Connector with high air tightness

Abstract

The utility model discloses a connector with strong air tightness, which comprises a shell, one end of the shell is rotatably connected with a nut, the other end of the shell is in threaded connection with a tailstock, the outer wall of the shell is provided with a first clamping table, the shell is sleeved with a first sealing ring, and the first sealing ring abuts against the first clamping table; a second clamping table is arranged on the inner wall of the tailstock, a second sealing ring is arranged in the tailstock, and the second sealing ring is located between the shell and the second clamping table; a central conductor is arranged in the shell, and an insulator is arranged between the central conductor and the shell. According to the utility model, after the equipment is connected with the shell, the first sealing ring can fill a gap between the shell and the equipment to prevent rainwater and moisture from permeating, and after the cable is connected with the tail seat, the second sealing ring can fill a gap between the tail seat and the shell to prevent moisture and rainwater from entering the connector from the tail part of the connector. Therefore, a good sealing effect on the connector is achieved, and the air tightness of the connector is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector with strong air tightness. Background Art

[0002] With the rapid development of information technology, the requirements for signal input and output devices are increasing. The connection between cables and devices is generally through connectors to achieve signal input and output. Common connector types include SMA connectors, MCX connectors and BNC connectors, etc. SMA connectors are a widely used small threaded coaxial connector with wide bandwidth, excellent performance, high reliability and long life. SMA connectors are suitable for connecting RF cables or microstrip lines in RF circuits of microwave equipment and digital communication systems.

[0003] As the equipment use environment becomes more complex, some equipment needs to work in a rainy and humid environment. In a rainy and humid environment, rain or moisture can easily penetrate into the inside of the connector, causing corrosion to the cables inside the connector, affecting signal transmission or causing leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a connector with strong airtightness in view of the above-mentioned deficiencies in the prior art.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A connector with strong airtightness comprises a shell, one end of which is rotatably connected to a nut, and the other end of which is threadedly connected to a tailstock, an outer wall of the shell is provided with a first clamping platform, a first sealing ring is sleeved on the shell, and the first sealing ring abuts against the first clamping platform; a second clamping platform is provided on the inner wall of the tailstock, a second sealing ring is provided in the tailstock, and the second sealing ring is located between the shell and the second clamping platform; a central conductor is provided in the shell, and an insulator is provided between the central conductor and the shell.

[0007] Preferably, a retaining ring is disposed on the outer wall of the shell, a groove is formed on the inner wall of the nut, and the retaining ring is disposed in the groove.

[0008] Preferably, a welding body is provided in the tailstock, and the second sealing ring is located between the welding body and the second clamping platform.

[0009] Preferably, a fixing sleeve is sleeved on the central conductor, and the fixing sleeve is located between the central conductor and the shell to fix the central conductor.

[0010] Preferably, the fixing sleeve is formed by high-temperature sintering of glass powder.

[0011] Preferably, the central conductor, the fixing sleeve and the housing are fixedly connected by high-temperature sintering.

[0012] Preferably, a pressure ring is further provided in the shell, one end of the pressure ring abuts against the fixing sleeve, and the other end of the pressure ring abuts against the welding body.

[0013] Preferably, a sealant is provided in the shell, and the sealant is located at an end of the welding body away from the pressure ring.

[0014] Preferably, the sealant is silicone rubber.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] 1. In the utility model, a first sealing ring is sleeved on the shell. When the shell is connected to the device, the first sealing ring can fill the gap between the shell and the device, thereby playing a sealing role. After the cable is inserted into the tailstock and the tailstock is connected to the shell, the second sealing ring can fill the gap between the cable and the shell, thereby achieving a better sealing effect, enhancing the air tightness of the connector, and enabling the connector to be used in a humid and rainy environment;

[0017] 2. In the utility model, the fixing sleeve is arranged between the center conductor and the shell, and the center conductor, the fixing sleeve and the shell are fixedly connected by high-temperature sintering. After the cable is connected to the center conductor, the cable may be bent repeatedly, and the fixing sleeve can fix the center conductor to avoid displacement of the center conductor, which is beneficial to signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] In the figure: 1 is a housing, 2 is a nut, 3 is a tailstock, 4 is a first clamping table, 5 is a first sealing ring, 6 is a second clamping table, 7 is a second sealing ring, 8 is a center conductor, 9 is an insulator, 10 is a retaining spring, 11 is a groove, 12 is a welding body, 13 is a fixing sleeve, 14 is a pressure ring, and 15 is a sealant. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1As shown, a connector with strong airtightness includes a shell 1, one end of the shell 1 is rotatably connected to a nut 2, and the other end is threadedly connected to a tailstock 3, the outer wall of the shell 1 is provided with a first clamping platform 4, and the nut 2 is also rotatably set on the outside of the first clamping platform 4, the shell 1 is sleeved with a first sealing ring 5, and the first sealing ring 5 abuts against the first clamping platform 4; the inner wall of the tailstock 3 is provided with a second clamping platform 6, and the tailstock 3 is provided with a second sealing ring 7, and the second sealing ring 7 is located between the shell 1 and the second clamping platform 6; a central conductor 8 is provided in the shell 1, and an insulator 9 is provided between the central conductor 8 and the shell 1. In the present invention, the cable is inserted into the tailstock 3, and then the tailstock 3 is threadedly connected and fixed with the shell 1. The second sealing ring 7 is located between the second card platform 6 and the tail end of the shell 1. As the tailstock 3 and the shell 1 are continuously tightened, the shell 1 and the second card platform 6 will squeeze the second sealing ring 7, so that the gap between the second sealing ring 7 and the second card platform 6 is filled, so that the tailstock 3 and the shell 1 are sealed; and after the tailstock 3 and the shell 1 are connected and fixed, the cable is connected to the center conductor 8, so that the signal can be transmitted to the center conductor 8. In order to enable the signal to be transmitted to the device, when the shell 1 is connected to the device, a connecting column with an external thread is generally provided on the device, which is connected to the connecting column on the device through a nut 2, so that the connector is connected to the device, and the signal on the center conductor 8 is transmitted to the device. During the tightening process of the nut 2 and the connecting column, the distance between the first card platform 4 and the device connecting column is continuously reduced, thereby squeezing the first sealing ring 5, realizing the sealing between the connector and the device, enhancing the air tightness of the connector, and preventing moisture or rainwater from entering the connector through the gap.

[0024] Furthermore, a third clamping platform may be provided on the outer wall of the shell 1, and a third sealing ring is sleeved on the outer wall of the shell 1, and the third sealing ring abuts against the third clamping platform. When the tail stock 3 is in the process of tightening the shell 1, the distance between the upper end of the tail stock 3 and the third clamping platform is continuously reduced, thereby squeezing the third sealing ring, so that the tail stock 3 and the shell 1 are further sealed, thereby enhancing the air tightness of the connector.

[0025] Furthermore, a retaining spring 10 is provided on the outer wall of the shell 1, and an annular retaining groove is provided on the outer wall of the shell 1. The inner side of the retaining spring 10 is retained in the retaining groove. The retaining groove is located below the first retaining platform 4. An annular groove 11 is provided on the inner wall of the nut 2. The outer side of the retaining spring 10 is retained in the groove 11, so that the nut 2 can always be connected to the shell 1 without separation during the rotation process.

[0026] Furthermore, a welding body 12 is provided in the tailstock 3, and the welding body 12 is used for welding with the cable. The second sealing ring 7 is located between the welding body 12 and the second clamping table 6. First, the tailstock 3 and the outer shell 1 are separated, and then the cable is passed through the tailstock 3, and then the cable is welded to the welding body 12, and the welding body 12 is inserted into the tailstock 3 so that the welding body 12 abuts against the second sealing ring 7. Finally, the tailstock 3 is threadedly fixedly connected with the outer shell 1. As the tailstock 3 is continuously tightened, the second sealing ring 7 between the welding body 12 and the second clamping table 6 is continuously squeezed, thereby achieving sealing.

[0027] Furthermore, a fixing sleeve 13 is sleeved on the center conductor 8, and the fixing sleeve 13 is formed by high-temperature sintering of glass powder. The fixing sleeve 13 is located between the center conductor 8 and the shell 1 to fix the center conductor 8. First, after the connector is assembled, the cable is inserted into the tail seat 3 and connected to the center conductor 8. During the use of the equipment, the cable will inevitably bend, and some forces will inevitably be transmitted to the center conductor 8 during the bending process, causing the center conductor 8 to shift, etc. The fixing sleeve 13 is supported by high-temperature sintering of glass powder, has strong hardness and rigidity, can fix and limit the center conductor 8 to prevent the center conductor 8 from shifting, and the fixing sleeve 13 has insulation, can isolate the center conductor 8 from the shell 1, and avoid signal leakage; at the same time, the center conductor 8, the fixing sleeve 13 and the shell 1 are fixedly connected by high-temperature sintering, which can further improve the stability of the center conductor 8, and the three are sintered to eliminate the gap between the three, further enhancing the airtightness.

[0028] Furthermore, a pressure ring 14 is further provided in the shell 1, one end of the pressure ring 14 abuts against the fixing sleeve 13, and the other end abuts against the welding body 12. The interior of the shell 1 is a step-like structure, and four steps are respectively provided from top to bottom, and the inner diameter of the shell 1 gradually increases. The outer wall of the insulator 9 is a two-step-like structure, and the insulator 9 is made of PTFE material. The outer wall of the insulator 9 is adapted to the first and second steps of the inner wall of the shell 1, and the insulator 9 is inserted into the shell 1. The fixing sleeve 13 is inserted into the third step in the shell 1, and the upper end of the fixing sleeve 13 abuts against the lower end of the insulator 9. The pressure ring 14 is clamped at the fourth step in the shell 1, and the upper end of the pressure ring 14 abuts against the lower end of the fixing sleeve 13. After the tail stock 13 is tightened in the shell 1, the upper end of the welding body 12 abuts against the lower end of the pressure ring 14, so that the insulator 9, the fixing sleeve 13 and the pressure ring 14 can be fixed in the shell 1.

[0029] Furthermore, a sealant 15 is provided in the housing 1, and the sealant 15 is located at one end of the welding body 12 away from the pressure ring 14. After the cable is connected to the center conductor and the device and the connector are connected and fixed, the sealant 15 can be injected into the tailstock 3 to fill the gap between the cable and the inner wall of the tailstock 3 to seal the connector.

[0030] Furthermore, the sealant 15 is silicone rubber.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connector with strong airtightness, characterized in that: The invention comprises a shell (1), one end of which is rotatably connected to a nut (2), and the other end of which is threadedly connected to a tailstock (3); a first clamping platform (4) is provided on the outer wall of the shell (1), a first sealing ring (5) is sleeved on the shell (1), and the first sealing ring (5) abuts against the first clamping platform (4); a second clamping platform (6) is provided on the inner wall of the tailstock (3), a second sealing ring (7) is provided in the tailstock (3), and the second sealing ring (7) is located between the shell (1) and the second clamping platform (6); a central conductor (8) is provided in the shell (1), and an insulator (9) is provided between the central conductor (8) and the shell (1).

2. A connector with strong airtightness according to claim 1, characterized in that: A retaining ring (10) is clamped on the outer wall of the housing (1), a groove (11) is formed on the inner wall of the nut (2), and the retaining ring (10) is clamped in the groove (11).

3. The airtight connector according to claim 1, characterized in that: A welding body (12) is arranged inside the tailstock (3), and the second sealing ring (7) is located between the welding body (12) and the second clamping platform (6).

4. A connector with strong airtightness according to claim 3, characterized in that: A fixing sleeve (13) is sleeved on the central conductor (8); the fixing sleeve (13) is located between the central conductor (8) and the housing (1) and fixes the central conductor (8).

5. A connector with strong airtightness according to claim 4, characterized in that: The fixing sleeve (13) is formed by high-temperature sintering of glass powder.

6. A connector with strong airtightness according to claim 5, characterized in that: The central conductor (8), the fixing sleeve (13) and the housing (1) are fixedly connected by high-temperature sintering.

7. The airtight connector according to claim 4, characterized in that: A pressure ring (14) is also provided in the shell (1), one end of the pressure ring (14) abuts against the fixing sleeve (13), and the other end of the pressure ring (14) abuts against the welding body (12).

8. The airtight connector according to claim 4, characterized in that: A sealant (15) is provided in the shell (1), and the sealant (15) is located at an end of the welding body (12) away from the pressure ring (14).

9. The airtight connector according to claim 8, characterized in that: The sealant (15) is silicone rubber.

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