Radio frequency connector
By setting a potting cavity in the RF connector and filling it with adhesive material to fix the center pin, combined with a limiting structure and retaining ring design, the short circuit problem caused by the rotation of the inner conductor is solved, and the stability of signal transmission and the center pin is achieved.
Patent Information
- Application Number
- CN202423010714.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Traditional RF coaxial connectors are prone to inner conductor rotation during insertion and removal, which can cause short circuits between the cable core and the connector's inner conductor, affecting signal transmission stability.
A potting cavity is made in the inner shell and the insulator. Adhesive material is poured in to fix the center pin, the inner shell and the insulator, preventing the center pin from rotating relative to the inner shell. The inner shell is fixed by a limiting structure and a retaining ring to ensure the stability of the center pin position.
It effectively avoids short circuits between the cable core and the center pin, ensuring the stability of RF connector signal transmission, and features a simple structure and stable center pin position.
Smart Images
Figure CN223625272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable connectors, specifically to a radio frequency connector. Background Technology
[0002] Radio frequency (RF) coaxial connectors are components that are attached to cables or installed on instruments. They serve as electrical connections and disconnections for transmission lines, acting as ports for electrical equipment and cables. Currently, RF coaxial connectors are evolving towards miniaturization, high density, high frequency, high reliability, and interference resistance. Spread spectrum technology is an important aspect of extending the electrical performance of connectors. Spread spectrum expands the existing frequency band by modifying the structure of existing connectors without increasing costs.
[0003] Traditional RF coaxial connectors have an inner conductor that is only fixed to the inner shell by an insulator. This can cause the inner conductor to rotate during the connector insertion and removal process, which can easily cause a short circuit between the cable core and the connector's inner conductor, affecting the normal use of the RF connector. Utility Model Content
[0004] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a radio frequency connector.
[0005] To achieve the above objectives, the technical solution adopted by this utility model includes: an outer shell having a through-hole accommodating space therein; an inner shell having a first end and a second end, the first end extending into the outer shell and the second end not extending into the outer shell; a center pin disposed within the inner shell by means of an insulator; wherein, a potting cavity is formed on the inner shell and the insulator, which is through-hole and conductive along the radial direction of the inner shell, and the potting cavity is filled with an adhesive material to bond the center pin to the insulator and the inner shell.
[0006] In the preferred embodiment of the above-mentioned RF connector, the inner housing has a first cavity and a second cavity that pass through the first end and the second end and are connected to each other, and the center pin is disposed in the first cavity.
[0007] In the preferred embodiment of the above-mentioned RF connector, the center pin has a slot at its end near the second end of the inner housing for connection with the cable core inserted through the second cavity.
[0008] In the preferred embodiment of the above-described RF connector, the slot has a gradually increasing cross-section along the direction toward the slot port.
[0009] In the preferred embodiment of the above-described RF connector, the second cavity has a gradually increasing cross-section along the direction toward the second end of the inner housing.
[0010] In the preferred embodiment of the above-mentioned RF connector, the inner housing has an exhaust port that penetrates the second cavity on the surface near the second end.
[0011] In the preferred embodiment of the above-mentioned RF connector, a limiting protrusion protruding toward the second end is provided on the inner wall of the first cavity of the inner housing.
[0012] In the preferred embodiment of the above-mentioned RF connector, when the center pin is placed inside the inner housing, an annular groove corresponding to the position of the potting cavity is formed on the circumferential surface of the center pin.
[0013] In the preferred embodiment of the above-mentioned RF connector, the housing is snapped into the receiving space of the housing by means of a retaining ring.
[0014] In the preferred embodiment of the above-mentioned RF connector, the inner housing has a stepped layer formed on the outer wall near the first end, and a sealing gasket is disposed on the stepped layer.
[0015] The beneficial effects of this utility model are that by opening a potting cavity on the inner shell and the insulator, and filling the potting cavity with epoxy resin to fix the inner shell, the insulator and the center pin, the problem of the center pin rotating relative to the inner shell during the insertion and removal interconnection of the RF connector is avoided, which would cause a short circuit between the cable core and the center pin. This ensures the stability of the signal transmission of the RF connector of this application. It has the characteristics of simple structure and stable center pin position, and is practical. Attached Figure Description
[0016] Figure 1 This is the front view of the present invention;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 This is a schematic diagram of the cable and its conductors.
[0019] In the figure: outer shell 1, accommodating space 11, inner shell 2, first end 21, second end 22, potting cavity 23, first cavity 24, second cavity 25, vent 26, limiting protrusion 27, center pin 3, slot 31, annular groove 32, insulator 4, retaining ring 5, sealing gasket 6, cable 7, wire core 71. Detailed Implementation
[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0021] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0023] like Figures 1 to 3 As shown, the radio frequency connector of this utility model includes: a housing 1, in which a through-hole accommodating space 11 is formed; an inner housing 2, having a first end 21 and a second end 22, the first end 21 extending into the housing 1 and the second end 22 not extending into the housing 1; a center pin 3, disposed in the inner housing 2 by means of an insulator 4; wherein, a potting cavity 23 is formed on the inner housing 2 and the insulator 4, which is through-hole and conductive along the radial direction of the inner housing 2, and the potting cavity 23 is filled with adhesive material to bond the center pin 3 to the insulator 4 and the inner housing 2.
[0024] See Figure 1 , Figure 2The outer shell 1 is a threaded sleeve with a through-hole accommodating space 11. The first end 21 and the portion near the first end 21 of the inner shell 2 extend into the outer shell 1 for connection. The second end 22 and the portion near the second end 22 of the inner shell 2 are located outside the outer shell 1. The center pin 3 is made of brass with a gold-plated outer surface. The center pin 3 is disposed inside the inner shell 2 by means of an insulator 4, which can be made of PTFE material. When the center pin 3 is fixed inside the inner shell 2 by means of the insulator 4, to prevent the center pin 3 from rotating relative to the insulator 4 and the inner shell 2, thus affecting the signal transmission of the connector. In this application, the portion of the inner shell 2 that does not enter the outer shell 1 is made conductive, and the insulator 4 is further perforated at the position corresponding to the opening on the inner shell 2 to expose the center pin 3, thereby forming a potting cavity 23 for adhesive material. Adhesive material is poured into the potting cavity 23 to bond the inner shell 2, the insulator 4, and the center pin 3 together. This avoids the problem of the center pin 3 rotating relative to the inner shell 2 during the insertion and removal interconnection process of the RF connector of this application, which would cause a short circuit between the wire core 71 of the cable 7 and the center pin 3. This ensures the stability of the signal transmission of the RF connector of this application. It has the characteristics of simple structure and stable position of the center pin 3, and is practical. It should be noted that the adhesive material can be epoxy resin or other possible materials.
[0025] In one or more embodiments, the inner housing 2 has a first cavity 24 and a second cavity 25 that pass through and communicate with the first end 21 and the second end 22, and the center needle 3 is disposed in the first cavity 24.
[0026] See Figure 2 The first cavity 24 is located inside the inner housing 2, relatively close to the first end 21, and the second cavity 25 is located inside the inner housing 2, relatively close to the second end 22. The inner diameter of the first cavity 24 is larger than the inner diameter of the second cavity 25. The first cavity 24 and the second cavity 25 are coaxially arranged. The first cavity 24 is used to install the insulator 4 and the center pin 3, and the second cavity 25 is used to install the cable 7. When the center pin 3 is installed in the first cavity 24 of the inner housing 2 with the help of the insulator 4, the central axis of the center pin 3 is coaxial with the central axis of the second cavity 25. After the cable 7 is inserted through the second cavity 25 of the inner housing 2, the core 71 of the cable 7 can be connected to the center pin 3.
[0027] In one or more embodiments, the center pin 3 has a slot 31 at the end near the second end 22 of the inner housing 2 for connection with the core 71 of the cable 7 inserted through the second cavity 25.
[0028] See Figure 2The inner diameter of the slot 31 is slightly larger than the outer diameter of the wire core 71 of the cable 7. When the wire core 71 of the cable 7 is inserted into the slot 31 of the pin through the second cavity 25 of the inner housing 2, the solder liquid is poured into the gap between the slot 31 and the wire core 71 of the cable 7, so that the wire core 71 of the cable 7 can be soldered to the pin. It has the characteristics of stable structure and high connection strength.
[0029] In one or more embodiments, the slot 31 has a gradually increasing cross-section along the direction toward the port of slot 31. See also Figure 2 The port of slot 31 is flared; this design ensures that the solder can smoothly enter the gap between slot 31 and the wire core 71 of cable 7, reducing the overflow of solder.
[0030] In one or more embodiments, the second cavity 25 has a gradually increasing cross-section along the direction toward the second end 22 of the inner housing 2; the inner housing 2 has an exhaust port 26 through the second cavity 25 on the surface near the second end 22.
[0031] See Figure 2 The second cavity 25 is flared at the opening of the second end 22 of the inner housing 2. This design facilitates the pouring of solder into the gap between the second cavity 25 and the cable 7, reducing the possibility of solder leakage. By soldering the cable 7 into the second cavity 25 of the inner housing 2, the problem of rotation of the cable 7 core 71 and the center pin 3 during connector insertion and removal is further reduced, thereby reducing the problem of short circuit between the cable 7 core 71 and the center pin 3. At the same time, an exhaust port 26 is opened through the surface near the second cavity 25 of the inner housing 2 to conduct through the second cavity 25, so that when the cable 7 is soldered into the second cavity 25 of the inner housing 2, the gas in the second cavity 25 can be expelled in time, improving the fixing effect of the cable 7 and ensuring the stability of the signal transmission of the connector of this application.
[0032] In one or more embodiments, a limiting protrusion 27 protruding toward the second end 22 is disposed on the inner wall of the first cavity 24 of the inner housing 2.
[0033] See Figure 2 The limiting protrusion 27 protruding from the first cavity 24 of the inner housing 2 can restrict the position of the insulator 4, reducing the possibility of the insulator 4 moving in the direction of its first end 21 in the inner housing 2, thereby further ensuring the stability of the position of the center pin 3 in the first cavity 24 of the inner housing 2, so that the position of the center pin 3 can remain relatively stable when the RF connector is plugged in or unplugged.
[0034] In one or more embodiments, when the center pin 3 is placed inside the inner housing 2, an annular groove 32 corresponding to the position of the potting cavity 23 is formed on the circumferential surface of the center pin 3.
[0035] See Figure 2 By opening an annular groove 32 on the surface of the center pin 3 corresponding to the potting cavity 23, the adhesive material in the potting cavity 23 can further contact the center pin 3, thereby ensuring the stability of the connection between the center pin 3 and the inner shell 2 and the insulator 4, and further avoiding the problem that the center pin 3 rotates relative to the inner shell 2 during the insertion and removal process of the RF connector of this application, which would cause a short circuit between the wire core 71 of the cable 7 and the center pin 3.
[0036] In one or more embodiments, the outer casing 1 is engaged within the receiving space 11 of the outer casing 1 by means of a retaining ring 5.
[0037] See Figure 2 The outer shell 1 has a first annular groove and a second annular groove respectively provided in the accommodating space 11 and on the outer wall of the inner shell 2. When the inner shell 2 is placed in the accommodating space 11 of the outer shell 1, the first annular groove corresponds to the second annular groove. The inner shell 2 can be snapped onto the outer shell 1 by using the retaining ring 5 located in the first annular groove and the second annular groove. It has the characteristics of simple structure and convenient installation.
[0038] In one or more embodiments, the inner housing 2 has a stepped layer formed on its outer wall near the first end 21, and a sealing gasket 6 is disposed on the stepped layer.
[0039] See Figure 2 The sealing gasket 6 is disposed on the stepped layer on the side surface away from the second end 22 of the inner housing 2; when the RF connector of this application is installed on an electronic product, the port of the electronic product will abut against the sealing gasket 6 to achieve a sealed connection with the RF connector of this application, ensuring the stability of the connection structure of this application.
[0040] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. A radio frequency connector, characterized in that, include: The outer shell has a through-type accommodating space inside; The inner shell has a first end and a second end, the first end extending into the outer shell and the second end not extending into the outer shell; The center needle is disposed within the inner housing by means of an insulator; The inner shell and the insulator are provided with a potting cavity that extends through the inner shell along its radial direction. The potting cavity is filled with adhesive material to bond the center pin to the insulator and the inner shell.
2. The radio frequency connector according to claim 1, characterized in that: The inner housing has a first cavity and a second cavity that pass through the first end and are connected to each other, and the central needle is disposed in the first cavity.
3. The radio frequency connector according to claim 2, characterized in that: The center pin has a slot at its end near the second end of the inner housing for connection with the cable core inserted through the second cavity.
4. The radio frequency connector according to claim 3, characterized in that: Along the direction toward the slot port, the slot has a gradually increasing cross-section.
5. The RF connector according to claim 2, characterized in that: Along the direction toward the second end of the inner housing, the second cavity has a gradually increasing cross-section.
6. The RF connector according to claim 2 or 5, characterized in that: The inner shell has an exhaust port that penetrates the second cavity on its surface near the second end.
7. The RF connector according to claim 2, characterized in that: The inner wall of the first cavity of the inner shell is provided with a limiting protrusion that protrudes toward the second end.
8. The RF connector according to claim 1, characterized in that: When the center needle is placed inside the inner housing, an annular groove corresponding to the position of the potting cavity is formed on the circumferential surface of the center needle.
9. The radio frequency connector according to claim 1, characterized in that: The outer shell is snapped into the receiving space of the outer shell by means of a retaining ring.
10. The radio frequency connector according to claim 1, characterized in that: The inner shell has a stepped layer formed on its outer wall near the first end, and a sealing gasket is disposed on the stepped layer.