A radio frequency coaxial cable snap connector and a production process thereof

Abstract

This invention relates to the field of cable snap-fit ​​connector technology, specifically to a radio frequency coaxial cable snap-fit ​​connector and its manufacturing process. The invention involves inserting the cable sheath, outer conductor, foamed core, and inner conductor together into a rear housing. The inner conductor is left with sufficient length for mating, and the end of the outer conductor is left with a certain allowance. The middle housing assembly is first snapped into the rear housing assembly, clamping the remaining end of the outer conductor between the rear housing and the inner core. Then, the middle housing assembly is connected to the front housing assembly, allowing the inner conductor to snap into the pinhole, thus completing the cable snap-fit. This method eliminates the need for soldering. Disassembly allows for unscrewing the connector to detach the rear housing assembly from the front and middle housing assemblies, enabling reuse of the connector and avoiding waste of connector parts. The three-layer O-ring structure provides triple waterproofing, protecting the safety of cable mating.

Description

Technical Field

[0001] This invention relates to the field of cable snap-fit ​​connector technology, specifically to a radio frequency coaxial cable snap-fit ​​connector and its manufacturing process. Background Technology

[0002] Radio frequency coaxial cable is a type of wire and signal transmission line, generally made of four layers of material: the innermost layer is a conductive copper wire, the outside of which is surrounded by a layer of plastic as an insulator and dielectric, the outside of which is a thin mesh conductive material, usually copper or alloy, and then the outermost insulating material as the outer sheath. In actual use, two sections of cable are connected according to the length requirements, which requires the use of radio frequency coaxial cable connectors.

[0003] CN209119503U discloses a cable connector, including a housing and an inner conductor extending from the housing. One end of the inner conductor extending from the housing has a hollow post for passing through a cable core. The connector also includes an insulating baffle and a solder pad extending from the housing. The insulating baffle isolates the inner conductor from the solder pad. Along a direction away from the housing, the ends of the insulating baffle, the inner conductor, and the solder pad are flush. The surface of the solder pad away from the insulating baffle has a soldering groove.

[0004] However, the cable connector is a soldered connector, which is relatively complicated to operate. After soldering, it cannot be replaced or reused, resulting in waste of products and parts. In addition, the invention only has one layer of seal and is not very waterproof. Therefore, a radio frequency coaxial cable snap-fit ​​connector is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a radio frequency coaxial cable snap-fit ​​connector to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a radio frequency coaxial cable snap-fit ​​connector, comprising a front housing assembly for connecting the front section cable, a middle housing assembly for snapping the two sections of cable together, a rear housing assembly for connecting the rear section cable, and a sealing assembly for waterproofing.

[0007] As a further preferred embodiment of this technical solution: the front housing assembly includes a front housing, a front insulator, a pin, and a threaded sleeve. The inner wall of the front housing is provided with a front insulator, the inner wall of the front insulator is provided with a pin, and the outer wall of the front housing is provided with a threaded sleeve.

[0008] As a further preferred embodiment of this technical solution: the middle housing assembly includes a middle outer shell, an inner core, and a rear insulator, wherein the inner core is fixedly connected to the inner sidewall of the middle outer shell, and the rear insulator is provided on the inner sidewall of the middle outer shell.

[0009] As a further preferred embodiment of this technical solution: the rear housing assembly includes a cable sheath, a cable outer conductor, a cable foam, a cable inner conductor, and a rear outer shell. The cable sheath is inserted into the inner wall of the rear outer shell. The cable outer conductor is provided on the inner wall of the cable sheath. The cable foam is provided on the inner wall of the cable outer conductor. The cable inner conductor is provided on the inner wall of the cable foam.

[0010] As a further preferred embodiment of this technical solution: the sealing assembly includes a first sealing groove, a first O-ring, a second sealing groove, a second O-ring, a third sealing groove, and a third O-ring. The inner wall of the rear housing is provided with a first sealing groove, and a first O-ring is provided between the inner wall of the first sealing groove and the outer wall of the cable sheath. The outer wall of the rear housing is provided with a second sealing groove, and a second O-ring is provided between the inner wall of the second sealing groove and the inner wall of the middle housing. The outer wall of the middle housing is provided with a third sealing groove, and a third O-ring is provided between the inner wall of the third sealing groove and the inner wall of the front housing.

[0011] As a further preferred embodiment of this technical solution: the outer wall of the inner shell is snapped onto the inner wall of the rear shell, and the outer conductor end of the cable is clamped between the rear shell and the inner core.

[0012] As a further preferred embodiment of this technical solution: the outer side wall of the middle outer shell is provided with external threads, and the inner side wall of the front outer shell is provided with internal threads.

[0013] As a further preferred embodiment of this technical solution: the inner wall of the pin is provided with a pinhole for accommodating the inner conductor of the cable.

[0014] As a further preferred embodiment of this technical solution: the inner wall of the threaded sleeve is provided with an upper retaining groove, the outer wall of the front housing is provided with a lower retaining groove, a retaining spring is provided between the upper retaining groove and the lower retaining groove, and a washer is provided at the joint between the threaded sleeve and the front housing.

[0015] The manufacturing process for this RF coaxial cable snap-fit ​​connector is as follows:

[0016] S1. The pin is formed by stamping tin bronze or beryllium bronze, and the contact surface of the pin is plated with silver;

[0017] S2. The front outer shell, the middle outer shell, and the rear outer shell are all formed by stamping antimagnetic brass. The inner wall of the front outer shell is cut with internal threads, and the outer wall of the front outer shell is cut with a lower retaining groove. The inner wall of the middle outer shell is stamped with an inner core, and the outer wall of the middle outer shell is cut with a third sealing groove and an external thread. The inner wall of the rear outer shell is cut with a first sealing groove, and the outer wall of the rear outer shell is cut with a second sealing groove.

[0018] S3. Insert the pin into the middle of the mold, melt the polytetrafluoroethylene particles and inject them into the mold, and cool and form the front insulator and the pin into a whole.

[0019] S4. The rear insulator is made by hot-melting polytetrafluoroethylene particles and injecting them into a mold, then cooling and forming it.

[0020] S5. The threaded sleeve is formed by stamping alloy material, and the inner side wall of the threaded sleeve is cut with an upper retaining groove.

[0021] S6. The retaining ring is formed by stamping 65Mn spring steel;

[0022] S7. The first O-ring, the second O-ring, and the third O-ring are all made of fluororubber material that is heated and melted, then injected into a mold and cooled to form the final product.

[0023] S8. The gasket is made by heating and melting polyurethane material, injecting it into a mold, and then cooling and shaping it.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This invention inserts the cable sheath, outer conductor, foamed core, and inner conductor together into the rear outer shell, leaving sufficient length for the inner conductor to be joined. A certain amount of slack is left at the end of the outer conductor. The middle shell assembly is first snapped into the rear shell assembly, clamping the remaining end of the outer conductor between the rear outer shell and the inner core. Then, the middle shell assembly is connected to the front shell assembly via external and internal threads, allowing the inner conductor to be inserted into the pin hole, thus completing the cable connection. This connection can be completed without soldering. Disassembly can be achieved by twisting the connector, separating the rear shell assembly from the front and middle shell assemblies, allowing for connector reuse and avoiding waste of connector parts. The structure of the first, second, and third O-rings provides triple waterproofing, protecting the safety of cable connections and enhancing practicality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the front housing assembly in this invention;

[0029] Figure 4 This is a cross-sectional view of the front housing assembly in this invention;

[0030] Figure 5 This is a schematic diagram of the structure of the rear housing assembly and the middle housing assembly in this invention;

[0031] Figure 6 This is a cross-sectional view of the rear housing assembly and the middle housing assembly in this invention;

[0032] Figure 7 This is a cross-sectional view of the sealing assembly in this invention.

[0033] In the diagram: 10. Front housing assembly; 11. Front outer shell; 12. Front insulator; 13. Pin; 14. Screw sleeve; 20. Middle housing assembly; 21. Middle outer shell; 22. Inner core; 23. Rear insulator; 30. Rear housing assembly; 31. Cable sheath; 32. Cable outer conductor; 33. Cable foam; 34. Cable inner conductor; 35. Rear outer shell; 40. Sealing assembly; 411. First sealing groove; 412. First O-ring; 421. Second sealing groove; 422. Second O-ring; 431. Third sealing groove; 432. Third O-ring; 5. External thread; 6. Internal thread; 7. Pinhole; 8. Upper retaining groove; 9. Lower retaining groove; 111. Snap ring; 112. Washer. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Please see Figure 1-7The present invention provides a technical solution: a radio frequency coaxial cable snap-fit ​​connector, including a front housing assembly 10 for connecting the front section cable, a middle housing assembly 20 for snapping the two sections of cable, a rear housing assembly 30 for connecting the rear section cable, and a sealing assembly 40 for waterproofing; in use, the middle housing assembly 20 is first snapped into the rear housing assembly 30, and then the middle housing assembly 20 is connected to the front housing assembly 10.

[0037] In this embodiment, specifically: the front housing assembly 10 includes a front housing 11, a front insulator 12, a pin 13, and a screw sleeve 14. The front insulator 12 is provided on the inner side wall of the front housing 11, the pin 13 is provided on the inner side wall of the front insulator 12, and the screw sleeve 14 is provided on the outer side wall of the front housing 11. The front insulator 12 not only has the function of insulation, but also supports the pin 13.

[0038] In this embodiment, specifically: the middle housing assembly 20 includes a middle outer shell 21, an inner core 22 and a rear insulator 23. The inner core 22 is fixedly connected to the inner side wall of the middle outer shell 21, and the rear insulator 23 is provided on the inner side wall of the middle outer shell 21. The rear insulator 23 has a through hole at its center that can accommodate the passage of the inner conductor 34 of the cable.

[0039] In this embodiment, specifically: the rear housing assembly 30 includes a cable sheath 31, a cable outer conductor 32, a cable foam 33, a cable inner conductor 34, and a rear outer shell 35. The cable sheath 31 is inserted into the inner wall of the rear outer shell 35. The cable outer conductor 32 is provided on the inner wall of the cable sheath 31. The cable foam 33 is provided on the inner wall of the cable outer conductor 32. The cable inner conductor 34 is provided on the inner wall of the cable foam 33. The cable sheath 31, cable outer conductor 32, cable foam 33, and cable inner conductor 34 are inserted together into the rear outer shell 35, with the cable inner conductor 34 having a length sufficient for docking.

[0040] In this embodiment, specifically: the sealing assembly 40 includes a first sealing groove 411, a first O-ring 412, a second sealing groove 421, a second O-ring 422, a third sealing groove 431, and a third O-ring 432. The inner wall of the rear housing 35 has a first sealing groove 411, and a first O-ring 412 is provided between the inner wall of the first sealing groove 411 and the outer wall of the cable sheath 31. The outer wall of the rear housing 35 has a second sealing groove 421, and the inner wall of the second sealing groove 421 is provided with the first O-ring 412 between the inner wall of the first sealing groove 421 and the outer wall of the cable sheath 31. A second O-ring 422 is provided between the inner sidewalls of the middle outer shell 21, and a third sealing groove 431 is provided on the outer sidewall of the middle outer shell 21. A third O-ring 432 is provided between the inner sidewall of the third sealing groove 431 and the inner sidewall of the front outer shell 11. The first O-ring 412 is used to form a sealed structure between the rear outer shell 35 and the cable sheath 31, the second O-ring 422 is used to form a sealed structure between the rear outer shell 35 and the middle outer shell 21, and the third O-ring 432 is used to form a sealed structure between the middle outer shell 21 and the front outer shell 11.

[0041] In this embodiment, specifically: the outer wall of the inner outer shell 21 is snapped onto the inner wall of the rear outer shell 35, and the end of the outer conductor 32 of the cable is clamped between the rear outer shell 35 and the inner core 22; before snapping, a certain amount of slack is left at the end of the outer conductor 32 of the cable, and after snapping, the slack end is clamped between the rear outer shell 35 and the inner core 22.

[0042] In this embodiment, specifically: the outer side wall of the middle outer shell 21 is provided with an external thread 5, and the inner side wall of the front outer shell 11 is provided with an internal thread 6; this facilitates the threaded connection between the middle outer shell 21 and the front outer shell 11.

[0043] In this embodiment, specifically: the inner sidewall of the pin 13 is provided with a pin hole 7 for accommodating the inner conductor 34 of the cable; so that the inner conductor 34 of the cable can be inserted into the pin 13.

[0044] In this embodiment, specifically: the inner sidewall of the screw sleeve 14 is provided with an upper retaining groove 8, the outer sidewall of the front housing 11 is provided with a lower retaining groove 9, a retaining spring 111 is provided between the upper retaining groove 8 and the lower retaining groove 9, and a washer 112 is provided at the joint between the screw sleeve 14 and the front housing 11; so that the screw sleeve 14 can be fixed on the outer surface of the front housing 11, and a sealed structure is formed between the screw sleeve 14 and the front housing 11.

[0045] The manufacturing process for this RF coaxial cable snap-fit ​​connector is as follows:

[0046] S1. The pin 13 is formed by stamping tin bronze or beryllium bronze, and the contact surface of the pin 13 is plated with silver.

[0047] S2. The front outer shell 11, the middle outer shell 21, and the rear outer shell 35 are all formed by stamping antimagnetic brass. The inner wall of the front outer shell 11 is cut with an internal thread 6, and the outer wall of the front outer shell 11 is cut with a lower retaining groove 9. The inner wall of the middle outer shell 21 is stamped with an inner core 22, and the outer wall of the middle outer shell 21 is cut with a third sealing groove 431 and an external thread 5. The inner wall of the rear outer shell 35 is cut with a first sealing groove 411, and the outer wall of the rear outer shell 35 is cut with a second sealing groove 421.

[0048] S3. Insert the pin 13 into the middle of the mold, melt the polytetrafluoroethylene particles and inject them into the mold, and cool and form the front insulator 12 and the pin 13 into a whole.

[0049] S4. The rear insulator 23 is made by hot-melting polytetrafluoroethylene particles and injecting them into a mold, then cooling and forming it.

[0050] S5. The screw sleeve 14 is formed by stamping alloy material, and the inner sidewall of the screw sleeve 14 is cut with an upper groove 8.

[0051] S6. The retaining ring 111 is stamped from 65Mn spring steel;

[0052] S7. The first O-ring 412, the second O-ring 422 and the third O-ring 432 are all made of fluororubber material that is heated and melted, then injected into a mold and cooled to form a solid shape.

[0053] S8. The gasket 112 is made by heating and melting polyurethane material, injecting it into a mold, and then cooling and shaping it.

[0054] The working principle of this invention is as follows: During use, the cable sheath 31, outer conductor 32, foamed cable 33, and inner conductor 34 are inserted together into the rear outer shell 35. The inner conductor 34 is left with sufficient length for splicing. A certain amount of slack is left at the end of the outer conductor 32. The middle shell assembly 20 is first snapped into the rear shell assembly 30, so that the remaining end of the outer conductor 32 is clamped between the rear outer shell 35 and the inner core 22. Then, the middle shell assembly 20 is connected to the front shell assembly 10 via external threads 5 and internal threads 6, so that the inner conductor 34 is snapped into the pin hole 7 of the pin 13, thereby completing the cable splicing. This constitutes a radio frequency coaxial cable. The coaxial cable snap-fit ​​connector can snap the cable together without soldering. During disassembly, the connector can be twisted to separate the rear housing assembly 30 from the front housing assembly 10 and the middle housing assembly 20, and then the connector can be reused, avoiding waste of connector parts. In addition, the first O-ring 412 is used to form a sealed structure between the rear housing 35 and the cable sheath 31, the second O-ring 422 is used to form a sealed structure between the rear housing 35 and the middle housing 21, and the third O-ring 432 is used to form a sealed structure between the middle housing 21 and the front housing 11, giving the invention triple waterproof performance, protecting the safety of cable connection, and making it more practical.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radio frequency coaxial cable snap-fit ​​connector, characterized in that: It includes a front housing assembly (10) for connecting the front section of the cable, a middle housing assembly (20) for snapping the two sections of the cable together, a rear housing assembly (30) for connecting the rear section of the cable, and a sealing assembly (40) for waterproofing. The front housing assembly (10) includes a front housing (11), a front insulator (12), a pin (13), and a screw sleeve (14). The front insulator (12) is provided on the inner side wall of the front housing (11), the pin (13) is provided on the inner side wall of the front insulator (12), and the screw sleeve (14) is provided on the outer side wall of the front housing (11). The middle housing assembly (20) includes a middle outer shell (21), an inner core (22) and a rear insulator (23). The inner core (22) is fixedly connected to the inner sidewall of the middle outer shell (21), and the rear insulator (23) is provided on the inner sidewall of the middle outer shell (21). The rear housing assembly (30) includes a cable sheath (31), an outer cable conductor (32), a cable foam (33), an inner cable conductor (34), and a rear housing (35). The inner wall of the rear housing (35) is into which the cable sheath (31) is inserted. The inner wall of the cable sheath (31) is provided with the outer cable conductor (32). The inner wall of the outer cable conductor (32) is provided with the cable foam (33). The inner wall of the cable foam (33) is provided with the inner cable conductor (34). The inner wall of the middle outer shell (21) is snapped onto the outer wall of the rear outer shell (35), and the end of the cable outer conductor (32) is clamped between the rear outer shell (35) and the inner core (22).

2. The RF coaxial cable snap-fit ​​connector according to claim 1, characterized in that: The sealing assembly (40) includes a first sealing groove (411), a first O-ring (412), a second sealing groove (421), a second O-ring (422), a third sealing groove (431), and a third O-ring (432). The inner wall of the rear housing (35) is provided with the first sealing groove (411). The inner wall of the first sealing groove (411) is provided with the first O-ring (412) between the inner wall of the first sealing groove (411) and the outer wall of the cable sheath (31). The outer wall of the rear housing (35) is provided with the second sealing groove (421). The inner wall of the second sealing groove (421) is provided with the second O-ring (422) between the inner wall of the second sealing groove (421) and the inner wall of the middle housing (21). The outer wall of the middle housing (21) is provided with the third sealing groove (431). The inner wall of the third sealing groove (431) is provided with the third O-ring (432) between the inner wall of the third sealing groove (431) and the inner wall of the front housing (11).

3. The RF coaxial cable snap-fit ​​connector according to claim 2, characterized in that: The outer side wall of the middle outer shell (21) is provided with external threads (5), and the inner side wall of the front outer shell (11) is provided with internal threads (6).

4. The RF coaxial cable snap-fit ​​connector according to claim 3, characterized in that: The inner wall of the pin (13) is provided with a pinhole (7) for accommodating the inner conductor (34) of the cable.

5. The RF coaxial cable snap-fit ​​connector according to claim 4, characterized in that: The inner wall of the threaded sleeve (14) is provided with an upper retaining groove (8), the outer wall of the front outer shell (11) is provided with a lower retaining groove (9), a retaining spring (111) is provided between the upper retaining groove (8) and the lower retaining groove (9), and a washer (112) is provided at the joint between the threaded sleeve (14) and the front outer shell (11).

6. A manufacturing process for an RF coaxial cable snap-fit ​​connector, applicable to the RF coaxial cable snap-fit ​​connector of claim 5, characterized in that, The manufacturing process for this RF coaxial cable snap-fit ​​connector is as follows: S1. The pin (13) is formed by stamping tin bronze or beryllium bronze, and the contact surface of the pin (13) is plated with silver. S2. The front outer shell (11), the middle outer shell (21) and the rear outer shell (35) are all formed by stamping antimagnetic brass. The inner wall of the front outer shell (11) is cut with an internal thread (6) and the outer wall of the front outer shell (11) is cut with a lower groove (9). The inner wall of the middle outer shell (21) is stamped with an inner core (22). The outer wall of the middle outer shell (21) is cut with a third sealing groove (431) and the outer wall of the middle outer shell (21) is cut with an external thread (5). The inner wall of the rear outer shell (35) is cut with a first sealing groove (411) and the outer wall of the rear outer shell (35) is cut with a second sealing groove (421). S3. Insert the pin (13) into the middle of the mold, melt the polytetrafluoroethylene particles and inject them into the mold, and cool and form the front insulator (12) and the pin (13) into a whole. S4. The rear insulator (23) is made by hot-melting polytetrafluoroethylene particles and injecting them into a mold, then cooling and forming it. S5. The screw sleeve (14) is formed by stamping alloy material, and the inner side wall of the screw sleeve (14) is cut with an upper groove (8); S6. The snap ring (111) is formed by stamping 65Mn spring steel; S7. The first O-ring (412), the second O-ring (422) and the third O-ring (432) are all made of fluororubber material that is heated and melted, then injected into a mold and cooled to form a solid shape. S8. The gasket (112) is made by heating and melting polyurethane material, injecting it into a mold, and then cooling and shaping it.

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