CN118431845A - High-frequency coaxial connector and connector assembly - Google Patents

Abstract

The invention relates to a high-frequency coaxial connector and a connector assembly, comprising: a base mechanism, comprising: the shielding device comprises an outer shell, a first sleeve body arranged in the outer shell, and a shielding piece embedded in the first sleeve body, wherein an accommodating cavity is formed in the outer shell; the floating mechanism can be floatably accommodated in the accommodating cavity and comprises: the elastic terminal comprises a plate body which is spirally arranged along the axial direction, and the shielding piece is coaxially arranged on the plate body in a surrounding mode. Through the arrangement, the signal integrity of the coaxial connector of the automobile can meet various test standards, and various high-frequency tests of 9G frequency can be completely passed.

Description

High-frequency coaxial connector and connector assembly

Technical Field

The invention relates to the technical field of connectors, in particular to a high-frequency coaxial connector and a connector assembly.

Background

Electronic devices mounted on vehicles and the like need to be connected to external cables through coaxial electrical connectors to achieve power connection and data transmission. The higher the working frequency of the connector is, the higher the bandwidth can be achieved under the same specification for the electronic equipment, and the larger the bandwidth of the connector is, the larger the bandwidth of the connector can allow the camera to transmit a picture with higher resolution in real time, so that more information can be more easily identified from the picture, and the possible risk is reduced.

In order to improve the bandwidth, under the same specification, the coaxial connector is required to transmit a higher frequency signal, but the signal carried by the traditional coaxial connector can only reach 6G, when the frequency of the signal number is higher, the unavoidable manufacturing and assembly tolerances in the connector can lead to corresponding reduction of the signal integrity, so that the signal cannot meet corresponding use standards, in addition, in order to adapt to the vibration environment of a vehicle and facilitate the testing or use assembly of the connector, the coaxial connector can be designed to be floatable, the coaxiality between the terminal and the outer conductor of the coaxial connector is subjected to floating influence in the use process, negative feedback is brought to the characteristic impedance of the coaxial connector, and the high-frequency characteristic of the connector is further reduced.

Disclosure of Invention

Therefore, the invention aims to solve the technical problems that the connector in the prior art has lower signal integrity when transmitting high-frequency signals and is not easy to design into a floating type when transmitting the high-frequency signals, thereby providing a high-frequency coaxial connector and a connector assembly.

In order to solve the above technical problems, the present invention provides a high-frequency coaxial connector, comprising:

a base mechanism, comprising: the shielding device comprises an outer shell, a first sleeve body arranged in the outer shell, and a shielding piece embedded in the first sleeve body, wherein an accommodating cavity is formed in the outer shell;

The floating mechanism can be floatably accommodated in the accommodating cavity and comprises: the elastic terminal comprises a plate body which is spirally arranged along the axial direction, and the shielding piece is coaxially arranged on the plate body in a surrounding mode.

In one embodiment of the present invention, the elastic terminal further includes: the connector comprises a limiting piece, a plug connector, a floating piece and a first welding piece, wherein the limiting piece is clamped in the second sleeve body, the plug connector and the floating piece are respectively arranged at two ends of the limiting piece, the first welding piece is connected to the end part of the floating piece, the plug connector is used for being plugged with a male end connector to be connected, the floating piece is a plate body which is axially and spirally arranged, and the floating piece is used for axially and radially floating the plug connector.

In one embodiment of the invention, the thickness direction of the plate body is parallel to the radial direction of the shielding member, the width direction of the plate body is parallel to the axial direction of the shielding member, and the spiral angle of the plate body is less than 360 °.

In one embodiment of the invention, the outer conductor comprises: the limiting ring, a plurality of groups set up in the first elastic wall subassembly and the second elastic wall subassembly of limiting ring both sides, every group first elastic wall subassembly includes two first elastic walls that the interval set up, and connect in every group two first elastic wall tip first butt joint portion, every second elastic wall subassembly includes: the second elastic wall and the second butt joint part are connected to the end part of the second elastic wall.

In one embodiment of the present invention, a space is formed between adjacent first elastic wall assemblies, a lower side wall of the space includes a first abutment surface, the second sleeve body is provided with a first protrusion abutted against the first abutment surface, a third elastic wall is provided between the first elastic walls in each group of the elastic wall assemblies, the third elastic wall is elastically abutted against an outer surface of the second sleeve body, and the second sleeve body is provided with a receiving groove adapted to the third elastic wall.

In one embodiment of the invention, the lower end of the limiting piece is bent inwards to form a plurality of first bending parts, a plurality of first ribs are axially arranged in the second sleeve body, clamping grooves are formed in the end parts of the first ribs, the upper end part of the limiting piece is clamped in the clamping grooves, a first gap penetrating axially is formed in the periphery of the limiting piece, and at least one clamping groove is clamped with the limiting piece at a position close to the first gap.

In one embodiment of the invention, the elastic terminal is further provided with a fourth protrusion, the fourth protrusion is arranged on the limiting piece, the second sleeve body is provided with a second abutting surface for stopping the lower end of the fourth protrusion, and a stopping gap is formed between the fourth protrusion and the second abutting surface.

In one embodiment of the invention, the plug connector comprises a plurality of fourth elastic walls, the fourth elastic walls taper towards the end parts of the fourth elastic walls, and the end parts of the fourth elastic walls are provided with plug guiding parts which are bent outwards.

In one embodiment of the present invention, the outer housing is further provided with a plurality of return walls, the return walls are connected to the outer housing and the ends of the return walls are elastically abutted against the outer conductor, and the plurality of return walls are elastically abutted against the outer housing.

In one embodiment of the invention, a first avoidance groove is formed in the lower end of the first sleeve body and used for the first welding piece to pass through, a second avoidance groove is formed in the outer shell body and used for the shielding piece to pass through, and the bottoms of the outer shell body, the first welding piece and the shielding piece are located on the same plane.

In one embodiment of the present invention, the coaxial connector is further sleeved with an adsorption cover, the adsorption cover is covered on the outer side of the outer shell, a second protrusion is arranged on the periphery of the first sleeve body and is used for being abutted to the outer shell, a third rib is axially arranged in the adsorption cover, and the third rib passes through the spacing space and is abutted to the second sleeve body.

The invention also provides a connector assembly which is characterized by comprising the coaxial connector and a male connector, wherein the male connector and the coaxial connector are in plug-in fit.

Compared with the prior art, the technical scheme of the invention has the following advantages:

According to the high-frequency coaxial connector, the outer shell is used for providing structural support, the inner accommodating cavity is formed for accommodating the floating mechanism, the first sleeve body is arranged in the accommodating cavity, the shielding piece is embedded into the first sleeve body, the first sleeve body is coated on the outer surface of the shielding piece, the shielding piece is insulated relative to the elastic terminal and the outer conductor, the lower end of the outer conductor is elastically abutted to the inner part of the outer shell, the outer conductor and the outer shell are electrically connected, the second sleeve body is arranged between the outer conductor and the elastic terminal, the outer conductor and the elastic terminal are mutually insulated, the elastic terminal and the second sleeve body are accommodated in the outer conductor in a floating mode, and as the outer conductor with the corresponding height of the plate body is a deformation part when the connector floats, a circle of even shielding piece is arranged on the periphery of the plate body, the change of characteristic impedance of the connector can be reduced.

Drawings

In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

FIG. 1 is a schematic view of the structure of the adsorption cap of the present invention;

fig. 2A is a schematic view of the overall structure of the coaxial connector of the present invention;

FIG. 2B is a schematic view of the coaxial connector of the present invention as a whole with a return wall;

FIG. 3 is a cross-sectional view of the connector portion of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the structure of the spring terminal of the present invention;

FIG. 5 is a semi-sectional view of the spring terminal of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of the structure of the outer housing of the present invention;

FIG. 7 is a cross-sectional view taken along the direction A-A in FIG. 6 in accordance with the present invention;

FIG. 8 is a cross-sectional view taken along the direction B-B in FIG. 6 in accordance with the present invention;

FIG. 9 is an exploded view of the second sleeve and outer conductor of the present invention;

FIG. 10 is a schematic view of the structure of the outer conductor of the present invention;

FIG. 11 is a bottom perspective view of the outer housing of the present invention;

FIG. 12 is a schematic view of the structure of the first sleeve of the present invention;

FIG. 13 is a schematic illustration of the position of the outer housing and return wall of the present invention;

FIG. 14 is a schematic view of the structure of the shield of the present invention;

FIG. 15 is a semi-sectional view of the suction cap of the present invention;

FIG. 16 is a graph of a test of characteristic impedance of the present invention;

FIG. 17 is a graph of a test of insertion loss of the present invention;

FIG. 18 is a graph of a test of return loss in accordance with the present invention;

FIG. 19 is a graph of a test of standing wave ratio of the present invention.

Description of the specification reference numerals: 1. an outer housing; 11. a first narrowing; 12. a first limit part; 13. a return wall; 14. a planar portion; 15. positioning holes; 16. a third abutment surface; 17. a limit plane; 18. an avoidance unit;

2. An adsorption cover; 21. a lower adsorption tank; 22. a first limit groove; 23. a second rib; 24. a third rib; 25. an outer jack; 26. a second gap; 27. grasping the wall;

3. A circuit board;

4. An outer conductor; 41. a first elastic wall assembly; 411. a first elastic wall; 412. a third elastic wall; 413. a first abutment surface; 414. an outer expansion part; 415. a second limit part; 416. a second narrowing; 417. an extension; 42. a limiting ring; 421. a first straight tube portion; 422. a third narrowing; 423. a second straight tube portion; 43. a second elastic wall assembly;

5. A second sleeve; 51. a first rib; 52. a first protrusion; 53. a fourth rib; 54. an inner jack; 55. the second limit groove; 56. a second abutment surface;

6. An elastic terminal; 61. a plug-in component; 611. a fourth elastic wall; 612. a conduction part; 613. a plug-in guiding part; 614. a plug cavity; 615. a third gap; 62. a limiting piece; 621. a first gap; 622. a fourth protrusion; 623. a fifth gap; 624. a first bending part; 625. a fourth abutment surface; 63. a floating member; 631. a first plate body; 632. a second plate body; 633. a sixth gap; 634. a seventh gap; 64. a first weldment; 641. a second bending part; 642. a first horizontal portion; 643. a third bending part; 644. a second horizontal portion;

7. A first sleeve; 71. a clamping part; 72. a second protrusion; 73. a limit protrusion;

8. a shielding ring; 81. a second weldment; 82. a third limit groove; 83. and a third protrusion.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it. For ease of description, the coaxial connector is defined herein as "up" at the end of the coaxial connector that abuts the male connector and "down" at the end of the coaxial connector that faces away from the male connector.

Example 1

Referring to fig. 1 to 16, a high frequency coaxial connector of the present invention includes:

A base mechanism, comprising: the shielding device comprises an outer shell 1, a first sleeve body 7 arranged in the outer shell 1 and a shielding piece embedded in the first sleeve body 7, wherein an accommodating cavity is formed in the outer shell 1;

The floating mechanism can be floatably accommodated in the accommodating cavity and comprises: the first side elasticity butt in the outer conductor 4 of shell body 1, coaxial set up in elastic terminal 6 in the outer conductor 4, rigid coupling in the second cover body 5 between outer conductor 4 second side and elastic terminal 6, the coaxial setting of second cover body 5 and first cover body 7 and have the space that floats between the two, elastic terminal 6 includes the plate body that sets up along axial spiral, the coaxial ring of shield locates the plate body.

The invention provides a high-frequency coaxial connector, which is structurally supported by an outer shell 1 and forms an inner accommodating cavity for accommodating a floating mechanism, a first sleeve 7 is arranged in the accommodating cavity, a shielding member is embedded into the first sleeve 7, the outer surface of the shielding member is covered by the first sleeve 7, the shielding member is insulated relative to an elastic terminal 6 and an outer conductor 4, the lower end of the outer conductor 4 is elastically abutted in the outer shell 1, the outer conductor 4 and the outer shell 1 are electrically connected, a second sleeve 5 is arranged between the outer conductor 4 and the elastic terminal 6 to insulate the outer conductor 4 and the elastic terminal 6 from each other, the elastic terminal 6 and the second sleeve 5 are accommodated in the outer conductor 4 in a floating manner, by arranging a plate body in a spiral manner, not only the elastic terminal 6 can float in an axial direction and a radial direction, but also the compression and the deformation of the plate body are uniform when the plate body deviates towards each direction, the characteristic impedance change of the elastic terminal 6 can be reduced, because the plate body and the outer conductor 4 with the corresponding height of the plate body are deformation parts when the connector floats, a circle of even shielding piece is arranged on the periphery side of the plate body, the characteristic impedance change of the connector can be reduced, meanwhile, the plate body is in a spiral shape, larger elastic force can be provided in smaller axial displacement, under the condition of meeting the male-female butt joint plugging force and structure buffering, the axial displacement is smaller, the characteristic impedance change of the elastic terminal 6 is further reduced, and the first sleeve body 7 and the shielding ring 8 are limited and positioned by matching with the outer shell body 1, so that the shielding ring 8 and the elastic terminal 6 can keep higher coaxiality, the insertion loss, the return loss and the standing wave ratio of the connector meet the test standard, and when the male-end connector and the coaxial connector have assembly tolerance, the inner spring terminals 6 and outer conductors 4 can be deflected to float to accommodate a male connector.

Wherein, the outer shell 1, the outer conductor 4 and the elastic terminal 6 are conductors for establishing electrical connection, and are made of metal, such as brass, beryllium bronze, tin phosphor bronze, stainless steel, aluminum alloy, and optionally coated with gold, and the first sleeve 7 and the second sleeve 5 are made of insulating materials.

Referring to fig. 4 and 5, the elastic terminal 6 further includes: the connector comprises a limiting piece 62, a plug-in piece 61, a floating piece 63 and a first welding piece 64, wherein the plug-in piece 61 and the floating piece 63 are respectively arranged at two ends of the limiting piece 62, the first welding piece 64 is connected to the end part of the floating piece 63, the plug-in piece 61 is used for plugging a male connector to be connected, the floating piece 63 is a plate body which is axially spirally arranged, the floating piece 63 is used for enabling the plug-in piece 61 to axially and radially float, an elastic terminal 6 is clamped in the second sleeve body 5 through the limiting piece 62, the limiting piece 62 is fixedly connected with the outer conductor 4 through the second sleeve body 5, so that the elastic terminal 6 and the outer conductor 4 coaxially float, the plug-in piece 61 is arranged at the upper end of the limiting piece 62 and used for being plugged in a male connector to be connected, a plug-in cavity 614 is arranged in the elastic terminal 6, and the plug-in pair of the male connector is plugged in the plug-in cavity 614 and electrically connected with the plug-in piece 61.

With continued reference to fig. 4 and 5, the thickness direction of the plate body is parallel to the radial direction of the shielding member, the thickness of the plate body is uniform everywhere, the width direction of the plate body is parallel to the axial direction of the shielding member, so that the plate body provides enough axial elastic force with smaller displacement when receiving axial pressure, and meanwhile, the structure change of the plate body is uniform when receiving radial deflection force in all directions, the influence on characteristic impedance is reduced, the plate body is divided into a first plate body 631 and a second plate body 632, the first plate body 631 is connected with the first welding member 64, the second plate body 632 is connected with the limiting member 62, the spiral angle of the plate body is smaller than 360 degrees, namely, a seventh gap 634 exists between the end parts of the first plate body 631 and the second plate body 632 in the axial direction, the first plate body 631 and the second plate body 632 cannot be conducted in a dislocation mode, a sixth gap 633 exists between the limiting member 62 and the second plate body, the change of characteristic impedance is reduced in the compression process of the plate body, preferably, the sixth gap 633 is larger than the thickness of the plate body, the seventh gap 634 is larger than the thickness of the axial gap can provide proper expansion and contraction force between the shielding member 6 and the conductor 4, and the proper expansion and contraction force can be provided.

The first welding member 64 includes a second bending portion 641, a first horizontal portion 642 horizontally disposed, a third bending portion 643 connected to an end of the first horizontal portion 642, a second horizontal portion 644 connected to an end of the third bending portion 643, a first avoiding groove in the avoiding portion 18 for accommodating the second horizontal portion 644, and a corresponding first limiting groove 22 for positioning and limiting the second horizontal portion 644 for the adsorbing cover 2.

Referring to fig. 6 to 10, the outer conductor 4 includes: the limiting ring 42, a plurality of groups set up in the first elastic wall subassembly 41 and the second elastic wall subassembly 43 of limiting ring 42 both sides, limiting ring 42 includes two coaxial first straight barrel 421 and second straight barrel 423 that set up, first straight barrel 421 and second straight barrel 423 pass through third constriction 422 transitional coupling, the internal diameter of first straight barrel 421 is less than second straight barrel 423, thereby carry out the spacing axially upwards to first cover body 7 through the constriction, each group first elastic wall subassembly 41 includes two first elastic wall 411 that the interval set up, and connect in the first butt joint portion of two first elastic wall 411 tip of every group, the interval between the first elastic wall 411 can hold third elastic wall 412, the elastic direction of third elastic wall 412 is the radial of connector, can be used for maintaining the axiality between second cover body 5 and the outer conductor 4 and improve elastic force, each second elastic wall subassembly 43 includes: the second elastic wall, connect in the second butt joint portion of second elastic wall tip, the second elastic wall sets up the lower extreme at outer conductor 4, is formed with third butt joint face 16 at the space diapire between second elastic wall and return wall 13, and one side of plane portion 14 still is provided with avoids the portion and is used for enclosing and closes and form first dodge the groove.

Specifically, the second elastic wall is disposed between the first sleeve body 7 and the outer housing 1, the accommodating cavity in the outer housing 1 is divided into a first accommodating groove and a second accommodating groove, the first accommodating groove is enclosed between the first sleeve body 7 and the outer housing 1, the second accommodating groove is formed by the inner space of the first sleeve body 7, and the arc-shaped parts of the second elastic wall are clamped on two side walls of the first accommodating groove so as to allow the limiting ring 42 of the outer conductor 4 and the first elastic wall assembly 41 to float in the outer housing 1, and the elastic terminal 6 floats in the second accommodating groove through the floating piece 63.

Referring to fig. 9-10, a space is formed between the adjacent first elastic wall assemblies 41, the space is disposed at an upper portion of the outer conductor 4, a lower side wall of the space includes a first abutting surface 413, the second sleeve 5 is provided with a first protrusion 52 abutting against the first abutting surface 413, by matching the first abutting surface 413 and the first protrusion 52, not only the second sleeve 5 can be positioned, but also sufficient insertion supporting force is provided for the second sleeve 5, a third elastic wall 412 is disposed between the first elastic walls 411 in each group of the elastic wall assemblies, the third elastic wall 412 elastically abuts against an outer surface of the second sleeve 5, the second sleeve 5 is provided with a receiving groove adapted to the third elastic wall 412, and the third elastic wall 412 is disposed at a lower end between each group of the two first elastic walls 411.

The upper end of the first elastic wall 411 is provided with an outer expansion part 414, each group of adjacent first elastic walls 411 is connected through the outer expansion part 414, the end part of the outer expansion part 414 is provided with a second limiting part 415 to enable the outer conductor 4 to be connected with a male end connector, the end part of the second limiting part 415 is internally narrowed with a second narrowing part 416, the end part of the narrowing part is approximately horizontally and inwards extended with an extension part 417, and the upper end of the first elastic wall 411 is made into a fan-shaped arc-spherical structure so as to meet the requirement of elastic floating connection.

With continued reference to fig. 4 and 5, the lower end portion of the limiting member 62 is bent inward to form a plurality of first bending portions 624, and due to the limitation of the shape of the limiting member 62, the limiting member 62 is bent from the bending during the production process, so that an axial gap is inevitably formed, in this embodiment, a shrinkage space is provided for the first axial gap 621 on the side wall of the limiting ring 42, so that the limiting ring 42 has shrinkage deformation when being elastically assembled into the second sleeve body 5, and the lower end of the limiting member 62 is provided with a first bending plate, so that on one hand, stress concentration at the lower end of the limiting member 62 can be reduced, on the other hand, the first bending portion 624 at a single bending position under the limiting member 62 leaves a fifth gap 623, and the shrinkage space is uniformly provided at the lower end of the limiting member 62, so that each shrinkage space at the lower end of the second limiting member 62 can be slightly deformed uniformly, and the circumference of the limiting member 62 can be maintained while the shrinkage space is reduced.

Referring to fig. 5 and 10, the second sleeve body 5 is axially provided with a plurality of first ribs 51, the end of the first ribs 51 is provided with a clamping groove, the upper end of the limiting piece 62 is clamped in the clamping groove, the upper end of the limiting piece 62 is clamped by the clamping groove on the ribs, the lower side wall of the third gap 615 is provided with a fourth abutting surface 625, the clamping fourth abutting surface 625 and the side wall thereof are clamped into the clamping groove, the elasticity of the clamping groove itself can grasp the peripheral side wall of the limiting piece 62 to reduce the shrinkage, in addition, the side wall of the fourth elastic wall 611 can also abut the side wall of the first ribs 51 to further reduce the shrinkage of the limiting piece 62, the peripheral side of the limiting piece 62 is provided with a first gap 621 penetrating axially, at least one clamping groove is clamped with the limiting piece 62 at a position close to the first gap 621, the shrinkage of the limiting piece 62 on the first gap 621 tends to be maximum, the clamping groove clamping structure is arranged at the first gap 621, the circumferential shrinkage of the first gap 621 can be reduced, the outer side wall of the second sleeve body 5 is further provided with an axial fourth rib 53, the fourth rib 53 is matched with the space, when the first elastic wall assembly 41 is shrunk inwards, the fourth rib 53 is accommodated in the space to form a spacing wall, the second sleeve body 5 is further provided with a second limiting groove 55 from the upper end axially, the second limiting groove 55 does not penetrate through the length, the second limiting groove 55 and the fourth rib 53 are arranged in a staggered mode, the second rib 23 and the third rib 24 in the adsorption cover 2 are mutually abutted when assembled, and the coaxiality of the second sleeve body 5 is ensured.

Referring to fig. 4, the elastic terminal 6 is further provided with a fourth protrusion 622, the fourth protrusion 622 is disposed on the limiting member 62, the second sleeve body 5 is provided with a second abutment surface 56 for stopping the lower end of the fourth protrusion 622, the fourth protrusion 622 is matched with the second abutment surface 56 of the second sleeve body 5 to provide an inserting supporting force for the elastic terminal 6, a stopping gap is formed between the fourth protrusion 622 and the second abutment surface 56, and a plurality of fourth protrusions 622 are uniformly disposed on the bearing of the limiting member 62.

With continued reference to fig. 4, the plug 61 includes a plurality of fourth elastic walls 611, the fourth elastic walls 611 taper towards their ends, the ends of the fourth elastic walls 611 are provided with outwardly bent plug guide portions 613, the fourth elastic walls 611 not only taper towards the upper ends, but also have a tapered circular arc shape, so that the mouth of the plug cavity 614 and the male connector can be tightly plugged, the ends of the fourth elastic walls 611 are connected with the plug guide portions 613 through the conductive portions 612, the plug guide portions 613 expand outwards to realize pin guiding, the conductive portions 612 are the portions of the plug guide portions 613 and the portions of the fourth elastic portions, which are close to the axes of the connectors, and the connection portions of the pins and the elastic terminals 6 are stabilized through the conductive portions 612.

Referring to fig. 1, fig. 2A, fig. 2B, fig. 11, fig. 12, the outer housing 1 is further provided with a plurality of return walls 13, the return walls 13 are connected to the outer housing 1 and the ends are elastically abutted to the outer conductor 4, a plurality of return walls 13 are elastically abutted to the outer housing 1, the connectors can be automatically returned in the plugging test process by uniformly abutting the plurality of return walls 13 around the outer housing 1, the coaxiality of the return is maintained, the floating mechanism is not required to be readjusted for returning in the plugging process for many times, the periphery of the outer housing 1 is provided with a limiting plane 17 matched with the inner wall of the adsorption cover 2, the upper end of the outer housing 1 is provided with a first narrowing part 11 and a first limiting part 12 which are narrowed inwards, so that the first sleeve 7 is limited upwards, and the plane part 14 is further provided with a plurality of positioning holes 15 for grabbing tin or columns to pass through and lock.

Referring to fig. 11-14, a first avoidance groove is formed at the lower end of the first sleeve body 7 for the first welding member 64 to pass through, a second avoidance groove is formed in the outer shell body 1 for the shielding member to pass through, the outer shell body 1, the first welding member 64 and the bottom of the shielding member are located on the same plane, the first avoidance groove and the second avoidance groove respectively accommodate the first welding member 64 and the second welding member at the end of the shielding member, so that the plane part 14 at the lower end of the outer shell body 1 is kept in a horizontal state and is connected with the circuit board 3, a plurality of conduction contacts are arranged on the circuit board 3, wherein the contacts between the shielding member and the outer shell body 1 can be mutually conducted, and the contacts of the elastic terminals 6 are relatively independent.

Referring to fig. 1 and 15, the coaxial connector is further sleeved with an adsorption cover 2, the adsorption cover 2 is covered on the outer side of the outer shell 1, a second protrusion 72 is disposed on the peripheral side of the first sleeve body 7 and is used for being abutted against the outer shell 1, a third rib 24 is axially disposed on the adsorption cover 2, the third rib 24 passes through a spacing space and is abutted against the second sleeve body 5, and the electrical connector needs upper plate welding assembly or project test, but due to the structural factor of the connector, a sufficiently wide plane is difficult to provide to be matched with a robot to grasp, which is not beneficial to the requirement of automatic upper plate, therefore, in the processing and test assembly of the electrical connector, an adsorption cover 2 needs to be provided with a sufficiently wide plane to be matched with the robot to grasp when the connector main body moves, in this embodiment, a plurality of second gaps 26 are disposed at the lower end of the adsorption cover 2, the second gaps 26 do not penetrate the length of the adsorption cover 2, so that the adsorption end has elastic capacity, the first sleeve body 7 is further provided with a groove body clamping portion 71 for fixing the implant protruding part and preventing the second protrusion from being matched with the implant surface part 73 when the mask body is in a position, and the implant part is fixed to be matched with the protrusion 14 to prevent the protrusion from rotating.

In addition, the second rib 23 of the inner wall of the adsorption cover 2 can elastically limit the outside of the outer shell 1, the third rib 24 can extend into the interval space between the first elastic wall components 41, limit locking is carried out on the first elastic wall 411 and the outer conductor 4 so as to keep coaxiality between the outer shell 1 and the outer conductor 4, the top end of the adsorption cover 2 is provided with an outer jack 25, the outer jack 25 and the inner jack 54 of the second sleeve body 5 are coaxially arranged, the connector is conveniently observed or tested under the condition that the adsorption cover 2 is not removed, the lateral direction of the adsorption cover 2 is further provided with a grabbing wall 27, the grabbing wall 27 encloses a lower adsorption groove 21 with a downward opening, multiple options of adapting a grabbing mechanism are provided, the bottom of the adsorption cover 2 is further provided with a first limiting groove 22, and the end of the first welding piece 64 is limited and positioned.

As shown in fig. 14, the two ends of the shielding ring 8 in the shielding member are provided with third limiting grooves 82 for improving the adhesive force with the first sleeve body 7, the periphery of the shielding ring 8 is further provided with third protrusions 83 for improving the adhesive force with the first sleeve body 7, the third protrusions 83 can be formed by stamping to be outwards protrusions, the end part of the shielding ring 8 is provided with second welding pieces 81 for welding with a circuit board, and the second welding pieces 81 are similar to the first welding pieces 64 in shape.

Example two

The embodiment discloses a connector assembly, which comprises a coaxial connector as in the first embodiment, and further comprises a male connector, wherein the male connector and the coaxial connector are in plug-in fit.

The connector assembly of the embodiment is used for signal butt joint between a test instrument and a device to be tested, for example, stable connection is established between a radio frequency signal analyzer and a tested part, signal integrity is ensured, accurate frequency response, attenuation or noise coefficient and other parameters are conveniently measured, and the connector assembly is particularly suitable for tolerance matching.

In signal transmission system under the automobile environment, because vibrations and the impact that produce when the vehicle is running, through the connector assembly that possesses the function of floating that this embodiment provided, cooperation return wall, coaxial connector and public end connector can automatic compensation position deviation, guarantee in the train travel in-process, signal between on-vehicle communication equipment and the circuit infrastructure remains stable and reliable connection throughout.

In different frequency tests, the coaxial connector can reach corresponding test standards, particularly in a 9G high-frequency environment, the coaxial connector is arranged through the structure, and the characteristic impedance of the connector is controlled to achieve higher impedance matching with the output end, so that insertion loss, return loss and standing wave ratio are ensured to meet the corresponding test standards.

As shown in fig. 16, which is a characteristic impedance test chart of the connector assembly, the abscissa is the inverse frequency, the unit is ns, the ordinate is the characteristic impedance, the unit is Ω, seven response time points are selected in the abscissa in the chart, and are respectively 0.0444ns, 0.1556ns, 0.2222ns, 0.0000ns, 0.0889ns and 0.1778ns, 0.3111ns, the measured characteristic impedances are 51.4373 Ω, 49.9216 Ω, 50.3207 Ω, 50.8335 Ω, 50.1238 Ω, 51.9812 Ω, 50.0628 Ω, which all meet the test standard at 50Ω±5Ω, and further meet 50Ω±2Ω, the maximum deviation is 1.9812 Ω, wherein the measured abscissa values of the floating member are 0.0444ns, 51.4373 Ω: providing a margin of variation in floating;

The results are shown in Table one below:

table one:

Selecting points	M1	M2	M3
				Characteristic impedance	51.43	49.92	50.32

Wherein M1 is a test selection point at the floating member, and M2 and M3 are test results of a male connector (not shown in the figure), which all meet test standards.

As shown in fig. 17, for the insertion loss test chart of the connector, s21=b2/a1=output power/input power, the abscissa is frequency, the unit is GHz, the ordinate is the "scattering" degree of amplitude or phase, the unit is dB, the upper curve is the test line of insertion loss, and frequency points are selected in the chart: the corresponding insertion loss values of 3G, 6G, 8G and 9G are-0.0402 dB, -0.1017dB, -0.1276dB and-0.2972 Db respectively.

The results are shown in Table two below:

And (II) table:

frequency (GHz)	SPEC@3G	SPEC@6G	SPEC@8G	SPEC@9G
					Test analysis values	-0.0402dB	-0.1017dB	-0.1276dB	-0.2972dB

As can be seen from table two, the connector test results of the present embodiment can meet the standard in the test cases corresponding to 3G, 6G, 8G, and 9G.

As shown in fig. 18, which is a return loss test chart of the connector assembly, s11=b1/a1=reflected power/incident power, S11 represents an input end reflection coefficient in the case of output end termination matching, the abscissa represents frequency, the unit is GHz, the ordinate represents the degree of "scattering" of amplitude or phase, the unit is dB, wherein the lowest curve is a test value curve, the upper curve and the broken line are test standard lines and comparative examples, and frequency points are selected in the chart respectively: 2G, 2.5G, 3G, 4.2G, 6G and 9G, and the return loss, the test standard value and the safety margin corresponding to the embodiment are shown in the following Table III:

Table three:

As can be seen from table three, the return loss test results of the connector of the present embodiment can meet the standard and leave a certain safety margin when the test standards of USCAR-17DC To 6g and Va l eo DC To 4.2G, USCAR-49DC To 9g are corresponding.

As shown in fig. 19, a standing wave ratio test chart of a connector assembly is shown, wherein the abscissa is frequency, the unit is GHz, the ordinate is ratio, the lower two curves are test curves, the upper broken line is a standard value, and frequency points are selected in the chart respectively: 2G, 3G, 6G, 9G, the corresponding standing wave ratios and test standard values are shown in Table IV below:

Table four:

frequency (GHz)	SPEC@2G	SPEC@3G	SPEC@6G	SPEC@9G
					Test analysis values	1.0489	1.0787	1.2151	1.51

As can be seen from table four, the standing-wave ratio test results of the connector in this embodiment can meet the standard when the test standards of 2G, 3G, 6G and 9G are corresponding.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.

Claims (12)

1. A high frequency coaxial connector, comprising:

a base mechanism, comprising: the shielding device comprises an outer shell, a first sleeve body arranged in the outer shell, and a shielding piece embedded in the first sleeve body, wherein an accommodating cavity is formed in the outer shell;

The floating mechanism can be floatably accommodated in the accommodating cavity and comprises: the elastic terminal comprises a plate body which is spirally arranged along the axial direction, and the shielding piece is coaxially arranged on the plate body in a surrounding mode.

2. A high frequency coaxial connector according to claim 1, wherein: the elastic terminal further includes: the connector comprises a limiting piece, a plug connector, a floating piece and a first welding piece, wherein the limiting piece is clamped in the second sleeve body, the plug connector and the floating piece are respectively arranged at two ends of the limiting piece, the first welding piece is connected to the end part of the floating piece, the plug connector is used for being plugged with a male end connector to be connected, the floating piece is a plate body which is axially and spirally arranged, and the floating piece is used for axially and radially floating the plug connector.

3. A high frequency coaxial connector according to claim 1, wherein: the thickness direction of the plate body is parallel to the radial direction of the shielding piece, the width direction of the plate body is parallel to the axial direction of the shielding piece, and the spiral angle of the plate body is smaller than 360 degrees.

4. A high frequency coaxial connector according to claim 2, wherein: the outer conductor includes: the limiting ring, a plurality of groups set up in the first elastic wall subassembly and the second elastic wall subassembly of limiting ring both sides, every group first elastic wall subassembly includes two first elastic walls that the interval set up, and connect in every group two first elastic wall tip first butt joint portion, every second elastic wall subassembly includes: the second elastic wall and the second butt joint part are connected to the end part of the second elastic wall.

5. The high frequency coaxial connector of claim 4, wherein: an interval space is formed between the adjacent first elastic wall assemblies, the lower side wall of the interval space comprises a first abutting surface, the second sleeve body is provided with a first protrusion abutted to the first abutting surface, a third elastic wall is arranged between the first elastic walls in each group of elastic wall assemblies, the third elastic wall is elastically abutted to the outer surface of the second sleeve body, and the second sleeve body is provided with a containing groove matched with the third elastic wall.

6. A high frequency coaxial connector according to claim 2, wherein: the lower end of the limiting piece is inwards bent to form a plurality of first bending parts, a plurality of first ribs are axially arranged in the second sleeve body, clamping grooves are formed in the end parts of the first ribs, the upper end of the limiting piece is clamped in the clamping grooves, a first clearance which axially penetrates through is formed in the peripheral side of the limiting piece, and at least one clamping groove is clamped with the limiting piece at a position close to the first clearance.

7. A high frequency coaxial connector according to claim 1 or 6, wherein: the elastic terminal is further provided with a fourth bulge, the fourth bulge is arranged on the limiting piece, the second sleeve body is provided with a second abutting surface for stopping the lower end of the fourth bulge, and a stopping gap is reserved between the fourth bulge and the second abutting surface.

8. A high frequency coaxial connector according to claim 2, wherein: the plug connector comprises a plurality of fourth elastic walls, the fourth elastic walls taper and narrow towards the end parts of the fourth elastic walls, and the end parts of the fourth elastic walls are provided with plug guiding parts which are bent outwards.

9. A high frequency coaxial connector according to claim 1, wherein: the outer shell is further provided with a plurality of return walls, the return walls are connected to the outer shell, the end portions of the return walls are elastically abutted to the outer conductor, and the return walls are elastically abutted to the outer shell.

10. A high frequency coaxial connector according to claim 1, wherein: the lower extreme of the first cover body is offered the first groove of dodging and is used for first weldment to pass through, the second groove of dodging is offered to the shell body and is used for supplying the shield to pass through, the bottom of shell body, first weldment and shield is located the coplanar.

11. A high frequency coaxial connector according to claim 1, wherein: the coaxial connector is further sleeved with an adsorption cover, the adsorption cover is covered on the outer side of the outer shell, a second bulge is arranged on the periphery of the first sleeve body and used for being abutted to the outer shell, a third rib is axially arranged in the adsorption cover, and the third rib penetrates through the interval space and is abutted to the second sleeve body.

12. A connector assembly comprising the coaxial connector of any one of claims 1-11, and further comprising a male connector, the male connector and the coaxial connector being mated.