Radio frequency coaxial connector assembly

Abstract

The utility model relates to the technical field of electric connector manufacturing, in particular to a radio frequency coaxial connector assembly which is formed by combining a male connector and a female connector. N guide raised lines and an annular limiting sinking groove are formed on the outer side wall of the insertion section of the male head outer conductor. N guide notches are formed in the outer side wall of the insertion section of the female head outer conductor. An anti-drop raised line is formed on the inner side wall of the insertion section of the female head outer conductor, and the anti-drop raised line is cut off by the guide notches to form N anti-drop clamping fingers. Therefore, on one hand, in the process of executing the insertion operation, each guide raised line can quickly slide into the corresponding guide notch, so that the accurate positioning is realized and the insertion difficulty is reduced; on the other hand, after the execution of the insertion operation is completed, the anti-drop clamping finger is right located in the annular limiting sinking groove, so that the phenomenon that the radio frequency coaxial connector is loosened due to the action of dragging force or exciting force can be avoided; and on the other hand, the degree of freedom of circumferential rotation of the male connector is limited, and positive electric conduction of the male contact and the female contact is easy to realize.

Description

Technical Field

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

[0002] Radio frequency coaxial connector assemblies, as key components for the electrical connection or disconnection of transmission lines, play an indispensable role in modern electronic equipment and communication systems. With the rapid development of technology, the performance requirements for them are becoming increasingly stringent.

[0003] Currently, existing RF coaxial connector designs exhibit a series of problems in practical applications, specifically: In terms of structural design, traditional RF coaxial connector assemblies lack precise and effective guiding and positioning structures when the male and female connectors mate. This makes it difficult for operators to quickly and accurately align the two connectors during mating, wasting considerable time and effort, and failing to guarantee optimal mating. Consequently, signal transmission stability is compromised, signal loss is significantly increased, and overall equipment performance is severely affected. Regarding connection stability, existing connectors have significant shortcomings in preventing accidental disconnection. During equipment operation, various factors such as vibration and external pulling forces inevitably affect the RF coaxial connector assembly, easily leading to loosening or disconnection, causing numerous problems and risks in practical applications.

[0004] In conclusion, the development of a new type of radio frequency coaxial connector assembly is urgently needed. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model discloses an RF coaxial connector assembly with a unique structural design that significantly improves the ease of mating and connection stability, while maintaining controllable manufacturing costs.

[0006] To address the aforementioned technical problems, this utility model relates to an RF coaxial connector assembly, comprising a male connector and a female connector. The male connector includes a male contact, a male insulating medium, and a male outer conductor. The male insulating medium supports the male contact and insulates the male contact and the male outer conductor from each other. The female connector includes a female contact, a female insulating medium, and a female outer conductor. The female insulating medium supports the female contact and insulates the female contact and the female outer conductor from each other. The outer wall of the mating section of the male outer conductor is simultaneously formed with guide protrusions and annular limiting grooves. The number of guide protrusions is N, and they are evenly distributed circumferentially around the central axis of the male outer conductor. The outer wall of the mating section of the female outer conductor has N circumferentially distributed guide grooves that are adapted to the guide protrusions. At a set distance from its free end, the inner wall of the mating section of the female outer conductor is formed with an anti-detachment protrusion, which is cut off by the guide groove to separate and form N isolated anti-detachment fingers. N≥3.

[0007] As a further improvement to the technical solution disclosed in this utility model, a non-planar straight line angle θ is formed between the center line of the guide protrusion and the center axis of the male outer conductor, and 20°≤θ≤30°.

[0008] As a further improvement to the technical solution disclosed in this utility model, the cross-section of the guide protrusion is an isosceles trapezoid, and its interlocking end face is beveled to form a guide slope.

[0009] As a further improvement to the technical solution disclosed in this utility model, the male insulator is composed of a first male insulator and a second male insulator. Both the first and second male insulators are embedded in the inner cavity of the outer conductor of the male insulator, spaced a predetermined distance apart, and work together to limit the degree of freedom of movement of the male contact. The male contact passes through the first male insulator, and its tail end contacts the second male insulator.

[0010] As a further improvement to the technical solution disclosed in this utility model, the female outer conductor is composed of a first female outer conductor segment and a second female outer conductor that are screwed together by means of a threaded pair.

[0011] As a further improvement to the technical solution disclosed in this utility model, the outer wall of the male outer conductor is formed with male friction-enhancing knurling. The outer wall of the first female outer conductor segment is formed with female friction-enhancing knurling. And the outer wall of the second female outer conductor is formed with a wrench tightening body.

[0012] As a further improvement to the technical solution disclosed in this utility model, the female contact member has a socket for the male contact member to be inserted. M circumferentially distributed slits, all penetrating the socket, are formed on the outer wall of the insertion section of the female contact member, thereby incidentally forming M holding arms. When the male contact member is inserted into place, each holding arm applies an elastic pressure to its circumferential sidewall.

[0013] In practical applications, the radio frequency coaxial connector assembly disclosed in this utility model can achieve at least the following beneficial technical effects, specifically:

[0014] 1) During the mating process, the operator only needs to align the male connector with the female connector, and each guide protrusion can quickly slide into the corresponding guide slot, which helps to ensure the accurate positioning of the male and female connectors, greatly reduces the difficulty of mating, and significantly improves the mating efficiency.

[0015] 2) After the mating operation is completed, the anti-disengagement finger is positioned in the annular limiting groove. This effectively ensures the stability and reliability of the connection between the male and female connectors after mating. Even when subjected to axial drag or vibration, the two will not loosen or separate.

[0016] 3) With the synergistic effect of the guide protrusion and guide groove, the circumferential rotational freedom of the male connector is limited compared to the female connector. Good electrical conduction can be easily achieved between the male and female contacts, thereby effectively eliminating signal loss and signal interference caused by changes in their relative positions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the radio frequency coaxial connector assembly disclosed in this utility model.

[0019] Figure 2 This is an exploded view of the radio frequency coaxial connector assembly disclosed in this utility model.

[0020] Figure 3 This is a three-dimensional schematic diagram of the male connector in the radio frequency coaxial connector assembly disclosed in this utility model.

[0021] Figure 4 yes Figure 3 The front view.

[0022] Figure 5 yes Figure 4 AA sectional view.

[0023] Figure 6 This is a three-dimensional schematic diagram of the male outer conductor of the radio frequency coaxial connector assembly disclosed in this utility model.

[0024] Figure 7 This is a three-dimensional schematic diagram of the male outer conductor of the radio frequency coaxial connector assembly disclosed in this utility model from another perspective.

[0025] Figure 8 This is a three-dimensional schematic diagram of the female connector in the radio frequency coaxial connector assembly disclosed in this utility model.

[0026] Figure 9 yes Figure 8 The front view.

[0027] Figure 10 yes Figure 9 BB cross-sectional view.

[0028] Figure 11 This is a three-dimensional schematic diagram of the female contact component in the radio frequency coaxial connector assembly disclosed in this utility model.

[0029] Figure 12 This is a three-dimensional schematic diagram of the female outer conductor in the radio frequency coaxial connector assembly disclosed in this utility model.

[0030] Figure 13 This is a three-dimensional schematic diagram of the first female outer conductor segment in the radio frequency coaxial connector assembly disclosed in this utility model.

[0031] Figure 14 This is a three-dimensional schematic diagram of the outer conductor segment of the second female connector in the radio frequency coaxial connector assembly disclosed in this utility model.

[0032] Figure 15 yes Figure 1 The front view.

[0033] Figure 16 yes Figure 15 CC section view.

[0034] Figure 17 yes Figure 15 DD sectional view.

[0035] 1-Male connector; 11-Male contact; 12-Male insulating medium; 121-First male insulator; 122-Second male insulator; 13-Male outer conductor; 131-Guide protrusion; 1311-Guide slope; 132-Annular limiting groove; 133-Male friction-enhancing knurled; 2-Female connector; 21-Female contact; 211-Socket; 212-Holding arm; 22-Female insulating medium; 23-Female outer conductor; 231-First female outer conductor segment; 2311-Guide groove; 2312-Anti-detachment protrusion; 23121-Anti-detachment locking finger; 2313-Female friction-enhancing knurled; 232-Second female outer conductor; 2321-Wrench tightening body. Detailed Implementation

[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "front", "back", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] A radio frequency coaxial connector assembly is a component that is attached to a cable or installed on an instrument, serving as an element for electrical connection or disconnection of transmission lines.

[0038] The contents disclosed in this utility model will be further described in detail below with reference to specific embodiments, such as... Figure 1 , Figure 2 As shown, the RF coaxial connector assembly is composed of a male connector 1 and a female connector 2. In RF circuits, the male connector 1 is commonly used to connect the output ports of devices such as signal sources and transmitters, as well as the input ports of devices such as antennas and RF cables. The female connector 2 is commonly used to connect the input ports of devices such as RF cables and receivers, as well as the connections between various RF components. The two work together to achieve efficient and stable RF signal transmission.

[0039] like Figure 3 , Figure 4 , Figure 5As shown, the male connector 1 mainly consists of several parts, including a male contact 11, a male insulating medium 12, and a male outer conductor 13. The male insulating medium 12 supports the male contact 11 and insulates the male contact 11 from the male outer conductor 13. The male contact 11, as the inner conductor for signal transmission, is made of a highly conductive metal material, such as gold-plated phosphor bronze, to ensure good electrical conductivity. The male insulating medium 12 typically uses high-performance insulating materials such as polytetrafluoroethylene (PTFE), which has low dielectric constant and low loss characteristics to reduce energy loss and distortion during signal transmission. The male outer conductor 13 acts as a shield to prevent external electromagnetic interference from affecting the signal transmission process, and also provides mechanical support and protection for the connector. To improve its corrosion resistance and conductivity, the male outer conductor 13 undergoes electroplating. The outer wall of the mating section of the male outer conductor 13 is simultaneously formed with a guide protrusion 131 and an annular limiting groove 132. The number of guide protrusions 131 is at least 3, and they are evenly distributed circumferentially around the central axis of the male outer conductor 13 (e.g., Figure 6 , Figure 7 (as shown in the image).

[0040] like Figure 8 , Figure 9 , Figure 10 As shown, the female connector 2 mainly consists of several parts, including the female contact 21, the female insulating medium 22, and the female outer conductor 23. The female insulating medium 22 supports the female contact 21 and insulates the female contact 21 from the female outer conductor 23. The female contact 21, as the inner conductor for signal transmission, is made of a highly conductive metal material, such as gold-plated beryllium bronze, to ensure good electrical conductivity. The female insulating medium 22 typically uses high-performance insulating materials such as polyetherimide, which has low dielectric constant and low loss characteristics, and is preferably a uniform six-hole structure. Working in conjunction with the male outer conductor 13, the female outer conductor 23 acts as a shield to prevent external electromagnetic interference from affecting the signal transmission process, while also providing mechanical support and protection for the connector. Figure 12 As shown, the female outer conductor 23 is composed of a first female outer conductor segment 231 and a second female outer conductor 232, and is screwed together by a threaded joint. To improve its corrosion resistance and conductivity, both the female outer conductor segment 231 and the second female outer conductor 232 are electroplated. Figure 13 As shown, the outer sidewall of the first female outer conductor segment 231, which is inserted, has multiple circumferentially distributed guide slots 2311 that are adapted to the guide protrusions 131. Furthermore, at a set distance from its free end, the inner sidewall of the first female outer conductor segment 231, which is inserted, has anti-detachment protrusions 2312 formed, and these protrusions are cut off by the guide slots 2311 to separate and form multiple isolated anti-detachment locking fingers 23121.

[0041] like Figure 15 , Figure 16 , Figure 17 As shown, when performing RF coaxial connector assembly operations, it is recommended to refer to the following steps:

[0042] S1. Align the mating sections of male connector 1 and female connector 2 so that the mating section of male outer conductor 1 and female outer conductor 2 are coaxial, which facilitates the subsequent docking of guide protrusion 131 and guide groove 2311.

[0043] S2. Slowly push the male connector 1 towards the female connector 2. At this time, the guide protrusion 131 on the outer wall of the mating section of the male outer conductor 13 will automatically align with the guide groove 2311 on the outer wall of the mating section of the female outer conductor 23. Thanks to the matching design of the guide protrusion 131 and the guide groove 2311, the male connector 1 will be accurately inserted along the direction of the guide groove 2311 during the pushing process, without the need for additional complicated alignment operations.

[0044] S3. Continue to advance the male connector 1. When the male outer conductor 13 is close to the inside of the female outer conductor 23, carefully observe the insertion depth. As the male connector 1 is inserted, the anti-disengagement finger 23121 on the inner wall of the female outer conductor 23 will gradually approach the annular limiting groove 132 of the male outer conductor 13.

[0045] S4. When the male connector 1 is inserted into the set position, the multiple isolated anti-disengagement clips 23121 on the inner side wall of the mating section of the female outer conductor 23 will be locked into the annular limiting groove 132 of the male outer conductor 13 due to elastic deformation, and a slight "click" sound will be emitted, indicating that the male connector 1 and the female connector 2 have been mated and mechanically locked. At this time, the RF coaxial connector assembly is completed.

[0046] As described above, during the mating process, the operator only needs to align the male connector 1 with the female connector 2, and each guide protrusion 131 can quickly slide into the corresponding guide groove 2311, which helps to ensure the accurate positioning of the male connector 1 and the female connector 2, greatly reduces the difficulty of mating, and significantly improves the mating efficiency.

[0047] Furthermore, after the mating operation is completed, the anti-disengagement finger 23121 is positioned within the annular limiting groove 132. This effectively ensures the stability and reliability of the connection between the male connector 1 and the female connector 2 after mating. Even when subjected to axial drag or vibration, the two will not loosen or separate.

[0048] It is also important to note that, under the synergistic effect of the guide protrusion 131 and the guide groove 2311, the circumferential rotational freedom of the male connector 1 is limited relative to the female connector 2, and good electrical conduction can be easily achieved between the male contact 11 and the female contact 21, thereby effectively eliminating the phenomenon of signal loss and signal interference due to the change of their relative positions.

[0049] like Figure 6 , Figure 7 As shown, a non-planar straight line angle θ is formed between the centerline of the guide protrusion 131 and the center axis of the male outer conductor 13, and 20°≤θ≤30°. In this way, on the one hand, during the mating process of the male connector 1 and the female connector 2, thanks to the existence of the non-planar straight line angle θ, the guide protrusion 131 generates an oblique component force when inserted into the guide slot 2311, which can disperse the resistance during the insertion and removal process to a certain extent, reducing the risk of damage to the connector components caused by excessive force during insertion and removal, and making the removal operation more damped, significantly improving the user's operating experience; on the other hand, the radial and circumferential relative displacement of the RF coaxial connector assembly is effectively limited, preventing loosening or misalignment due to vibration, external impact, or other factors during application.

[0050] Furthermore, similarly Figure 6 , Figure 7 As can be clearly seen from the diagram, the cross-section of the guide protrusion 131 is an isosceles trapezoid, and its mating end face is beveled to form a guide bevel 1311. Thus, when the male connector 1 and female connector 2 are mated, the guide bevel 1311 acts as a guide, automatically guiding the guide protrusion 131 quickly and accurately to the guide slot 2311. Furthermore, the isosceles trapezoidal shape causes the contact area between the guide protrusion 131 and the guide slot 2311 to gradually increase during insertion, which can reduce the initial insertion resistance to a certain extent.

[0051] like Figure 4 , Figure 5 As shown, the male connector insulating medium 12 consists of a first male connector insulator 121 and a second male connector insulator 122. Both the first male connector insulator 121 and the second male connector insulator 122 are embedded in the inner cavity of the male connector outer conductor 13, spaced a predetermined distance apart, and work together to limit the degree of freedom of movement of the male connector contact 11. The male connector contact 11 passes through the first male connector insulator 121, and its tail end contacts the second male connector insulator 122. In this way, the degree of freedom of movement of the male connector contact 11 is effectively limited. During the operation of the RF coaxial connector assembly, it will not shift its position due to vibration, external forces, or other factors, thus eliminating problems such as signal reflection and attenuation caused by changes in the position of the male connector contact 11.

[0052] To improve the operator's grip and reduce the difficulty of assembly, as a further optimization of the above technical solution, such as... Figure 6 , Figure 7 , Figure 8 , Figure 12 , Figure 13 As shown, the outer wall of the male outer conductor 13 is formed with male friction knurling 133. The outer wall of the first female outer conductor segment 231 is formed with female friction knurling 2313. And the outer wall of the second female outer conductor 232 is formed with a wrench tightening body 2321.

[0053] like Figure 9 , Figure 10 , Figure 11 As shown, the female contact 21 has a recess 211 formed on its end for the male contact 11 to be inserted. Multiple circumferentially distributed slits, all penetrating the recess 211, are formed on the outer wall of the insertion section of the female contact 21, thereby incidentally forming multiple holding arms 212. When the male contact 1 is inserted into place, each holding arm 212 applies elastic pressure to its circumferential sidewall to form a tight multi-point contact. Thus, on the one hand, in the inserted state, the elastic force applied by the holding arms 212 firmly "holds" the male contact 11, effectively limiting its axial and radial displacement and preventing loosening or detachment due to vibration, external pulling, etc.; on the other hand, during the insertion of the male contact 11, the holding arms 212 can elastically adjust according to slight deviations in the insertion angle and position, reducing the difficulty of insertion and improving assembly convenience.

[0054] Finally, it should be noted that thanks to the multi-point contact mode between the male contact 1 and the female contact 21, the contact resistance is effectively reduced, thereby reducing signal transmission loss and heat generation.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radio frequency coaxial connector assembly, comprising a male connector and a female connector; the male connector includes a male contact, a male insulating medium, and a male outer conductor; the male insulating medium supports the male contact and insulates the male contact and the male outer conductor from each other; the female connector includes a female contact, a female insulating medium, and a female outer conductor; the female insulating medium supports the female contact and insulates the female contact and the female outer conductor from each other, characterized in that, The outer wall of the mating section of the male outer conductor is simultaneously formed with guide protrusions and annular limiting grooves; the number of guide protrusions is N, and they are evenly distributed circumferentially around the central axis of the male outer conductor; the outer wall of the mating section of the female outer conductor is provided with N circumferentially evenly distributed guide grooves that are adapted to the guide protrusions; at a set distance from their free ends, the inner wall of the mating section of the female outer conductor is formed with anti-detachment protrusions, and these protrusions are cut off by the guide grooves to form N isolated anti-detachment fingers; N≥3.

2. The RF coaxial connector assembly according to claim 1, characterized in that, The centerline of the guide protrusion and the center axis of the male outer conductor form an angle θ between skew lines, and 20°≤θ≤30°.

3. The RF coaxial connector assembly according to claim 2, characterized in that, The cross-section of the guide protrusion is an isosceles trapezoid, and its interlocking end face is beveled to form a guide slope.

4. The RF coaxial connector assembly according to claim 1, characterized in that, The male head insulating medium is composed of a first male head insulator and a second male head insulator; the first male head insulator and the second male head insulator are both embedded in the inner cavity of the male head outer conductor, spaced at a set distance, and cooperate to limit the degree of freedom of movement of the male head contact; and the male head contact passes through the first male head insulator, while its tail end contacts the second male head insulator.

5. The RF coaxial connector assembly according to claim 1, characterized in that, The female outer conductor consists of a first female outer conductor segment and a second female outer conductor, which are screwed together by means of a threaded pair.

6. The RF coaxial connector assembly according to claim 5, characterized in that, The outer wall of the male outer conductor is formed with male friction knurling; the outer wall of the first female outer conductor segment is formed with female friction knurling; and the outer wall of the second female outer conductor is formed with a wrench tightening body.

7. The radio frequency coaxial connector assembly according to any one of claims 1-6, characterized in that, The female contact has a socket for the male contact to be inserted into; the outer wall of the insertion section of the female contact has M circumferentially distributed slits that are all connected to the socket, so as to incidentally form M holding arms; when the male contact is inserted into place, each of the holding arms applies an elastic pressure to its circumferential sidewall.

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