Radio frequency coaxial connector assembly

Abstract

The invention 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] The present invention relates to the technical field of electrical connector manufacturing, and in particular to a radio frequency coaxial connector assembly. Background Art

[0002] As a key component for electrical connection or separation of transmission lines, the radio frequency coaxial connector assembly plays an indispensable role in modern electronic devices and communication systems. With the rapid development of technology, the requirements for its performance are becoming increasingly stringent.

[0003] Regarding the current industry situation, a series of problems have emerged in the practical application of existing radio frequency coaxial connectors, which are as follows: In terms of structural design, when the male connector and the female connector of the traditional radio frequency coaxial connector assembly are mated, there is a lack of a precise and effective guiding and positioning structure, resulting in difficulties for operators to quickly and accurately align the two during the mating operation, consuming a large amount of time and effort, and unable to ensure the best mating state. As a result, the signal transmission stability is lacking, and the signal loss is significantly increased, which seriously affects the overall performance of the device. In terms of connection stability, there are obvious deficiencies in the design of preventing accidental disconnection of existing connectors. During the operation of the device, it is inevitably affected by various factors such as vibration and external force pulling, which easily leads to problems such as loosening or disconnection of the radio frequency coaxial connector assembly, bringing many troubles and risks to practical applications.

[0004] In summary, it is urgent to develop a new type of radio frequency coaxial connector assembly. Summary of the Invention

[0005] To solve the problems existing in the prior art, the present invention discloses a radio frequency coaxial connector assembly with a unique structural design, which significantly improves the mating convenience and connection stability, and at the same time, the manufacturing cost is controllable.

[0006] In order to solve the above technical problems, the present invention relates to a radio frequency coaxial connector assembly, which is composed of 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 is used to support the male contact and insulate the male contact from the male outer conductor. The female connector includes a female contact, a female insulating medium, and a female outer conductor. The female insulating medium is used to support the female contact and insulate the female contact from the female outer conductor. On the outer side wall of the mating section of the male outer conductor, a guiding rib and an annular limiting groove are formed simultaneously. The number of guiding ribs is N, and they are circumferentially evenly distributed around the central axis of the male outer conductor. On the outer side wall of the mating section of the female outer conductor, N guiding slots are provided, which are circumferentially evenly distributed and adapted to the guiding ribs. At a set value away from its free end, an anti-disengagement rib is formed on the inner side wall of the mating section of the female outer conductor, and it is cut off by the guiding slot to be separated into N isolated anti-disengagement fingers. N≥3.

[0007] As a further improvement of the technical solution disclosed by the present invention, a skew angle θ is formed between the center line of the guiding rib and the central axis of the male outer conductor, and 20°≤θ≤30°.

[0008] As a further improvement of the technical solution disclosed by the present invention, the cross section of the guiding rib is in the shape of an isosceles trapezoid, and its mating end face is beveled to form a guiding slope.

[0009] As a further improvement of the technical solution disclosed by the present invention, the male insulating medium is composed of a first male insulator and a second male insulator. Both the first male insulator and the second male insulator are installed in the inner cavity of the male outer conductor, with a set distance between them, and they cooperate to limit the degree of freedom of movement of the male contact. And the male contact penetrates through the first male insulator, and its tail end abuts against the second male insulator.

[0010] As a further improvement of the technical solution disclosed by the present invention, the female outer conductor is composed of a first female outer conductor segment and a second female outer conductor, which are screwed together by means of a thread pair.

[0011] As a further improvement of the technical solution disclosed by the present invention, male anti-slip knurling is formed on the outer side wall of the male outer conductor. Female anti-slip knurling is formed on the outer side wall of the first female outer conductor segment. And a wrench applying body is formed on the outer side wall of the second female outer conductor.

[0012] As a further improvement of the technical solution disclosed by the present invention, a jack for inserting a male contact member is formed on the female contact member. M slitting grooves which are circumferentially and uniformly distributed on the outer side wall of the insertion section of the female contact member and are all communicated with the jack are formed, so as to form M holding arms incidentally. After the male contact member is inserted in place, each holding arm applies an elastic pressing force to its circumferential side wall.

[0013] In practical applications, the RF coaxial connector assembly disclosed by the present invention can at least achieve the following beneficial technical effects: specifically

[0014] 1) During the insertion operation process, the operator only needs to align the male connector with the female connector, and each guiding rib can quickly slide into the corresponding guiding groove one by one, which is beneficial to ensuring the accurate positioning of the male connector and the female connector, greatly reducing the insertion difficulty, and significantly improving the insertion efficiency;

[0015] 2) After the insertion operation is completed, the anti-disengagement card is just settled in the annular limiting sunk groove. In this way, the stability and reliability of the connection between the male connector and the female connector after the insertion is completed can be effectively ensured. Even when subjected to an axial dragging force or a vibration force, the two will not loosen or disengage;

[0016] 3) Under the synergistic action of the guiding rib and the guiding groove, the circumferential rotation freedom degree of the male connector relative to the female connector is limited, and good electrical conduction is easily achieved between the male contact member and the female contact member, so as to effectively eliminate the signal loss and signal interference phenomena caused by the change of their relative positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a three-dimensional schematic diagram of the RF coaxial connector assembly disclosed by the present invention.

[0019] Figure 2 is an exploded schematic diagram of the RF coaxial connector assembly disclosed by the present invention.

[0020] Figure 3 is a three-dimensional schematic diagram of the male connector in the RF coaxial connector assembly disclosed by the present invention.

[0021] Figure 4 is Figure 3 front view of

[0022] Figure 5 is Figure 4 the A-A sectional view of

[0023] Figure 6 is a perspective three-dimensional schematic diagram of a certain perspective of the male outer conductor in the radio frequency coaxial connector assembly disclosed by the present invention.

[0024] Figure 7 is a perspective three-dimensional schematic diagram of another perspective of the male outer conductor in the radio frequency coaxial connector assembly disclosed by the present invention.

[0025] Figure 8 is a perspective three-dimensional schematic diagram of the female connector in the radio frequency coaxial connector assembly disclosed by the present invention.

[0026] Figure 9 is Figure 8 the front view of

[0027] Figure 10 is Figure 9 the B-B sectional view of

[0028] Figure 11 is a perspective three-dimensional schematic diagram of the female contact in the radio frequency coaxial connector assembly disclosed by the present invention.

[0029] Figure 12 is a perspective three-dimensional schematic diagram of the female outer conductor in the radio frequency coaxial connector assembly disclosed by the present invention.

[0030] Figure 13 is a perspective three-dimensional schematic diagram of the segmented first female outer conductor in the radio frequency coaxial connector assembly disclosed by the present invention.

[0031] Figure 14 is a perspective three-dimensional schematic diagram of the segmented second female outer conductor in the radio frequency coaxial connector assembly disclosed by the present invention.

[0032] Figure 15 is Figure 1 the front view of

[0033] Figure 16 is Figure 15 the C-C sectional view of

[0034] Figure 17 is Figure 15 the D-D sectional view of

[0035] 1 - male connector; 11 - male contact; 12 - male insulating medium; 121 - first male insulator; 122 - second male insulator; 13 - male outer conductor; 131 - guiding rib; 1311 - guiding slope; 132 - annular limiting groove; 133 - male anti - slip knurling; 2 - female connector; 21 - female contact; 211 - jack; 212 - holding arm; 22 - female insulating medium; 23 - female outer conductor; 231 - first female outer conductor segment; 2311 - guiding notch; 2312 - anti - detachment rib; 23121 - anti - detachment finger; 2313 - female anti - slip knurling; 232 - second female outer conductor; 2321 - wrench applying body. Detailed implementation mode

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "left", "right", "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 thus should not be construed as a limitation to the present invention.

[0037] The radio frequency coaxial connector assembly is an element installed on a cable or on an instrument and serves as an element for electrical connection or separation of a transmission line.

[0038] The following will further elaborate on the content disclosed in the present invention in combination with specific embodiments, as Figure 1 、 Figure 2 shown, the radio frequency coaxial connector assembly is composed of a male connector 1 and a female connector 2. In a radio frequency circuit, 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 antennas, radio frequency cables, etc., while the female connector 2 is commonly used to connect the input ports of devices such as radio frequency cables and receivers, as well as the connections between various radio frequency components. The two cooperate with each other to achieve efficient and stable radio frequency signal transmission.

[0039] As Figure 3 、 Figure 4 、 Figure 5As shown in the figure, the male connector 1 mainly consists of several parts such as male contact 11, male insulating medium 12, and male outer conductor 13. Among them, the male insulating medium 12 is used to support the male contact 11 and insulate 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 metal material with high electrical conductivity, such as phosphor bronze plated with gold, to ensure good electrical conductivity. The male insulating medium 12 usually uses high-performance insulating materials such as polytetrafluoroethylene, which has the characteristics of low dielectric constant and low loss, to reduce energy loss and distortion during signal transmission. The male outer conductor 13 plays a shielding role to prevent the influence of external electromagnetic interference on the signal transmission process, and at the same time provides mechanical support and protection for the connector. Considering the improvement of its corrosion resistance and conductivity, the male outer conductor 13 is subjected to electroplating treatment. On the outer side wall of the mating section of the male outer conductor 13, a guiding rib 131 and an annular limiting groove 132 are formed simultaneously. The number of guiding ribs 131 is at least 3 and they are circumferentially evenly distributed around the central axis of the male outer conductor 13 (as Figure 6 , Figure 7 shown in the figure).

[0040] As Figure 8 , Figure 9 , Figure 10 shown in the figure, the female connector 2 mainly consists of several parts such as female contact 21, female insulating medium 22, and female outer conductor 23. Among them, the female insulating medium 22 is used to support the female contact 21 and insulate 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 metal material with high electrical conductivity, such as beryllium bronze plated with gold, to ensure good electrical conductivity. The female insulating medium 22 usually uses high-performance insulating materials such as polyetherimide, which has the characteristics of low dielectric constant and low loss, and is preferably in the shape of a lotus root with a uniform six-hole structure. In cooperation with the male outer conductor 13, the female outer conductor 23 plays a shielding role to prevent the influence of external electromagnetic interference on the signal transmission process, and at the same time provides mechanical support and protection for the connector. As Figure 12 shown in the figure, the female outer conductor 23 is composed of a first female outer conductor segment 231 and a second female outer conductor 232, and they are screwed together by a screw pair. Considering the improvement of its corrosion resistance and conductivity, both the first female outer conductor segment 231 and the second female outer conductor 232 are subjected to electroplating treatment. As Figure 13 shown in the figure, on the outer side wall of the mating section of the first female outer conductor segment 231, a plurality of guiding slots 2311 are provided, which are circumferentially evenly distributed and are adapted to the above-mentioned guiding ribs 131. Furthermore, at a set distance from its free end, an anti-detachment rib 2312 is formed on the inner side wall of the mating section of the first female outer conductor segment 231, and it is cut off by the guiding slot 2311 to form a plurality of isolated anti-detachment fingers 23121.

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

[0042] S1. Align the mating sections of the male connector 1 and the female connector 2 so that the mating section of the male outer conductor 1 and the mating section of the female outer conductor 2 are in a coaxial state, facilitating the subsequent docking of the guiding rib 131 and the guiding notch 2311;

[0043] S2. Slowly push the male connector 1 towards the female connector 2. At this time, the guiding rib 131 on the outer side wall of the mating section of the male outer conductor 13 will automatically align with the guiding notch 2311 on the outer side wall of the mating section of the female outer conductor 23. Thanks to the adapted design of the guiding rib 131 and the guiding notch 2311, the male connector 1 will be accurately inserted along the direction of the guiding notch 2311 during the pushing process without additional complex alignment operations;

[0044] S3. Continuously push the male connector 1. When the mating section of the male outer conductor 13 approaches the inside of the mating section of the female outer conductor 23, pay attention to observing the insertion depth. As the male connector 1 is inserted, the anti - detachment catch finger 23121 on the inner side wall of the mating section of the female outer conductor 23 will gradually approach the annular limiting sink 132 of the male outer conductor 13;

[0045] S4. When the male connector 1 is inserted to the set position, multiple isolated anti - detachment catch fingers 23121 on the inner side wall of the mating section of the female outer conductor 23 will elastically deform and snap into the annular limiting sink 132 of the male outer conductor 13, emitting a slight "click" sound, indicating that the male connector 1 and the female connector 2 have completed mating and achieved mechanical locking. At this time, the assembly of the RF coaxial connector assembly is completed.

[0046] As can be seen from the above description, during the mating operation process, the operator only needs to align the male connector 1 with the female connector 2, and each guiding rib 131 can quickly slide into the corresponding guiding notch 2311 one by one, which is conducive to ensuring the accurate positioning of the male connector 1 and the female connector 2, greatly reducing the mating difficulty, and significantly improving the mating efficiency.

[0047] Furthermore, when the mating operation is completed, the anti - detachment catch finger 23121 is exactly located in the annular limiting sink 132. In this way, the stability and reliability of the connection between the male connector 1 and the female connector 2 in the mated state are effectively ensured. Even when subjected to axial dragging force or vibration force, the two will not loosen or disconnect.

[0048] Here, it should be emphasized that under the combined action of the guiding rib 131 and the guiding notch 2311, the circumferential rotational freedom of the male connector 1 is limited relative to the female connector 2, and it is easy to achieve good electrical conduction between the male contact member 11 and the female contact member 21, thus effectively eliminating the phenomena of signal loss and signal interference caused by the change of their relative positions.

[0049] As Figure 6 、 Figure 7 shown in, there is a skew line angle θ formed between the center line of the guiding rib 131 and the central axis of the male outer conductor 13, and 20° ≤ θ ≤ 30°. In this way, on the one hand, during the insertion process of the male connector 1 and the female connector 2, due to the existence of the skew line angle θ, a component force in the oblique direction is generated when the guiding rib 131 is inserted into the guiding notch 2311, which can disperse the resistance during the plugging and unplugging process to a certain extent, reduce the risk of damage to the connector components caused by excessive force during plugging and unplugging, and make the unplugging operation have a sense of damping, significantly improving the user's operation experience; on the other hand, the relative displacement in the radial and circumferential directions of the radio frequency coaxial connector assembly is effectively restricted, preventing it from loosening or misaligning due to factors such as vibration and external force impact during application.

[0050] Furthermore, as Figure 6 、 Figure 7 shown in, it can also be clearly known that the cross-section of the guiding rib 131 is an isosceles trapezoid, and its mating end face is chamfered to form a guiding slope 1311. In this way, during the insertion of the male connector 1 and the female connector 2, the guiding slope 1311 can play a guiding role, automatically guiding the guiding rib 131 to quickly and accurately guide into the notch 2311. Furthermore, the isosceles trapezoid shape makes the contact area between the guiding rib 131 and the guiding notch 2311 gradually increase during the insertion process, which can reduce the initial insertion resistance to a certain extent.

[0051] As Figure 4 、 Figure 5 shown in, the male insulating medium 12 is composed of a first male insulator 121 and a second male insulator 122. Both the first male insulator 121 and the second male insulator 122 are installed in the inner cavity of the male outer conductor 13, with a set distance between them, and they cooperate with each other to limit the movement freedom of the male contact member 11. And the male contact member 11 passes through the first male insulator 121, and its tail end abuts against the second male insulator 122. In this way, the movement freedom of the male contact member 11 is effectively restricted. During the operation of the radio frequency coaxial connector assembly, it will not shift in position due to factors such as vibration and external force, thus eliminating problems such as signal reflection and attenuation caused by the position change of the male contact member 11.

[0052] For the purpose of improving the handheld feeling of the operator and reducing the difficulty of insertion and assembly, as a further optimization of the above technical solution, as shown in Figure 6 , Figure 7 , Figure 8 , Figure 12 , Figure 13 , a male head anti-slip knurl 133 is formed on the outer side wall of the male head outer conductor 13. A female head anti-slip knurl 2313 is formed on the outer side wall of the first female head outer conductor segment 231. And a wrench application body 2321 is formed on the outer side wall of the second female head outer conductor 232.

[0053] As shown in Figure 9 , Figure 10 , Figure 11 , a jack 211 for inserting the male head contact 11 is formed at the end of the female head contact 21. A plurality of slitting cracks that are circumferentially evenly distributed and communicate with the jack 211 are formed on the outer side wall of the insertion section of the female head contact 21, so as to incidentally form a plurality of holding arms 212. After the male head contact 1 is inserted in place, each holding arm 212 applies an elastic pressing force to its circumferential side wall to form a multi-point tight contact. In this way, on the one hand, in the inserted state, the elastic force applied by the holding arms 212 firmly "holds" the male head contact 11, effectively restricting its displacement in the axial and radial directions, and preventing problems such as loosening or falling off caused by vibration, external force pulling, etc.; on the other hand, during the insertion process of the male head contact 11, the holding arms 212 can be elastically adjusted according to the slight deviation of the insertion angle and position, reducing the insertion difficulty and improving the assembly convenience.

[0054] Finally, it should also be noted that thanks to the multi-point contact mode between the male head contact 1 and the female head contact 21, the contact resistance is effectively reduced, and the loss and heating phenomenon during signal transmission are reduced.

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

Claims

1. A radio frequency coaxial connector assembly is composed of 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 is used to support the male contact and insulate the male contact from the male outer conductor; the female connector includes a female contact, a female insulating medium, and a female outer conductor; the female insulating medium is used to support the female contact and insulate the female contact from the female outer conductor, and is characterized in that, On the outer side wall of the insertion section of the male outer conductor, a guiding rib and an annular limiting sunk groove are simultaneously formed; the number of the guiding ribs is N, and they are circumferentially and evenly distributed around the central axis of the male outer conductor; on the outer side wall of the insertion section of the female outer conductor, N guiding slots are provided, which are circumferentially and evenly distributed and are adapted to the guiding ribs; at a set value away from its free end, an anti-detachment rib is formed on the inner side wall of the insertion section of the female outer conductor, and it is cut off by the guiding slot to form N isolated anti-detachment fingers; N≥3.

2. The RF coaxial connector assembly according to claim 1, wherein, An angle θ between the center line of the guiding rib and the central axis of the male outer conductor forms a skew line angle, and 20°≤θ≤30°.

3. The RF coaxial connector assembly according to claim 2, wherein The cross-section of the guiding rib is an isosceles trapezoid, and its mating end face is obliquely cut to form a guiding slope.

4. The RF coaxial connector assembly according to claim 1, wherein, The male insulating medium is composed of a first male insulator and a second male insulator; both the first male insulator and the second male insulator are embedded in the inner cavity of the male outer conductor, with a set distance between them, and they cooperate to limit the movement freedom of the male contact; and the male contact penetrates through the first male insulator, and its tail end abuts against the second male insulator.

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

6. The RF coaxial connector assembly according to claim 5, wherein On the outer side wall of the male outer conductor, male anti-slip knurling is formed; on the outer side wall of the first female outer conductor segment, female anti-slip knurling is formed; and on the outer side wall of the second female outer conductor, a wrench applying body is formed.

7. The RF coaxial connector assembly according to any one of claims 1-6, characterized in that, On the female contact, a jack for inserting the male contact is formed; on the outer side wall of the insertion section of the female contact, M slitting cracks are provided, which are circumferentially and evenly distributed and are all communicated with the jack, so as to incidentally form M holding arms; when the male contact is inserted in place, each holding arm applies an elastic pressing force to its circumferential side wall.

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