A quick-lock coaxial connector assembly

Abstract

The present invention proposes a quick-lock coaxial connector assembly, which includes a plug connector and a socket connector that cooperate with each other, the plug connector includes a plug outer conductor, a plug inner conductor, and a plug insulator, the plug insulator is arranged between the plug outer conductor and the plug inner conductor, and a guide portion and a locking protrusion are formed on the plug outer conductor; the socket connector includes a shell, a socket outer conductor, a socket inner conductor, and a socket insulator, the socket insulator is arranged between the socket outer conductor and the socket inner conductor, a first guide groove and a locking piece are formed on the shell, the first guide groove cooperates with the guide portion, the locking piece cooperates with the locking protrusion, and one end of the socket outer conductor and the socket inner conductor are connected to the plug outer conductor and the plug inner conductor respectively. The coaxial connector assembly can be quickly connected and locked, and has good connection reliability.

Description

Technical Field

[0001] The invention relates to a quick-lock coaxial connector component and belongs to the field of connectors. Background Art

[0002] Traditional indoor coverage solutions are mainly passive indoor distribution systems (DAS), which are composed entirely of passive components. Since DAS does not require power supply, is low-cost, highly reliable, and easy to expand, it has become the mainstream solution for optimizing indoor network coverage in the 4G era and has a huge existing market.

[0003] In traditional DAS indoor distribution systems, the connectors used in combiners are mostly SMA and Type N connectors, both of which are threaded and have low assembly efficiency. Only SMA connectors are suitable for high-density installation, but SMA connectors are not suitable for large currents and have limitations in actual use.

[0004] The 5G era has put forward some new requirements for combiners, such as high-density installation, high-current shared RF lines, low insertion loss transmission, a large number of interfaces, fast installation, low cost, waterproof function, etc. However, there is currently no connector on the market that can meet the above-mentioned 5G combiner requirements. Therefore, under the new situation, it is urgent to develop a new connector with lower cost, faster installation, and reliable performance. Summary of the invention

[0005] In order to solve the defects in the prior art, the present invention proposes a quick-lock coaxial connector assembly, which can achieve quick connection and has high reliability and low manufacturing cost.

[0006] To achieve the above-mentioned purpose, the quick-lock coaxial connector assembly of the present invention includes a plug connector and a socket connector that cooperate with each other, the plug connector includes a plug outer conductor, a plug inner conductor, and a plug insulator, the plug insulator is arranged between the plug outer conductor and the plug inner conductor, and a guide portion and a locking protrusion are formed on the plug outer conductor; the socket connector includes a shell, a socket outer conductor, a socket inner conductor, and a socket insulator, the socket insulator is arranged between the socket outer conductor and the socket inner conductor, a first guide groove and a locking piece are formed on the shell, the first guide groove cooperates with the guide portion, the locking piece cooperates with the locking protrusion, and one end of the socket outer conductor and the socket inner conductor are respectively connected to the plug outer conductor and the plug inner conductor.

[0007] Further, the guide portion and the locking protrusion extend outwardly from the outer circumferential surface of the plug outer conductor.

[0008] Furthermore, the locking member is an integral component with the housing and is rotatably formed on the housing in a seesaw form. The locking member includes an operating end and a locking end. The locking end has a stop surface that abuts against the locking protrusion.

[0009] Furthermore, the locking piece is connected to the shell through a connecting portion, the connecting portion has a first inclined surface close to the operating end and a second inclined surface close to the locking end, and the angle between the first inclined surface and the extension surface from the operating end to the first inclined surface is greater than the angle between the second inclined surface and the extension surface from the locking end to the second inclined surface.

[0010] Furthermore, the shell and the outer conductor of the socket are coaxially clearance-fitted, a circle of grooves is formed on the outer circumference of the outer conductor of the socket, and the shell forms an elastic boss, which cooperates with the groove so that the shell can rotate relative to the outer conductor of the socket to adjust the position of the locking end of the locking piece.

[0011] Furthermore, the housing forms a locking member accommodating space, the operating end extends from the locking member accommodating space, the locking member accommodating space is communicated with the central hole of the housing through a second guide groove, and the second guide groove is used to guide the locking protrusion to enter the socket connector.

[0012] Furthermore, the socket insulator forms a small-diameter shaft section with a smaller diameter at one end facing the plug connector, and the center hole of the socket outer conductor forms a large-diameter hole section with a larger diameter at one end facing the plug connector. A compressed crown spring is accommodated in the space formed by the small-diameter shaft section and the large-diameter hole section.

[0013] Furthermore, when the plug connector and the socket connector are connected, the inner cylinder of the plug outer conductor is inserted between the crown spring and the small diameter shaft section of the socket insulator, and the outer cylinder of the plug outer conductor is inserted between the socket outer conductor and the shell.

[0014] Furthermore, two ends of the conductor inside the socket are configured as elastic plug interfaces, which are respectively plugged with the conductor inside the plug and the wire core of the cable.

[0015] Furthermore, the braided mesh of the cable is pressed onto the end of the outer conductor of the socket through the metal tube, and a rubber sealing tube is provided outside the metal tube, which at least covers the joint between the metal tube and the outer conductor of the socket.

[0016] The quick-lock coaxial connector assembly of the present invention improves the traditional threaded connection method into a plug-in and locking connection method, thereby achieving quick connection. In addition, the locking structure is cleverly designed and is integrally constructed with the housing, which simplifies the structure, reduces parts, reduces production costs, and has better connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described and explained below in conjunction with the accompanying drawings.

[0018] Figure 1 Schematic diagram of a quick-lock coaxial connector assembly according to a preferred embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Cross-sectional view of the plug connector.

[0020] Figure 3 yes Figure 1 Cross-sectional view of the socket connector.

[0021] Figure 4 yes Figure 3 A cross-sectional view of the locking member of the socket connector.

[0022] Figure 5 yes Figure 3 Schematic diagram of the crown spring of the socket connector.

[0023] Figure 6 It is a schematic diagram of the plug connector and the socket connector in the connected state.

[0024] Figure 7 It is a cross-sectional view of the plug connector and the socket connector in the connected state. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be more clearly and completely explained below through description of preferred embodiments of the present invention in combination with the accompanying drawings.

[0026] like Figure 1 As shown, the quick-lock coaxial connector assembly of the preferred embodiment of the present invention includes a plug connector 1 and a socket connector 2, which cooperate and connect with each other to achieve physical and electrical connection between the cable and the device.

[0027] like Figure 2 As shown, the plug connector 1 includes a plug outer conductor 11, a plug inner conductor 12, and a plug insulator 13. The plug inner conductor 12 and the plug insulator 13 are installed in the central hole of the plug outer conductor 11, and the plug insulator 13 is arranged between the plug outer conductor 11 and the plug inner conductor 12. The plug outer conductor 11 is designed as a double-layer cylindrical structure at the end connected to the socket connector 2, including an outer cylinder 111 and an inner cylinder 112, and the two cylinders are separated by a certain distance. A guide portion 113 and a locking protrusion 114 are formed on the outer surface of the outer cylinder 111. Preferably, the guide portion 113 is a guide strip, which extends on the outer circumferential surface of the outer cylinder along the central axis direction of the outer cylinder 111. The locking protrusion 114 has a hook-shaped portion 1140 at the end facing the socket connector 2.

[0028] The outer conductor 11 of the plug also has a flange 115, and a mounting hole is formed on the flange 115, which is used to fix the plug connector 1 to a device. The device includes a combiner, a connector for a base station, a connector for a car, etc. The flange 115 has a groove on the surface facing the device, which is used to install a sealing ring 14. When the plug connector is fixed to the device, the sealing ring 14 can seal the joint between the plug connector and the device, and play a waterproof role.

[0029] like Figure 3 As shown, the socket connector 2 includes a housing 20, a socket outer conductor 21, a socket inner conductor 22, and a socket insulator 23. The socket inner conductor 22 and the socket insulator 23 are installed in the central hole of the socket outer conductor 21, and the socket insulator 23 is arranged between the socket outer conductor 21 and the socket inner conductor 22. The housing 20 is arranged outside the socket outer conductor 21, on the one hand, it wraps part of the socket outer conductor 21, and on the other hand, it is convenient for users to perform the plug-in operation of the socket connector 2 and the plug connector 1.

[0030] The housing 20 is formed with a first guide groove 201 (see Figure 1 ), the first guide groove 201 extends from the end surface of the housing 20 toward one end of the plug connector 1 toward the other end, and is used to cooperate with the guide portion 113 of the plug connector.

[0031] Combination Figure 3 and Figure 4As shown, a locking member 202 is provided on the housing 20 for cooperating with the locking protrusion 114 of the plug connector. Specifically, the locking member 202 and the housing 20 are an integral member and are made of the same material. The locking member 202 includes a rod-shaped portion and a connecting portion 203, and the rod-shaped portion is connected to the housing 20 through the connecting portion 203. The two ends of the rod-shaped portion are respectively an operating end 204 and a locking end 205, wherein the locking end 205 is close to the plug connector 1, and the locking end 205 has a block shape, on which a stop surface 2050 for abutting against the locking protrusion 114 is formed, and the stop surface 2050 is away from the plug connector 1. The operating end 204 is for the user to press to operate the locking member 202. The connecting portion 203 is roughly triangular in shape, and has a first inclined surface 2031 and a second inclined surface 2032. The first inclined surface 2031 extends upwardly from the housing 20 in a direction toward the plug connector, and the second inclined surface 2032 extends upwardly from the housing 20 in a direction away from the plug connector. The extended surface of the operating end 204 on the rod-shaped portion extending toward the connecting portion 203 intersects with the top of the first inclined surface 2031, and the angle between the first inclined surface 2031 and the extended surface is α1. The extended surface of the locking end 205 on the rod-shaped portion extending toward the connecting portion 203 intersects with the top of the second inclined surface 2032, and the angle between the second inclined surface 2032 and the extended surface is α2. The angle α1 is greater than the angle α2. Therefore, in the absence of external force, the rod-shaped portion is in an inclined state and tilts downward toward the direction of the plug connector, so that the locking end 205 is lower than the operating end 204. The structural design of the locking member 202 forms a seesaw structure. When the user presses the operating end 204 downward, the locking end 205 can be tilted upward by relying on the connection angle design between the connecting portion and the rod-shaped portion, without the need to set up an elastic body such as a spring. Therefore, such a structural design not only realizes the seesaw function, but also reduces parts and simplifies the structure.

[0032] The housing 20 forms a receiving space 206 at the locking member 202, which is used to cover most of the locking member 202. The operating end 204 of the locking member extends out of the receiving space 206, which is convenient for the user to operate. A second guide groove 207 is formed on the housing wall between the receiving space 206 and the central hole of the housing 20. The second guide groove 207 cooperates with the locking protrusion 114 of the plug connector. When the user presses the operating end 204, the locking end 205 rises. At this time, the locking protrusion 114 can enter the socket connector 2 along the second guide groove 207. When the user releases the operating end 204, the locking end 205 falls down, and the stop surface 2050 of the locking end 205 abuts against the locking protrusion 114, locking it in the socket connector 2.

[0033] The inner diameter of the housing 20 is slightly larger than the outer diameter of the socket outer conductor 21, and a coaxial clearance fit is adopted between the two. A circle of grooves 212 is formed on the outer circumference of the socket outer conductor 21 near the end of the housing 20, and an elastic boss 208 is provided on the inner wall of the housing center hole at the end, and the elastic boss 208 protrudes toward the central axis of the center hole. In the assembled state, the elastic boss 208 is located in the groove 212, thereby defining the axial position between the housing 20 and the socket outer conductor 21, so that the housing 20 cannot move axially relative to the socket outer conductor 21, but can rotate relative to the socket outer conductor 21. By rotating the housing, the positions of the first guide groove 201 and the second guide groove 207 can be adjusted to align with the guide portion 113 and the locking protrusion 114 respectively, in preparation for plugging.

[0034] The end of the socket insulator 23 of the socket connector facing the plug connector 1 is in the shape of a stepped shaft, with a small diameter shaft section 230 having a smaller diameter. The end of the center hole of the socket outer conductor 21 facing the plug connector 1 is in the shape of a stepped hole, with a large diameter hole section 210 having a larger diameter. The axial lengths of the small diameter shaft section 230 and the large diameter hole section 210 are substantially equal, and a space for accommodating the crown spring 24 is formed between the two. Figure 5 As shown, the crown spring 24 is provided with an opening 240 to enhance its elasticity. A limiting boss 211 is provided at the end of the central hole of the outer conductor of the socket to limit the crown spring 24 in the accommodation space. During assembly, the crown spring 24 is first compressed and then placed in the accommodation space. In the accommodation space, the crown spring is expanded due to the release of the compression force.

[0035] like Figure 6 and Figure 7 As shown, when the socket connector 2 is plugged into the plug connector 1, the operating end 204 of the locking member is first pressed, and then the first guide groove 201 on the housing 20 is aligned with the guide portion 113 on the plug outer conductor, and then the guide portion 113 is inserted into the first guide groove 201, and at the same time, the locking protrusion 114 is inserted into the second guide groove 207. With the insertion of the guide portion 113 and the locking protrusion 114, the outer cylinder 111 of the plug outer conductor enters the housing 20 and is inserted between the housing 20 and the socket outer conductor 21, and the inner cylinder 112 of the plug outer conductor is inserted between the crown spring 24 and the socket insulator 23. Under the elastic force of the crown spring 24, the outer cylinder 111 of the plug outer conductor is in close contact with the outer wall of the socket outer conductor 21, and the plug inner conductor 13 is inserted into the plug interface of the socket inner conductor 23 to achieve electrical connection.

[0036] A limiting surface 209 is provided on the inner wall of the shell 20. When the outer conductor 11 of the plug contacts the limiting surface 209, it indicates that the plug connector 1 has been plugged in place. At this time, the user releases the operating end 204, the locking end 205 falls, and its stop surface 2050 abuts against the locking protrusion 114, thereby locking the connection between the plug connector 1 and the socket connector 2.

[0037] The socket outer conductor 21 is provided with a circle groove at the limiting surface 209 of the shell, and the sealing ring 25 is installed in the groove. The sealing ring 25 is located at the joint of the socket outer conductor 21, the plug outer conductor 11 and the inner wall of the shell. In the connected state, under the self-locking force of the plug outer conductor 11 and the shell 20, the sealing ring 25 is pressed at the joint to achieve waterproofing of the connection interface.

[0038] One end of the socket connector 2 is connected to the plug connector 1, and the other end is connected to the cable 3. The cable 3 includes a wire core 31 and a braided mesh 32, and the braided mesh 32 is wrapped around the outside of the wire core 31. One end of the wire core 31 is plugged into the plug interface of the socket inner conductor 22. The braided mesh 32 is pressed onto the socket outer conductor 31 having a serrated structure through a metal tube 4. Preferably, the metal tube is a copper tube. A corrugated rubber sealing tube 5 is installed outside the metal tube 4, and the rubber sealing tube 5 covers the joint between the metal tube 4 and the socket outer conductor 21, so as to achieve waterproofing of the tail of the wiring.

[0039] The socket inner conductor 22 is made of elastic metal material, and the sockets at both ends are of a grooved shrinkage structure, which can achieve stable insertion of the plug inner conductor 12 and the wire core 31. The socket inner conductor 22 has a large outer diameter, which can achieve high current transmission of more than 5A, so that the current transmission is shared with the radio frequency line.

[0040] The above specific implementations are only descriptions of the preferred implementations of the present invention, and do not limit the protection scope of the present invention. Without departing from the design concept and spirit of the present invention, various modifications, substitutions and improvements made by ordinary technicians in this field to the technical solution of the present invention based on the text description and drawings provided by the present invention should all fall within the protection scope of the present invention. The protection scope of the present invention is determined by the claims.

Claims

1. A quick-lock coaxial connector assembly, comprising a plug connector and a socket connector that cooperate with each other, characterized in that: The plug connector comprises a plug outer conductor, a plug inner conductor, and a plug insulator, wherein the plug insulator is arranged between the plug outer conductor and the plug inner conductor, and a guide portion and a locking protrusion are formed on the plug outer conductor; The socket connector comprises a housing, a socket outer conductor, a socket inner conductor, and a socket insulator, wherein the socket insulator is arranged between the socket outer conductor and the socket inner conductor, a first guide groove and a locking piece are formed on the housing, the first guide groove cooperates with the guide portion, the locking piece cooperates with the locking protrusion, and one end of the socket outer conductor and the socket inner conductor are connected to the plug outer conductor and the plug inner conductor respectively; The guide portion and the locking protrusion extend outwardly from the outer circumferential surface of the plug outer conductor, the guide portion is a guide strip extending on the outer circumferential surface of the plug outer conductor along the central axis direction of the plug outer conductor, and the locking protrusion has a hook-shaped portion at one end facing the socket connector; The locking member is an integral member with the housing and is rotatably formed on the housing in a seesaw form, the locking member comprises an operating end and a locking end, and the locking end has a stop surface abutting against the locking protrusion; The locking member is connected to the housing through a connecting portion, the connecting portion having a first inclined surface close to the operating end and a second inclined surface close to the locking end, the angle between the first inclined surface and the extending surface from the operating end to the first inclined surface is greater than the angle between the second inclined surface and the extending surface from the locking end to the second inclined surface; The shell and the outer conductor of the socket are coaxially matched with each other, a circle of grooves is formed on the outer circumference of the outer conductor of the socket, and the shell forms an elastic boss, which cooperates with the groove, so that the shell can rotate relative to the outer conductor of the socket to adjust the position of the locking end of the locking piece; The housing forms a locking member accommodating space, the operating end extends from the locking member accommodating space, the locking member accommodating space is communicated with the central hole of the housing through a second guide groove, and the second guide groove is used to guide the locking protrusion to enter the socket connector.

2. The quick-lock coaxial connector assembly according to claim 1, characterized in that: The socket insulator forms a small-diameter shaft section with a smaller diameter at one end facing the plug connector, and the center hole of the socket outer conductor forms a large-diameter hole section with a larger diameter at one end facing the plug connector. A compressed crown spring is accommodated in the space formed by the small-diameter shaft section and the large-diameter hole section.

3. The quick-lock coaxial connector assembly according to claim 2, characterized in that: When the plug connector is connected to the socket connector, the inner cylinder of the plug outer conductor is inserted between the crown spring and the small diameter shaft section of the socket insulator, and the outer cylinder of the plug outer conductor is inserted between the socket outer conductor and the shell.

4. The quick-lock coaxial connector assembly according to claim 1, characterized in that: The two ends of the inner conductor of the socket are arranged as elastic plug-in interfaces, which are respectively plugged with the inner conductor of the plug and the wire core of the cable.

5. The quick-lock coaxial connector assembly according to claim 4, characterized in that: The braided mesh of the cable is pressed onto the end of the outer conductor of the socket through a metal tube. A rubber sealing tube is arranged outside the metal tube, and the rubber sealing tube at least covers the joint between the metal tube and the outer conductor of the socket.

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