N-to-MCX coaxial adapter
By adopting an integrated structure of the shell, insulator and central pin, and using the coordination of the limit cone, groove and limit steps, the problem of easy destruction of the N-to-MCX coaxial adapter structure is solved, and a high reliability and high coaxial adapter is achieved.
Patent Information
- Application Number
- CN202420465675.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-12
AI Technical Summary
When the existing N-to-MCX coaxial adapter is connected to different devices, the structure is easily damaged, resulting in a low service life and reliability.
The shell, insulator and central pin with an integrated structure are adopted to form a stable connection structure through the coordination of the limiting cone, groove and limiting steps, which simplifies the assembly process and improves the coaxiality.
It realizes an N-to-MCX coaxial adapter with simple structure, convenient installation, high coaxiality and high reliability, avoiding structural disconnection caused by external thrust.
Smart Images
Figure CN222691048U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of radio frequency coaxial devices, in particular to an N-to-MCX coaxial adapter. Background Art
[0002] Coaxial connectors are used to transmit radio frequency signals. Their transmission frequency range is very wide, up to 18GHz or higher. They are mainly used in radar, communication, data transmission and aerospace equipment. There are many types of connectors, such as N-type connectors, BNC connectors, SMA connectors, SMB connectors, SMC connectors, F-type connectors, RCA connectors and MCX connectors, etc. Different types of connectors are applicable to different scenarios and devices. For example, the N-type connector supports a signal frequency range of 0 to 11GHz, and has two characteristic impedances, 50Ω and 75Ω, which are larger in size. The MCX connector has the same internal contact and insulator size as the SMB connector, but is 30% smaller than the SMB. When connecting different devices (or devices and cables), the use of adapters is more critical due to the different types of connectors.
[0003] The N-to-MCX coaxial adapter is a relatively special type in the field of adapters. The reason is that the N-type connector can be said to be the largest connector, while the MCX connector is just the opposite, a smaller connector that is only larger than the MMCX type. The size difference between the two causes the N-to-MCX coaxial adapter to be subjected to greater force when connecting the N-type connector of other devices / cables, and the structure is easily damaged, which leads to a lower service life and reliability of the N-to-MCX coaxial adapter. Therefore, in actual use, the conversion between the N-type connector and the MCX connector is often achieved through the combination of adapters, such as N to TNC, and then to MCX.
[0004] The utility model patent specification of application number 2016207938084 describes the TNC connector in paragraph
[0016] as follows: "Features of the TNC connector: medium size". The specification in paragraph
[0017] describes the MCX connector as follows: "Features of the MCX connector: ultra-small coaxial connector with small size (about 30% smaller than SMB). The TNC / MCX adapter disclosed in the specification, such as Figure 1 As shown, it includes: a shell 3, a jack, an inner conductor 1 and an insulator 2. The jack is supported in the shell 3 by the insulator 2. The inner conductor 1 and the insulator 2 are fixed by glue. A sealing ring 7 is provided in the outer groove of the insulator 2. The insulator 2 and the shell 3 are fixedly connected by a nut 5.
[0005] from Figure 1It is not difficult to see that the TNC / MCX adapter disclosed in 2016207938084 adopts two independent parts to overlap in order to solve the problem of connecting between the medium-sized TNC connector and the ultra-small MCX connector. The larger part on the left is used to connect the TNC connector, and the smaller part on the right is used to connect the MCX connector. However, this structure is relatively complex and has relatively low coaxial accuracy.
[0006] The utility model patent with application number 2017206545773 discloses an adapter for measuring antenna, such as Figure 2 As shown, it comprises: a housing 1, a center conductor 2, and an insulator 3 disposed between the housing and the center conductor. A nut 10, an internal tooth washer 11, and a sealing ring 12 are installed outside the housing 1. A positioning step 4 is provided at the middle front end of the housing 1. The insulator 3 is a stepped structure with a large diameter at the rear end and a small diameter at the front end. The large diameter section of the insulator 3 is positioned by the positioning step and the small diameter section is extended into the TNC connector connection cavity 5. The rear of the positioning cavity forms an MCX connector connection cavity 7. A clamping ring 8 capable of clamping the rear end of the insulator is also installed in the MCX connector connection cavity 7. An annular groove is provided at the rear end of the insulator 3 and the rear part of the center conductor 2. An insulating pad 9 with an L-shaped cross section is placed in the annular groove.
[0007] from Figure 2 It can be seen that the TNC connector is smaller in size than the N-type connector, but larger in size than the MCX connector. The contact area between the insulator 3 and the center conductor 2 used in 2017206545773 is small, and it is easy for the insulator 3 and the center conductor 2 to become disconnected due to excessive force, thereby causing damage to the adapter. Therefore, the adapter for the measuring antenna disclosed in 2017206545773 has the problem of poor reliability.
[0008] It is not difficult to know from the adapter structures disclosed in the above two utility model patents that even the conversion between a medium-sized TNC connector and an ultra-small MCX connector still has the problem of poor reliability, not to mention the larger N-type connector. Therefore, it can be seen that providing an N-to-MCX coaxial adapter with a simple structure and high reliability has become a technical problem that needs to be solved urgently in the field of RF coaxial technology. Utility Model Content
[0009] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an N-to-MCX coaxial adapter with simple structure and high reliability.
[0010] The technical solution of this utility model is as follows:
[0011] An N-to-MCX coaxial adapter comprises: a shell, an insulator and a center pin which are sequentially arranged from the outside to the inside, wherein the shell, the insulator and the center pin are all of an integrated structure, a first limiting cone is arranged on the inner wall of the shell, and the bottom surface of the first limiting cone faces the MCX connection end; a second limiting cone is arranged on the outer edge of the center pin, and the bottom surface of the second limiting cone faces the N-type connection end; a first groove and a second groove which are respectively adapted to the first limiting cone and the second limiting cone are formed on the outer wall and the inner wall of the insulator; and the shell is further provided with a first limiting step for preventing the insulator from moving toward the MCX connection end.
[0012] The effect of the above scheme is that the integrated shell, insulator and center pin do not have the connectors required by the split structure, and the structure is simple and the reliability is high; moreover, the coaxiality of the integrated center pin is much higher than that of the combined double-pin structure, which is extremely important for coaxial radio frequency devices and is an important indicator to ensure signal transmission performance. In addition, when assembling the shell, insulator and center pin, the insulator is put on the outer edge of the center pin and pushed along the axis of the center pin, so that the inner wall of the insulator can gradually expand and move along the inclined surface of the second limiting cone until the second limiting cone is inserted into the second groove to complete the assembly of the insulator and the center pin. Similarly, the insulator can be inserted into the shell and pushed until the first limiting boss is inserted into the first groove to complete the assembly of the insulator and the shell. The whole process is simple, accurate and fast; and after the assembly is completed, the shell, insulator and center pin will rely on the first limiting cone, the second limiting cone, ... The cooperation of the groove and the second groove forms an extremely stable connection structure. Since the MCX connection end is connected to the MCX connector, and the MCX connector is relatively small in size, the thrust generated is not enough to shake the limiting position of the first limiting cone bottom on the insulator, nor is it enough to shake the limiting position of the second limiting cone bottom on the center pin; and the first limiting step can effectively prevent the large thrust generated by the N-type connector from causing the insulator to be disconnected from other structural parts when connected to the larger N-type connector; therefore, the utility model provides an N-to-MCX coaxial adapter with simple structure, convenient installation, high coaxiality and high reliability.
[0013] In a further preferred embodiment, the center pin includes: an N-type pin segment and an MCX pin segment, the diameter of the N-type pin segment is larger than that of the MCX pin segment, and one end face of the N-type pin segment facing the MCX pin segment abuts against the left end face of the insulator.
[0014] The effect of the above scheme is that: due to the characteristic that the volume of the N-type connector is much larger than that of the MCX connector, the center pin must form a stepped structure on the basis of the coaxial to adapt to this characteristic. The utility model uses this structure to make the left end face of the insulator abut against the end face of the N-type needle segment facing the MCX needle segment, so that when the N-to-MCX coaxial adapter is connected to the N-type connector and is subjected to thrust, the insulator forms an effective limit for the center pin, thereby ensuring the overall stability of the N-to-MCX coaxial adapter.
[0015] In a further preferred embodiment, a transition needle segment is further provided between the N-type needle segment and the MCX needle segment, and the insulator is provided with a second limiting step, which abuts against an end face of the transition needle segment facing the MCX needle segment.
[0016] The effect of the above scheme is that: due to the large difference in volume between the N-type connector and the MCX connector, the volume of the center pins used by the two is also very different. Based on this structural feature, the utility model adds a transition pin segment and adapts to set a second limiting step. On the one hand, the strength of the center pin itself is improved, avoiding the problem of insufficient strength and easy breakage caused by the sudden change of the center pin's diameter being too large. On the other hand, the second limiting step is used to further limit the position of the center pin, further improving the overall structural stability of the N to MCX coaxial adapter.
[0017] In a further preferred embodiment, the insulator comprises: a first insulating segment and a second insulating segment, wherein the outer diameter of the first insulating segment is larger than the outer diameter of the N-type needle segment and smaller than the outer diameter of the second insulating segment.
[0018] The effect of the above scheme is that: the outer diameter of the first insulating segment is greater than the outer diameter of the N-type needle segment, which means that the left end surface of the first insulating segment is sufficient to completely cover the right end surface of the N-type needle segment, thereby forming an effective support for the center pin; and on this basis, the outer diameter of the first insulating segment is smaller than the outer diameter of the second insulating segment, which means that the first insulating segment does not contact the inner wall of the shell, and an annular groove is formed between the two. On the one hand, the signal transmission performance of the entire insulator is improved, and excessive signals are prevented from being absorbed by the insulator; on the other hand, the contact area and friction between the insulator and the inner wall of the shell are reduced, thereby reducing the difficulty of assembly.
[0019] In a further preferred embodiment, the distance between the second limiting step and the right end surface of the second insulating segment is greater than the length of the first insulating segment.
[0020] The effect of the above scheme is that the setting of the second limiting step improves the signal transmission performance of the insulator, but the thickness and strength of the right half of the second insulating segment become smaller, and the distance between the second limiting step and the right end face of the second insulating segment is set to be greater than the length of the first insulating segment, which compensates for the strength loss of the second half of the second insulating segment.
[0021] In a further preferred embodiment, a limiting groove is provided on the inner wall of the MCX connection end of the housing, and the limiting groove is used to fit the limiting flange of the MCX connector.
[0022] The effect of the above scheme is that the setting of the limit groove improves the connection stability between the N-to-MCX coaxial adapter and the MCX connector. The end of the MCX connector can adopt a petal-shaped structure that can be expanded outward and contracted inward. When the MCX connector is just inserted into the MCX connection end of the shell of the N-to-MCX coaxial adapter, the end is in a contracted state. If the limit groove is not set, the MCX connector will have the problem of being easy to fall off after being stressed. Therefore, the setting of the limit groove allows the end of the MCX connector to expand outward after entering the limit groove, thereby making the connection stability between the N-to-MCX coaxial adapter and the MCX connector higher.
[0023] In a further preferred embodiment, the insulator further comprises a third insulating segment, the third insulating segment is sleeved on the outer edge of the MCX needle segment, and the right end surface of the third insulating segment is flush with the left end surface of the limiting groove.
[0024] The effect of the above solution is that the third insulating section is sleeved on the outer edge of the MCX needle section, covering at least a part of the outer edge of the MCX needle section, thereby improving the strength of the part and avoiding the problem of easy breakage due to the small diameter of the MCX needle section. Moreover, the right end face of the third insulating section is flush with the left end face of the limiting groove, which means that the third insulating section will not affect the end extension of the MCX connector after insertion.
[0025] In a further preferred embodiment, the insulator further comprises a fourth insulating segment, and a right end surface of the fourth insulating segment is flush with a right end surface of the MCX needle segment.
[0026] The effect of the above scheme is that the right end face of the fourth insulating segment is flush with the right end face of the MCX needle segment, which means that the MCX needle segment is completely covered by the third insulating segment and the fourth insulating segment, further improving the strength of the MCX needle segment. Since the insulator and the center pin are both integrated structures, the N-to-MCX coaxial adapter provided by the utility model uses the insulator to fully cover the MCX needle segment with a relatively fragile center pin on the basis of the insulator and the center pin adopting an integrated structure, thereby improving the reliability and service life.
[0027] In a further preferred embodiment, the MCX connector is arranged on a circuit board, a protective shell is arranged outside the circuit board, and the N-to-MCX coaxial adapter is used to penetrate the protective shell and then be connected to the MCX connector; a support plate extends outward from the outer edge of the shell, and the support plate is used to be detachably connected to the protective shell.
[0028] The effect of the above scheme is that for the N-to-MCX coaxial adapter connecting the cable with the MCX connector, there is no need for a support plate and there will be no problem of easy damage. However, if the MCX connector is set on the circuit board, the N-to-MCX coaxial adapter connected to the MCX connector will have the problem of "top-heavy". On this basis, if the N-type connection end is connected to the N-type connector, the problem will be further aggravated. In this case, the setting of the support plate can effectively ensure the setting stability of the N-to-MCX coaxial adapter, thereby ensuring the connection reliability of the entire connection system (circuit board, protective shell, MCX connector, N-to-MCX coaxial adapter and N-type connector).
[0029] In a further preferred embodiment, a sealing groove is formed at one end of the support plate facing the MCX connector, a sealing ring is disposed in the sealing groove, and the sealing ring protrudes from the end surface of the support plate.
[0030] The effect of the above solution is that the provision of the sealing ring can effectively protect the inner connection structure and prevent impurities from entering the interior of the protective shell from the connection between the N-to-MCX coaxial adapter and the MCX connector.
[0031] Compared with the prior art, the N-to-MCX coaxial adapter provided by the utility model comprises: a shell, an insulator and a center pin which are sequentially arranged from the outside to the inside, the shell, the insulator and the center pin all adopt an integrated structure, a first limiting cone is arranged on the inner wall of the shell, and the bottom surface of the first limiting cone faces the MCX connection end; a second limiting cone is arranged on the outer edge of the center pin, and the bottom surface of the second limiting cone faces the N-type connection end; a first groove and a second groove which are respectively adapted to the first limiting cone and the second limiting cone are opened on the outer wall and the inner wall of the insulator. The integrated housing, insulator and center pin used in the N-to-MCX coaxial adapter provided by the utility model form a simple and reliable structure, without the need for additional connectors. The coaxiality of the center pin is much higher than that of the split double pin, which is crucial for coaxial radio frequency devices. The assembly process is simple and fast, and only requires the insulator to be put on the outer edge of the center pin and pushed along the axis to complete the process. After the assembly is completed, a stable connection is formed by the cooperation of the boss and the groove, which is not easily affected by external thrust, has a simple structure, is easy to install, has high coaxiality and is reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a schematic diagram of the structure of the TNC / MCX adapter disclosed in 2016207938084.
[0033] Figure 2 It is a schematic diagram of the structure of the adapter for measuring antenna disclosed in 2017206545773.
[0034] Figure 3It is a cross-sectional view of an N-to-MCX coaxial adapter in a preferred embodiment of the utility model.
[0035] Figure 4 yes Figure 3 Enlarged view of part A in the figure.
[0036] Figure 5 yes Figure 3 Enlarged view of part B in the middle.
[0037] Figure 6 It is a structural schematic diagram of the medium body disclosed in 2020106180304.
[0038] Figure 7 It is a top view of an N-to-MCX coaxial adapter in a preferred embodiment of the utility model.
[0039] Figure 8 It is a cross-sectional view of an insulator used in the N-to-MCX coaxial adapter of the utility model. DETAILED DESCRIPTION
[0040] The utility model provides an N-to-MCX coaxial adapter. To make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples.
[0041] The utility model provides an N to MCX coaxial adapter, such as Figure 3 As shown, it includes: a shell 100, an insulator 200 and a center pin 300 which are arranged in sequence from the outside to the inside, and the shell 100, the insulator 200 and the center pin 300 all adopt an integrated structure. It should be noted that in the prior art, most of the insulator 200 and the center pin 300 in the adapter, connector and other devices adopt an integrated structure, and there are almost no devices that both adopt an integrated structure. For example, the center conductor 2 in the measuring antenna adapter disclosed in 2017206545773 is an integrated structure, but the insulator 3 is a split structure. The common structures of traditional RF coaxial devices are either 300 split center pins or 200 split insulators. The former is difficult to weld and the coaxiality of the two split pins is difficult to ensure. The latter has the problem of insufficient connection stability of the two insulators, resulting in unstable signal transmission. In order to solve this problem, the invention patent application with application number 2020106180304 discloses a dielectric body, a RF coaxial device and a method for assembling a RF coaxial device, wherein the structure of the dielectric body is as follows: Figure 6As shown, a fan-shaped mounting groove is provided on one side so that the integrated center pin 300 can be assembled from the side along the mounting groove to ensure that the insulator 200 and the center pin 300 can both adopt an integrated structure. However, in actual application, such a fan-shaped mounting groove is prone to cause the center pin 300 to be dislodged and damaged when subjected to a large force. Therefore, in the utility model, the housing 100, the insulator 200 and the center pin 300 all adopt an integrated structure, which is also a great improvement over the prior art and is clearly different from the existing RF coaxial devices.
[0042] In order to realize that the housing 100, the insulator 200 and the center pin 300 are all of an integrated structure, the utility model is provided with a first limiting cone 110 on the inner wall of the housing 100, such as Figure 4 As shown, the bottom surface of the first limiting cone 110 faces the MCX connection end; the outer edge of the center pin 300 is provided with a second limiting cone 340, as shown in FIG. Figure 5 As shown, the bottom surface of the second limiting cone 340 faces the N-type connection end; the outer wall and the inner wall of the insulator 200 are provided with a first groove and a second groove respectively adapted to the first limiting cone 110 and the second limiting cone 340.
[0043] The integrated housing 100, insulator 200 and center pin 300 do not have the connectors required by the split structure, and have a simple structure and high reliability. Moreover, the coaxiality of the integrated center pin 300 is much higher than that of the combined double-pin structure, which is extremely important for coaxial radio frequency devices and is an important indicator for ensuring signal transmission performance. In addition, when assembling the housing 100, insulator 200 and center pin 300, the insulator 200 is put on the outer edge of the center pin 300 and pushed along the axis of the center pin 300, so that the inner wall of the insulator 200 can gradually expand and move along the inclined surface of the second limiting cone 340 until the second limiting cone 340 is inserted into the second groove to complete the assembly of the insulator 200 and the center pin 300. Similarly, the insulator 200 can be inserted into the housing 100 and pushed until the first limiting boss is inserted into the first groove to complete the assembly of the insulator 200 and the housing. The whole process of assembling the housing 100 is simple, accurate and fast. Moreover, after the assembly is completed, the housing 100, the insulator 200 and the center pin 300 will form a very stable connection structure by relying on the cooperation of the first limiting cone 110, the second limiting cone 340, the first groove and the second groove. Since the MCX connection end is connected to the MCX connector, which is small in size, the thrust generated is not enough to shake the limiting of the insulator 200 by the cone bottom of the first limiting cone 110, and is not enough to shake the limiting of the center pin 300 by the cone bottom of the second limiting cone 340.
[0044] The housing 100 is also provided with a first limiting step (not shown) for preventing the insulator 200 from moving toward the MCX connection end. The first limiting step can effectively prevent the insulator 200 from being disconnected from other structural parts due to the large thrust generated by the N-type connector when connected to a larger N-type connector. In summary, the utility model provides an N-to-MCX coaxial adapter with a simple structure, convenient installation, high coaxiality and high reliability.
[0045] In a further preferred embodiment of the present invention, the center pin 300 is divided into at least two parts: an N-type pin segment 310 and an MCX pin segment 330. Figure 3 As shown, the diameter of the N-type needle segment 310 is larger than that of the MCX needle segment 330. This arrangement makes the center pin 300 present a stepped structure to adapt to the size difference between the N-type connector and the MCX connector; and the end face of the N-type needle segment 310 facing the MCX needle segment 330 is tightly abutted against the left end face of the insulator 200. This arrangement fully utilizes the larger volume of the N-type connector and ensures compatibility with the MCX connector. In actual applications, when the N-type connector is subjected to thrust, the insulator 200 plays an important role. It not only forms an effective limit for the center pin 300, but also provides additional stability through the connection with the N-type needle segment 310. In this way, even if the external environment changes slightly, the adapter can maintain a good connection state to ensure the stability and reliability of signal transmission.
[0046] Furthermore, the present invention adds a transition needle segment 320 between the N-type needle segment 310 and the MCX needle segment 330. Figure 3 As shown, a second limiting step is provided on the insulator 200, and the second limiting step is connected to the end face of one end of the transition pin segment 320. Due to the large difference in volume between the N-type connector and the MCX connector, the volume of the center pins used by them is also greatly different. Based on this feature, the utility model introduces the transition pin segment 320 and is equipped with a second limiting step to solve two main problems. First, the design improves the overall strength of the center pin 300. By adding the transition pin segment 320, the problems of insufficient strength and easy breakage caused by the sudden change in the diameter of the center pin 300 can be effectively avoided. Secondly, the second limiting step further limits the position of the center pin 300 and enhances the stability of the connector. By cooperating with the transition pin segment 320, the second limiting step provides additional position restrictions, thereby ensuring the overall structural stability of the N-to-MCX coaxial adapter.
[0047] Preferably, the insulator 200 includes at least two parts: a first insulating section 210 and a second insulating section 220. Figure 8As shown, the outer diameter of the first insulating segment 210 is slightly larger than the outer diameter of the N-type needle segment 310, but slightly smaller than the outer diameter of the second insulating segment 220. This arrangement enables the left end of the first insulating segment 210 to completely cover the right end face of the N-type needle segment 310, providing effective support and protection, and ensuring the stability and reliability of the connection. On the other hand, the outer diameter of the first insulating segment 210 is smaller than the outer diameter of the second insulating segment 220, resulting in an annular groove formed between the insulator 200 and the housing 100, and this groove is not only conducive to improving the signal transmission performance of the entire insulator 200, reducing the possibility of the signal being absorbed by the insulator 200, but also reducing the contact area and friction between the insulator 200 and the housing 100; this arrangement can not only ensure the reliability of signal transmission, but also reduce the friction and resistance during assembly, making the assembly smoother and faster.
[0048] Preferably, the distance between the second limiting step and the right end face of the second insulating segment 220 is set to be larger than the length of the first insulating segment 210; this setting mainly has the following two purposes: first, the setting of the second limiting step helps to improve the signal transmission performance of the insulator 200. This structure makes the connection between the insulator 200 and the center pin 300 more stable, which is conducive to maintaining the stability and reliability of signal transmission. Secondly, although the setting of the second limiting step will cause the thickness of the right end face of the second insulating segment 220 to become smaller, which may reduce its strength, setting the distance between the second limiting step and the right end face of the second insulating segment 220 to be larger than the length of the first insulating segment 210 makes up for the strength loss of the second half of the second insulating segment 220. In this way, even if the structure of the second insulating segment 220 changes, it can still maintain sufficient strength, thereby ensuring the stability and reliability of the entire device.
[0049] Specifically, a limiting groove 140 is provided on the inner wall of the MCX connection end of the housing 100. Figure 3 As shown, the limiting groove 140 is used to adapt to the limiting flange of the MCX connector. The setting of the limiting groove 140 improves the connection stability between the N-to-MCX coaxial adapter and the MCX connector. The end of the MCX connector can adopt a petal-shaped structure that can expand outwards and shrink inwards. When the MCX connector is just inserted into the MCX connection end of the housing 100 of the N-to-MCX coaxial adapter, the end is in a shrinking state. In the case where the limiting groove 140 is not provided, the MCX connector will have the problem of being easy to fall off after being stressed. Therefore, the setting of the limiting groove 140 allows the end of the MCX connector to expand outwards after entering the limiting groove 140, thereby making the connection stability between the N-to-MCX coaxial adapter and the MCX connector higher.
[0050] Furthermore, the insulator 200 further includes a third insulating segment 230, such as Figure 8As shown, the third insulating section 230 is sleeved on the outer edge of the MCX needle section 330, and the right end surface of the third insulating section 230 is flush with the left end surface of the limiting groove. The third insulating section 230 is sleeved on the outer edge of the MCX needle section 330, wrapping at least a portion of the outer edge of the MCX needle section 330, thereby improving the strength of the portion and avoiding the problem of easy breakage due to the small diameter of the MCX needle section 330. Moreover, the right end surface of the third insulating section 230 is flush with the left end surface of the limiting groove, which means that the third insulating section 230 will not affect the end extension of the MCX connector after insertion.
[0051] Preferably, the insulator 200 further includes a fourth insulating segment 240, such as Figure 8 As shown, the right end face of the fourth insulating segment 240 is flush with the right end face of the MCX needle segment 330. The right end face of the fourth insulating segment 240 is flush with the right end face of the MCX needle segment 330, which means that the MCX needle segment 330 is completely covered by the third insulating segment 230 and the fourth insulating segment 240, further improving the strength of the MCX needle segment 330. Since the insulator 200 and the center pin 300 are both integrated structures, the N-to-MCX coaxial adapter provided by the utility model uses the insulator 200 to fully cover the relatively fragile MCX needle segment 330 of the center pin 300 on the basis of the insulator 200 and the center pin 300 both adopting an integrated structure, thereby improving the reliability and service life.
[0052] According to another aspect of the present invention, the MCX connector is arranged on a circuit board, a protective shell is arranged outside the circuit board, and the N-to-MCX coaxial adapter is used to penetrate the protective shell and then connect to the MCX connector; a support plate 150 is extended outward from the outer edge of the housing 100, and the support plate 150 is used to be detachably connected to the protective shell. For the N-to-MCX coaxial adapter that connects the cable with the MCX connector, there is no need for the support plate 150 and there is no problem of easy damage. However, if the MCX connector is arranged on the circuit board, the N-to-MCX coaxial adapter connected to the MCX connector will have the problem of "top-heavy". On this basis, if the N-type connection end is connected to the N-type connector, the problem will be further aggravated. In this case, the setting of the support plate 150 can effectively ensure the setting stability of the N-to-MCX coaxial adapter, and then ensure the connection reliability of the entire connection system (circuit board, protective shell, MCX connector, N-to-MCX coaxial adapter and N-type connector).
[0053] In a specific implementation, a sealing groove (not shown) is provided at one end of the support plate 150 facing the MCX connector, and a sealing ring 400 is provided in the sealing groove, and the sealing ring 400 protrudes from the end surface of the support plate 150. The provision of the sealing ring 400 can effectively protect the inner connection structure and prevent impurities from entering the protective shell from the connection between the N-to-MCX coaxial adapter and the MCX connector.
[0054] In addition, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and to form different embodiments; for example, any one of the claimed embodiments may be used in any combination.
[0055] It should be noted that the above embodiments illustrate the utility model rather than limit the utility model, and those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation on the claims. The word "comprising" does not exclude the existence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the existence of multiple such elements. The utility model can be implemented by means of hardware including several different elements and by means of appropriately programmed computers. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names. The steps in the above embodiments should not be understood as limitations on the order of execution unless otherwise specified.
Claims
1. An N to MCX coaxial adapter, comprising: The shell, insulator and center pin are arranged in sequence from outside to inside, characterized in that the shell, insulator and center pin all adopt an integrated structure, the inner wall of the shell is provided with a first limiting cone, the bottom surface of the first limiting cone faces the MCX connection end; the outer edge of the center pin is provided with a second limiting cone, the bottom surface of the second limiting cone faces the N-type connection end; the outer wall and the inner wall of the insulator are provided with a first groove and a second groove respectively adapted to the first limiting cone and the second limiting cone; the shell is also provided with a first limiting step for preventing the insulator from moving toward the MCX connection end.
2. The N to MCX coaxial adapter according to claim 1, characterized in that: The center pin includes: an N-type pin segment and an MCX pin segment. The diameter of the N-type pin segment is larger than that of the MCX pin segment. One end face of the N-type pin segment facing the MCX pin segment abuts against the left end face of the insulator.
3. The N to MCX coaxial adapter according to claim 2, characterized in that: A transition needle segment is further provided between the N-type needle segment and the MCX needle segment, and the insulator is provided with a second limiting step, which abuts against an end surface of the transition needle segment facing the MCX needle segment.
4. The N to MCX coaxial adapter according to claim 3, characterized in that: The insulator comprises: a first insulating section and a second insulating section, wherein an outer diameter of the first insulating section is larger than an outer diameter of the N-type needle section and smaller than an outer diameter of the second insulating section.
5. The N to MCX coaxial adapter according to claim 4, characterized in that: The distance between the second limiting step and the right end surface of the second insulating segment is greater than the length of the first insulating segment.
6. The N to MCX coaxial adapter according to claim 4, characterized in that: The inner wall of the MCX connection end of the shell is provided with a limiting groove, and the limiting groove is used to adapt to the limiting flange of the MCX connector. The insulator also includes a third insulating section, and the third insulating section is sleeved on the outer edge of the MCX needle section, and the right end surface of the third insulating section is flush with the left end surface of the limiting groove.
7. The N to MCX coaxial adapter according to claim 6, characterized in that: The insulator further comprises a fourth insulating segment, and a right end surface of the fourth insulating segment is flush with a right end surface of the MCX needle segment.
8. The N to MCX coaxial adapter according to any one of claims 1 to 7, characterized in that: The MCX connector is arranged on a circuit board, a protective shell is arranged outside the circuit board, and the N-to-MCX coaxial adapter is used to penetrate the protective shell and then be connected to the MCX connector; a support plate extends outwardly from the outer edge of the shell, and the support plate is used to be detachably connected to the protective shell.
9. The N to MCX coaxial adapter according to claim 8, characterized in that: A sealing groove is formed at one end of the support plate facing the MCX connector. A sealing ring is arranged in the sealing groove and protrudes from the end surface of the support plate.