A mini-fakra RF coaxial connector

Abstract

This utility model discloses a mini-fakra RF coaxial connector, comprising: a front boss for mating formed at the front end of a housing; a window provided in the housing; a socket for assembling a wire harness inside the housing; a snap-fit ​​flange provided on the outer surface of the wire harness; the socket passing through the front boss; a first opening communicating with the socket formed on the surface of the front boss; a snap-fit ​​groove formed on the surface of the front boss; and a slot communicating with the socket on the front boss. A front shell is inserted into the front boss; the front shell has a second opening; a first latch is provided on one side of the second opening; the first latch engages with the snap-fit ​​groove; and the front shell has a resilient buckle that abuts the snap-fit ​​flange after assembly. A rear cover is installed at the rear end of the housing; a pin passes through the window and the second opening and is inserted into the slot, engaging with the rear end of the snap-fit ​​flange. This design ensures the positional accuracy of the wire harness and improves the reliability and stability of the connector.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency coaxial connector technology, and in particular to a mini-fakra radio frequency coaxial connector. Background Technology

[0002] Mini-fakra RF coaxial connectors can be divided into wire-end and board-end connectors based on their structure. Wire-end connectors mainly include components such as a housing, CPA, sealing ring, and assembly. The assembly is mainly used to fix the terminal end of the coaxial cable inside the housing. The CPA is used for connector mating and locking. The sealing ring is used to seal the housing and the waterproof end of the coaxial cable.

[0003] CPA stands for Connector Position Assurance. It is mounted on the connector housing and is used to lock the mating connector to itself, preventing it from coming loose. However, with existing RF coaxial connectors, after assembly with the CPA, mis-insertion of the slot often occurs when the CPA is pushed forward, rendering it unable to function properly. Furthermore, the mating pins are easily damaged.

[0004] However, existing RF coaxial connectors are insufficient in ensuring the positional accuracy of coaxial cables. Furthermore, the coaxial cables are easily pulled during installation or use, which can lead to further deviations in positional accuracy. Existing methods mainly rely on clamps or individual limiting components connected to the housing to provide positional accuracy. In addition, the assemblies of existing RF coaxial connectors, such as front covers and limiting components, lack effective interlocking structures and are prone to detachment.

[0005] Therefore, there is an urgent need for a mini-fakra RF coaxial connector that can solve one or more of the above problems. Utility Model Content To address one or more problems existing in the prior art, this utility model provides a mini-fakra RF coaxial connector. The technical solution adopted by this utility model to solve the above problems is: a mini-fakra RF coaxial connector, comprising: a housing, a front boss formed at the front end of the housing for mating, a window provided in the housing, a socket formed inside the housing for assembling a wire harness, a snap-fit ​​flange provided on the outer surface of the assembly wire harness, the socket passing through the front boss, a first opening communicating with the socket formed on the surface of the front boss, a snap-fit ​​groove formed on the surface of the front boss, and a slot communicating with the socket on the front boss; The front boss is fitted with a front shell, and the front end face of the front shell is provided with a mating interface that mates with the insertion hole. The mating interface snaps and limits the head end of the assembly wire harness. The front shell is provided with a second opening, and a first buckle is provided on one side of the second opening. The first buckle snaps with the snap-fit ​​groove. The front shell is provided with an elastic buckle. After assembly, the elastic buckle presses against the snap-fit ​​flange. The rear end of the housing is fitted with a rear cover for constraining the assembly wiring harness, a pin passes through the window and the second opening and is inserted into the slot, and the pin engages with the rear end of the snap-fit ​​flange.

[0006] In some embodiments, a first sealing ring is fitted at the root of the front boss, and the first sealing ring is connected to the tail end of the front shell. The first sealing ring is used for interface sealing and waterproofing.

[0007] In some embodiments, a second sealing ring is installed at the rear end of the housing, the second sealing ring is connected to the assembly wiring harness, and the rear cover limits and fixes the second sealing ring.

[0008] In some embodiments, the surface of the pin is provided with a locking point that interferes with the slot.

[0009] In some embodiments, a limiting flange is provided in the socket, the limiting flange engages with the snap-fit ​​flange, and the limiting flange restricts the assembly harness from moving toward the interface.

[0010] In some embodiments, a CPA is mounted on the upper side of the housing.

[0011] Furthermore, the CPA has protrusions on both sides, and the upper side of the outer shell has a travel limiting groove, into which the protrusions are inserted.

[0012] Furthermore, the CPA is provided with a pin, and the free end of the pin is provided with a ramp. The inclination angle of the ramp is an acute angle. The upper side of the housing is provided with a guide protrusion, and the side of the guide protrusion facing the ramp is provided with a guide ramp. The inclination angle of the guide ramp is an acute angle. When the CPA is pushed forward, the ramp and the guide ramp are in contact.

[0013] Furthermore, two ramps are provided, and a mating protrusion is formed between the two ramps. Two guide protrusions are provided, and when the CPA is pushed forward, the mating protrusion is inserted between the two guide protrusions.

[0014] In some embodiments, a main body is mounted on the front end of the assembly harness, a snap-fit ​​flange is disposed on the outer side wall of the main body, an insulator is installed inside the main body, a terminal is installed inside the insulator, and the terminal is fixedly connected to the cable.

[0015] The technical effects achieved by this utility model are as follows: It achieves locking of the front shell, front boss, and assembly wiring harness after assembly, creating an interlock between components. Simultaneously, it ensures the positional accuracy of the assembly wiring harness within the socket, making it difficult for components inside the shell to detach and for the assembly wiring harness to move. Furthermore, it utilizes a pin to further engage and lock the front shell, assembly wiring harness, and front boss, further preventing component detachment and ensuring positional accuracy. This avoids positional movement of the assembly wiring harness and loosening of components due to elastic displacement of the latches / clamps, ultimately improving the reliability and stability of the connector. By setting a ramp structure for mating on the CPA and the shell, it prevents mis-insertion when the CPA is pushed forward, offering superior performance compared to ordinary planar mis-insertion prevention structures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is an internal view of the outer casing of this utility model; Figure 4 This is a schematic diagram of the front shell of this utility model; Figure 5 This is a side view of the present invention; Figure 6 This is a cross-sectional view of the outer shell of this utility model after it is connected to the CPA; Figure 7 This is a schematic diagram of the CPA of this utility model; Figure 8 This is a cross-sectional view of the assembly wire harness of this utility model; Figure 9 This is a cross-sectional view of the present invention before the assembly wire harness is installed.

[0017] In the diagram, 1. Outer shell; 10. Window; 11. Front boss; 110. Snap-fit ​​groove; 111. Slot; 12. Socket; 120. First opening; 121. Limiting flange; 13. Travel limiting groove; 14. Guide protrusion; 140. Guide ramp; 2. Front shell; 20. Second opening; 21. First snap; 22. Elastic snap; 23. Connecting interface; 3. CPA; 30. Protrusion; 31. Pin; 310. Ramp; 311. Butt joint protrusion; 4. First sealing ring; 5. Second sealing ring; 6. Rear cover; 7. Pin; 8. Assembly harness; 80. Main body; 800. Snap-fit ​​flange; 81. Insulator; 82. Terminal; 83. Cable. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this utility model more readily understood, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] This utility model discloses a mini-fakra RF coaxial connector, such as Figures 1-3 , Figure 8 , Figure 9 As shown, it includes: a housing 1, the front end of which is formed with a front boss 11 for insertion, the housing 1 is provided with a window 10, the housing 1 is formed with a socket 12 for inserting a wire harness 8, the outer surface of the wire harness 8 is provided with a snap-fit ​​flange 800, the socket 12 passes through the front boss 11, the surface of the front boss 11 is formed with a first opening 120 communicating with the socket 12, the surface of the front boss 11 is formed with a snap-fit ​​groove 110, and the front boss 11 is provided with a slot 111 communicating with the socket 12; Combination Figures 1-4 As shown, the front boss 11 is fitted with a front shell 2. The front end face of the front shell 2 is provided with a mating interface 23 that mates with the insertion hole 12. The mating interface 23 engages and limits the head end of the assembly wire harness 8. The front shell 2 is provided with a second opening 20. A first buckle 21 is provided on one side of the second opening 20. The first buckle 21 engages with the snap-fit ​​groove 110. The front shell 2 is provided with an elastic buckle 22. After assembly, the elastic buckle 22 presses against the snap-fit ​​flange 800. Combination Figure 2 , Figure 9 As shown, a rear cover 6 for constraining the assembly harness 8 is installed at the rear end of the housing 1. The rear cover 6 is fixedly connected to the housing 1 by a snap-fit ​​structure. A pin 7 passes through the window 10 and the second opening 20 and is inserted into the slot 111. The pin 7 is snapped into the rear end of the snap-fit ​​flange 800.

[0020] It should be noted that the front shell 2 has a flange inside that matches the first opening 120, and this flange is partially connected to the first opening 120; the outer shell 1 and the front cover 2 are positioned and inserted through multiple guide rails or other guide structures. The second opening 20 and the first buckle 21 are provided with chamfers or rounded corners on the side facing the slot 111. The chamfers or rounded corners are used to guide the insertion of the pin 7. Furthermore, the surface of the pin 7 is provided with locking points, which interfere with the slot 111.

[0021] Specifically, such as Figure 1 , Figure 2 , Figures 5-7 As shown, a CPA3 is installed on the upper side of the housing 1. CPA stands for Connector Position Assurance. The CPA3 has protrusions 30 on both sides. The upper side of the housing 1 has a travel limit groove 13. The protrusions 30 are inserted into the travel limit groove 13 to realize the quick assembly and anti-retraction of the CPA. Combination Figures 5-7 As shown, the CPA3 is provided with a pin 31, and the free end of the pin 31 is provided with a ramp 310. The inclination angle of the ramp 310 is an acute angle. The upper side of the outer casing 1 is provided with a guide protrusion 14, and the side of the guide protrusion 14 facing the ramp 310 is provided with a guide ramp 140. The inclination angle of the guide ramp 140 is an acute angle. When the CPA3 is pushed forward, the ramp 310 and the guide ramp 140 are in contact. For example: When the CPA is not mated, pushing the CPA forward causes the front end of the CPA's pin 31 to insert into the guide ramp 140. At this time, the ramp 310 and the guide ramp 140 are in contact, and the guide ramp 140 abuts against the ramp 310, preventing the front end of the pin 31 from popping up, thus achieving the effect of preventing mis-insertion. Furthermore, when mating, the pin 31 is lifted up, and pushing the CPA at this time can lock the pin. In some embodiments, two ramps 310 are provided, and a mating protrusion 311 is formed between the two ramps 310. Two guide protrusions 14 are provided, and when the CPA3 is pushed forward, the mating protrusion 311 is inserted between the two guide protrusions 14.

[0022] Combination Figure 8 As shown, the front end of the assembly harness 8 is equipped with a main body 80, the snap-fit ​​flange 800 is disposed on the outer side wall of the main body 80, an insulator 81 is installed inside the main body 80, a terminal 82 is installed inside the insulator 81, and the terminal 82 is fixedly connected to the cable 83.

[0023] Specifically, in combination Figure 2 , Figure 9 As shown, a first sealing ring 4 is fitted at the root of the front boss 11. The first sealing ring 4 is connected to the tail end of the front shell 2. The first sealing ring 4 is used for interface sealing and waterproofing. A second sealing ring 5 is installed at the rear end of the outer shell 1. The second sealing ring 5 is connected to the assembly wire harness 8. The rear cover 6 limits and fixes the second sealing ring 5. The second sealing ring 5 is used for sealing and waterproofing the cable 83.

[0024] Combination Figure 8 , Figure 9 As shown, a limiting flange 121 is provided in the socket 12. The limiting flange 121 is engaged with the snap-fit ​​flange 800. The limiting flange 121 restricts the assembly harness 8 from moving toward the interface 23.

[0025] In summary, this invention achieves locking of the front shell, front boss, and assembly wiring harness after assembly, creating an interlock between components. Simultaneously, it ensures the positional accuracy of the assembly wiring harness within the socket, preventing components inside the shell from easily detaching and minimizing positional movement of the assembly wiring harness. Further locking and interlocking of the front shell, assembly wiring harness, and front boss using pins further prevents component detachment and ensures positional accuracy. This avoids positional movement of the assembly wiring harness and loosening of components due to elastic displacement of the latches / clamps, ultimately improving the reliability and stability of the connector. By setting a ramp structure for mating on the CPA and shell, it prevents mis-insertion when the CPA is pushed forward, offering superior performance compared to ordinary planar mis-insertion prevention structures.

[0026] The embodiments described above are merely illustrative of one or more implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A mini-fakra RF coaxial connector, characterized in that, include: The housing has a front protrusion for insertion at its front end, a window, and a socket for assembling a wire harness inside. The outer surface of the wire harness is provided with a snap-fit ​​flange. The socket passes through the front protrusion. The surface of the front protrusion has a first opening communicating with the socket. The surface of the front protrusion has a snap-fit ​​groove. The front protrusion is provided with a slot communicating with the socket. The front boss is fitted with a front shell, and the front end face of the front shell is provided with a mating interface that mates with the insertion hole. The mating interface snaps and limits the head end of the assembly wire harness. The front shell is provided with a second opening, and a first buckle is provided on one side of the second opening. The first buckle snaps with the snap-fit ​​groove. The front shell is provided with an elastic buckle. After assembly, the elastic buckle presses against the snap-fit ​​flange. The rear end of the housing is fitted with a rear cover for constraining the assembly wiring harness, a pin passes through the window and the second opening and is inserted into the slot, and the pin engages with the rear end of the snap-fit ​​flange.

2. The mini-fakra RF coaxial connector according to claim 1, characterized in that, A first sealing ring is fitted at the base of the front boss, and the first sealing ring is connected to the tail end of the front shell. The first sealing ring is used for interface sealing and waterproofing.

3. The mini-fakra RF coaxial connector according to claim 1 or 2, characterized in that, A second sealing ring is installed at the rear end of the housing. The second sealing ring is connected to the assembly wiring harness, and the rear cover limits and fixes the second sealing ring.

4. The mini-fakra RF coaxial connector according to claim 1, characterized in that, The surface of the pin is provided with locking points, which interfere with the slot.

5. The mini-fakra RF coaxial connector according to claim 1, characterized in that, A limiting flange is provided inside the socket, and the limiting flange engages with the snap-fit ​​flange, thereby restricting the assembly harness from moving toward the interface.

6. The mini-fakra RF coaxial connector according to claim 1, characterized in that, A CPA is mounted on the upper side of the housing.

7. The mini-fakra RF coaxial connector according to claim 6, characterized in that, The CPA has protrusions on both sides, and the upper side of the outer shell has a travel limiting groove, into which the protrusions are inserted.

8. The mini-fakra RF coaxial connector according to claim 6, characterized in that, The CPA is provided with a pin, and the free end of the pin is provided with a ramp. The inclination angle of the ramp is an acute angle. The upper side of the housing is provided with a guide protrusion. The side of the guide protrusion facing the ramp is provided with a guide ramp. The inclination angle of the guide ramp is an acute angle. When the CPA is pushed forward, the ramp and the guide ramp are in contact.

9. The mini-fakra RF coaxial connector according to claim 8, characterized in that, Two ramps are provided, and a mating protrusion is formed between the two ramps. Two guide protrusions are provided, and when the CPA is pushed forward, the mating protrusion is inserted between the two guide protrusions.

10. The mini-fakra RF coaxial connector according to claim 1, characterized in that, The front end of the assembly harness is equipped with a main body, the snap-fit ​​flange is disposed on the outer side wall of the main body, an insulator is installed inside the main body, a terminal is installed inside the insulator, and the terminal is fixedly connected to the cable.

Images