Multi-core welding-free vertical surface-mounted radio frequency connector and connector socket

Abstract

The utility model relates to a multi-core welding-free vertical surface-mounted radio frequency connector and a connector socket, the connector socket comprises a socket housing, the socket housing is made of a conductive material, a plurality of socket mounting hole sites are arranged in the socket housing, an insulator is fixed in each socket mounting hole site, and the socket mounting hole sites are connected with the insulator. The insulator is pressed and fixed in the socket mounting hole position by the conductive first shell, an elastic inner conductor is also fixed in the insulator, and the tail part of the elastic inner conductor is an elastic contact part which is in elastic contact with the printed board. The socket of the welding-free vertical surface-mounted radio frequency connector is formed by assembling the elastic inner conductor, the insulator, the shell and other parts, the elastic inner conductor is in contact with the printed board bonding pad, elastic connection with the bonding pad is achieved through an elastic needle structure, and virtual connection can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a multi-core solder-free vertical surface-mount radio frequency connector and a connector socket. Background Art

[0002] Multi-core vertical surface mount RF connectors are mainly used in the testing field to achieve high-frequency / high-speed performance testing. At present, this type of connector mostly uses a welding structure to achieve a fixed connection with the printed circuit board. When multiple cores are used, due to the warping of the printed circuit board, there is a risk of cold soldering between the inner conductor of individual links and the printed circuit board. Summary of the invention

[0003] A multi-core solderless radio frequency connector is now proposed to solve the solderless interconnection with a printed circuit board and improve the reliability and maintainability of the termination between the radio frequency connector and the printed circuit board.

[0004] The purpose of the utility model and the technical problem to be solved are achieved by adopting the following technical solutions. According to the utility model, a multi-core solder-free vertical surface mount RF connector socket is provided, which includes a socket housing, the socket housing is made of conductive material, and a plurality of socket mounting holes are arranged in the socket housing, each socket mounting hole is fixed with an insulator, the insulator is pressed and fixed in the socket mounting hole by a conductive first housing, and an elastic inner conductor is also fixed in the insulator, and the tail of the elastic inner conductor is an elastic contact part for elastically contacting with a printed circuit board.

[0005] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0006] In the aforementioned multi-core solder-free vertical surface-mount radio frequency connector socket, annular grooves for impedance discontinuity compensation are provided on the front end face and the rear end face of the insulator.

[0007] The aforementioned multi-core solder-free vertical surface mount RF connector socket, the outer periphery of the elastic inner conductor is provided with barbs that cooperate with the stop limit portion in the insulator to achieve axial rearward limit and a limit surface that cooperates with the tail end face of the insulator to achieve axial forward limit.

[0008] The aforementioned multi-core solder-free vertical surface-mount RF connector socket, the socket mounting hole is a stepped hole structure, the rear end of the first shell is located in the socket mounting hole, and the outer circle of the end face of the rear end of the first shell is also stopped and limited by the stop surface in the socket mounting hole.

[0009] The aforementioned multi-core solder-free vertical surface mount RF connector socket, the first shell includes, from front to back, a first straight hole segment, a second inclined hole segment, a second straight hole segment and a third straight hole segment, and the inner diameter of the above segments gradually decreases in the order of their distribution.

[0010] The aforementioned multi-core solder-free vertical surface mount RF connector socket has guide structures protruding from both sides of the front end of the socket shell, which can play a guiding role when plugging with the adapter plug.

[0011] The aforementioned multi-core solder-free vertical surface-mount RF connector socket further has a threaded hole in the guide structure, the front end of the threaded hole is used to achieve locking with the adapter plug, and the rear end is used to achieve locking with the printed circuit board.

[0012] In the aforementioned multi-core solder-free vertical surface mount RF connector socket, the two corners on the outer side of the guide structure that are in contact with the adapter end plug are both chamfered, and the two chamfers are not equal.

[0013] The aforementioned multi-core solder-free vertical surface mount RF connector socket has at least two positioning posts at the bottom of the socket housing, and the matching positions of the positioning posts on the printed circuit board are unique to prevent the socket from being installed in reverse on the printed circuit board.

[0014] The purpose of the utility model and the technical problem solved by the utility model are also achieved by the following technical solutions: A multi-core solder-free vertical surface mount radio frequency connector proposed by the utility model comprises a plug and a socket for front end insertion, and the socket is any of the sockets described above.

[0015] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0016] The aforementioned multi-core solder-free vertical surface mount RF connector, the plug includes a plug housing, and the plug housing cooperates with the socket housing through a concave-convex structure to prevent reverse insertion.

[0017] The aforementioned multi-core solder-free vertical surface-mount RF connector has a front end of the plug shell having a receiving cavity for inserting the front end of the socket shell, and the front end of the locking bolt installed at the rear of the plug shell enters the receiving cavity and is locked with the threaded hole in the front end guide structure of the socket shell.

[0018] The aforementioned multi-core solder-free vertical surface mount RF connector has a plurality of plug mounting holes adapted to the plug contacts on the plug housing, and the plug contacts are fixed in the plug mounting holes by a pressing plate.

[0019] The aforementioned multi-core solder-free vertical surface mount RF connector has a hole with one side open at the position corresponding to the pressure plate and the plug contact. After the tail of each plug contact is terminated with the cable, it is installed into the hole of the pressure plate from the open side.

[0020] The aforementioned multi-core solder-free vertical surface mount RF connector has a front end of a plug mounting hole that is a beveled step hole. The beveled step hole can cooperate with the outer circular bevel structure of the plug contact to guide the plug contact to align, while also preventing the plug contact from moving forward.

[0021] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0022] The utility model discloses a solder-free vertical surface mount radio frequency socket which is assembled from parts such as an elastic inner conductor, an insulator, and a shell. The elastic inner conductor contacts with a printed circuit board pad and adopts a spring pin structure to realize elastic connection with the pad, which can effectively prevent false connection.

[0023] The end surface of the socket housing of the utility model adopts two positioning columns with different diameters, which can ensure the position accuracy of the connector and the printed board and prevent the connector from being reversely installed on the printed board.

[0024] The utility model discloses a multi-core solder-free vertical surface-mount radio frequency connector, which realizes solder-free vertical mounting of a radio frequency socket and a printed circuit board, and cooperates with a plug connector to lead out a test port, thereby realizing the testing of multi-link signals.

[0025] The connector socket and the plug of the utility model are also provided with a multi-stage anti-reverse insertion structure to ensure the accurate insertion of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the composition of the multi-core solder-free vertical surface mount RF connector of the utility model;

[0027] Figure 2 This is a schematic diagram of the plug structure of the multi-core solder-free vertical surface mount radio frequency connector of the utility model;

[0028] Figure 3 It is a cross-sectional view of the socket portion;

[0029] Figure 4 is a schematic diagram of an insulator;

[0030] Figure 5 is a schematic diagram of an elastic inner conductor;

[0031] Figure 6 The following is a schematic diagram of the plug;

[0032] Figure 7 This is a partial exploded view of the plug;

[0033] Figure 8 is a partial cross-sectional view of the plug;

[0034] Fig. 9 for Figure 8 A partial enlarged view of

[0035] Fig.10 It is a schematic diagram of the matching between the plug end pressure plate and the contact piece.

[0036]

Main component symbol description

[0037] 1: Socket 11: Socket housing 111: Socket installation hole

[0038] 1111: Step surface 1112: Stop surface 112: Guide structure

[0039] 1121: threaded through hole 1122: first chamfer 1123: second chamfer

[0040] 113: keyway 114: positioning column 12: first housing

[0041] 121: first straight hole section 122: inclined hole section 123: second straight hole section

[0042] 124: third straight hole section 13: insulator 131: first ring groove

[0043] 132: second annular groove 14: inner conductor 141: barb

[0044] 142: Limiting surface 143: Plug end 144: Spring needle

[0045] 145: Connection

[0046] 2: Plug 21: Plug housing 211: Groove structure

[0047] 2111: Third chamfer 2112: Fourth chamfer 212: Boss

[0048] 213: Accommodation cavity 214: Plug installation hole 2141: Inclined step hole

[0049] 22: Plug contact 221: Step 222: Outer circle slope structure

[0050] 23: Press plate 231: Slot

[0051] 24: Screw 25: Locking bolt DETAILED DESCRIPTION

[0052] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the multi-core solderless vertical surface mount RF connector proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0053] See also Figure 1-10, which is a schematic diagram of the structure of each part of the multi-core solder-free vertical surface-mount RF connector of the utility model, the RF connector includes a socket 1 and a plug 2 for front-end insertion, wherein the plug 2 includes a plug housing 21 and a plug contact 2 fixedly assembled in the plug housing 21. The socket 1 includes a socket housing 11 made of conductive material, and a plurality of socket mounting holes 111 are provided on the socket housing 11, and each socket mounting hole 111 is fixed with a first housing 12 capable of conducting electricity, an insulator 13 for achieving insulation support, and an elastic inner conductor 14 for achieving RF signal transmission. The elastic inner conductor 14 is located in the insulator 13 and is axially limited backward by the insulator 13 to prevent it from retreating when plugged with the matching contact. Specifically, the outer periphery of the elastic inner conductor 14 is provided with a barb 141, and the insulator 13 is provided with a stop and limit portion that cooperates with the barb 141 to limit the position. When the elastic inner conductor 14 is installed into the insulator from the tail of the insulator 13, the barb 141 plays a guiding role in the assembly process. When assembled in place, the barb 141 is axially stopped and limited by the stop and limit portion in the insulator 13. At this time, the elastic inner conductor 14 also stops and cooperates with the end face of the tail of the insulator 13 through the limit surface 142 at its rear end to achieve axial forward limitation. In this embodiment, the elastic inner conductor 14 includes a plug-in end 143 at the front end, a spring pin 144 at the tail end, and a connecting portion 145 connecting the plug-in end 143 and the spring pin 144. The limit surface 142 is formed by the diameter change of the connecting portion 145, and the connecting portion 145 is a stepped shaft structure with a small front and a large rear. The barb 141 is located at the small diameter section of the stepped shaft structure. The socket realizes elastic vertical solder-free connection with the printed circuit board through the elastic pin 144 at the tail of the elastic inner conductor 14.

[0054] In this embodiment, the socket mounting hole 111 is a stepped hole, and the insulator 13 is pressed and fixed in the socket mounting hole 111 by the first housing 12, that is, the tail of the insulator 13 is axially stopped and limited with the step surface 1111 in the socket mounting hole 111, and the front end is pressed and limited by the first housing 12. The tail of the first housing 12 is located in the socket mounting hole 111, and the upper end surface of the insulator 13 is pressed by its tail end surface. Preferably, the socket mounting hole 111 also has a stop surface 1112 for stopping and limiting the outer ring of the tail end surface of the first housing 12. The front end of the first shell 12 is a stepped hole structure that gradually shrinks from front to back, wherein the front end is a first straight hole section 121, and the front end of the first straight hole section 121 is provided with a chamfer to facilitate the entry of the plug end contact; connected to the first straight hole section 121 is an inclined hole section 122 that gradually shrinks from front to back, the end of the inclined hole section 122 is connected to the second straight hole section 123, and the tail of the second straight hole section 123 is connected to the third straight hole section 124. The front end of the first shell 12 is also formed with a stepped surface 125 on the outer periphery for blocking and matching with the front end surface of the socket shell 11. The first shell 12 is fixed in the socket mounting hole 111 of the socket shell 11 by force or fixed on the socket shell 11 by other means.

[0055] In this embodiment, a first annular groove 131 is provided on the front end surface of the insulator 13, and a second annular groove 132 is provided on the rear end surface for impedance discontinuity compensation. The first annular groove 131 is located in the inner ring of the insulator and communicates with the hole on the insulator 13 that is adapted to the elastic inner conductor 14, and the inner diameter of the first annular groove 131 is consistent with the inner diameter of the third straight hole section on the first shell 12. There is a gap between the second annular groove 132 and the hole on the insulator 13 that is adapted to the elastic inner conductor 14, and there is also a gap between the second annular groove 132 and the outer peripheral edge of the insulator 13. The limiting surface 142 of the elastic inner conductor 14 and the part of the rear of the insulator located inside the second annular groove 132 are blocked and limited.

[0056] The front sides of the socket housing 11 also protrude with guide structures 112, which can cooperate with the front cavity of the plug housing 21 to guide when the plug and socket are plugged in. The guide structure 112 is provided with a threaded through hole 1121, the front end of which is used to achieve locking with the locking bolt 25 of the plug 2, and the other end is used to achieve fastening and locking with the screws of the printed circuit board.

[0057] The surface of the guide structure 112 facing away from the other guide structure 112 and its adjacent surface are both chamfered, one of which is a first chamfer 1122 and the other is a second chamfer 1123, and the first chamfer 1122 and the second chamfer 1123 are not equal. The differentiated chamfering mechanism on the guide structure 112 can prevent the plug 2 and the socket 1 from being plugged in reverse. The two ends of the plug housing 21 are respectively provided with groove structures 211 adapted to the guide structure 112, and the inner side of the groove structure 211 is respectively provided with a third chamfer 2111 adapted to the first chamfer and a fourth chamfer 2112 adapted to the second chamfer, so as to achieve the guidance of the guide structure 112 when entering the plug housing 21, and to prevent the plug housing 21 and the socket housing 11 from being plugged in reverse.

[0058] Furthermore, the socket housing 11 and the plug housing 21 of the utility model also prevent mis-insertion by cooperating with the concave-convex structure. Specifically, a key slot 113 is provided on one side of the socket housing 11, and a boss 212 adapted thereto is provided at a corresponding position of the plug housing 21. When the two are plugged together, the key slot 113 and the boss 212 cooperate to prevent mis-insertion. Preferably, the key slot 113 of the utility model is located on the outside of the socket housing 11, which is easy to identify and can be used by the user to perform mis-insertion identification before plugging.

[0059] At least two positioning posts 114 are also provided at the bottom of the socket housing 11, and the positioning posts 114 are used to achieve positioning with the position of the printed circuit board. In order to prevent the socket from being installed in reverse on the printed circuit board and ensure the one-to-one correspondence of the test links, the sizes of at least two positioning posts 114 are inconsistent, so that each positioning post 114 is uniquely matched with the positioning hole on the printed circuit board. Preferably, there are two positioning posts 114, and the diameters of the two positioning posts 114 are φa and φb respectively, and φa≠φb. Preferably, the positioning posts 114 are integrally formed at the bottom of the socket housing 11.

[0060] The front end of the plug housing 21 has a receiving cavity 213 for inserting the front end of the socket housing 11, and the third chamfer 2111 and the fourth chamfer 2112 are both distributed in the receiving cavity 213 to achieve the guide matching and anti-reverse insertion with the corresponding chamfers on the socket end guide structure 112. The bosses 212 are also distributed on the inner wall of the receiving cavity 213.

[0061] The plug housing 21 is provided with a plurality of plug mounting holes 214 adapted to the plug contacts 22. The plug mounting holes 214 are stepped holes, and the plug contacts 22 are fixed in the plug mounting holes 214 by means of a pressing plate 23. Specifically, the pressing plate 23 is fixed to the rear of the plug housing 21 by means of a screw 24. The pressing plate 23 can press the backward step 221 on the plug contacts 22 to limit the axial backward position of the plug contacts 22. The front end of the plug contacts 22 also has an outer circular inclined surface structure 222. The front end of the plug mounting holes 214 is an inclined surface step hole 2141 adapted to the outer circular inclined surface structure 222. The inclined surface step hole 2141 cooperates with the outer circular inclined surface structure 222 at the front end of the plug contacts 22 to limit the axial forward position. The inclined surface step hole 2141 can also cooperate with the outer circular inclined surface structure 222 of the plug contacts to guide the plug contacts 22 to align and play a certain limiting role.

[0062] In this embodiment, the hole on the pressure plate 23 that is adapted to the plug contact 22 is a side slotted structure. After the tail end of each plug contact 22 is terminated with the cable, it is respectively installed into the pressure plate 23 through the slot 231 on one side of each through hole of the pressure plate 23. The step 221 on the outer periphery of the plug contact 22 and the front end surface of the pressure plate 23 are stopped and limited. The pressure plate 23 is fixed to the tail end of the plug housing 21 by screws 24. At the same time, the plug contact 22 is installed in the plug mounting hole 214. The outer circular inclined surface structure 222 at the front end of the plug contact 22 cooperates with the inclined step hole at the front end of the plug contact mounting hole to limit the position.

[0063] In other embodiments of the utility model, the anti-reverse insertion matching of the plug housing and the socket housing may adopt other structural forms, such as by limiting the number or size of the concave and convex matching guiding structures to make the matching mode unique; the tail of the inner conductor may also be a wool button or other elastic contact part that can achieve axial floating, so as to meet the demand for solder-free elastic contact with the printed circuit board.

[0064] In the embodiment of the utility model, a locking bolt 25 is also provided on the plug housing 21. The locking bolt 25 is installed from the rear of the plug housing 21, and the front end enters the front end accommodating cavity 213 of the plug housing 21 and is locked with the threaded hole in the socket end guide structure 112 entering the accommodating cavity.

[0065] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-core solder-free vertical surface mount radio frequency connector socket, comprising a socket housing, characterized in that: The socket housing is made of a conductive material, and a plurality of socket mounting holes are arranged in the socket housing. An insulator is fixed in each socket mounting hole. The insulator is pressed and fixed in the socket mounting hole by the conductive first housing, and an elastic inner conductor is also fixed in the insulator. The tail of the elastic inner conductor is an elastic contact portion for elastically contacting the printed circuit board.

2. The multi-core solder-free vertical surface mount RF connector socket according to claim 1, characterized in that: The front end face and the rear end face of the insulator are both provided with annular grooves for impedance discontinuity compensation.

3. The multi-core solder-free vertical surface mount RF connector socket according to claim 1, characterized in that: The outer periphery of the elastic inner conductor is provided with barbs which cooperate with the stop limit portion in the insulator to realize axial rearward limit and a limit surface which cooperates with the tail end face of the insulator to realize axial forward limit.

4. The multi-core solder-free vertical surface mount RF connector socket according to claim 1, characterized in that: The socket mounting hole is a stepped hole structure, the tail of the first shell is located in the socket mounting hole, and the outer circle of the end surface of the tail of the first shell is also stopped and limited by the stop surface in the socket mounting hole.

5. The multi-core solder-free vertical surface mount RF connector socket according to claim 4, characterized in that: The first shell includes a first straight hole section, a second inclined hole section, a second straight hole section and a third straight hole section from front to back, and the inner diameters of the above sections gradually decrease in the order of their distribution.

6. The multi-core solder-free vertical surface mount RF connector socket according to claim 1, characterized in that: Both sides of the front end of the socket housing also protrude with guiding structures, which can play a guiding role when plugging with the adapter plug.

7. The multi-core solder-free vertical surface mount RF connector socket according to claim 6, characterized in that: A threaded hole is also provided in the guide structure, the front end of the threaded hole is used to achieve locking with the adapter plug, and the rear end of the threaded hole is used to achieve locking with the printed circuit board.

8. The multi-core solder-free vertical surface mount RF connector socket according to claim 7, characterized in that: The two corners of the outer side of the guide structure that are in contact with the adapter plug are both chamfered, and the two chamfers are not equal.

9. The multi-core solder-free vertical surface mount RF connector socket according to claim 1, characterized in that: At least two positioning posts are also provided at the bottom of the socket housing. The matching positions of the positioning posts on the printed circuit board are unique, so as to prevent the socket from being installed in reverse on the printed circuit board.

10. A multi-core solder-free vertical surface mount radio frequency connector, comprising a front-end plug and a socket, characterized in that: The socket is the socket described in any one of claims 1-9.

11. The multi-core solder-free vertical surface mount RF connector according to claim 10, characterized in that: The plug comprises a plug housing, and the plug housing cooperates with the socket housing through a concave-convex structure to prevent reverse insertion.

12. The multi-core solder-free vertical surface mount RF connector according to claim 11, characterized in that: The front end of the plug housing has a receiving cavity for inserting the front end of the socket housing. The front end of the locking bolt installed at the rear end of the plug housing enters the receiving cavity and is locked with the threaded hole in the front end guide structure of the socket housing.

13. The multi-core solder-free vertical surface mount RF connector according to claim 11, characterized in that: The plug housing is provided with a plurality of plug installation holes adapted to the plug contacts, and the plug contacts are pressed and fixed in the plug installation holes by a pressing plate.

14. The multi-core solder-free vertical surface mount RF connector according to claim 13, characterized in that: A hole with one side open is distributed at a position corresponding to the pressure plate and the plug contact. After the tail of each plug contact is terminated with the cable, it is installed into the hole of the pressure plate from the open side.

15. The multi-core solder-free vertical surface mount radio frequency connector according to claim 13, characterized in that: The front end of the plug installation hole is an inclined step hole, which can cooperate with the outer circular inclined surface structure of the plug contact to guide the plug contact to align, and at the same time prevent the plug contact from moving forward.

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