A fakra coaxial connector

Abstract

The utility model discloses a FAKRA coaxial connector, including shell, the main support of connecting in the rear end of shell, be located in the T type copper pipe of main support, the insulator of sleeve joint in T type copper pipe, the needle type bending terminal of being worn in the insulator, T type copper pipe structure is hollow cylindrical pipe body, is provided with annular protruding edge along one port outer side of hollow cylindrical pipe body, and annular protruding edge and hollow cylindrical pipe body are integrally formed, copper pipe positioning hole is equipped in main support, and the rear end of copper pipe positioning hole is equipped with step hole position, and the rear end of main support is equipped with insertion port, and the through -hole position for wearing T type copper pipe is equipped in shell, and T type copper pipe is connected in copper pipe positioning hole with the excess, and the front end of T type copper pipe is worn in the through -hole position, the rear end of main support is equipped with a back cover, and the rear end of back cover and main support is fixedly connected with the limit, realizes the limit fixed in main support of insulator, and the assembly cooperation mode of this scheme is that the tail portion is assembled to the front with the excess, is favorable to the stability of assembly structure.

Description

Technical Field

[0001] This disclosure relates to the field of connector technology, and more particularly to a FAKRA coaxial connector. Background Technology

[0002] FAKRA coaxial connectors are widely used in mobile devices, electronic communications, medical devices, and automotive electronics due to their compact size, lightweight design, reliability, and speed. They typically consist of a shell, a main support, an insulator, and an inner conductor. The inner conductor is housed within the insulator, which in turn is housed within the main support. The front end of the main support is fitted into the shell. To enhance effective isolation from external electromagnetic interference (EMI) and ensure the stability of high-frequency signal transmission (up to 15GHz), a copper tube acts as a shield around the pins of the inner conductor. This copper tube also enhances the connector's mechanical strength, preventing deformation of the socket due to vibration or external forces, and provides stable support for the internal coaxial cable, reducing signal transmission loss. Currently, to reduce component costs, similar products in the industry often use a stamped, single-ring structure for the copper tube, assembled from the head of the main support to the rear. The copper tube is then fixed by marking points on the head of the main support. This marking method risks compromising the integrity and performance of the copper tube, and the unstable holding force of the copper tube in this method poses a risk of dislodgement. Therefore, structural optimization of existing FAKRA coaxial connectors is necessary. Utility Model Content

[0003] In view of this, this solution proposes a FAKRA coaxial connector, which adopts a copper tube with a T-shaped structure and is assembled by interference fit with the tail facing forward. The T-shaped structure plays a limiting and fixing role, eliminating the need for fixing the copper tube with pins, thus better ensuring the stability of the product.

[0004] The specific technical solution of this utility model is as follows: a FAKRA coaxial connector includes a shell, a main support connected to the rear end of the shell, a T-shaped copper tube disposed within the main support, an insulator sleeved within the T-shaped copper tube, and a pin-shaped bent terminal inserted into the insulator. The T-shaped copper tube has a hollow cylindrical tube body with an annular protrusion at one end of the hollow cylindrical tube body, which is integrally formed with the hollow cylindrical tube body. The main support has a copper tube positioning hole, a stepped hole at the rear end of the copper tube positioning hole, and an insertion port at the rear end of the main support. The shell has a through hole for inserting the T-shaped copper tube, which is interference-fitted into the copper tube positioning hole, with the front end of the T-shaped copper tube protruding through the through hole. The rear end of the main support has a rear cover, which is fixedly connected to the rear end of the main support to limit and fix the insulator within the main support.

[0005] Furthermore, the rear end of the outer shell is provided with an insertion interface, and each of the opposite sides of the outer wall of the insertion interface is provided with a cantilever buckle. The front outer wall of the main body bracket is provided with a corresponding snap-fit ​​groove that snaps into the cantilever buckle. The front end of the main body bracket is tightly inserted into the insertion interface, and the copper tube cantilever buckle snaps into the snap-fit ​​groove.

[0006] In one embodiment, the pin-type bent terminal includes two long pin-type bent terminals arranged side by side and two short pin-type bent terminals arranged side by side below the two long pin-type bent terminals. The insulator includes two long insulators and two short insulators. Each long and short insulator is composed of a hollow cylindrical tube and a bent portion connected to the rear end of the hollow cylindrical tube. The bent portion is integrally formed with the hollow cylindrical tube. The rear side of the bent portion is provided with a slot connecting to the rear end of the hollow cylindrical tube. The copper tube positioning holes of the main support include two upper rows of copper tubes arranged aligned on each side. The system includes a tube positioning hole and a lower row of copper tube positioning holes. The upper row of copper tube positioning holes extend towards the rear end of the main support and have long insulator assembly holes. A gap cavity is formed between the rear end of the short insulator and the bent part of the long insulator. Positioning slots are provided on the inner walls of the main support on the left and right sides corresponding to the gap cavity. The rear cover includes a back plate and a limiting plate. There are connecting ribs between the back plate and the limiting plate. The limiting plate is embedded in the gap cavity. The left and right sides of the limiting plate are inserted into the positioning slots. The left and right edges of the back plate are interference-fitted with the insertion port at the rear end of the main support.

[0007] Furthermore, the long needle-type bent terminal and the short needle-type bent terminal are respectively inserted into the hollow round tube. The outer walls of the long needle-type bent terminal and the short needle-type bent terminal are provided with protruding hooks, which are used for the long needle-type bent terminal and the short needle-type bent terminal to be interference-fitted into the long insulator and the short insulator, respectively.

[0008] Furthermore, the outer wall of the hollow cylindrical section of the long insulator and the short insulator is provided with multiple uniformly arranged first protruding ridges extending along the length direction. The first protruding ridges are used for interference connection of the hollow cylindrical section of the long insulator and the short insulator to the T-shaped copper tube.

[0009] Furthermore, the hollow tube portion of the long insulator has multiple uniformly arranged second protruding ridges extending along its length on its outer wall near its rear end. The second protruding ridges are used for the long insulator to be interference-fitted to the wall of the assembly hole of the long insulator.

[0010] Furthermore, the back plate and the limiting plate are provided with outwardly protruding first barb-shaped protrusions on both the left and right sides, and the inner walls of the left and right sides of the insertion port at the rear end of the main body bracket are provided with inwardly protruding second barb-shaped protrusions.

[0011] Furthermore, the upper edge of the insertion port at the rear end of the main support is provided with a downwardly extending arrow-shaped protrusion, and a notch is provided at the middle position of the back plate to be interference-connected with the arrow-shaped protrusion.

[0012] Furthermore, the hollow cylindrical tube body of the T-shaped copper tube has a thickened tube wall near its rear end, forming a stepped surface, and is interference-fitted with the positioning hole of the copper tube through the thickened tube wall.

[0013] The beneficial effects of this utility model are as follows: the FAKRA coaxial connector designed with this scheme, featuring a T-shaped copper tube, enhances the connector's shielding performance, improves the stability of high-frequency signal transmission, and strengthens the connector's mechanical strength, extending the product's service life. In the assembly structure, a T-shaped copper tube is used, with the main support having copper tube positioning holes with stepped apertures. The T-shaped copper tube is interference-fitted with these positioning holes, and the insulator is fitted inside the T-shaped copper tube. A pin-type bent terminal is inserted into the insulator, and then the rear cover is fixedly connected to the rear end of the main support, limiting and fixing the insulator within the main support. This scheme allows for assembly of the main support from the rear end of the housing, insertion of the T-shaped copper tube into the rear end of the main support, insertion of the insulator into the rear end of the T-shaped copper tube, insertion of the pin-type bent terminal into the rear end of the insulator, and finally assembly of the rear cover at the rear end of the main support, thus completing the overall connector assembly. The assembled structure is stable, and the T-shaped copper tube is not easily pulled out or retracted during high-frequency insertion, which helps improve product quality. Attached Figure Description

[0014] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0015] Figure 1 This is an exploded view of the connector structure disclosed in an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the rear end structure of the outer shell disclosed in an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the rear structure of the main support disclosed in an embodiment of this utility model.

[0018] Figure 4 This is a bottom view of the connector assembly structure in the separated state of the back cover, as disclosed in an embodiment of this utility model.

[0019] Figure 5 This is a bottom view schematic diagram of the connector assembly structure disclosed in an embodiment of this utility model.

[0020] Figure 6 This is a bottom view of the connector assembly structure disclosed in an embodiment of this utility model.

[0021] Figure 7 for Figure 6The connector assembly structure AA is shown in the cross-sectional view.

[0022] Figure 8 for Figure 6 The connector assembly structure BB is shown in the cross-sectional view. Detailed Implementation

[0023] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0024] Please refer to Figures 1 to 8This is a specific embodiment of a FAKRA coaxial connector disclosed in this technical solution. The FAKRA coaxial connector includes a housing 1, a main support 2 connected to the rear end of the housing 1, a T-shaped copper tube 3 disposed within the main support 2, an insulator 4 sleeved within the T-shaped copper tube 3, and a pin-type bent terminal 5 passing through the insulator 4. The T-shaped copper tube 3 has a hollow cylindrical tube body 31, and an annular flange 32 is provided on the outer edge of one end of the hollow cylindrical tube body 31. The annular flange 32 is integrally formed with the hollow cylindrical tube body 31. The main support 2 is provided with a copper tube positioning hole 22, and the rear end of the copper tube positioning hole 22 is provided with a stepped hole 2201. The rear end of the main support 2 is provided with an insertion port 21. The outer shell 1 is provided with a through hole 12 for inserting a T-shaped copper tube 3. The T-shaped copper tube 3 is interference-fitted into the copper tube positioning hole 22, and the front end of the T-shaped copper tube 3 passes through the through hole 12. The rear end of the main support 2 is provided with a rear cover 6, which is fixedly connected to the rear end of the main support 2 to limit and fix the insulator 4 inside the main support 2. Specifically, the pin-type bent terminal 5 includes two long pin-type bent terminals 51 arranged side by side and two short pin-type bent terminals 52 arranged side by side below the two long pin-type bent terminals 51. The insulator 4 includes two long insulators 41 and two short insulators 42. Both the long insulators 41 and the short insulators 42 are composed of a hollow cylindrical tube and a bent portion connected to the rear end of the hollow cylindrical tube. The bent portion is integrally formed with the hollow cylindrical tube. The rear side of the bent portion is provided with a slot 401 that connects to the rear end of the hollow cylindrical tube. The copper tube positioning holes 22 of the main support 2 include two upper row copper tube positioning holes 221 and two lower row copper tube positioning holes 221 arranged in alignment. 22. The upper copper tube positioning hole 221 extends to the rear end of the main body bracket 2 and has a long insulator assembly hole 2211. A gap cavity 23 is formed between the rear end of the short insulator 42 and the bent part of the long insulator 41. Positioning slots 231 are provided on the inner walls of the main body bracket 2 on the left and right sides of the gap cavity 23. The rear cover 6 includes a back plate 61 and a limiting plate 62. A connecting rib 63 is formed between the back plate 61 and the limiting plate 62. The limiting plate 62 is embedded in the gap cavity 23. The left and right sides of the limiting plate 62 are inserted into the positioning slots 231. The left and right edges of the back plate 61 are interference-fitted with the insertion port 21 at the rear end of the main body bracket 2. The limiting plate 62 is inserted into the spacer cavity 23 to block the rear end of the short insulator 42. At the same time, the connecting rib 63 of the rear cover 6 is inserted into the gap between the bent parts of the two parallel long insulators 41, and the back plate 61 of the rear cover 6 and the insertion port 21 at the rear end of the bracket body 2 are connected by an interference fit, so that the long insulator 41 and the short insulator 42 are stably assembled in the main bracket 2.

[0025] In this design, a T-shaped copper tube 3 with a T-shaped structure is used. The main support 2 is provided with a copper tube positioning hole 22 with a stepped hole position 2201, and the T-shaped copper tube 3 is interference-fitted with the copper tube positioning hole 22. The insulator 4 is sleeved inside the T-shaped copper tube 3, and the pin-type bent terminal 5 is inserted inside the insulator 4. The insulator 4 is then fixedly connected to the rear end of the main support 2 through the rear cover 6. The rear cover 6 limits and fixes the insulator 4 inside the main support 2, so that the main support 2 is assembled from the tail (rear end) of the outer shell 1, the T-shaped copper tube 3 is inserted from the rear end of the main support 2, the insulator 4 is inserted from the rear end of the T-shaped copper tube 3, the pin-type bent terminal 5 is inserted from the rear end of the insulator 4, and finally the rear cover 6 is assembled at the rear end of the main support 2, thereby completing the overall assembly of the connector. After the structural components are assembled, they are stable. The T-shaped copper tube 3 is not easy to pull out or move backward during high-frequency insertion, which helps to improve the quality of the product.

[0026] Please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 As a preferred assembly structure for the outer shell 1 and the main support 2, the rear end of the outer shell 1 is provided with an insertion interface 11, and each of the opposite sides of the outer wall of the insertion interface 11 is provided with a cantilever buckle 110. The front end of the main support 2 is provided with a snap-fit ​​groove 201 corresponding to snap-fit ​​with the cantilever buckle 110. The front end of the main support 2 is tightly inserted into the insertion interface 11, and the copper tube cantilever buckle 110 snaps into the snap-fit ​​groove 201, realizing a quick plug-in assembly.

[0027] Please refer to Figure 1 , Figure 8 Preferably, the long needle-type bent terminal 51 and the short needle-type bent terminal 52 are respectively inserted into the hollow cylindrical section. The outer walls of the long needle-type bent terminal 51 and the short needle-type bent terminal 52 are provided with protruding hooks 501 for interference fit of the long needle-type bent terminal 51 and the short needle-type bent terminal 52 into the long insulator 41 and the short insulator 42, respectively. The outer walls of the hollow cylindrical sections of the long insulator 41 and the short insulator 42 are provided with multiple uniformly arranged first protruding ribs 402 extending along the length direction. The first protruding ribs 402 are used for interference fit of the hollow cylindrical sections of the long insulator 41 and the short insulator 42 into the T-shaped copper tube 3. The outer wall of the hollow cylindrical section of the long insulator 41 near its rear end is provided with multiple uniformly arranged second protruding ribs 403 extending along the length direction. The second protruding ribs 403 are used for interference fit of the long insulator 41 into the wall of the long insulator mounting hole 2211. The long needle-type bent terminal 51 and the short needle-type bent terminal 52 are securely installed inside the long insulator 41 and the short insulator 42, and the long insulator 41 and the short insulator 42 are securely installed inside the T-shaped copper tube 3 and the main support 2.

[0028] Please refer to Figure 1 , Figure 3 and Figure 5Preferably, both the left and right sides of the back plate 61 and the limiting plate 62 are provided with outwardly protruding first barb-shaped protrusions 601, and the inner walls of the left and right sides of the insertion port 21 at the rear end of the main body bracket 2 are provided with inwardly protruding second barb-shaped protrusions 211. The upper edge of the insertion port 21 at the rear end of the main body bracket 2 is provided with a downwardly extending arrow-shaped protrusion 212, and a notch 602 corresponding to the middle position of the back plate 61 is provided for interference connection with the arrow-shaped protrusion 212.

[0029] Please refer to Figure 1 and Figure 8 Preferably, the hollow cylindrical tube body 31 of the T-shaped copper tube 3 has a thickened tube wall portion 311 near its rear end, forming a stepped surface, and is interference-fitted with the copper tube positioning hole 22 through the thickened tube wall portion 311.

[0030] Preferably, both the long pin-type bent terminal 51 and the short pin-type bent terminal 52 are 90° bent connecting terminals, with their lower ends bent to the bottom of the connector and protruding as pins for connecting the circuit board. A positioning post is provided at the bottom of the main body bracket 2. Both the outer shell 1 and the main body bracket 2 are integrally injection molded from plastic material. In this solution, the long insulator 41 and the short insulator 42 are manufactured as separate accessories, which can be applied to the preparation of single-hole coaxial connectors and helps to reduce product production costs.

[0031] The parts not described in detail in this technical solution specification are obvious to those skilled in the art and can be supplemented and improved based on existing technical knowledge. At the same time, those skilled in the art should understand that the above embodiments are merely preferred embodiments of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A FAKRA coaxial connector, characterized in that, The device includes an outer shell (1), a main support (2) connected to the rear end of the outer shell (1), a T-shaped copper tube (3) disposed within the main support (2), an insulator (4) sleeved within the T-shaped copper tube (3), and a pin-shaped bent terminal (5) inserted within the insulator (4). The T-shaped copper tube (3) has a hollow cylindrical tube body (31) with an annular protrusion (32) on the outer edge of one end of the hollow cylindrical tube body (31), and the annular protrusion (32) is integrally formed with the hollow cylindrical tube body (31). The main support (2) has a copper tube positioning hole (22). The rear end of the copper tube positioning hole (22) is provided with a stepped hole (2201), the rear end of the main support (2) is provided with an insertion port (21), the outer shell (1) is provided with a through hole (12) for connecting the T-shaped copper tube (3), the T-shaped copper tube (3) is interference-fitted into the copper tube positioning hole (22), and the front end of the T-shaped copper tube (3) passes through the through hole (12); the rear end of the main support (2) is provided with a rear cover (6), the rear cover (6) is fixedly connected to the rear end of the main support (2), so that the insulator (4) is fixedly positioned in the main support (2).

2. The FAKRA coaxial connector according to claim 1, characterized in that, The rear end of the outer shell (1) is provided with a plug-in interface (11), and the outer walls of the plug-in interface (11) are provided with cantilever buckles (110) on opposite sides. The front end of the main support (2) is provided with a snap-fit ​​groove (201) corresponding to snap-fit ​​with the cantilever buckle (110). The front end of the main support (2) is tightly fitted into the plug-in interface (11), and the copper tube cantilever buckle (110) snaps into the snap-fit ​​groove (201).

3. The FAKRA coaxial connector according to claim 1, characterized in that, The pin-type bent terminal (5) includes two long pin-type bent terminals (51) arranged side by side and two short pin-type bent terminals (52) arranged side by side below the two long pin-type bent terminals (51). The insulator (4) includes two long insulators (41) and two short insulators (42). The long insulators (41) and the short insulators (42) are both composed of a hollow round tube and a bent part connected to the rear end of the hollow round tube. The bent part is integrally formed with the hollow round tube. The rear side of the bent part is provided with a slot (401) connecting to the rear end of the hollow round tube. The copper tube positioning hole (22) of the main support (2) includes two upper row copper tube positioning holes (221) and two lower row copper tube positioning holes (222) arranged in alignment. The upper row copper tube positioning hole (221) is provided with two upper row copper tube positioning holes (221) and two lower row copper tube positioning holes (222). The positioning hole (221) extends to the rear end of the main support (2) and has a long insulator assembly hole (2211). A spacer cavity (23) is formed between the rear end of the short insulator (42) and the bent part of the long insulator (41). The inner wall of the main support (2) on the left and right sides of the spacer cavity (23) is provided with positioning slots (231). The rear cover (6) includes a back plate (61), a limiting plate (62), and a connecting rib (63) between the back plate (61) and the limiting plate (62). The limiting plate (62) is embedded in the spacer cavity (23). The left and right sides of the limiting plate (62) are inserted into the positioning slots (231). The left and right edges of the back plate (61) are interference-fitted with the insertion port (21) at the rear end of the main support (2).

4. The FAKRA coaxial connector according to claim 3, characterized in that, The long needle-type bent terminal (51) and the short needle-type bent terminal (52) are respectively inserted into the hollow round tube. The outer wall of the long needle-type bent terminal (51) and the short needle-type bent terminal (52) is provided with a protruding hook (501) for the long needle-type bent terminal (51) and the short needle-type bent terminal (52) to be interference-fitted into the long insulator (41) and the short insulator (42) respectively.

5. The FAKRA coaxial connector according to claim 3, characterized in that, The hollow cylindrical sections of the long insulator (41) and the short insulator (42) are provided with multiple uniformly arranged first protruding ribs (402) extending along the length direction on the outer wall of the hollow cylindrical section. The first protruding ribs (402) are used to interference fit the hollow cylindrical sections of the long insulator (41) and the short insulator (42) into the T-shaped copper tube (3).

6. The FAKRA coaxial connector according to claim 3, characterized in that, The hollow tube portion of the long insulator (41) has multiple uniformly arranged second protruding ribs (403) extending along its length on its outer wall near its rear end. The second protruding ribs (403) are used for the long insulator (41) to be interference-fitted to the wall of the long insulator assembly hole (2211).

7. The FAKRA coaxial connector according to claim 3, characterized in that, The back plate (61) and the limiting plate (62) are provided with outward protruding first barb-shaped protrusions (601) on both the left and right sides, and the inner walls of the left and right sides of the insertion port (21) at the rear end of the main support (2) are provided with inward protruding second barb-shaped protrusions (211).

8. The FAKRA coaxial connector according to claim 7, characterized in that, The upper edge of the insertion port (21) at the rear end of the main support (2) is provided with a downwardly extending arrow-shaped protrusion (212), and a notch (602) is provided at the middle position of the back plate (61) to be interference-connected with the arrow-shaped protrusion (212).

9. The FAKRA coaxial connector according to claim 1, characterized in that, The hollow cylindrical tube body (31) of the T-shaped copper tube (3) has a thickened tube wall (311) near its rear end, which forms a stepped surface. The thickened tube wall (311) is press-fitted to the positioning hole (22) of the copper tube.

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