Quick-plug low-intermodulation radio frequency connector

Abstract

The utility model discloses a quick-plug low intermodulation radio frequency connector, which comprises a male end and a female end, the right side of the male end is provided with a plug cavity, the left end of the female end is provided with a plug end, the quick-plug low intermodulation radio frequency connector is characterized in that the outer surface of the male end is annularly provided with a plurality of mounting holes communicated with the plug cavity, and each mounting hole is internally provided with a ball; the outer surface of the plugging end is provided with an annular limiting groove directly facing the mounting hole. The outer surface of the male end is movably sleeved with an unlocking sleeve. When the unlocking sleeve axially moves towards one side of the male end, the unlocking sleeve pushes the inner ends of the balls to move in the insertion cavity and enables the inner ends of the balls to be clamped in the annular limiting grooves. When the unlocking sleeve axially moves towards the other side of the male end, the unlocking sleeve relieves limiting of the balls, and the inner ends of the balls can move outwards to be separated from the annular limiting grooves and the insertion cavities. According to the utility model, the electrical performance and the disassembly and assembly convenience are improved.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to a fast-plug low intermodulation radio frequency connector. Background Art

[0002] The RF coaxial connector is an electromechanical component specially used to connect various ports for transmitting electromagnetic waves. It can be used for the output and input ports of high-frequency instruments and meters, the connection between various functional modules inside communication stations, and the connection between radio transmitting antennas and transmitting modules.

[0003] See also Figure 1 As shown in the figure, the existing connector, the male end 101 and the female end 102 are connected by a threaded connection (a nut 103 is provided on the male end or the female end, and an external thread is provided on the other end, and the nut and the external thread are connected). In this way, only the locking method of the thread can be used to ensure the contact stability of the internal conductor. If the thread connection is not tight, the problem of poor internal contact will occur. At the same time, the internal conductor adopts the end face contact method. If the thread connection is not tight, the end face may not be in contact, resulting in poor contact. Summary of the invention

[0004] The utility model aims to provide a fast-plug low intermodulation radio frequency connector, which can improve the convenience of connection and ensure electrical performance by using the structure.

[0005] To achieve the above object, the technical solution adopted by the utility model is: a fast plug low intermodulation radio frequency connector, including a male end and a female end, the right side of the male end is provided with a plug-in cavity, the left end of the female end is provided with a plug-in end and plugged into the plug-in cavity,

[0006] A plurality of mounting holes communicating with the plug-in cavity are arranged in an annular manner on the outer surface of the male end, and a ball is installed in each mounting hole;

[0007] An annular limiting groove facing the mounting hole is provided on the outer surface of the plug end;

[0008] An unlocking sleeve is provided on the outer surface of the male end;

[0009] When the unlocking sleeve moves axially toward the male end, the unlocking sleeve pushes the inner end of the ball to move into the plug-in cavity, and the inner end of the ball is clamped in the annular limiting groove;

[0010] When the unlocking sleeve moves axially toward the other side of the male end, the unlocking sleeve releases the restriction on the ball, and the inner end of the ball can move outward to escape from the annular limiting groove and the plug-in cavity.

[0011] In the above technical solution, an annular limiting portion is provided at the inner end of the mounting hole, the diameter of the annular limiting portion is smaller than the maximum outer diameter of the ball, and the annular limiting portion limits the ball from moving inward and leaving the mounting hole.

[0012] In the above technical solution, the inner surface of the unlocking sleeve matches the right outer surface of the male end;

[0013] When the inner surface of the unlocking sleeve faces the mounting hole, the inner surface of the unlocking sleeve pushes the ball to move inward along the mounting hole;

[0014] An annular clearance groove is provided on the inner surface of the right end of the unlocking sleeve. When the annular clearance groove faces the mounting hole, the unlocking sleeve releases the restriction on the ball, so that the ball can move outward along the mounting hole and abut against the annular clearance groove.

[0015] In the above technical solution, the left end surface of the annular give way groove is a first guiding inclined surface, the left end of the first guiding inclined surface is connected to the inner surface of the unlocking sleeve, and the first guiding inclined surface is arranged to be inclined outward from left to right.

[0016] In the above technical solution, the left side surface of the annular limiting groove is a second guiding bevel, the left end of the second guiding bevel is connected to the outer surface of the plug-in end, and the second guiding bevel is arranged to be inclined outward from right to left.

[0017] In the above technical solution, a left annular groove is provided on the left outer surface of the male end.

[0018] An annular stopper is provided on the inner surface of the left end of the unlocking sleeve, and the annular stopper is movablely sleeved in the left annular groove;

[0019] A first annular groove is provided on the inner surface of the annular stopper, a first elastic retaining ring is installed in the first annular groove, and the inner surface of the first elastic retaining ring abuts against the inner surface of the left annular groove;

[0020] And / or, a second annular groove is provided on the inner surface of the left annular groove, and when the unlocking sleeve releases the limit on the outward movement of the ball, the inner surface of the first elastic retaining ring abuts against the second annular groove;

[0021] When the unlocking sleeve pushes the inner end of the ball to be clamped in the annular limiting groove, the first elastic retaining ring is arranged on the right side of the second annular groove.

[0022] In the above technical solution, a male end connector is provided in the plug-in cavity, a female end connector is provided in the plug-in end, and the male end connector is electrically connected to the female end connector.

[0023] In the above technical solution, the male terminal connector includes a male terminal outer conductor, a male terminal insulator and a male terminal inner conductor, and the male terminal inner conductor is installed in the male terminal outer conductor via the male terminal insulator;

[0024] The female end connector comprises a female end outer conductor, a female end insulator and a female end inner conductor, the female end inner conductor is installed in the female end outer conductor via the female end insulator, and the male end inner conductor is electrically connected to the female end inner conductor;

[0025] And / or, the male end outer conductor is inserted into the female end outer conductor, and the male end outer conductor is electrically connected to the female end outer conductor.

[0026] In the above technical solution, a first annular protrusion is provided on the outer surface of the male end outer conductor, the first annular protrusion is arranged in the plug-in cavity, and the first annular protrusion is arranged on the left side of the plug-in end;

[0027] The middle part of the male end outer conductor is connected to the male end for movement, and a spring is sleeved on the outside of the male end outer conductor. The left end of the spring abuts against the left end of the plug-in cavity, and the right end of the spring abuts against the first annular protrusion. The spring gives the male end outer conductor a thrust to move rightward.

[0028] In the above technical solution, a plurality of spring sheets are evenly distributed in a ring shape on the right end of the male outer conductor, and an arc-shaped convex portion is provided on the outer surface of each spring sheet. The outer surface of the arc-shaped convex portion abuts against the inner surface of the female outer conductor, and the right end face of the spring sheet abuts against the right end face inside the female outer conductor.

[0029] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0030] 1. In the utility model, a ball and an unlocking sleeve are arranged on the male end, and an annular limiting groove is arranged on the female end. The unlocking sleeve is moved to push the ball into the annular limiting groove to axially limit the female end and the male end, or to release the limit of the ball. Compared with the threaded connection limit method, it can not only improve the connection and disassembly convenience and efficiency between the male end and the female end, but also the ball can be inserted into the annular limiting groove to achieve accurate axial position of the male end and the female end, which can ensure the electrical contact stability between the male end and the female end and ensure electrical performance;

[0031] 2. In the utility model, the first guide bevel and the second guide bevel are arranged, so that it is convenient to push the ball into the annular limit groove, and it is also convenient to disassemble the female end and the male end;

[0032] 3. In the utility model, a spring sheet is arranged at the right end of the contact head, and an annular convex portion is arranged on the outer surface of the spring sheet. The outer surface of the annular convex portion contacts the inner surface of the socket, so that radial contact can be performed at the same time as the end face contact, which can effectively ensure the electrical connection performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the background technology;

[0034] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present utility model (when the male end and the female end are separated);

[0035] Figure 3 It is a schematic diagram of the structure of the male end in the first embodiment of the utility model (the unlocking sleeve is not shown);

[0036] Figure 4 It is a schematic cross-sectional structural diagram of the male end in the first embodiment of the utility model;

[0037] Figure 5 This is a schematic diagram of the structure of the unlocking sleeve in the first embodiment of the utility model;

[0038] Figure 6 It is a schematic cross-sectional structural diagram of the unlocking sleeve in the first embodiment of the utility model.

[0039] Wherein: 1. male end; 2. female end; 3. plug-in cavity; 4. plug-in end; 5. mounting hole; 6. ball bearing; 7. annular limiting groove; 8. unlocking sleeve; 9. annular limiting part; 10. annular giving way groove; 11. first guiding slope; 12. second guiding slope; 13. left annular groove; 14. annular limiting member; 15. first annular groove; 16. first elastic retaining ring; 17. second annular groove; 18. male end outer conductor; 19. male end insulator; 20. male end inner conductor; 21. female end outer conductor; 22. female end inner conductor; 23. first main body; 24. contact head; 25. spring; 26. arc-shaped convex part; 27. first annular protrusion; 28. spring; 101. male end; 102. female end; 103. nut. DETAILED DESCRIPTION

[0040] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0041] Example 1: See Figures 2 to 6 As shown, a fast-plug low intermodulation radio frequency connector includes a male end 1 and a female end 2. The right side of the male end 1 is provided with a plug-in cavity 3, and the left end of the female end 2 is provided with a plug-in end 4 that is plugged into the plug-in cavity 3.

[0042] A plurality of mounting holes 5 communicating with the inserting cavity 3 are arranged in an annular manner on the outer surface of the male end 1, and a ball 6 is installed in each mounting hole 5;

[0043] An annular limiting groove 7 is provided on the outer surface of the plug end 4 facing the mounting hole 5;

[0044] An unlocking sleeve 8 is movablely provided on the outer surface of the male end 1;

[0045] When the unlocking sleeve 8 moves axially toward the male end 1, the unlocking sleeve 8 pushes the inner end of the ball 6 to move into the insertion cavity 3, and the inner end of the ball 6 is clamped in the annular limiting groove 7;

[0046] When the unlocking sleeve 8 moves axially toward the other side of the male end 1 , the unlocking sleeve 8 releases the restriction on the ball 6 , and the inner end of the ball 6 can move outward to escape from the annular limiting groove 7 and the plug-in cavity 3 .

[0047] In this embodiment, the outer diameter of the ball is larger than the axial depth of the mounting hole. In actual use, the plug-in end is inserted into the plug-in cavity, and then the unlocking sleeve is pushed to move axially relative to the male end. The unlocking sleeve pushes the ball inward and makes the ball fit into the annular limit groove. At this time, the inner end of the ball is inserted into the annular limit groove, and the middle and outer ends of the ball are in the mounting hole, thereby realizing the axial limitation of the male and female ends, and the axial distance between the two can ensure the stability of the electrical connection inside the male and female ends, and poor contact will not occur.

[0048] See also Figures 2 to 4 As shown, an annular limiting portion 9 is provided at the inner end of the mounting hole 5, the diameter of the annular limiting portion 9 is smaller than the maximum outer diameter of the ball 6, and the annular limiting portion 9 limits the ball 6 from moving inwardly and escaping from the mounting hole 5. The annular limiting portion is used to limit the ball from moving inwardly and escaping from the mounting hole, that is, the ball will not move inwardly and fall out of the plug-in cavity, so that the axial movement of the ball relative to the mounting hole can be limited by the unlocking sleeve and the annular limiting portion, ensuring that the ball is always partially in the mounting hole.

[0049] See also Figure 2 , 4 As shown in , 5 and 6, the inner surface of the unlocking sleeve 8 matches the right outer surface of the male end 1;

[0050] When the inner surface of the unlocking sleeve 8 faces the mounting hole 5, the inner surface of the unlocking sleeve 8 pushes the ball 6 to move inward along the mounting hole 5;

[0051] An annular clearance groove 10 is provided on the inner surface of the right end of the unlocking sleeve 8. When the annular clearance groove 10 faces the mounting hole 5, the unlocking sleeve 8 releases the restriction on the ball 6, so that the ball 6 can move outward along the mounting hole 5 and abut against the annular clearance groove 10.

[0052] In this embodiment, when the male end and the female end are not yet plugged in, the unlocking sleeve first moves to the left, so that the annular clearance groove faces the mounting hole, that is, the annular clearance groove faces the ball, so that the outer end of the ball can move outward into the annular clearance groove, so that the inner end of the ball can retract into the mounting hole, that is, the inner end of the ball will not be exposed in the plug-in cavity, so that the plug-in end of the female end can be smoothly inserted into the plug-in cavity, wherein the plug-in end will match the plug-in cavity, so that when the plug-in end is inserted into the plug-in cavity, since the ball can move outward along the mounting hole, the plug-in end will push the ball that has not yet moved outward to retract into the mounting hole (for example, the male end is placed horizontally, the ball falls downward under the weight, the ball at the bottom will move downward into the annular clearance groove, the ball at the top will move downward, and the bottom of the ball at the top will be in the plug-in cavity, but it has the freedom to move upward). Then when the male end and the female end need to be limited, the unlocking sleeve moves to the right, and the annular giving groove moves to the right and gradually away from the mounting hole, so that the right end of the inner surface of the unlocking sleeve will first contact the outer surface of the ball, and the ball is pushed inward by the rightward movement of the unlocking sleeve until the inner surface of the unlocking sleeve and the outer surface of the outermost end of the ball are completely in contact. At this time, the ball moves inward to the innermost end, that is, the inner end of the ball is inserted into the annular limiting groove, thereby realizing axial limitation of the male end and the female end, and ensuring the electrical connection performance of the male end and the female end.

[0053] See also Figure 2 , 4 As shown in Figures 5 and 6, the left end face of the annular give way groove 10 is a first guide slope 11, the left end of the first guide slope 11 is connected to the inner surface of the unlocking sleeve 8, the right end of the first guide slope 11 is connected to the inner surface of the annular give way groove 10, and the first guide slope 11 is arranged to be inclined outward from left to right.

[0054] The left side surface of the annular limiting groove 7 is a second guiding bevel 12, the left end of the second guiding bevel 12 is connected to the outer surface of the plug-in end 4, the right end of the second guiding bevel 12 is connected to the inner surface of the annular limiting groove 7, and the second guiding bevel 12 is arranged to be inclined outward from right to left.

[0055] In this embodiment, when the female end is inserted into the male end, it may not be fully plugged into place, that is, the relative axial position may not be in place, and there is a problem of poor contact, or the electrical contact is unstable. Therefore, in order to ensure the smooth movement of the unlocking sleeve and the female end is closer to the male end, the stability of the plug-in connection is ensured. Therefore, through the provision of the first guide bevel and the second guide bevel, the plug-in end of the female end is inserted into the plug-in cavity. At this time, the second guide bevel will face the mounting hole, and then the unlocking sleeve moves to the right. At this time, the first guide bevel will first contact the outer surface of the ball. When the unlocking sleeve continues to move to the right, the first guide bevel gradually pushes the ball inward. The first guide bevel plays a guiding role, enabling it to smoothly push the ball to move inward along the mounting hole, and the ball The outer surface of the inner end of the ball will first contact the second guide bevel. When the ball continues to move inward, the ball will squeeze the second guide bevel. In the process of the ball moving inward, the inner diameter of the annular structure composed of multiple balls will gradually decrease, and the outer diameter on the left side of the second guide bevel will be larger than the outer diameter on the right side of the second guide bevel. In the process of the inner diameter of the annular structure composed of the balls gradually decreasing, the balls will push the female end to move to the left relative to the male end, so that the female end and the male end are plugged in. When the inner surface of the unlocking sleeve is completely in contact with the outer surface of the outer end of the ball, the ball will no longer move inward. At this time, the ball is against the right side of the second guide bevel, or the outer surface of the inner end of the ball is against the inner surface of the annular limit groove. At this time, the male end and the female end are completely plugged in and limited by the ball. At the same time, the female end can also be stably electrically connected to the male end. There will be no problem of loose threaded connection, ensuring the electrical connection performance.

[0056] When disassembling, the unlocking sleeve moves to the left, and when the annular give way groove is facing the mounting hole, when the female end is pulled to the right relative to the male end, the second guide bevel will push the ball to move outward along the mounting hole. The second guide bevel plays a guiding role until the ball retracts into the mounting hole. The female end can be quickly detached from the male end, thereby realizing the disassembly of the male and female ends.

[0057] See also Figures 2 to 4 As shown, a left annular groove 13 is provided on the left outer surface of the male end 1.

[0058] An annular stopper 14 is disposed on the inner surface of the left end of the unlocking sleeve 8, and the annular stopper 14 is movably sleeved in the left annular groove 13;

[0059] A first annular groove 15 is provided on the inner surface of the annular stopper 14, a first elastic retaining ring 16 is installed in the first annular groove 15, and the inner surface of the first elastic retaining ring 16 abuts against the inner surface of the left annular groove 13;

[0060] A second annular groove 17 is provided on the inner surface of the left annular groove 13. When the unlocking sleeve 8 releases the limit on the outward movement of the ball 6, the inner end of the ball 6 can move outward to escape from the annular limit groove 7 and the plug-in cavity 3, and the inner surface of the first elastic retaining ring 16 abuts against the second annular groove 17.

[0061] When the unlocking sleeve 8 pushes the inner end of the ball 6 to be clamped in the annular limiting groove 7 , the first elastic retaining ring 16 is arranged on the right side of the second annular groove 17 .

[0062] In this embodiment, the first elastic retaining ring is made of rubber or silicone, which has a certain elastic deformation force and friction force, so that when the male end and the female end are not plugged in, the first elastic retaining ring is inserted into the second annular groove, so that the axial limit between the male end and the unlocking sleeve can be achieved, preventing the unlocking sleeve from being separated from the male end, and the unlocking sleeve can limit the ball to prevent the ball from moving outward and falling out of the mounting hole. When the unlocking sleeve is required to push the ball to move inward to limit the female end, the unlocking sleeve moves to the right, so that the first elastic retaining ring is on the inner surface of the left annular groove, and it will be separated from the second annular groove. Through the elastic deformation ability of the first elastic retaining ring and its own friction force, the axial movement of the unlocking sleeve relative to the male end is limited, so that after the male end and the female end are plugged in, the axial position of the unlocking sleeve will not move, thereby ensuring the limit of the unlocking sleeve to the ball.

[0063] See also Figures 2 to 4 As shown, a male connector is provided in the plug-in cavity 3, and a female connector is provided in the plug-in end 4, and the male connector is electrically connected to the female connector.

[0064] The male end connector includes a male end outer conductor 18, a male end insulator 19 and a male end inner conductor 20, wherein the male end inner conductor 20 is installed in the male end outer conductor 18 via the male end insulator 19;

[0065] The female end connector includes a female end outer conductor 21, a female end insulator and a female end inner conductor 22, wherein the female end inner conductor 22 is installed in the female end outer conductor 21 via the female end insulator (the female end insulator is not shown in the figure), and the male end inner conductor 20 is electrically connected to the female end inner conductor 22;

[0066] The male end outer conductor 18 is inserted into the female end outer conductor 21, and the male end outer conductor 18 is electrically connected to the female end outer conductor 21. The plug-in end is the female end outer conductor.

[0067] In this embodiment, the male end insulator separates the male end inner conductor from the male end outer conductor, and the two are not electrically connected, and the female end insulator separates the female end inner conductor from the female end outer conductor, and the two are not electrically connected. In this way, after the male end and the female end are plugged in, the male end inner conductor is electrically connected to the female end inner conductor, and the male end outer conductor is electrically connected to the female end outer conductor.

[0068] At the same time, in this embodiment, the male outer conductor 18 includes a first body 23 and a contact head 24, the left end of the contact head is screwed to the right end of the first body, the male insulator is installed inside the first body and the contact head, and the male inner conductor is installed inside the male insulator.

[0069] See also Figures 2 to 4 As shown, the right end of the male outer conductor 18 is evenly distributed with a plurality of spring pieces 25 in a ring shape, and an arc-shaped convex portion 26 is provided on the outer surface of each spring piece 25. The outer surface of the arc-shaped convex portion 26 abuts against the inner surface of the female outer conductor 21, and the right end surface of the spring piece 25 abuts against the right end surface inside the female outer conductor 21. The spring piece will be arranged on the end surface of the contact head, and the outer surface of the spring piece will be arranged flush with the outer surface of the right end of the contact head. The spring piece, the arc-shaped convex portion and the contact head are an integrated structure, that is, the contact head can also include the spring piece and the arc-shaped convex portion.

[0070] At the same time, in this embodiment, the right end of the spring is in contact with the right end surface inside the female end outer conductor, so that the end contact electrical connection between the male end and the female end is realized. In order to ensure the stability and performance of the electrical contact, the outer surface of the spring is flush with the outer surface of the right side of the male end outer conductor, and the outer diameter formed by the multiple springs is equal to the inner diameter of the female end outer conductor, and the outer surface of the right end of the spring has an arc-shaped convex portion, so that the annular structure formed by the multiple arc-shaped convex portions will be larger than the diameter of the female end outer conductor. When the male end outer conductor and the spring are inserted into the female end outer conductor, the female end outer conductor will squeeze the arc-shaped convex portion and the spring, so that the right end of the spring is deformed inward, so that the spring will give the right end of the spring outward restoring force, so that the arc-shaped convex portion is always in contact with the inner surface of the female end outer conductor. On the basis of the end surface contact, radial contact can also be achieved, effectively ensuring the electrical connection performance of the connector. Among them, there is a socket in the female end inner conductor, and the male end inner conductor will be inserted into the socket.

[0071] See also Figure 2 , 4 As shown, a first annular protrusion 27 is provided on the outer surface of the male end outer conductor 18, and the first annular protrusion 27 is arranged in the plug-in cavity 3, and the first annular protrusion 27 is arranged on the left side of the plug-in end 4;

[0072] The middle part of the male outer conductor 18 is movably connected to the male end 1, and a spring 28 is sleeved on the outside of the male outer conductor 18. The left end of the spring 28 abuts against the left end of the plug-in cavity 3, and the right end of the spring 28 abuts against the first annular protrusion 27. The spring 28 gives the male outer conductor 18 a thrust to move rightward.

[0073] By setting the spring, the spring will be in a compressed state, and the restoring force of the spring will give the male end outer conductor a thrust to the right. In this way, after the female end is inserted into the male end and the right end face inside the female end outer conductor contacts the right end face of the male end outer conductor (the right end of the male end inner conductor will be inside the male end outer conductor, and the male end inner conductor will be pre-connected with the female end inner conductor), when the female end continues to move to the left relative to the male end, it will simultaneously push the male end outer conductor and the male end inner conductor to move to the left relative to the male end, compressing the spring, and when the male end and the female end are limited by the ball, the axial position between the male end and the plug-in end will not move relatively, so that the elastic force of the spring can make the male end outer conductor and the male end inner conductor always have a thrust to the right, so that the male end outer conductor always contacts the right end face of the female end outer conductor, thereby ensuring the electrical connection performance.

[0074] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0075] In the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral one; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, for example, the two can form a mechanical abutment or abutment connection through abutment, contact, etc., the two can also be directly hung or hung through an intermediate medium, etc., or it can be the internal connection of the two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A fast-plug low intermodulation radio frequency connector, comprising a male end and a female end, wherein the right side of the male end is provided with a plug-in cavity, and the left end of the female end is provided with a plug-in end for plugging and matching with the plug-in cavity, characterized in that: A plurality of mounting holes communicating with the plug-in cavity are arranged in an annular manner on the outer surface of the male end, and a ball is installed in each mounting hole; An annular limiting groove facing the mounting hole is provided on the outer surface of the plug end; An unlocking sleeve is provided on the outer surface of the male end; When the unlocking sleeve moves axially toward the male end, the unlocking sleeve pushes the inner end of the ball to move into the plug-in cavity, and the inner end of the ball is clamped in the annular limiting groove; When the unlocking sleeve moves axially toward the other side of the male end, the unlocking sleeve releases the restriction on the ball, and the inner end of the ball can move outward to escape from the annular limiting groove and the plug-in cavity.

2. The fast-insert low intermodulation radio frequency connector according to claim 1, characterized in that: An annular limiting portion is provided at the inner end of the mounting hole, the diameter of the annular limiting portion is smaller than the maximum outer diameter of the ball, and the annular limiting portion limits the ball from moving inwardly out of the mounting hole.

3. The fast-insert low intermodulation radio frequency connector according to claim 1, characterized in that: The inner surface of the unlocking sleeve matches the right outer surface of the male end; When the inner surface of the unlocking sleeve faces the mounting hole, the inner surface of the unlocking sleeve pushes the ball to move inward along the mounting hole; An annular clearance groove is provided on the inner surface of the right end of the unlocking sleeve. When the annular clearance groove faces the mounting hole, the unlocking sleeve releases the restriction on the ball, so that the ball can move outward along the mounting hole and abut against the annular clearance groove.

4. The fast-insert low intermodulation radio frequency connector according to claim 3, characterized in that: The left end surface of the annular give way groove is a first guiding inclined surface, the left end of the first guiding inclined surface is connected to the inner surface of the unlocking sleeve, and the first guiding inclined surface is arranged to be inclined outward from left to right.

5. The fast-insert low intermodulation radio frequency connector according to claim 1, characterized in that: The left side surface of the annular limiting groove is a second guiding inclined surface, the left end of the second guiding inclined surface is connected to the outer surface of the plug-in end, and the second guiding inclined surface is arranged to be inclined outward from right to left.

6. The fast-insert low intermodulation radio frequency connector according to claim 1, characterized in that: A left annular groove is provided on the left outer surface of the male end. An annular stopper is provided on the inner surface of the left end of the unlocking sleeve, and the annular stopper is movablely sleeved in the left annular groove; A first annular groove is provided on the inner surface of the annular stopper, a first elastic retaining ring is installed in the first annular groove, and the inner surface of the first elastic retaining ring abuts against the inner surface of the left annular groove; And / or, a second annular groove is provided on the inner surface of the left annular groove, and when the unlocking sleeve releases the limit on the outward movement of the ball, the inner surface of the first elastic retaining ring abuts against the second annular groove; When the unlocking sleeve pushes the inner end of the ball to be clamped in the annular limiting groove, the first elastic retaining ring is arranged on the right side of the second annular groove.

7. The fast-insert low intermodulation radio frequency connector according to claim 1, characterized in that: A male end connector is provided in the plug-in cavity, a female end connector is provided in the plug-in end, and the male end connector is electrically connected to the female end connector.

8. The fast-insert low intermodulation radio frequency connector according to claim 7, characterized in that: The male terminal connector comprises a male terminal outer conductor, a male terminal insulator and a male terminal inner conductor, wherein the male terminal inner conductor is installed in the male terminal outer conductor via the male terminal insulator; The female end connector comprises a female end outer conductor, a female end insulator and a female end inner conductor, the female end inner conductor is installed in the female end outer conductor via the female end insulator, and the male end inner conductor is electrically connected to the female end inner conductor; And / or, the male end outer conductor is inserted into the female end outer conductor, and the male end outer conductor is electrically connected to the female end outer conductor.

9. The fast-insert low intermodulation radio frequency connector according to claim 8, characterized in that: A first annular protrusion is provided on the outer surface of the male end outer conductor, the first annular protrusion is arranged in the plug-in cavity, and the first annular protrusion is arranged on the left side of the plug-in end; The middle part of the male end outer conductor is connected to the male end for movement, and a spring is sleeved on the outside of the male end outer conductor. The left end of the spring abuts against the left end of the plug-in cavity, and the right end of the spring abuts against the first annular protrusion. The spring gives the male end outer conductor a thrust to move rightward.

10. The fast-insert low intermodulation radio frequency connector according to claim 8, characterized in that: The right end of the male outer conductor is evenly distributed in a ring shape, and an arc-shaped convex portion is provided on the outer surface of each of the elastic sheets. The outer surface of the arc-shaped convex portion abuts against the inner surface of the female outer conductor, and the right end surface of the elastic sheet abuts against the right end surface inside the female outer conductor.

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