SMA female head spread spectrum connector

Abstract

The utility model discloses an SMA female head spread spectrum connector, comprising an outer shell provided with an accommodating cavity in which a step layer is formed; a center pin disposed within the outer housing by means of an insulator; the clamping ring is configured in the outer shell and enables the insulator to abut against the interior of the accommodating cavity; the inner shell is arranged at the tail end of the outer shell and enables the clamping ring to abut against the step layer. The cushion layer is configured in the outer shell and arranged at one end, close to the inner shell, of the center pin, the inner shell abuts against one end, close to the inner shell, of the center pin through the cushion layer, and a medium space is formed among the clamping ring, the insulator, the center pin and the cushion layer; according to the utility model, the problems that a traditional spread spectrum connector only adopts an insulator made of PTFE material as an insulating medium and has a relatively high dielectric constant, and air as the insulating medium has a lower dielectric constant can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of spread spectrum connector, specifically relates to a SMA female head spread spectrum connector. BACKGROUND

[0002] The radio frequency coaxial connector is a kind of element attached on cable or installed on instrument, as the element of transmission line electrical connection and separation, it is the port of electrical equipment and cable.Currently radio frequency coaxial connector is developing in the direction of miniaturization, high density, high frequency, high reliability, anti-interference etc.Spread spectrum technology is an important aspect of the electrical performance extension of connector, spread spectrum is on the basis of existing connector structure, by improving structure, without increasing cost, realize the widening of existing frequency band.The traditional spread spectrum connector only uses the insulator made of PTFE material as insulating medium, has relatively higher dielectric constant, and air as insulating medium has lower dielectric constant.

[0003] Therefore, the application provides a spread spectrum connector that keeps the relative dielectric constant of insulating medium unchanged and adds air to form a mixed medium. SUMMARY

[0004] To overcome the above-mentioned shortcomings, the utility model discloses a SMA female head spread spectrum connector.

[0005] In order to achieve the above object, the utility model adopts the technical scheme including: the shell body has the accommodation cavity, the accommodation cavity is formed with the stepped layer;The center needle is configured in the shell body by means of the insulator;The snap ring is configured in the shell body and the insulator is butted in the accommodation cavity;The inner shell is configured at the tail end of the shell body and the snap ring is butted on the stepped layer;The pad layer is configured in the shell body and is placed at the center needle close to the inner shell one end, and the inner shell is butted at the center needle close to the inner shell one end by means of the pad layer, wherein the medium space is formed between the snap ring, the insulator, the center needle and the pad layer.

[0006] In the preferred technical scheme of the above-mentioned SMA female head spread spectrum connector, the inner shell includes a welding cup and a tail pipe, the welding cup is located between the snap ring and the tail pipe in the shell body, and the welding cup is butted in the shell body by the tail pipe to fix the snap ring and the pad layer.

[0007] In the preferred technical scheme of the above-mentioned SMA female head spread spectrum connector, the welding cup side surface is provided with an exhaust port.

[0008] In the preferred technical scheme of the above-mentioned SMA female head spread spectrum connector, the tail pipe and the shell body are screw connected.

[0009] In the preferred technical scheme of the SMA female spread spectrum connector, the accommodating cavity of the outer shell body is formed with an enlarged portion, and the solder cup is located in the enlarged portion.

[0010] In the preferred technical scheme of the SMA female spread spectrum connector, the solder cup is made of brass, and the surface of the solder cup is gold-plated.

[0011] In the preferred technical scheme of the SMA female spread spectrum connector, the accommodating cavity is provided with a ring groove, and the insulator is abutted in the ring groove by the snap ring at one end close to the inner shell body.

[0012] In the preferred technical scheme of the SMA female spread spectrum connector, a through hole is formed in the middle of the pad layer.

[0013] In the preferred technical scheme of the SMA female spread spectrum connector, the pad layer is made of insulating material.

[0014] In the preferred technical scheme of the SMA female spread spectrum connector, the center pin is made of beryllium copper, and the outer surface of the center pin is gold-plated.

[0015] The beneficial effects of the utility model are that the snap ring is abutted against the stepped layer by the inner shell body, and the pad layer is abutted against the end of the center pin, so that the medium space is formed between the snap ring, the insulating layer, the center pin and the pad layer, air is filled in the medium space as the insulating medium, the relative dielectric constant in the whole cavity is reduced by combining the insulator as the mixed medium, and the working frequency of the spread spectrum connector is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is the sectional view of the utility model;

[0018] In the drawing: outer shell body 1, accommodating cavity 11, stepped layer 12, medium space 13, enlarged portion 14, ring groove 15, center pin 2, insulator 3, snap ring 4, inner shell body 5, solder cup 51, exhaust port 511, tail pipe 52, pad layer 6, through hole 61. DETAILED DESCRIPTION

[0019] The preferred embodiments of the utility model are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model, and are not intended to limit the protection scope of the utility model.

[0020] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate 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.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense, for example, to refer to fixed connections, detachable connections, or integral connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0022] like Figures 1 to 2 As shown, the SMA female extended spectrum connector of the present invention includes: an outer shell 1, having an accommodating cavity 11, and a stepped layer 12 is formed in the accommodating cavity 11; a center pin 2 is arranged in the outer shell 1 with the help of an insulator 3; a snap ring 4 is arranged in the outer shell 1 and abuts the insulator 3 in the accommodating cavity 11; an inner shell 5 is arranged at the tail end of the outer shell 1 and abuts the snap ring 4 on the stepped layer 12; a pad 6 is arranged in the outer shell 1 and placed on the center pin 2 at one end close to the inner shell 5, and the inner shell 5 presses the center pin 2 at one end close to the inner shell 5 with the help of the pad 6, wherein a dielectric space 13 is formed between the snap ring 4, the insulator 3, the center pin 2 and the pad 6.

[0023] See also Figure 1 、 Figure 2 The outer shell 1 has a head end and a tail end. The outer shell 1 is a hollow structure. A housing cavity 11 is formed inside the outer shell 1. The middle position of the housing cavity 11 of the outer shell 1 has an annular stepped layer 12. One end of the clamping ring 4 is tightly pressed against the stepped layer 12. The center needle 2 is arranged in the outer shell 1 with the help of an insulator 3 and is coaxial with the outer shell 1. The center needle 2 is made of a conductive material. The insulator 3 is relatively located at the head end of the outer shell 1 in the housing cavity 11. The insulator 3 is made of PTFE material. The center needle 2 is arranged at one end near the tail end of the outer shell 1. There is a cushion layer 6, and the tail end of the outer shell 1 is provided with an inner shell 5. When the inner shell 5 is assembled in the outer shell 1, the inner shell 5 presses the clamping ring 4 against the stepped layer 12 of the accommodating cavity 11, and presses the cushion layer 6 against the center needle 2 at one end close to the inner shell 5, so that a dielectric space 13 is formed between the clamping ring 4 and the insulating layer, the center needle 2 and the cushion layer 6. The dielectric space 13 is filled with air as an insulating medium, and at the same time, the insulator 3 is combined as a mixed medium to reduce the relative dielectric constant in the entire cavity to ensure the operating frequency of the spread spectrum connector of this application.

[0024] In one or more embodiments, the through hole 61 is formed in the middle of the gasket 6.

[0025] Referring to Figure 2 , the through hole 61 is formed in the middle of the gasket 6 for conducting the center needle 2 and the inner shell 5 in the medium space 13, so that the core of the cable passing through the inner shell 5 is connected with the center needle 2; in addition, it should be noted that the through hole 61 of the gasket 6 is opened at one end towards the center needle 2 and is blocked by the center needle 2 to ensure the sealing of the medium space 13.

[0026] In one or more embodiments, the inner shell 5 includes a solder cup 51 and a tail pipe 52, the solder cup 51 is located between the clasp 4 and the tail pipe 52 in the outer shell 1, the solder cup 51 is tightly pressed in the outer shell 1 by the tail pipe 52 to fix the clasp 4 and the gasket 6; the surface of the solder cup 51 is provided with an exhaust port 511; the tail pipe 52 is threadedly connected with the outer shell 1; the solder cup 51 is made of brass, and the surface of the solder cup 51 is gold-plated.

[0027] Referring to Figure 2 , the inner shell 5 includes a solder cup 51 and a tail pipe 52, the solder cup 51 is used to connect the core of the external cable, and the at least one exhaust port 511 on the periphery of the solder cup 51 can exhaust the gas in the solder cup 51 when the core is soldered with the solder cup 51, thereby ensuring the stable relative dielectric constant of the present application and the spread spectrum effect of the present application; the tail pipe 52 is used to tightly press the solder cup 51 in the accommodating cavity 11 of the outer shell 1, specifically, when the inner shell 5 is installed on the outer shell 1, the solder cup 51 is first placed in the accommodating cavity 11 of the outer shell 1, and then the tail pipe 52 is screwed into the tail end of the outer shell 1, and when the tail pipe 52 tightly presses the solder cup 51 on the clasp 4 and the gasket 6, the installation of the inner shell 5 is completed, and by threadedly connecting the inner shell 5 to the tail end of the outer shell 1, the present application has the characteristic of convenient disassembly and assembly.

[0028] Referring to Figure 2 , the solder cup 51 and the tail pipe 52 included in the inner shell 5 are both hollow structures, which can facilitate the cable to enter the solder cup 51 and the tail pipe 52, and make the core of the cable connected with the center needle 2 through the through hole 61 of the gasket 6.

[0029] In one possible embodiment, the inner walls of the solder cup 51 and the tail pipe 52 are provided with protruding rings, and sealing rubber rings can be arranged between the protruding rings. Through this arrangement, the cable can be in interference fit with the inner shell 5, further improving the stability of the connection between the core of the cable and the center needle 2, and thereby ensuring the stability of the radio frequency transmission of the present application.

[0030] In one or more embodiments, the accommodating cavity 11 of the outer shell 1 is formed with an enlarged portion 14, and the welding cup 51 is located in the enlarged portion 14.

[0031] Referring to Figure 2 The inner diameter of the enlarged portion 14 is greater than the inner diameter of the medium space 13. In this way, when the clamping ring 4 and the gasket 6 are abutted, the welding cup 51 is controlled to be in contact with the enlarged portion 14 at one end close to the clamping ring 4, so as to avoid the problem that the gasket 6 and the clamping ring 4 are excessively abutted by the welding cup 51, thereby causing the position of the center needle 2 inside the insulator 3 to change.

[0032] In one or more embodiments, the accommodating cavity 11 is provided with a ring groove 15, and the insulator 3 is abutted by the clamping ring 4 at one end close to the inner shell 5 in the ring groove 15.

[0033] Referring to Figure 2 The ring groove 15 is formed on the inner wall of the accommodating cavity 11 of the outer shell 1 from the tail end to the head end direction, the insulator 3 has a protruding portion at the periphery of one end close to the clamping ring 4, and the insulator 3 is clamped in the ring groove 15 of the outer shell 1 by means of the protruding portion formed at the end portion. In this way, the position of the insulator 3 can be further limited, and the problem that the insulator 3 moves towards the head end of the outer shell 1 when the inner shell 5 abuts against the gasket 6 and the center needle 2 can be avoided, thereby ensuring the stability of the position of the center body in the outer shell 1.

[0034] In one or more embodiments, the gasket 6 is made of insulating material. Specifically, the gasket 6 is made of PTFE material.

[0035] In one or more embodiments, the center needle 2 is made of beryllium copper, and the outer surface of the center needle 2 is gold-plated. The center needle 2 is made of conductive material, and beryllium copper has good conductive transmission performance. At the same time, the outer surface of the center needle 2 is gold-plated, which can further reduce the impedance of the center needle 2, so as to improve the working frequency of the spread spectrum connector.

[0036] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. An SMA female spread spectrum connector, characterized by, The utility model relates to a center needle welding cup and tail pipe of a welding cup and tail pipe are fixedly connected to the tail pipe of the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and the tail pipe is fixedly connected to the outer shell, and ​ ​ ​ ​ ​ 2. The SMA female spread spectrum connector of claim 1, wherein: ​ 3. The SMA female spread spectrum connector of claim 2, wherein: ​ 4. The SMA female spread spectrum connector of claim 2, wherein: ​ 5. The SMA female spread spectrum connector of claim 2, wherein: ​ 6. The SMA female spread spectrum connector of claim 2, wherein: ​ 7. The SMA female spread spectrum connector of claim 1, wherein: ​ 8. The SMA female spread spectrum connector of claim 1, wherein: ​ 9. The SMA female spread spectrum connector of claim 1, wherein: ​ 10. The SMA female spread spectrum connector of claim 1, wherein: ​

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