Bayonet inserting and pushing type self-locking radio frequency coaxial connector and connecting method thereof

Abstract

The invention relates to the technical field of radio frequency connection, in particular to a bayonet inserting and pushing type self-locking radio frequency coaxial connector and a connection method thereof.The bayonet inserting and pushing type self-locking radio frequency coaxial connector comprises a female head and a male head, a socket is slidably arranged in the female head through an elastic assembly in the length direction of the female head, and a pin is slidably arranged in the male head through an adaptive assembly in the length direction of the male head; a guide assembly is arranged between the female head and the male head, a self-locking assembly is further arranged between the female head and the male head, and through axial floating compensation of the elastic assembly and the self-adaptive assembly, axial self-adaptive adjustment of the socket and the contact pin in the inserting process is achieved; the guide assembly automatically corrects radial and angular deviations at the initial stage of insertion, so that insertion loss is reduced, and radio frequency performance stability is improved; the self-locking assembly completes rapid self-locking at the moment of being inserted in place, additional operation is not needed, the connecting efficiency is improved, meanwhile, a mechanical locking structure can resist high-frequency vibration and strong impact, and the connecting reliability and long-term stability under the severe working condition are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radio frequency connection, in particular to a bayonet plug-push type self-locking radio frequency coaxial connector and a connecting method thereof. BACKGROUND

[0002] With the rapid development of modern communication, radar, electronic countermeasures and aerospace, etc. high-precision field, as the key element of signal transmission, the performance of radio frequency coaxial connector directly affects the stability and reliability of the whole system. Especially in high-density integration, modular installation and rapid maintenance application scenarios, higher requirements are put forward for the connector. Not only need to realize low loss, high frequency signal transmission in complex electromagnetic environment, but also need to have mechanical properties such as quick plugging, anti-vibration impact, long-term locking reliability, etc.

[0003] The traditional radio frequency coaxial connector adopts threaded connection or push-pull structure, which has the following disadvantages in actual application: on the one hand, although threaded connection can provide strong locking force, it is tedious to operate and takes a long time, which is not conducive to rapid deployment and maintenance; on the other hand, although the conventional push-pull structure can realize quick plugging, it is easy to appear loose, fall off or poor contact under harsh working conditions such as high vibration and strong impact, which seriously affects the continuity and safety of system operation. In addition, the existing connector is easy to appear inaccurate centering of the pin and the socket during insertion, which leads to insertion loss and reduces the overall radio frequency performance. SUMMARY

[0004] The purpose of the present application is to provide a bayonet plug-push type self-locking radio frequency coaxial connector and a connecting method thereof to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: A bayonet plug-push type self-locking radio frequency coaxial connector, comprising a female head and a male head, the inside of the female head is slidably provided with a socket along the length direction thereof through an elastic assembly, the inside of the male head is slidably provided with a pin along the length direction thereof through an adaptive assembly, and the socket and the pin are adapted to each other. A guide assembly is arranged between the female head and the male head, which can make the pin and the socket complete the docking operation smoothly when the male head drives the pin to be inserted into the socket of the female head. A self-locking assembly is further arranged between the female head and the male head, which can lock one end of the male head and one end of the female head after the pin and the socket are completely inserted.

[0006] The bayonet plug-push type self-locking radio frequency coaxial connector as described above: The elastic assembly comprises a sliding seat and a first spring, the sliding seat is coaxially arranged in the female head, and the first spring is arranged in the female head; The two ends of the first spring are respectively abutted against the inner side wall of the female head and the sliding seat, and the socket is fixedly connected with the sliding seat.

[0007] The bayonet plug-push type self-locking RF coaxial connector as described above: The outer wall of the sliding seat is fixedly provided with a sliding block, and the inner wall of the female head is provided with a sliding groove along the length direction of the female head, and the sliding block is slidably arranged in the sliding groove.

[0008] The bayonet plug-push type self-locking RF coaxial connector as described above: The adaptive assembly comprises a moving seat and a second spring, the moving seat is coaxially arranged in the male head, and the second spring is arranged in the male head; The two ends of the second spring are respectively abutted against the inner side wall of the male head and the moving seat, and the pin is fixedly connected with the moving seat.

[0009] The bayonet plug-push type self-locking RF coaxial connector as described above: The outer wall of the moving seat is fixedly provided with a limiting block, and the inner wall of the male head is provided with a limiting groove along the length direction of the male head, and the limiting block is slidably arranged in the limiting groove.

[0010] The bayonet plug-push type self-locking RF coaxial connector as described above: The guide assembly comprises a plurality of guide blocks, and the plurality of guide blocks are fixedly arranged on the outer wall of the male head along the circumference; The inner wall of one end of the female head is provided with a guide groove along the length direction of the female head, and the guide groove is provided with a plurality of guide grooves and is uniformly distributed along the circumferential direction; The end of the guide block close to the pin is provided with a pointed end, and the end of the guide groove close to the socket is provided with an outwardly expanding shape.

[0011] The bayonet plug-push type self-locking RF coaxial connector as described above: The self-locking assembly comprises a sleeve ring, the sleeve ring is slidably arranged on the outer wall of the female head, and the outer wall of the female head is coaxially fixedly provided with a stop ring and a stop ring; The inner side wall of the sleeve ring is coaxially fixedly provided with a limiting ring, and the limiting ring is located between the stop ring and the stop ring.

[0012] The bayonet plug-push type self-locking RF coaxial connector as described above: The outer wall of the female head is provided with a third spring, and the two ends of the third spring are respectively abutted against the stop ring and the limiting ring; Under the action of the third spring, the limiting ring always remains in close contact with the retaining ring when no external force is applied.

[0013] As described above, the bayonet-type self-locking RF coaxial connector: The outer wall of the female head is provided with a through hole, the cross-section of the through hole is frustum-shaped, there are multiple through holes and they are evenly distributed along the circumference, the multiple through holes correspond to the limiting ring, and steel balls are embedded in the multiple through holes. The outer wall of the male head is provided with an annular groove that cooperates with the multiple steel balls. When the male connector drives the pin to connect with the socket on the female connector, the external force causes the collar to slide, causing the limiting ring to move away from the multiple through holes. The third spring is compressed, and the male connector pushes the steel ball to move within the through hole. When the annular groove aligns with the steel ball, the external force is removed, and the collar and limiting ring are reset under the action of the third spring. The limiting ring, steel ball, through hole, and annular groove cooperate to lock the female connector and the male connector.

[0014] A connection method for the aforementioned bayonet-type self-locking RF coaxial connector, characterized by comprising the following steps: Step 1: Pre-positioning preparation. Hold the female and male connectors respectively. The sliding seat inside the female connector pushes the socket to the initial insertion position under the action of spring number 1. The movable seat inside the male connector pushes the pin to the initial insertion position under the action of spring number 2. The collar is pressed tightly against the retaining ring under the action of spring number 3. The steel ball is pressed into the through hole by the limiting ring and protrudes into the inner cavity of the female connector, forming a locking state. Step 2: Unlock and coarse alignment. Pull the outer ring of the female head backward. The limiting ring moves backward with the collar and compresses the No. 3 spring, so that the steel ball in the open hole area loses its outer constraint. Move the male head close to the female head. The tip of the guide block automatically corrects the radial and angular deviations under the guidance of the inlet of the outer guide groove of the female head, so as to achieve circumferential anti-rotation and coarse alignment of the axis. Step 3: Floating insertion. Advance the male connector in a straight line along the guide groove. The pin enters the socket hole first. If there is an axial dimension difference or insertion resistance, the pin pushes the slide back through the socket and compresses the first spring. At the same time, the socket pushes the moving seat back through the pin and compresses the second spring. The two springs slide simultaneously to align the pin and the socket, completing zero-stress engagement. When the guide block reaches the bottom of the guide groove, the pin reaches the designed insertion depth, and the annular groove on the outer wall of the male connector is axially aligned with the through hole of the female connector. Step 4: Instant self-locking, release the collar, release spring number 3, the limit ring quickly resets and covers the through hole, its inner conical surface presses the steel ball inward along the frustum hole and jams it into the annular groove, while the outer side is locked by the limit ring, the male and female heads achieve axial rigid locking. At this time, spring number 1 and spring number 2 remain under pressure and store energy, continuously providing positive force to the contact surface to resist vibration and impact, and complete the radio frequency connection.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Axial floating compensation through elastic and adaptive components enables adaptive axial adjustment of the socket and pins during mating, effectively overcoming axial mismatch issues caused by processing errors, thermal expansion and contraction, or installation deviations. The guide component automatically corrects radial and angular deviations in the initial stage of mating, ensuring precise alignment of the pins and socket even with initial eccentricity or tilt angles, reducing insertion loss and improving RF performance stability. The self-locking component completes rapid self-locking instantly upon mating, requiring no additional operation and improving connection efficiency. At the same time, its mechanical locking structure can withstand high-frequency vibration and strong impacts, ensuring connection reliability and long-term stability under harsh operating conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a bayonet-type self-locking RF coaxial connector.

[0017] Figure 2 This is a half-section front view of the overall structure of a bayonet-type self-locking RF coaxial connector.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0020] Figure 5 This is another schematic diagram of the overall structure of a bayonet-type self-locking RF coaxial connector.

[0021] Figure 6 for Figure 5 Enlarged view of point C.

[0022] Figure 7 This is a half-sectional schematic diagram of the overall structure of a bayonet-type self-locking RF coaxial connector.

[0023] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0024] Figure 9 for Figure 7 Enlarged view of point E in the middle.

[0025] In the diagram: 1. Female connector; 2. Male connector; 3. Socket; 4. Pin; 5. Slide; 6. Spring No. 1; 7. Slider; 8. Slide groove; 9. Moving seat; 10. Spring No. 2; 11. Limiting block; 12. Limiting groove; 13. Guide block; 14. Guide groove; 15. Collar; 16. Retaining ring; 17. Retaining ring; 18. Limiting ring; 19. Spring No. 3; 20. Through hole; 21. Steel ball; 22. Annular groove. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Please see Figures 1-9 As an embodiment of the present invention, a bayonet-type self-locking radio frequency coaxial connector includes a female connector 1 and a male connector 2. The female connector 1 has a socket 3 slidably disposed inside its length direction by an elastic component. The male connector 2 has a pin 4 slidably disposed inside its length direction by an adaptive component. The socket 3 and the pin 4 are compatible. A guide component is provided between the female connector 1 and the male connector 2. When the male connector 2 drives the pin 4 to connect with the socket 3 on the female connector 1, the guide component enables the pin 4 and the socket 3 to successfully complete the docking operation. A self-locking component is also provided between the female connector 1 and the male connector 2. The self-locking component can lock one end of the male connector 2 and one end of the female connector 1 together after the pin 4 and the socket 3 are fully inserted.

[0028] In this embodiment, the socket 3 is supported by an elastic component inside the female connector 1 housing, allowing the socket 3 to slide slightly along the axial direction to form a floating state. This floating provides axial tolerance space for subsequent mating. The pin 4 is supported by an adaptive component inside the male connector 2 housing, allowing the pin 4 to slide slightly along the axial direction to form an adaptive state. This floating provides compensation for the length difference between the pin 4 and the socket 3. When the male connector 2 approaches the female connector 1, the guide component contacts the pin 4 and socket 3 first. It uses rigid geometric constraints to gradually correct any radial eccentricity or angular misalignment between the two, so that the axis of the pin 4 coincides with the axis of the socket 3. After the axes are aligned, the male connector 2 continues to push forward, and the head of the pin 4 enters the opening of the socket 3 first. If there is a slight residual misalignment between the pin 4 and the socket 3, the elastic component and the self-adaptive component simultaneously undergo elastic sliding, so that the socket 3 and the pin 4 align with each other and achieve zero-stress engagement. Once pin 4 reaches the predetermined insertion depth, the self-locking component activates instantly, rigidly locking the male connector 2 housing and the female connector 1 housing axially to prevent springback or loosening. At this time, the elastic component and the adaptive component remain in a pressurized and energy-storing state, continuously providing positive force to the contact surface. Under external vibration or impact, because the male connector 2 and the female connector 1 are rigidly connected by the self-locking component, there is no relative displacement between pin 4 and socket 3. At the same time, the elastic component and the adaptive component absorb micro-amplitude energy, avoiding fretting wear on the contact surface, and achieving highly reliable and low-loss RF transmission.

[0029] As a further embodiment of the present invention, the elastic component includes a slide block 5 and a first spring 6, wherein the slide block 5 is coaxially slidably disposed inside the female head 1, and the first spring 6 is disposed inside the female head 1. The two ends of the first spring 6 abut against the inner side wall of the female head 1 and the slide 5 respectively, and the socket 3 is fixedly connected to the slide 5; The outer wall of the slide block 5 is fixedly provided with a slider 7, and the inner wall of the female head 1 is provided with a groove 8 along its length direction, and the slider 7 is slidably disposed in the groove 8.

[0030] In this embodiment, please refer to Figure 2 and Figure 3 The slide block 5 is coaxially constrained by the inner cavity of the female head 1 and can only slide along the axial direction; the slider 7 on its outer wall is embedded in the groove 8 on the inner wall of the female head 1 to form a rotation lock, ensuring that the slide block 5 and the socket 3 fixed on it do not rotate circumferentially at any time and keep the circumferential reference unchanged. Spring 6 is installed between the bottom of the inner cavity of the female head 1 and the end face of the slide 5. It is in a pre-compressed state. The elastic force continuously pushes the slide 5 in the insertion direction, so that the socket 3 obtains an outward elastic floating stroke. When the male connector 2 is not inserted, the slide block 5 is pressed against the front limit end of the slide groove 8 by the spring force, and the socket 3 is in the initial "ready to be inserted" position; at this time, the energy stored in the first spring 6 is at its minimum, and the system is in a stable and static state. During the insertion process, the front end of the pin 4 contacts the end face of the socket 3. If there is an axial dimension difference or insertion resistance, the pin 4 pushes the slide 5 backward through the socket 3, the first spring 6 is further compressed, and the slider 7 slides backward along the slide groove 8, so that the socket 3 moves backward in the axial direction, realizing axial floating compensation and avoiding rigid jamming. Once the pin 4 reaches the designed insertion depth, the self-locking assembly locks the housing. At this point, the rebound force of the first spring 6 is continuously applied forward through the slide 5, forcing the contact surface between the socket 3 and the pin 4 to maintain a constant positive pressure, thus maintaining low contact resistance and vibration resistance.

[0031] As a further embodiment of the present invention, the adaptive component includes a movable seat 9 and a second spring 10, wherein the movable seat 9 is coaxially slidably disposed inside the male head 2, and the second spring 10 is disposed inside the male head 2; The two ends of the second spring 10 abut against the inner side wall of the male head 2 and the movable seat 9 respectively, and the pin 4 is fixedly connected to the movable seat 9; The outer wall of the movable seat 9 is fixedly provided with a limiting block 11, and the inner wall of the male head 2 is provided with a limiting groove 12 along its length direction. The limiting block 11 is slidably disposed in the limiting groove 12.

[0032] In this embodiment, please refer to Figure 7 and Figure 8 The movable seat 9 is coaxially constrained by the inner cavity of the male head 2 and can only slide along the axial direction. The limiting block 11 on its outer wall is embedded in the limiting groove 12 on the inner wall of the male head 2 to form a rotation lock, ensuring that the movable seat 9 and the pin 4 fixed thereon do not rotate circumferentially at any time and keep the circumferential reference unchanged. The second spring 10 is installed between the bottom of the inner cavity of the male head 2 and the end face of the moving seat 9. It is in a pre-compressed state. The elastic force continuously pushes the moving seat 9 in the insertion direction, so that the pin 4 obtains an outward elastic floating stroke. When the male head 2 is not inserted, the movable seat 9 is pressed against the front limit end of the limit groove 12 by the elastic force, and the pin 4 is in the initial position of "waiting to be inserted". At this time, the second spring 10 has the minimum energy storage and the system is in a stable and static state. During the insertion process, the front end of the pin 4 contacts the end face of the socket 3. If there is an axial dimension difference or insertion resistance, the socket 3 pushes the moving seat 9 backward through the pin 4, the second spring 10 is further compressed, and the limiting block 11 slides backward along the limiting groove 12, so that the pin 4 moves backward in the axial direction, realizing axial floating compensation and avoiding rigid jamming. Once the pin 4 reaches the designed insertion depth, the self-locking assembly locks the housing. At this time, the rebound force of the second spring 10 is continuously applied forward through the moving seat 9, forcing the contact surface between the pin 4 and the socket 3 to maintain a constant positive pressure, thus maintaining low contact resistance and vibration resistance.

[0033] As a further embodiment of the present invention, the guide assembly includes a plurality of guide blocks 13, which are uniformly fixed along the circumference of the outer wall of the male head 2. The inner wall of one end of the female head 1 is provided with a guide groove 14 along its length direction. The guide groove 14 is provided in multiple ways and is evenly distributed along the circumferential direction. The guide block 13 is pointed at one end near the pin 4, and the guide groove 14 is flared outward at one end near the socket 3.

[0034] In this embodiment, please refer toFigure 5 and Figure 6 When the male head 2 approaches the female head 1, the tips of each guide block 13 enter the opening of the female head 1 first. Even if there is a small radial eccentricity or angular tilt between the two housings, the tips can quickly slide to the center of the groove under the guidance of the inlet of the outward-expanding guide groove 14 to achieve coarse alignment. The guide block 13 and the guide groove 14 are evenly aligned along the circumference. After they are engaged, the relative rotational freedom of the male head 2 and the female head 1 is immediately eliminated, ensuring that the key angle of the pin 4 and the socket 3 is consistent, and avoiding damage caused by twisting during subsequent insertion. As the male connector 2 continues to push forward, the guide block 13 slides linearly along the guide groove 14. The guide groove 14 forms a rigid lateral constraint on the guide block 13, forcing the axis of the male connector 2 to coincide with the axis of the female connector 1, so that the radial deviation between the pin 4 and the socket 3 is gradually corrected to zero. When the guide block 13 slides completely into the bottom of the guide groove 14, the pin 4 just reaches the designed insertion depth.

[0035] As a further embodiment of the present invention, the self-locking assembly includes a collar 15, which is slidably sleeved on the outer wall of the female head 1, and a retaining ring 16 and a retaining ring 17 are coaxially fixedly provided on the outer wall of the female head 1. A limiting ring 18 is coaxially fixed to the inner side wall of the collar 15, and the limiting ring 18 is located between the retaining ring 16 and the retaining ring 17. The outer wall of the female head 1 is fitted with a No. 3 spring 19, and the two ends of the No. 3 spring 19 abut against the retaining ring 16 and the limiting ring 18 respectively. Under the action of the third spring 19, the limiting ring 18 always remains in close contact with the retaining ring 17 without being subjected to external force; The outer wall of the female head 1 is provided with a through hole 20. The cross-section of the through hole 20 is frustum-shaped. Multiple through holes 20 are provided and evenly distributed along the circumference. The multiple through holes 20 correspond to the limiting ring 18. Steel balls 21 are embedded in the multiple through holes 20. The outer wall of the male head 2 is provided with an annular groove 22 that cooperates with the multiple steel balls 21. When the male connector 2 drives the pin 4 to connect with the socket 3 on the female connector 1, the external force drives the collar 15 to slide, causing the limiting ring 18 to move away from the multiple through holes 20. The third spring 19 is compressed, and the male connector 2 pushes the steel ball 21 to move within the through hole 20. When the annular groove 22 aligns with the steel ball 21, the external force is removed, and the collar 15 and the limiting ring 18 are reset under the action of the third spring 19. The limiting ring 18, the steel ball 21, the through hole 20, and the annular groove 22 cooperate to lock the female connector 1 and the male connector 2.

[0036] In this embodiment, please refer to Figure 4 ,Figure 7 , Figure 8 and Figure 9 Under the preload of spring 19, collar 15 is pushed towards the end of female head 1, and limiting ring 18 is tightly attached to retaining ring 17; at this time, the inner circumferential surface of limiting ring 18 just covers the outer end of all frustum-shaped through holes 20, and steel ball 21 is pressed by limiting ring 18 towards the small diameter end of the hole, and part of steel ball 21 protrudes into the inner cavity of female head 1, forming a locking state; Before insertion, the operator pulls the collar 15 towards the retaining ring 16, and the limiting ring 18 moves accordingly and compresses the No. 3 spring 19; when the limiting ring 18 completely leaves the area of ​​the through hole 20, the steel ball 21 loses its outer constraint and can move radially outward in the through hole 20, making room for the insertion of the male head 2. The male head 2 is advanced along the guide assembly; when its outer wall passes the protruding part of the steel ball 21, it pushes the steel ball 21 outward, and the steel ball 21 moves slightly outward along the inclined surface of the frustum hole. The male head 2 continues to go deeper until the annular groove 22 is axially aligned with the through hole 20. Loosen collar 15, release spring 19, push limit ring 18 to quickly reset and cover through hole 20 again; inner conical surface of limit ring 18 presses steel ball 21 to slide inward along frustum hole, steel ball 21 is inserted into annular groove 22 of male head 2 on the inner side, and locked by limit ring 18 on the outer side, realizing axial rigid locking of female head 1 and male head 2. The axial tensile force generated by vibration or impact attempts to retract the male head 2, but the steel ball 21 cannot move outward under the dual constraint of the annular groove 22 and the limiting ring 18, and the locked state remains unchanged; the pin 4 and the socket 3 thus maintain stable engagement, ensuring reliable electrical performance.

[0037] A connection method for the aforementioned bayonet-type self-locking RF coaxial connector, characterized by comprising the following steps: Step 1: Pre-positioning preparation. Hold the female and male connectors respectively. The sliding seat inside the female connector pushes the socket to the initial insertion position under the action of spring number 1. The movable seat inside the male connector pushes the pin to the initial insertion position under the action of spring number 2. The collar is pressed tightly against the retaining ring under the action of spring number 3. The steel ball is pressed into the through hole by the limiting ring and protrudes into the inner cavity of the female connector, forming a locking state. Step 2: Unlock and coarse alignment. Pull the outer ring of the female head backward. The limiting ring moves backward with the collar and compresses the No. 3 spring, so that the steel ball in the open hole area loses its outer constraint. Move the male head close to the female head. The tip of the guide block automatically corrects the radial and angular deviations under the guidance of the inlet of the outer guide groove of the female head, so as to achieve circumferential anti-rotation and coarse alignment of the axis. Step 3: Floating insertion. Advance the male connector in a straight line along the guide groove. The pin enters the socket hole first. If there is an axial dimension difference or insertion resistance, the pin pushes the slide back through the socket and compresses the first spring. At the same time, the socket pushes the moving seat back through the pin and compresses the second spring. The two springs slide simultaneously to align the pin and the socket, completing zero-stress engagement. When the guide block reaches the bottom of the guide groove, the pin reaches the designed insertion depth, and the annular groove on the outer wall of the male connector is axially aligned with the through hole of the female connector. Step 4: Instant self-locking. Release the collar, release spring number 3, and the limiting ring quickly resets and covers the through hole. Its inner conical surface presses the steel ball inward along the frustum hole and into the annular groove. At the same time, the outer side is locked by the limiting ring, and the male and female heads achieve axial rigid locking. At this time, springs number 1 and 2 remain under pressure and store energy, continuously providing positive force to the contact surface to resist vibration and impact, and complete the high-reliability, low-loss RF connection.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bayonet-type self-locking radio frequency coaxial connector, comprising a female connector (1) and a male connector (2), characterized in that, The female connector (1) has a socket (3) that slides along its length direction via an elastic component inside, and the male connector (2) has a pin (4) that slides along its length direction via an adaptive component inside, and the socket (3) and the pin (4) are compatible with each other; A guide component is provided between the female connector (1) and the male connector (2). When the male connector (2) drives the pin (4) to connect with the socket (3) on the female connector (1), the guide component enables the pin (4) and the socket (3) to successfully complete the docking operation. A self-locking component is also provided between the female connector (1) and the male connector (2). The self-locking component can lock one end of the male connector (2) and one end of the female connector (1) together after the pin (4) and the socket (3) are fully inserted.

2. The bayonet-type self-locking RF coaxial connector according to claim 1, characterized in that, The elastic component includes a slide (5) and a first spring (6). The slide (5) is slidably disposed coaxially inside the female head (1), and the first spring (6) is disposed inside the female head (1). The two ends of the first spring (6) abut against the inner side wall of the female head (1) and the slide (5) respectively, and the socket (3) is fixedly connected to the slide (5).

3. A bayonet-type self-locking RF coaxial connector according to claim 2, characterized in that, The outer wall of the slide block (5) is fixedly provided with a slider (7), and the inner wall of the female head (1) is provided with a groove (8) along its length direction. The slider (7) is slidably disposed in the groove (8).

4. A bayonet-type self-locking RF coaxial connector according to claim 1, characterized in that, The adaptive component includes a movable seat (9) and a second spring (10). The movable seat (9) is slidably disposed coaxially inside the male head (2), and the second spring (10) is disposed inside the male head (2). The two ends of the second spring (10) abut against the inner sidewall of the male head (2) and the movable seat (9) respectively, and the pin (4) is fixedly connected to the movable seat (9).

5. A bayonet-type self-locking RF coaxial connector according to claim 4, characterized in that, The outer wall of the movable seat (9) is fixedly provided with a limiting block (11), and the inner wall of the male head (2) is provided with a limiting groove (12) along its length direction. The limiting block (11) is slidably disposed in the limiting groove (12).

6. A bayonet-type self-locking RF coaxial connector according to claim 1, characterized in that, The guide assembly includes a plurality of guide blocks (13), which are uniformly fixed along the circumference of the outer wall of the male head (2). The inner wall of one end of the female head (1) is provided with a guide groove (14) along its length direction. The guide groove (14) is provided in multiple ways and is evenly distributed along the circumference. The guide block (13) is pointed at one end near the pin (4), and the guide groove (14) is flared at one end near the socket (3).

7. A bayonet-type self-locking RF coaxial connector according to claim 1, characterized in that, The self-locking assembly includes a collar (15), which is slidably sleeved on the outer wall of the female head (1). The outer wall of the female head (1) is coaxially fixed with a retaining ring (16) and a retaining ring (17). A limiting ring (18) is coaxially fixed to the inner side wall of the collar (15), and the limiting ring (18) is located between the retaining ring (16) and the retaining ring (17).

8. A bayonet-type self-locking RF coaxial connector according to claim 7, characterized in that, The outer wall of the female head (1) is fitted with a No. 3 spring (19), and the two ends of the No. 3 spring (19) abut against the retaining ring (16) and the limiting ring (18) respectively. Under the action of the third spring (19), the limiting ring (18) always remains in close contact with the retaining ring (17) without being subjected to external force.

9. A bayonet-type self-locking RF coaxial connector according to claim 8, characterized in that, The outer wall of the female head (1) is provided with a through hole (20), the cross section of the through hole (20) is frustum-shaped, the through holes (20) are provided in multiple and evenly distributed along the circumference, the multiple through holes (20) correspond to the limiting ring (18), and a steel ball (21) is embedded in each of the multiple through holes (20). The outer wall of the male head (2) is provided with an annular groove (22) that cooperates with the multiple steel balls (21). When the male head (2) drives the pin (4) to be inserted into the socket (3) on the female head (1), the collar (15) is slid by external force, so that the limiting ring (18) moves away from the multiple through holes (20), the third spring (19) is compressed, and the male head (2) pushes the steel ball (21) to move in the through hole (20). When the annular groove (22) is aligned with the steel ball (21), the external force is removed, and the collar (15) and the limiting ring (18) are reset under the action of the third spring (19). The limiting ring (18), the steel ball (21), the through hole (20), and the annular groove (22) cooperate with each other to lock the female head (1) and the male head (2).

10. A connection method applicable to the bayonet-type self-locking RF coaxial connector according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Pre-positioning preparation. Hold the female and male connectors respectively. The sliding seat inside the female connector pushes the socket to the initial insertion position under the action of spring number 1. The movable seat inside the male connector pushes the pin to the initial insertion position under the action of spring number 2. The collar is pressed tightly against the retaining ring under the action of spring number 3. The steel ball is pressed into the through hole by the limiting ring and protrudes into the inner cavity of the female connector, forming a locking state. Step 2: Unlock and coarse alignment. Pull the outer ring of the female head backward. The limiting ring moves backward with the collar and compresses the No. 3 spring, so that the steel ball in the open hole area loses its outer constraint. Move the male head close to the female head. The tip of the guide block automatically corrects the radial and angular deviations under the guidance of the inlet of the outer guide groove of the female head, so as to achieve circumferential anti-rotation and coarse alignment of the axis. Step 3: Floating insertion. Advance the male connector in a straight line along the guide groove. The pin enters the socket hole first. If there is an axial dimension difference or insertion resistance, the pin pushes the slide back through the socket and compresses the first spring. At the same time, the socket pushes the moving seat back through the pin and compresses the second spring. The two springs slide simultaneously to align the pin and the socket, completing zero-stress engagement. When the guide block reaches the bottom of the guide groove, the pin reaches the designed insertion depth, and the annular groove on the outer wall of the male connector is axially aligned with the through hole of the female connector. Step 4: Instant self-locking, release the collar, release spring number 3, the limit ring quickly resets and covers the through hole, its inner conical surface presses the steel ball inward along the frustum hole and jams it into the annular groove, while the outer side is locked by the limit ring, the male and female heads achieve axial rigid locking. At this time, spring number 1 and spring number 2 remain under pressure and store energy, continuously providing positive force to the contact surface to resist vibration and impact, and complete the radio frequency connection.

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