Waterproof SMB connector

Abstract

The utility model discloses a waterproof SMB connector comprising a first main body provided with an installation through hole, and the head and tail ends of the first main body are respectively an SMB butt joint end and a wire butt joint end; the radio frequency assembly comprises a second main body, an insulator, a first flexible wrapping piece, a second flexible wrapping piece and a butt joint terminal, the wire is inserted into the second main body, a braided conductor of the wire is electrically connected with the second main body, a core wire of the wire is fixedly connected with the butt joint terminal, the butt joint terminal is inserted into the insulator, the first flexible wrapping piece is installed between the second main body and the insulator, and the second flexible wrapping piece is installed between the second main body and the insulator. One end, deviating from the first flexible wrapping piece, of the second main body and the wire adjacent to the second main body are wrapped by the second flexible wrapping piece; the radio frequency assembly is inserted into the mounting through hole; the wrapping member wraps and fixedly connects the radio frequency assembly and the butt joint end of the wire rod. The waterproof performance of the connector is improved, and the production efficiency of the assembly is improved by optimizing the structure.

Description

Technical Field

[0001] The utility model relates to the technical field of SMB connectors, in particular to a waterproof SMB connector. Background Art

[0002] The SMB connector is a radio frequency coaxial connector used to connect coaxial cables in high-frequency loops in radio equipment and electronic instruments.

[0003] The existing SMB connector structure is a push-lock type, with its internal terminals mating with the plug terminals to achieve electrical connection. To improve the waterproof performance of the connector, the existing method is to assemble the connector components using a dispensing sealing process and add O-rings to enhance the sealing.

[0004] However, the dispensing sealing process complicates the production of wiring harness components, resulting in low production efficiency. In addition, the O-rings have quality issues such as burrs and are prone to falling off during the production line.

[0005] Therefore, there is an urgent need for a waterproof SMB connector that can solve one or more of the above problems. Utility Model Content

[0006] To address one or more problems existing in the prior art, the present invention provides a waterproof SMB connector. The present invention employs the following technical solutions to address the aforementioned problems: a waterproof SMB connector comprising: a first body having a through-hole for mounting, a head end of the first body being an SMB docking terminal, and a tail end of the first body being a wire docking terminal;

[0007] A radio frequency assembly, comprising: a second body, an insulator, a first flexible package, a second flexible package, and a docking terminal, wherein a wire is inserted into the second body, a braided conductor of the wire is electrically connected to the second body, a core wire of the wire is fixedly connected to a tail end of the docking terminal, a head end of the docking terminal is inserted into a connecting through hole of the insulator, the first flexible package is installed between the second body and the insulator and partially wraps around the docking terminal, and an end of the second body facing away from the first flexible package and an adjacent wire are wrapped by the second flexible package;

[0008] The RF component is inserted into the mounting hole, the insulator is located at the SMB docking end, the insulator is fixed by the mounting hole, the first flexible package is tightly connected to the inner wall of the mounting hole, and the end of the second body facing the insulator is wrapped by the mounting hole and fixed together;

[0009] A wrapping piece, wherein the through hole of the wrapping piece wraps the RF component and the butt end of the wire and fixes them together, and the second flexible wrapping piece is limited and fixed in the through hole.

[0010] In some embodiments, a plurality of sealing flanges connected end to end are formed on the outer side wall of the first flexible package, and the sealing flanges are tightly connected to the inner wall of the mounting through hole.

[0011] In some embodiments, the radio frequency component further includes: a fastening metal ring, the fastening metal ring is clamped onto the braided conductor of the wire and connected to the second body.

[0012] In some embodiments, a first limiting step is provided on the inner side wall of the head end of the mounting through hole, and an elastic member is installed in the mounting through hole. The elastic member is engaged with the first limiting step, and the elastic member is used to fasten the inserted plug.

[0013] Furthermore, a second limiting step is provided in the mounting through hole, the second limiting step is engaged with the insulator, and the second limiting step is located at the lower side of the first limiting step.

[0014] In some embodiments, a first flange is provided on the outer side wall of the butt end of the wire, and the first flange is fixedly engaged with the through hole.

[0015] In some embodiments, the tail end of the first flexible package is inserted into the second body, the tail end of the insulator is inserted into the head end of the first flexible package, and a groove is provided on the end surface of the insulator facing the first flexible package.

[0016] In some embodiments, the first flexible package and the second flexible package are silicone packages.

[0017] In some embodiments, a flange is formed on the periphery of the first body, a mounting groove is provided on the end surface of the flange facing the SMB docking end, and a sealing ring is fixedly installed in the mounting groove.

[0018] In some embodiments, the head end of the docking terminal is a docking spring, which is used to clamp the inserted terminal. The tail end of the docking terminal is a connecting part, which is electrically connected to the core wire of the wire. The outer wall of the docking terminal is provided with a docking piece, which is a protrusion or a spring, and the docking piece is clamped and fixed to the insulator.

[0019] The technical effects achieved by the present invention are: the waterproof performance of the SMB connector is improved through the above-mentioned structure; compared with the glue-dispensing sealing process of the traditional waterproof structure, the structure of the present application not only ensures the waterproof performance, but is also simpler and easier to produce, thereby improving the production efficiency of the wiring harness assembly; the wrapping part and the first and second flexible wrapping parts improve the waterproof performance of the connector, and they cooperate with the first and second main bodies to ensure that the connector has a large holding force to prevent the wire from detaching, and replace the traditional O-ring structure to avoid the burr quality problems and easy falling off problems caused by the O-ring structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the present utility model;

[0021] Figure 2 This is an exploded view of the utility model;

[0022] Figure 3 This is a schematic diagram of the docking of the first body and the packaging member of the utility model;

[0023] Figure 4 is a cross-sectional view of the radio frequency component of the present invention;

[0024] Figure 5 This is a schematic diagram of the combination of the wire and the docking terminal of the utility model;

[0025] Figure 6 This is a schematic diagram of the radio frequency component of the present invention when the flexible package is not installed;

[0026] Figure 7 is a schematic diagram of a radio frequency component of the present invention;

[0027] Figure 8 Schematic diagram of the insulator of the present invention.

[0028] Reference numerals

[0029] 1. First body 10, mounting through hole 101, first limiting step 102, second limiting step 11, first flange 12, second flange 13, groove 14, mounting slot 15, sealing ring 2, elastic member 3, RF component 30, docking terminal 300, docking spring 301, spring 302, flat plugging hole 303, connecting portion 304, limiting portion 31, wire 310, braided conductor 311, fastening metal ring 312, core wire 32, second body 33, insulator 330, connecting through hole 331, narrowing flange 332, docking groove 333, groove 34, first flexible package 340, sealing flange 341, second flexible package 4, wrapping member 40, through hole 5, dotted line. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present invention more readily understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] The utility model discloses a waterproof SMB connector, which comprises: a first body 1, Figure 1-Figure 3 As shown, the first body 1 is provided with a through-mounting through hole 10, the head end of the first body 1 is an SMB docking end, and the tail end of the first body 1 is a wire docking end;

[0032] RF component 3, combined Figure 4 As shown, the RF component 3 includes: a second body 32, an insulator 33, a first flexible package 34, a second flexible package 341 and a docking terminal 30. The wire 31 is inserted into the second body 32, the braided conductor 310 of the wire 31 is electrically connected to the second body 32, the core wire 312 of the wire 31 is fixedly connected to the tail end of the docking terminal 30, the head end of the docking terminal 30 is inserted into the connecting through hole 330 of the insulator 33, the first flexible package 34 is installed between the second body 32 and the insulator 33 and wraps the docking terminal 30, and the end of the second body 32 facing away from the first flexible package 34 and the wire 31 adjacent thereto are wrapped by the second flexible package 341;

[0033] Combine Figure 2-Figure 4 As shown, the RF component 3 is inserted into the mounting through-hole 10, the insulator 33 is located at the SMB docking end, the insulator 33 is limited by the mounting through-hole 10, the first flexible package 34 is tightly connected to the inner wall of the mounting through-hole 10, and the end of the second body 32 facing the insulator 33 is wrapped by the mounting through-hole 10 and fixedly connected together. The first body 1 and the first body 32 are interference fit, such as: the first body 1 is flanged to wrap around the second body 32, thereby obtaining a large holding force;

[0034] Package 4, combined Figure 2 、 Figure 3 As shown, the through hole 40 of the wrapping member 4 wraps the RF component 3 and the wire butt end (the tail end of the first body 1 ) and fixes them together, and the second flexible wrapping member 341 is limited and fixed in the through hole 40 .

[0035] It should be noted that the first flexible package 34 and the second flexible package 341 can be silicone packages, and the first main body 1 and the second main body 32 are conductive metal parts; if the first and second flexible packages are laid out by silicone encapsulation, they should be wrapped at the same time.

[0036] Specifically, combined Figure 2 、 Figure 3 As shown, a first limiting step 101 is provided on the inner side wall of the head end of the mounting through hole 10, and an elastic member 2 is installed in the mounting through hole 10. The elastic member 2 is engaged with the first limiting step 101. The first limiting step 101 prevents the elastic member 2 from falling out of the mounting through hole 10. The elastic member 2 is used to fasten the inserted plug;

[0037] A second limiting step 102 is provided in the mounting through hole 10. The second limiting step 102 engages with the insulator 33. The second limiting step 102 is located below the first limiting step 101 to prevent the insulator 33 from moving outward during the removal process.

[0038] Furthermore, a flange is formed on the periphery of the first body 1 , and a mounting groove 14 is provided on the end surface of the flange facing the SMB docking end. A sealing ring 15 is fixedly installed in the mounting groove 14 , and the sealing ring 15 is clamped on the mounting groove 14 .

[0039] Specifically, combined Figure 2 、 Figure 3 As shown, a first flange 11 is provided on the outer side wall of the butt end of the wire rod, and the first flange 11 is fixedly engaged with the through hole 40 to prevent the wrapping member 4 from being separated;

[0040] After the first body 1 and the RF component 3 are assembled, they can be injection molded to form the packaging member 4;

[0041] A second flange 12 may be provided on the lower side of the first flange 11 , and a groove 13 is formed between the first flange 11 and the second flange 12 to strengthen the connection strength between the first body 1 and the wrapping member 4 ;

[0042] Furthermore, when the wrapping member 4 is a common plug-in component, a limiting step can be provided in the through hole 40 inside it, thereby limiting and fixing the component connected thereto; the wrapping member 4 limits and fixes the second flexible wrapping member 341, and they are tightly connected, so that the wire 31 side can obtain a large holding force and high waterproof performance.

[0043] It should be pointed out that if Figure 4As shown, a plurality of sealing flanges 340 connected end to end are formed on the outer wall of the first flexible package 34. The sealing flanges 340 are tightly connected to the inner wall of the mounting hole 10. The first and second flexible packages prevent water vapor from entering from the insulator 33 side and the wire 31 side, respectively, thereby improving the internal waterproof performance. At the same time, there is no need to reserve a position or a slot for installing a sealing O-ring on the inner wall of the mounting hole 10.

[0044] Furthermore, the RF component 3 also includes: a fastening metal ring 311, which is tightened on the braided conductor 310 of the wire 31 and connected to the second body 32. The fastening metal ring 311 is also wrapped by the second flexible package 341. The fastening metal ring 311 provides retention force to the exposed braided conductor 310 and core wire 312 of the wire 31, ensuring that they are difficult to loosen during assembly and use.

[0045] Specifically, combined Figure 4 、 Figure 8 As shown, the tail end of the first flexible package 34 is inserted into the second body 32, and the tail end of the insulator 33 is inserted into the head end of the first flexible package 34. A groove 333 is provided on the end surface of the insulator 33 facing the first flexible package 34. The groove 333 is used to assist in fixing the first flexible package 34.

[0046] A narrowing flange 331 is provided on the inner side wall of the head end of the connecting through hole 330, and the narrowing flange 331 limits the docking terminal 30, such as: limiting the opening range of the terminal head and preventing the terminal from moving outward; the head end face of the insulator 33 is provided with a docking groove 332, and the docking groove 332 is used for docking limitation of the plug.

[0047] Specifically, combined Figure 4-Figure 7 As shown, in Figure 4 The docking terminal 30 is inserted into the position indicated by the dotted line 5. The leading end of the docking terminal 30 is a docking spring 300, which is used to clamp the inserted terminal. The trailing end of the docking terminal 30 is a connecting portion 303, which is electrically connected to the core wire 312 of the wire 31. The outer wall of the docking terminal 30 is provided with a docking member, which is a protrusion or spring 301, and is fixedly engaged with the insulator 33.

[0048] The connecting portion 303 can wrap and clamp the core wire 312 of the wire 31. The docking terminal 30 can also be provided with a limiter 304 at the tip of the connecting portion 303. The limiter 304 firmly holds the core wire 312 of the wire 31 and limits the insertion depth of the docking terminal 30 on the insulator 33. Furthermore, the tip of the limiter 304 is provided with a flat plugging hole 302 for injecting glue. After the glue is injected, the inner hole depth of the docking terminal 30 is controlled to be approximately 3.2 mm. The docking terminal 30 can also be other conventional terminals as needed.

[0049] To sum up, the waterproof performance of the SMB connector is improved through the above structure; compared with the glue-dispensing sealing process of the traditional waterproof structure, the structure of the present application not only ensures the waterproof performance, but is also simpler and easier to produce, thereby improving the production efficiency of the wiring harness assembly; the wrapping part and the first and second flexible wrapping parts improve the waterproof performance of the connector, and they cooperate with the first and second main bodies to ensure that the connector has a large holding force to prevent the wire from detaching, and replace the traditional O-ring structure to avoid the burr quality problems and easy falling off problems caused by the O-ring structure.

[0050] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to 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. The terms "first position" and "second position" refer to two different positions.

[0051] The embodiments described above merely represent one or more implementations of the present invention. While their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A waterproof SMB connector, characterized in that: include: A first body, wherein the first body is provided with a through-hole for mounting, a head end of the first body is an SMB docking end, and a tail end of the first body is a wire docking end; A radio frequency assembly, comprising: a second body, an insulator, a first flexible package, a second flexible package, and a docking terminal, wherein a wire is inserted into the second body, a braided conductor of the wire is electrically connected to the second body, a core wire of the wire is fixedly connected to a tail end of the docking terminal, a head end of the docking terminal is inserted into the insulator, the first flexible package is installed between the second body and the insulator and wraps the docking terminal, and an end of the second body facing away from the first flexible package and an adjacent wire are wrapped by the second flexible package; The RF component is inserted into the mounting hole, the insulator is located at the SMB docking end, the insulator is limited by the mounting hole, the first flexible package is tightly connected to the inner wall of the mounting hole, and the end of the second body facing the insulator is wrapped by the mounting hole and fixedly connected together; A wrapping piece, wherein the through hole of the wrapping piece wraps the RF component and the butt end of the wire and fixes them together, and the second flexible wrapping piece is limited and fixed in the through hole.

2. The waterproof SMB connector according to claim 1, characterized in that: A plurality of sealing flanges connected end to end are formed on the outer side wall of the first flexible package, and the sealing flanges are tightly connected to the inner wall of the mounting through hole.

3. The waterproof SMB connector according to claim 1, characterized in that: The radio frequency component further includes a fastening metal ring, which is clamped onto the braided conductor of the wire and connected to the second body.

4. The waterproof SMB connector according to claim 1, wherein: A first limiting step is provided on the inner side wall of the head end of the mounting through hole. An elastic member is installed in the mounting through hole. The elastic member is engaged with the first limiting step and is used to fasten the inserted plug.

5. The waterproof SMB connector according to claim 4, characterized in that: A second limiting step is provided in the mounting through hole, the second limiting step is engaged with the insulator, and the second limiting step is located at the lower side of the first limiting step.

6. The waterproof SMB connector according to claim 1, characterized in that: A first flange is provided on the outer side wall of the wire rod butt end, and the first flange is fixedly connected to the through hole.

7. The waterproof SMB connector according to claim 1, wherein: The tail end of the first flexible package is inserted into the second body, the tail end of the insulator is inserted into the head end of the first flexible package, and a groove is provided on the end surface of the insulator facing the first flexible package.

8. The waterproof SMB connector according to claim 1, wherein: The first flexible package and the second flexible package are silicone packages.

9. The waterproof SMB connector according to claim 1, wherein: A flange is formed on the periphery of the first body, and a mounting groove is provided on the end surface of the flange facing the SMB docking end, and a sealing ring is fixedly installed in the mounting groove.

10. The waterproof SMB connector according to claim 1, wherein: The head end of the docking terminal is a docking spring, which is used to clamp the inserted terminal. The tail end of the docking terminal is a connecting part, which is electrically connected to the core wire of the wire. The outer side wall of the docking terminal is provided with a docking piece, which is a protrusion or a spring, and the docking piece is clamped and fixed to the insulator.

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