in the socket 80; the outer diameter of the male insulator 8 is divided into two steps, which are adapted between the male outer conductor 7 and the center conductor male needle 42, and the characteristic impedance of 50 ohms of the entire link is adapted by adjusting the outer diameter size and dielectric constant of each step of the male insulator 8.

[0066] The front end of the male insulator 8 is also formed with a plug-in portion 82 that can be inserted into the front end of the elastic outer conductor 2. The front end of the central conductor male needle 42 extends out of the front end of the plug-in portion 82. The outer periphery of the end of the plug-in portion 82 is provided with a guiding surface 821. When the female connector 100 and the male connector 700 are plugged together, the plug-in portion 82 is inserted into the front end of the elastic outer conductor 2. Since the outer periphery of the end of the plug-in portion 82 is provided with a guiding surface 821, it plays a guiding role, so that the plug-in portion 82 can be smoothly inserted into the elastic The outer conductor 2 is inserted into the front end, and the center conductor male needle 42 and the center conductor female needle 41 are inserted more smoothly at a later time; the male outer conductor 7 is provided with a third step surface 70, and the rear end surface of the male insulator 8 abuts against the third step surface 70, and a positioning groove 83 is formed on the periphery of the male insulator 8, and the male outer conductor 7 is provided with a riveting convex point 72, and the riveting convex point 72 is pressed into the positioning groove 83 to lock the male insulator 8, thereby ensuring that the male insulator 8 and the male outer conductor 7 form a stable assembly.

[0067] The male insulator 8 has spaced air gap slots 84 formed around the middle of the male insulator 8 to match the 50 ohm characteristic impedance of this part of the link.

[0068] The male end insulator 8 has a second center hole 81 for the center conductor male needle 42 to pass through and install; the second barb 421 formed on the outside of the center conductor male needle 42 is clamped and positioned with the inner wall of the second center hole 81, and the tail of the center conductor male needle 42 is provided with a second flange 422, and the second flange 422 is clamped and limited with the second limiting groove 811 at the rear end of the second center hole 81. A space gap is also formed between the second flange 422 and the second limiting groove 811, and the space gap is adjusted to match the 50 ohm characteristic impedance of this part of the link.

[0069] The second outer sheath 621 is peeled off at the end of the male coaxial line 62 to reveal the second shielding braided mesh 622 and the second inner insulating layer 623; the second inner insulating layer 623 is inserted into the male outer conductor 7 without a cavity therebetween; the second shielding braided mesh 622 is wrapped around the outer surface of the male outer conductor 7. The structure of the male coaxial line 62 is the same as that of the female coaxial line 61.

[0070] The front end of the second metal ring 52 is fixed by riveting to the outer surface of the male outer conductor 7, and clamps the second shielding braided mesh 622, and the rear end of the second metal ring 52 is also fixed by riveting to the second outer jacket 621 of the male coaxial line 62. In other words, the male connector 700 fixes the male outer conductor 7 and the male coaxial line 62 together by riveting the second metal ring 52, and also presses and positions the second shielding braided mesh 622 of the male coaxial line 62. It has a stable structure and good tensile strength. The riveting pressure of the second metal ring 52 during riveting is absorbed by the male outer conductor 7, and does not affect the size and shape of the internal male insulator 8 and the center conductor male needle 42, so that the product has good high-frequency characteristics.

[0071] Among them, a second grid-shaped protrusion 73 is formed on the outer surface of the rear end of the male end outer conductor 7, and the second shielding braided mesh 622 is wrapped on the second grid-shaped protrusion 73. When the second metal ring 52 is riveted and fixed to the outside of the second shielding braided mesh 622, it can firmly clamp the second shielding braided mesh 622, and can effectively prevent the second shielding braided mesh 622 from detaching, thereby enhancing the tensile strength.

[0072] The female connector 100 and the male connector 700 are coaxial connectors.

[0073] As is known to all, the outer conductor (i.e., female outer conductor 1 / male outer conductor 7), center conductor (i.e., center conductor female pin 41 / center conductor male pin 42), insulator (i.e., female insulator 3 / male insulator 8) diameter and dielectric constant in the coaxial connector are the core parameters of the characteristic impedance of the coaxial connector. The female coaxial line 61 of the female connector 100 and the male coaxial line 62 of the male connector 700 in the utility model are both covered with a shielded braided layer to cover the outer conductor mesh, and the riveted structure outside the metal tube is riveted, so the riveting strength is good, and the riveting pressure is absorbed by the outer conductor, which does not affect the inner diameter of the outer conductor, the outer diameter of the center conductor, and the size and shape of the intermediate insulator. While ensuring the tensile strength of the coaxial line after riveting, the optimal high-frequency performance is achieved.

[0074] The specific usage of the female connector 100 and the male connector 700 in the present invention is described in detail below.

[0075] At least one of the female connectors 100 is inserted into the female plastic sheath 91, and the female connector 100 can be protected by the female plastic sheath 91, wherein the female coaxial line 61 extends out of the rear end of the female plastic sheath 91, and a female locking seat 911 is inserted on the female plastic sheath 91. The first locking portion 901 on the female locking seat 911 abuts against the first protrusion 11 to lock, thereby achieving the purpose of locking, so that the female connector 100 and the female plastic sheath 91 form a stable assembly, thereby increasing the service life of the product.

[0076] At least one of the male connectors 700 is inserted into the male plastic sheath 92, and the male plastic sheath 92 can protect the male connector 700, and a socket space 90 for inserting the female plastic sheath 91 is formed between the front end of the male connector 700 and the male plastic sheath 92; the male coaxial line 62 extends out of the rear end of the male plastic sheath 92, and a locking arm 925 is formed on the male plastic sheath 92, and the locking arm 925 abuts against the second protrusion 71 to achieve the purpose of locking, and a male locking seat 921 is inserted into the male plastic sheath 92, and the second locking part 902 on the male locking seat 921 abuts against the second protrusion 71 to achieve secondary locking, so that the male connector 700 and the male plastic sheath 92 form a stable assembly.

[0077] The female plastic sheath 91 is provided with an elastic unlocking handle 913 , on which a mating lock buckle 914 is formed; the male plastic sheath 92 is provided with a locking hole 922 adapted to the mating lock buckle 914 . When the female connector 100 and the male connector 700 are plugged in and connected, the female plastic sheath 91 and the male plastic sheath 92 are also plugged in, wherein the female plastic sheath 91 is inserted into the socket space 90 of the male plastic sheath 92, and the elastic unlocking handle 913 on the female plastic sheath 91 is pressed into the male plastic sheath 92, so that the plug-in lock buckle 914 on the elastic unlocking handle 913 is locked and positioned with the lock hole 922 on the male plastic sheath 92, so that the female plastic sheath 91 and the male plastic sheath 92 are stably plugged in together, and there will be no accidental detachment, thereby ensuring the stability of the plug-in connection between the female connector 100 and the male connector 700.

[0078] The male end plastic sheath 92 is also provided with a wire clamp locking slot 923 for assembling and positioning with the wire clamp and a wire clamp locking pin 924 located beside the wire clamp locking slot 923 .

[0079] In actual use, one of the female connectors 100 can be inserted into the female plastic sheath 91 to form a single-head female connector; correspondingly, one of the male connectors 700 can be inserted into the male plastic sheath 92 to form a single-head male connector. Fig.17 , 20 shown.

[0080] Alternatively, two female connectors 100 may be inserted into the female plastic sheath 91 in parallel to form a double-ended female connector, and correspondingly, two male connectors 700 may be inserted into the male plastic sheath 92 in parallel to form a double-ended male connector. Fig.18 , 1 shown.

[0081] The four female terminal connectors 100 can also be disposed in the female plastic sheath 91 in a way of a cross-shaped distribution to form a four-pin female terminal connector. Correspondingly, the four male terminal connectors 700 are disposed in the male plastic sheath 92 in a way of a cross-shaped distribution to form a four-pin male terminal connector, as Fig.19 , 22 shown.

[0082] Embodiment 2:

[0083] The difference between this Embodiment 2 and the above Embodiment 1 lies in that: the specific structure of the male terminal connector 700 is different. The male terminal connector 700 is not a wire-end connector (assembled with a coaxial cable), but a board-end connector (assembled with a PCB board). The male terminal connector 700 in this Embodiment 2 does not have a male coaxial cable and a second metal ring, and the structure of the center conductor male pin 42 is changed. Specifically, as shown in Figure 23-24 , the center conductor male pin 42 is formed with a pin portion 420 for assembling with the PCB board 10, and the pin portion 420 extends out of the male insulator 8. The male terminal connector 700 is used after being disposed in the male plastic sheath 92.

[0084] Except for the above, the other structures of this Embodiment 2 are the same as those of the above Embodiment 1, and the technical effects are also the same, which will not be elaborated here one by one.

[0085] Certainly, the above are only specific embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention shall be included in the scope of the patent application of the present invention.

Claims

1. A high-performance Mini FAKRA connector, comprising a female connector (100), characterized in that: The female connector (100) comprises: An integrally formed and seamless female end outer conductor (1), wherein a first protrusion (11) is formed on the outer surface of the female end outer conductor (1), and there is no groove structure at a position on the inner surface of the female end outer conductor (1) corresponding to the first protrusion (11); An elastic outer conductor (2) fixed to the front end of the female end outer conductor (1); A female end insulator (3) is inserted into the female end outer conductor (1) and the elastic outer conductor (2); A central conductor female needle (41) is inserted into the female end insulator (3); A female coaxial line (61), wherein the first outer sheath (611) is peeled off at the end of the female coaxial line (61) to expose a first shielding braided mesh (612) and a first inner insulating layer (613); the first inner insulating layer (613) is inserted into the female outer conductor (1), and the first shielding braided mesh (612) is wrapped around the outer surface of the female outer conductor (1); The first metal ring (51) has a front end fixed by riveting to the outer surface of the female end outer conductor (1) and clamps the first shielding braided mesh (612), and the rear end of the first metal ring (51) is also fixed by riveting to the first outer jacket (611) of the female end coaxial line (61).

2. A high performance Mini FAKRA connector according to claim 1, characterized in that: The female end outer conductor (1) is provided with a front inner hole (12), a middle inner hole (13) and a rear inner hole (14) whose apertures gradually decrease and whose inner walls have no groove structure along its front end. The rear end of the elastic outer conductor (2) is inserted and positioned in the front inner hole (12), and the rear end surface of the elastic outer conductor (2) abuts against a first step surface (121) formed between the front inner hole (12) and the middle inner hole (13). An annular groove (21) is provided on the outer periphery of the rear side of the elastic outer conductor (2), and the front end of the front inner hole (12) of the female end outer conductor (1) is embedded in the annular groove (21) from the outside to the inside through a rivet ring (16) formed by 360° ring riveting, so as to be tightly fitted.

3. A high performance Mini FAKRA connector according to claim 1, characterized in that: The front end of the elastic outer conductor (2) is formed with a plurality of strip-shaped holes (22), an elastic arm (23) is formed between two adjacent strip-shaped holes (22), and an elastic convex bump (231) protruding outwards is formed on the elastic arm (23).

4. A high performance Mini FAKRA connector according to claim 2, characterized in that: The rear end of the female end insulator (3) is inserted into the middle inner hole (13), and the rear end of the female end insulator (3) abuts against a second step surface (131) formed between the middle inner hole (13) and the rear inner hole (14); the first inner insulating layer (613) of the female end coaxial line (61) is inserted into the rear inner hole (14); the front end of the female end insulator (3) has a first center hole (31) for the center conductor female needle (41) to be inserted and installed, and the front end of the first center hole (31) has a funnel-shaped guide opening (311); the middle outer portion of the female end insulator (3) is provided with a first inner insulating layer (613) of the female end coaxial line (61) to be installed; A first air avoidance groove (32) is arranged around the female end insulator (3), an air gap is formed between the first air avoidance groove (32) and the elastic outer conductor (2), and a first through groove (33) penetrating the first center hole (31) is opened at the rear part of the female end insulator (3), a first barb (411) formed on the outside of the center conductor female needle (41) is embedded in the first through groove (33) for axial locking, and a first flange (412) is arranged at the tail of the center conductor female needle (41), and the first flange (412) is locked and limited with the first limiting groove (312) at the rear end of the first center hole (31).

5. A high performance Mini FAKRA connector according to any one of claims 1 to 4, characterized in that: It also includes a male connector (700) that is plugged into and electrically connected to the female connector (100), and the male connector (700) includes: An integrally formed and seamless male end outer conductor (7), wherein a second protrusion (71) is formed on the outer surface of the male end outer conductor (7), and there is no groove structure at a position on the inner surface of the male end outer conductor (7) corresponding to the second protrusion (71); A male end insulator (8) is inserted into the male end outer conductor (7), and a mating slot (80) for mating with a female end connector (100) is formed between the front end of the male end insulator (8) and the inner wall of the front end of the male end outer conductor (7); A central conductor male needle (42) is inserted into the male end insulator (8), and the front end of the central conductor male needle (42) is exposed in the corresponding slot (80); A male coaxial line (62), wherein the second outer sheath (621) is peeled off at the end of the male coaxial line (62) to expose the second shielding braided mesh (622) and the second inner insulating layer (623); the second inner insulating layer (623) is inserted into the male outer conductor (7) without a cavity therebetween; the second shielding braided mesh (622) is wrapped around the outer surface of the male outer conductor (7); The front end of the second metal ring (52) is fixedly riveted to the outer surface of the male end outer conductor (7) and clamps the second shielding braided mesh (622), and the rear end of the second metal ring (52) is also fixedly riveted to the second outer jacket (621) of the male end coaxial line (62).

6. A high performance Mini FAKRA connector according to any one of claims 1 to 4, characterized in that: It also includes a male connector (700) that is plugged into and electrically connected to the female connector (100), and the male connector (700) includes: An integrally formed and seamless male end outer conductor (7), wherein a second protrusion (71) is formed on the outer surface of the male end outer conductor (7), and there is no groove structure at a position on the inner surface of the male end outer conductor (7) corresponding to the second protrusion (71); A male end insulator (8) is inserted into the male end outer conductor (7), and a mating slot (80) for mating with a female end connector (100) is formed between the front end of the male end insulator (8) and the inner wall of the front end of the male end outer conductor (7); A central conductor male pin (42) is inserted into the male end insulator (8), and the front end of the central conductor male pin (42) is exposed in the corresponding slot (80). The central conductor male pin (42) is formed with a pin portion (420) for assembly with a PCB board (10), and the pin portion (420) extends out of the male end insulator (8).

7. The high performance Mini FAKRA connector according to claim 5, characterized in that: The male end insulator (8) has a second center hole (81) for the center conductor male needle (42) to pass through and install; a second barb (421) formed on the outside of the center conductor male needle (42) is clamped and positioned with the inner wall of the second center hole (81), and a second flange (422) is provided at the tail of the center conductor male needle (42), and the second flange (422) is clamped and limited with a second limiting groove (811) at the rear end of the second center hole (81).

8. The high performance Mini FAKRA connector according to claim 5, characterized in that: The front end of the male insulator (8) is also formed with an inserting portion (82) that can be inserted into the front end of the elastic outer conductor (2), the front end of the central conductor male needle (42) extends out of the front end of the inserting portion (82), and the outer periphery of the end of the inserting portion (82) is provided with a guiding surface (821); the male outer conductor (7) is provided with a third step surface (70), the rear end surface of the male insulator (8) abuts against the third step surface (70), and a positioning groove (83) is formed on the outer periphery of the male insulator (8), and the male outer conductor (7) is provided with a rivet protrusion (72), and the rivet protrusion (72) is pressed into the positioning groove (83) to lock the male insulator (8).

9. The high performance Mini FAKRA connector according to claim 5, characterized in that: The rear end outer surface of the female end outer conductor (1) is formed with a first grid-shaped protrusion (15), and the first shielding braided mesh (612) is wrapped around the first grid-shaped protrusion (15); the rear end outer surface of the male end outer conductor (7) is formed with a second grid-shaped protrusion (73), and the second shielding braided mesh (622) is wrapped around the second grid-shaped protrusion (73).

10. The high performance Mini FAKRA connector according to claim 5, characterized in that: At least one of the female connectors (100) is inserted into the female plastic sheath (91), and the female coaxial line (61) extends out of the rear end of the female plastic sheath (91). A female locking seat (911) is inserted into the female plastic sheath (91), and a first locking portion (901) on the female locking seat (911) abuts against a first protrusion (11) for locking; at least one of the male connectors (700) is inserted into the male plastic sheath (92), and a socket space (90) for inserting the female plastic sheath (91) is formed between the front end of the male connector (700) and the male plastic sheath (92); the male coaxial line (62) extends out of the female plastic sheath (911). A locking arm (925) is formed on the male end plastic sheath (92) outside the rear end thereof, and the locking arm (925) abuts against the second protrusion (71) for locking, and a male end locking seat (921) is inserted on the male end plastic sheath (92), and the second locking portion (902) on the male end locking seat (921) abuts against the second protrusion (71) for secondary locking; an elastic unlocking handle (913) is provided on the female end plastic sheath (91), and a mating lock buckle (914) is formed on the elastic unlocking handle (913); and a locking hole (922) adapted to the mating lock buckle (914) is provided on the male end plastic sheath (92).

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