Coaxial connector

Abstract

The utility model discloses a coaxial connector, and relates to the technical field of coaxial connector structures, the coaxial connector comprises a main body, the main body comprises a central conductor, an insulator sleeved on the periphery of the central conductor, and an external conductor sleeved on the periphery of the insulator, the central conductor and the external conductor are arranged in a manner of exceeding the first end of the insulator in the axial direction, the parts, exceeding the first end of the insulator, of the central conductor and the external conductor form a first connecting part, and the part, exceeding the first end of the insulator, of the external conductor is enclosed to form an accommodating area; the accommodating area is used for accommodating a connecting end of an IPEX terminal, and the external conductor and the central conductor are used for being electrically connected with the IPEX terminal. The utility model aims to provide the coaxial connector which is convenient for testing the electrical performance of the wire end connector.

Description

TECHNICAL FIELD

[0001] The utility model relates to coaxial connector structure technical field, especially a kind of coaxial connector. BACKGROUND

[0002] The S parameter test of the line end connector is an important means to evaluate its electrical performance. S parameter, i.e. scattering parameter, helps engineers understand and optimize the performance of the connector by describing the reflection and transmission characteristics of radio frequency signals at the device port. S parameter test not only concerns the quality and reliability of the product, but also directly affects the stability and communication quality of the system.

[0003] IPEX connector, also known as MHF connector (Micro Coaxial Connectors), is a kind of miniature coaxial connector. The current way to test its line end connector includes testing by connecting the IPEX line end to a network analyzer using a coaxial connector, but the coaxial connectors on the market are designed for stable connection and do not consider the frequent plugging situation in testing projects. The IPEX line end connector needs to be accurately aligned with the connection end of the coaxial connector and needs to be forcibly inserted into the coaxial connector to complete the connection, which greatly affects the testing efficiency, especially for small-sized line end connectors like IPEX-4. Therefore, there is an urgent need for a test coaxial connector that is easy to connect to optimize the above problems. SUMMARY

[0004] The main purpose of the utility model is to provide a coaxial connector that facilitates electrical performance testing of line end connectors.

[0005] To achieve the above purpose, the utility model provides a coaxial connector, wherein the coaxial connector comprises:

[0006] A main body comprising a center conductor, an insulator sleeved around the center conductor, and an outer conductor sleeved around the insulator. The center conductor and the outer conductor both extend axially beyond the first end of the insulator, and the part of the center conductor and the outer conductor that extends beyond the first end of the insulator forms a first connection part. The part of the outer conductor that extends beyond the first end of the insulator encloses a receiving area, which is used to accommodate the connection end of an IPEX terminal, and the outer conductor and the center conductor are used to electrically connect with the IPEX terminal.

[0007] In an embodiment, the inner edge of the part of the outer conductor that extends beyond the first end of the insulator is chamfered to form a first guide part.

[0008] In an embodiment, an end of the center conductor beyond the first end of the insulator is chamfered to form a second guide portion.

[0009] In an embodiment, a portion of the outer conductor beyond the first end of the insulator is provided with a notch for accommodating a cable of an IPEX terminal.

[0010] In an embodiment, the center conductor is provided beyond the second end of the insulator in an axial direction, and a portion of the center conductor beyond the second end of the insulator forms a second connecting portion with an outer edge of the outer conductor.

[0011] In an embodiment, the coaxial connector further comprises a housing rotatably sleeved on the periphery of the main body, the housing is provided corresponding to the second connecting portion, and a portion of the housing close to the second end is spaced apart from the outer conductor to form an accommodation gap, and an inner side of the housing is provided with an internal thread for screwing with an SMA terminal, and the outer conductor and the center conductor are electrically connected with the SMA terminal.

[0012] In an embodiment, the outer conductor comprises a fixed segment at a middle portion and a connecting segment close to the second end of the fixed segment, the housing is rotatably installed on the fixed segment, an outer diameter of the connecting segment is smaller than an outer diameter of the fixed segment to form a stepped portion at an interface therebetween, and an elastic gasket is arranged at the stepped portion.

[0013] In an embodiment, an inner side of the housing is provided with a first annular groove, and an outer periphery of the fixed segment is provided with a second annular groove corresponding thereto, and a snap ring is arranged between the housing and the fixed segment, and inner and outer sides of the snap ring respectively extend into the first annular groove and the second annular groove.

[0014] In an embodiment, an inner side of the outer conductor is provided with a first limiting protrusion, and an outer periphery of the insulator is provided with a first limiting groove corresponding thereto, and the first limiting protrusion extends into the first limiting groove.

[0015] In an embodiment, an outer periphery of the center conductor is provided with a second limiting protrusion, and an inner side of the insulator is provided with a second limiting groove corresponding thereto, and the second limiting protrusion extends into the second limiting groove.

[0016] The utility model discloses a technical scheme, compared with the coaxial connector in the prior art, the external conductor needs to be inserted in the structure of IPEX terminal inside, the external conductor in the application is external, that is, the external conductor forms the accommodation area, the accommodation area is used to accommodate the connecting end of IPEX terminal, without the external conductor is positioned and inserted in the connecting end of IPEX terminal to carry out stable connection, only needs to contact the external conductor on the IPEX terminal periphery and the external side of IPEX terminal and can be contacted, and need not be clamped tightly, in this way, on one hand, the external conductor need not be accurately positioned with the external side of IPEX terminal, on the other hand, the external side of IPEX terminal and the external conductor can be contacted, and need not be clamped tightly, thereby optimizing the IPEX line end connector and the connecting end of coaxial connector accurate positioning and need to be inserted in the coaxial connector to complete the connection problem, meet the test demand, improve test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in the drawings without creating labor.

[0018] Figure 1 The utility model provides a three-dimensional structure schematic diagram of one embodiment of coaxial connector;

[0019] Figure 2 For Figure 1 The cross section schematic diagram of coaxial connector in the middle.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 100, coaxial connector;1, main body;1a, first connecting part;1b, second connecting part;11, center conductor;111, second guide part;112, second limiting convex part;12, insulator;12a, first end;12b, second end;121, first limiting recess;122, second limiting recess;13, external conductor;131, first guide part;132, notch;133, fixed segment;133a, second annular groove;134, connecting segment;135, step part;136, first limiting convex part;2, accommodation area;3, shell;31, internal thread;32, first annular groove;4, accommodation gap;5, elastic washer;6, snap ring.

[0022] The realization, functional characteristics and advantages of the utility model will be further explained with reference to the drawings. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0024] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0025] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0026] S-parameter testing of a wire end connector is an important means to evaluate its electrical performance. S-parameter, also known as scattering parameter, describes the reflection and transmission characteristics of RF signals at the device port, helping engineers understand and optimize the performance of the connector. S-parameter testing not only concerns the quality and reliability of the product, but also directly affects the stability and communication quality of the system.

[0027] The IPEX connector, also known as MHF connector (Micro Coaxial Connector), is a micro coaxial connector. Currently, the way to test the terminal connector of the IPEX connector includes testing by connecting the terminal connector of the IPEX connector to a network analyzer through a coaxial connector. However, the coaxial connector on the market is designed for stable connection and does not consider the frequent plugging in the test project. The terminal connector of the IPEX connector needs to be accurately aligned with the connecting end of the coaxial connector and forcibly inserted into the coaxial connector to complete the connection, which greatly affects the test efficiency, especially for the IPEX-4 terminal connector with small size. Therefore, a coaxial connector for testing is needed to facilitate the connection and optimize the above problems.

[0028] In view of this, the utility model provides a coaxial connector, please refer to Figures 1 to 2 For the embodiments of the coaxial connector provided in the present application, the coaxial connector will be described in detail below in combination with specific drawings.

[0029] Please refer to Figures 1 to 2 The coaxial connector 100 includes a main body 1, the main body 1 includes a center conductor 11, an insulator 12 sleeved on the periphery of the center conductor 11 and an outer conductor 13 sleeved on the periphery of the insulator 12, the center conductor 11 and the outer conductor 13 both are arranged to axially beyond the first end 12a of the insulator 12, and the part of the center conductor 11 and the outer conductor 13 beyond the first end 12a of the insulator 12 forms a first connecting part 1a, and the part of the outer conductor 13 beyond the first end 12a of the insulator 12 is enclosed to form a containing area 2, the containing area 2 is used to contain the connecting end of the IPEX terminal, and the outer conductor 13 and the center conductor 11 are used to be electrically connected with the IPEX terminal.

[0030] Compared with the coaxial connector 100, the external conductor 13 needs to be inserted into the structure of the IPEX terminal inside, in the application, the external conductor 13 is external, that is, the external conductor 13 forms the accommodation area 2, the accommodation area 2 is used to accommodate the connecting end of the IPEX terminal, without positioning the external conductor 13 and inserting it into the connecting end of the IPEX terminal for stable connection, only need to contact the external conductor 13 on the IPEX terminal and the external conductor 13 on the IPEX terminal, in this way, on the one hand, the external conductor 13 does not need to be accurately positioned with the external conductor 13 on the IPEX terminal, on the other hand, the external conductor 13 on the IPEX terminal can be contacted and connected with the external conductor 13, without clamping, thereby optimizing the problem that the IPEX line end connector needs to be accurately positioned with the connecting end of the coaxial connector 100 and needs to be inserted into the coaxial connector 100 to complete the connection, meeting the test requirements and improving the test efficiency.

[0031] Specifically, the inner edge of the part of the external conductor 13 beyond the first end 12a of the insulator 12 is chamfered to form a first guide part 131. The accommodation area 2 formed by the external conductor 13 to accommodate the IPEX terminal has been described above, and the contact and connection position of the external conductor 13 and the IPEX terminal can not be limited, for example, the external conductor 13 is provided with an extension part extending into the accommodation area 2, when the IPEX terminal is placed in the accommodation area 2, the end part thereof can contact the above-mentioned extension part to realize connection, at this time, the size of the accommodation area 2 can be greater than the size of the IPEX terminal, so as to not need to accurately position the connection of the external conductor 13 and the IPEX terminal, and also not need to force the clamping to complete the connection, meeting the functional requirements of the application, but such setting still needs to accurately position the central connection part of the center conductor 11 and the IPEX terminal, therefore, the size of the accommodation area 2 is set to be comparable to the size of the IPEX terminal, and the inner edge of the external conductor 13 is chamfered to form the first guide part 131, so that when the IPEX terminal is connected close to the first connecting part 1a, only needs to be roughly positioned, and the IPEX terminal is guided by the first guide part 131 to be accurately positioned, so that the center conductor 11 and the central connection part of the IPEX terminal can be accurately connected, without manual positioning, meeting the quick connection requirements of the test, and in this structure, the external conductor 13 can contact and connect with the outer edge of the external connection part of the IPEX terminal, without setting additional connection structure, simple structure and convenient operation.

[0032] In addition, the end of the center conductor 11 beyond the first end 12a of the insulator 12 is chamfered to form a second guide part 111. The end of the center conductor 11 is also chamfered to form the second guide part 111, which also serves as a guide and alignment function, and facilitates the alignment and connection of the center conductor 11 and the center conductor of the IPEX terminal.

[0033] In addition, the outer conductor 13 is provided with a notch 132 beyond the first end 12a of the insulator 12, which is used to accommodate the cable of the IPEX terminal. The IPEX terminal is small in size, and the connection end is arranged nearly perpendicular to the extension direction of the cable. In order to avoid the interference of the cable with the first connection part 1a and affect the connection of the two, the notch 132 is provided on the outer conductor 13 to avoid the cable of the IPEX terminal through the notch 132, which also serves as a positioning function to limit the rotation of the IPEX terminal after being connected with the first connection part 1a, and ensure the stability of the connection.

[0034] In addition, the center conductor 11 is provided beyond the second end 12b of the insulator 12 in the axial direction, and the part of the center conductor 11 beyond the second end 12b of the insulator 12 forms a second connection part 1b with the outer edge of the outer conductor 13. The coaxial connector 100 can be directly connected with the test equipment through the cable, but generally, a connector is provided on the test equipment, which is not necessarily a corresponding connector. In order to make it universal, an adapter is generally used for conversion. The other end of the coaxial connector 100 is provided as the second connection part 1b to form a separate adapter for converting the test equipment and the IPEX terminal. It should be noted that the terminal connected by the second connection part 1b can not be limited, and the terminal used on the test equipment is mainly used, which can connect the IPEX terminal and the test equipment for testing.

[0035] Specifically, the coaxial connector 100 further comprises a shell 3 rotatably sleeved on the periphery of the main body 1, the shell 3 is arranged corresponding to the second connecting portion 1b, and the shell 3 is arranged in space with the part of the outer conductor 13 close to the second end 12b to form a containing gap 4, and the inner side of the shell 3 is provided with an internal thread 31 for screwing with the SMA terminal, and the outer conductor 13 and the center conductor 11 are electrically connected with the SMA terminal. The connecting terminal connected corresponding to the second connecting portion 1b can not be limited and has been described above, and the application mainly proposes the connecting structure corresponding to the SMA terminal. Specifically, the shell 3 is sleeved on the periphery of the main body 1, the internal thread 31 is arranged on the inner side of the shell 3 for screwing with the SMA terminal, and the center conductor 11 of the SMA terminal is connected with the IPEX terminal, and the outer side of the SMA terminal is connected with the outer conductor 13. In this way, the stable connection between the second connecting portion 1b and the SMA terminal is realized, and the functional requirements are met.

[0036] Further, the outer conductor 13 comprises a fixed segment 133 located in the middle and a connecting segment 134 located close to the second end 12b of the fixed segment 133, the shell 3 is rotatably installed on the fixed segment 133, the outer diameter of the connecting segment 134 is smaller than that of the fixed segment 133 to form a step portion 135 at the interface therebetween, and the step portion 135 is provided with an elastic gasket 5. The outer conductor 13 is arranged in multiple segments to at least form the fixed segment 133 and the connecting segment 134, the shell 3 is rotatably installed on the fixed segment 133, and the size of the connecting segment 134 is smaller than that of the fixed segment 133, so that there is a gap between the connecting segment 134 and the shell 3 to form the containing gap 4 for the outer side of the SMA terminal to extend into. When the shell 3 is screwed with the SMA terminal, the shell 3 is fixed axially relative to the fixed segment 133, and the SMA terminal is pulled into the containing gap 4 along the axial direction during the screwing process. In order to reduce the size of the coaxial connector 100 as much as possible under the premise of ensuring stable connection, the outer side of the SMA terminal may abut against the step portion 135. In order to avoid damage to the outer side of the SMA terminal and the step portion 135, the application further provides the elastic gasket 5 at the step portion 135. In this way, the elastic gasket 5 can also seal the SMA terminal when the SMA terminal abuts against it, which can avoid dirt on one hand and ensure stable internal signal transmission on the other hand. The SMA terminal is the connecting end of the SMA connector, and the SMA connector is a widely used small-sized threaded coaxial connector, which has the characteristics of wide frequency band, high performance, high reliability, and long service life.

[0037] Specifically, the inner side of the shell 3 is provided with a first annular groove 32, the outer periphery of the fixed section 133 is correspondingly provided with a second annular groove 133a, a snap ring 6 is arranged between the shell 3 and the fixed section 133, and the inner and outer sides of the snap ring 6 respectively extend into the first annular groove 32 and the second annular groove 133a. The shell 3 can be rotatably mounted on the fixed section 133 in various ways. For example, an annular groove can be formed in the inner side of the shell 3, and the shell 3 can be directly sleeved on the fixed section 133. The two side walls of the annular groove are arranged opposite to the two ends of the fixed section 133 in the axial direction, thereby limiting the axial position of the shell 3 and the fixed section 133, and not affecting the rotation of the shell 3. That is, the relative position of the shell 3 and the fixed section 133 in the axial direction and the normal rotation of the shell 3 can be ensured. In the embodiment, the first annular groove 32 is formed in the inner side of the shell 3, the second annular groove 133a is correspondingly formed in the outer periphery of the fixed section 133, and the snap ring 6 is arranged between the first annular groove 32 and the second annular groove 133a. The snap ring 6 extends into the first annular groove 32 and the second annular groove 133a, thereby achieving the above-mentioned limiting and rotating arrangement functions and meeting the structural requirements.

[0038] In addition, the inner side of the outer conductor 13 is provided with a first limiting protrusion 136, the outer periphery of the insulator 12 is correspondingly provided with a first limiting groove 121, and the first limiting protrusion 136 extends into the first limiting groove 121. In order to avoid the relative movement between the outer conductor 13 and the insulator 12 in the axial direction and to ensure the stability of the structure, the first limiting protrusion 136 is arranged on the inner side of the outer conductor 13, and the first limiting groove 121 is correspondingly arranged on the outer periphery of the insulator 12. The first limiting protrusion 136 extends into the first limiting groove 121, thereby limiting the relative movement between the outer conductor 13 and the insulator 12 in the axial direction and meeting the structural requirements.

[0039] Further, the outer periphery of the center conductor 11 is provided with a second limiting protrusion 112, and the inner side of the insulator 12 is correspondingly provided with a second limiting groove 122, and the second limiting protrusion 112 extends into the second limiting groove 122. Similar to the limiting structure between the outer conductor 13 and the insulator 12, the present application also provides a corresponding limiting structure between the center conductor 11 and the insulator 12, that is, the outer periphery of the center conductor 11 is provided with the second limiting protrusion 112, and the inner side of the insulator 12 is correspondingly provided with the second limiting groove 122, so that the second limiting protrusion 112 extends into the second limiting groove 122, thereby achieving the function of limiting the relative movement of the center conductor 11 and the insulator 12 in the axial direction, and meeting the structural requirements.

[0040] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields within the technical concept of the present application and the content of the present application are included in the patent protection scope of the present application.

Claims

1. A coaxial connector, characterized by, include: The main body includes a central conductor, an insulator sleeved around the central conductor, and an outer conductor sleeved around the insulator. The central conductor and the outer conductor are both disposed axially beyond a first end of the insulator. The portions of the central conductor and the outer conductor extending beyond the first end of the insulator form a first connection portion. The portions of the outer conductor extending beyond the first end of the insulator enclose a receiving area. The receiving area is used to receive the connection end of the IPEX terminal. The outer conductor and the central conductor are used to electrically connect to the IPEX terminal.

2. The coaxial connector of Claim 1, wherein, The inner edge of the portion of the outer conductor extending beyond the first end of the insulator is chamfered to form a first guide portion.

3. The coaxial connector of Claim 1, wherein, The outer edge of the end of the center conductor extending beyond the first end of the insulator is chamfered to form a second guide portion.

4. The coaxial connector of Claim 1, wherein, The portion of the outer conductor extending beyond the first end of the insulator has a notch for accommodating the cable of the IPEX terminal.

5. The coaxial connector as described in claim 1, characterized in that, The center conductor is disposed axially beyond the second end of the insulator, and the portion of the center conductor extending beyond the second end of the insulator forms a second connection with the outer edge of the outer conductor.

6. The coaxial connector as described in claim 5, characterized in that, The coaxial connector further includes a housing rotatably sleeved around the periphery of the main body. The housing is disposed corresponding to the second connecting portion, and the housing and the portion of the outer conductor near the second end are spaced apart to form an accommodating gap. The inner side of the housing is provided with an internal thread for screwing into the SMA terminal. The outer conductor and the center conductor are used for electrical connection with the SMA terminal.

7. The coaxial connector as described in claim 6, characterized in that, The outer conductor includes a fixed section located in the middle and a connecting section located near the second end of the fixed section. The housing is rotatably mounted on the fixed section. The outer diameter of the connecting section is smaller than the outer diameter of the fixed section to form a step at their junction, and an elastic washer is provided at the step.

8. The coaxial connector as described in claim 7, characterized in that, The inner side of the housing is provided with a first annular groove, and the outer periphery of the fixing section is provided with a second annular groove. A retaining ring is provided between the housing and the fixing section, and the inner and outer sides of the retaining ring extend into the first annular groove and the second annular groove, respectively.

9. The coaxial connector as described in claim 1, characterized in that, The inner ring of the outer conductor is provided with a first limiting protrusion, and the outer periphery of the insulator is provided with a first limiting groove, with the first limiting protrusion extending into the first limiting groove.

10. The coaxial connector as claimed in claim 1, characterized in that, The outer circumference of the central conductor is provided with a second limiting protrusion, and the inner side of the insulator is provided with a corresponding second limiting groove, with the second limiting protrusion extending into the second limiting groove.

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