A double-check blocking waterproof SMA connector
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN RUILONG ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-11-04
- Publication Date
- 2026-08-07
AI Technical Summary
而在现有的SMA连接器的防水结构如图5所示,其中只能外部防水或者内部防水需要在内部增加防水圈才能防水的情况,此结构采用防水胶圈阻断外部水从位置A进入到机盒内部,而需要阻断的位置B和C位置不防水,这样外部水体则容易进入到SMA连接器;则需要与SMA内螺纹公头对锁后才能防水进入机盒内部,此方案有能效防水,但组装复杂,成本高
[0012] The beneficial effects of this utility model are as follows: This utility model provides double inner barbs at the contact point between the SMA outer conductor and the insulator, and double outer barbs at the contact point between the SMA inner conductor and the insulator. Neither the double inner nor double outer barbs have straight patterns. Thus, the double inner barbs are used to waterproof and seal the connection between the insulator and the SMA outer conductor, and the double outer barbs are used to waterproof and seal the connection between the insulator and the SMA inner conductor. This achieves all-around waterproofing and features simple assembly and low cost. It is effective in waterproofing whether the SMA male connector is locked or not.
Smart Images

Figure CN224610207U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of SMA connector technology, and in particular to a double barb blocking waterproof SMA connector. Background Technology
[0002] SMA connectors are widely used small threaded coaxial connectors characterized by wide bandwidth, superior performance, high reliability, and long lifespan. SMA connectors are suitable for connecting RF cables or microstrip lines in the RF loops of microwave equipment and digital communication systems, and are applicable to microwave applications up to 18 GHz. Existing SMA connector waterproof structures, such as... Figure 5 As shown, in cases where only external waterproofing is possible or internal waterproofing requires the addition of an internal waterproof ring, this structure uses a waterproof rubber ring to block external water from entering the chassis from position A. However, positions B and C, which need to be blocked, are not waterproof, allowing external water to easily enter the SMA connector. Therefore, it is necessary to lock the connector with the SMA internal thread male to prevent water from entering the chassis. This solution is energy-efficient and waterproof, but it is complex to assemble and costly. Summary of the Invention
[0003] To overcome the technical defects of the existing technology, this utility model provides a double barbed blocking waterproof SMA connector, which has a simple structure, can lock the hose, prevent the hose from coming out of the socket, and effectively prevent the risk of the hose coming out when it is under force and blocked.
[0004] The technical solution adopted by this utility model is: a double barb blocking waterproof SMA connector, including an SMA outer conductor and an SMA inner conductor that are mated to each other, an insulator is provided between the SMA outer conductor and the SMA inner conductor, the SMA outer conductor is provided with double inner barbs at the contact part with the insulator, and the SMA inner conductor is provided with double outer barbs at the contact part with the insulator, and neither the double inner barbs nor the double outer barbs are decorated with straight patterns.
[0005] Preferably, the double inner barbs are used to waterproof and seal the connection between the insulator and the SMA outer conductor.
[0006] Preferably, the double external barbs are used to waterproof and seal the connection between the insulator and the inner conductor of the SMA.
[0007] Preferably, the outer conductor of the SMA is provided with a contact plate that abuts against the inner wall of the housing.
[0008] Preferably, a waterproof rubber ring is provided between the contact plate and the inner wall of the housing.
[0009] Preferably, the contact plate is sealed to the inner wall of the housing by a waterproof adhesive layer.
[0010] Preferably, the SMA outer conductor is made of H8 hexagonal bar.
[0011] Preferably, the inner conductor of the SMA is made of phosphor bronze or brass.
[0012] The beneficial effects of this utility model are as follows: This utility model provides double inner barbs at the contact point between the SMA outer conductor and the insulator, and double outer barbs at the contact point between the SMA inner conductor and the insulator. Neither the double inner nor double outer barbs have straight patterns. Thus, the double inner barbs are used to waterproof and seal the connection between the insulator and the SMA outer conductor, and the double outer barbs are used to waterproof and seal the connection between the insulator and the SMA inner conductor. This achieves all-around waterproofing and features simple assembly and low cost. It is effective in waterproofing whether the SMA male connector is locked or not. Attached Figure Description
[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the double inner barb structure of this utility model; Figure 3 This is a schematic diagram of the double external barbs of this utility model; Figure 4 A schematic diagram of applying waterproof adhesive to the contact plate of this utility model; Figure 5 This is a schematic diagram illustrating the waterproofing of the existing SMA connector.
[0015] Explanation of reference numerals in the attached diagram: 1. SMA outer conductor; 2. SMA inner conductor; 3. Insulator; 4. Double inner barb; 5. Double outer barb; 6. Housing; 7. Contact plate; 8. Waterproof rubber ring. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.
[0017] like Figures 1-4 As shown, this embodiment provides an SMA outer conductor 1 and an SMA inner conductor 2 that are interconnected. An insulator 3 is provided between the SMA outer conductor 1 and the SMA inner conductor 2. The SMA outer conductor 1 has double inner barbs 4 at the contact point with the insulator 3, and the SMA inner conductor 2 has double outer barbs 5 at the contact point with the insulator 3. Neither the double inner barbs 4 nor the double outer barbs 5 have straight patterns. A schematic diagram of the specific structure of the double inner barbs 4 and double outer barbs 5 is shown below. Figure 2 and Figure 3 As shown, its function is to seal the connection with the insulator. The double inner barb 4 is used to waterproof seal the connection between the insulator 3 and the SMA outer conductor 1, thus waterproofing the B position. The double outer barb 5 is used to waterproof the B position, thereby achieving all-round waterproofing. It also features simple assembly and low cost. It can effectively waterproof whether the SMA male connector is locked or not.
[0018] The double external barbs 5 are used to waterproof and seal the connection between the insulator 3 and the SMA inner conductor 2. The SMA outer conductor 1 is provided with an abutment plate 7 that abuts against the inner wall of the housing 6.
[0019] A waterproof rubber ring 8 is provided between the contact plate 7 and the inner wall of the housing 6. The contact plate 7 and the inner wall of the housing 6 are sealed by a waterproof adhesive layer. The use of a waterproof rubber ring or a waterproof adhesive layer can be selected according to requirements.
[0020] The SMA outer conductor is made of H8 hexagonal rod, which further reduces costs.
[0021] The inner conductor 2 of the SMA is made of phosphor bronze or brass, which provides good conductivity.
[0022] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0023] During operation, the SMA outer conductor 1 has double inner barbs 4 at its contact point with the insulator 3, and the SMA inner conductor 2 has double outer barbs 5 at its contact point with the insulator 3. Neither the double inner barbs 4 nor the double outer barbs 5 have straight patterns. Thus, the double inner barbs 4 provide a waterproof seal at the connection between the insulator 3 and the SMA outer conductor 1, and the double outer barbs 5 provide a waterproof seal at the connection between the insulator 3 and the SMA inner conductor 2. This achieves all-around waterproofing and features simple assembly and low cost. It is effective in waterproofing whether the SMA male connector is locked or not.
[0024] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.
Claims
1. A double-barbed, waterproof SMA connector, comprising an SMA outer conductor (1) and an SMA inner conductor (2) mating together, wherein an insulator (3) is provided between the SMA outer conductor (1) and the SMA inner conductor (2), characterized in that: The SMA outer conductor (1) has double inner barbs (4) at the contact point with the insulator (3), and the SMA inner conductor (2) has double outer barbs (5) at the contact point with the insulator (3). Neither the double inner barbs (4) nor the double outer barbs (5) have straight patterns.
2. The double barb blocking waterproof SMA connector according to claim 1, characterized in that: The double inner barb (4) is used to waterproof seal the connection between the insulator (3) and the SMA outer conductor (1).
3. The double barb blocking waterproof SMA connector according to claim 1, characterized in that: The double external barbs (5) are used to waterproof seal the connection between the insulator (3) and the SMA inner conductor (2).
4. The double barb blocking waterproof SMA connector according to claim 1, characterized in that: The outer conductor (1) of the SMA is provided with a contact plate (7) that abuts against the inner wall of the housing (6).
5. A double barb blocking waterproof SMA connector according to claim 4, characterized in that: A waterproof rubber ring (8) is provided between the contact plate (7) and the inner wall of the housing (6).
6. A double barb blocking waterproof SMA connector according to claim 4, characterized in that: The contact plate (7) is sealed to the inner wall of the housing (6) by a waterproof adhesive layer.
7. A double barb blocking waterproof SMA connector according to claim 1, characterized in that: The SMA outer conductor is made of H8 hexagonal rod.
8. A double barb blocking waterproof SMA connector according to claim 1, characterized in that: The inner conductor (2) of the SMA is made of phosphor bronze or brass.