Locking device and coaxial connection assembly

Abstract

This application belongs to the field of connector technology, and particularly relates to a locking device and a coaxial connection assembly. The locking device includes an insulating shell and a conductive element. The insulating shell is used to fit onto the coaxial connector. The conductive element is disposed inside the insulating shell and is used to clamp between the insulating shell and the coaxial connector. The conductive element includes a conductive body and a first elastic abutment portion and a second elastic abutment portion connected to the conductive body. The first elastic abutment portion is used to elastically abut against the negative contact portion of the male connector, and the second elastic abutment portion is used to elastically abut against the negative contact portion of the female connector. The inner side of the conductive body and / or the inner side of the insulating shell are provided with a locking protrusion. The locking protrusion is used to engage with the slot of the male connector and to abut against the locking pin of the female connector, so that the locking device can lock the coaxial connector, thereby improving the connection reliability, vibration resistance and service life of the coaxial connector.

Description

Technical Field

[0001] This application belongs to the field of connector technology, and in particular relates to a locking device and a coaxial connection assembly. Background Technology

[0002] Coaxial connectors are widely used in various signal transmission scenarios. They have the characteristics of quick connection and disconnection, and can efficiently achieve stable signal transmission. BNC connectors are a typical type of connector and are widely used in communication, electronic equipment and other fields.

[0003] The locking mechanism of a coaxial connector relies on the engagement between a metal pin on the outside of the female connector and a slot on the male connector. This engagement of the pin and slot allows for quick and secure connection, establishing a signal transmission path. This connection method, due to its ease of use, has become the primary form of coaxial connector connection. However, this locking connection method suffers from issues such as loosening and instability in the negative terminal connection. Summary of the Invention

[0004] The purpose of this application is to provide a locking device and a coaxial connection assembly, including but not limited to improving the connection reliability of coaxial connectors.

[0005] To achieve the above objectives, the present application adopts the following technical solution: a locking device for locking a coaxial connector, the coaxial connector including a male connector and a female connector that are plugged into each other, the locking device including an insulating shell and a conductive element; the insulating shell is used to sleeve the coaxial connector; the conductive element is disposed inside the insulating shell and is used to clamp between the insulating shell and the coaxial connector, the conductive element including a conductive body and a first elastic abutment portion and a second elastic abutment portion connected to the conductive body, the first elastic abutment portion being used to elastically abut against the negative contact portion of the male connector, the second elastic abutment portion being used to elastically abut against the negative contact portion of the female connector; the inner side of the conductive body and / or the inner side of the insulating shell are provided with a locking protrusion, the locking protrusion being used to engage in the slot of the male connector and to abut against the locking pin of the female connector.

[0006] Optionally, the first elastic abutment portion includes a first spring piece disposed at one end of the conductive body and protruding from the inner wall of the conductive body, and the second elastic abutment portion includes a second spring piece disposed at the other end of the conductive body and protruding from the inner wall of the conductive body.

[0007] Optionally, the first elastic abutment portion includes a plurality of first spring pieces, which are distributed circumferentially around the coaxial connector; and / or, the second elastic abutment portion includes a plurality of second spring pieces, which are distributed circumferentially around the coaxial connector.

[0008] Optionally, the first spring and / or the second spring are arc-shaped springs, each having a first end and a second end. The first end is connected to the conductive body and is closer to the axis of the insulating shell than the second end.

[0009] Optionally, the insulating housing includes an insulating open ring portion fitted onto the coaxial connector and a locking portion for locking the insulating open ring portion onto the coaxial connector. An engaging protrusion is provided on the inner side of the insulating open ring portion. The conductive body includes a conductive open ring portion provided on the inner side of the insulating open ring portion. The opening of the conductive open ring portion is disposed opposite to the opening of the insulating open ring portion. A first elastic abutment portion and a second elastic abutment portion are provided on the inner side of the conductive open ring portion.

[0010] Optionally, the conductive open ring portion includes a connecting portion and multiple conductive open ring segments sleeved on the coaxial connector. The multiple conductive open ring segments are distributed at intervals along the axial direction of the coaxial connector. Adjacent conductive open ring segments are connected by the connecting portion. The conductive open ring segment opposite to the negative contact portion of the male connector is provided with a first elastic abutment portion, and the conductive open ring segment opposite to the negative contact portion of the female connector is provided with a second elastic abutment portion.

[0011] Optionally, the locking part includes a first connecting part and a second connecting part connected to each other, the first connecting part and the second connecting part being respectively connected to both ends of the insulating open ring part along the circumference of the coaxial connector.

[0012] Optionally, the first connecting part and the second connecting part are connected by fasteners.

[0013] Optionally, the locking part includes a locking sleeve, which is sleeved outside the insulating open ring and locks the insulating open ring.

[0014] Optionally, the insulating open ring is threaded into the locking sleeve body.

[0015] Optionally, a nylon coating, nylon patch, or anti-loosening adhesive is provided between the locking sleeve and the insulating open ring.

[0016] Optionally, the inner side of the locking sleeve is provided with an annular protrusion, and a sealing ring is held between the insulating open ring and the annular protrusion.

[0017] Optionally, the inner side of the insulating open ring is provided with an engagement groove for engaging with the male connector.

[0018] Optionally, the conductive component is a silver-plated beryllium copper component.

[0019] Another technical solution adopted in this application is: a coaxial connection assembly, including a coaxial connector and the above-mentioned locking device. The coaxial connector includes a male connector and a female connector, which are mutually plugged into each other. The locking pin of the female connector is engaged in the locking groove of the male connector. An insulating shell is sleeved on the outside of the coaxial connector, and the engaging protrusion is engaged in the locking groove and abuts against the locking pin. The first elastic abutting part elastically abuts against the negative contact part of the male connector, and the second elastic abutting part elastically abuts against the negative contact part of the female connector.

[0020] The locking device and coaxial connection assembly provided in this application have at least one of the following technical effects: When the locking device is in use, the insulating shell is fitted over the inserted male and female connectors, causing the inner engaging protrusions to engage with the groove of the male connector and abut against the locking pin of the female connector, thus preventing rotation. At this time, the first and second elastic abutting parts of the conductive component are radially compressed, elastically abutting against the negative contact parts of the male and female connectors respectively, forming redundant conductive paths and achieving dynamic vibration compensation. After assembly, the insulating shell simultaneously provides insulation, dustproof, and moisture-proof protection. The entire operation process is convenient and efficient, requiring no complex tools, adaptable to various complex application scenarios, effectively solving the inherent defects of traditional snap-fit ​​coaxial connectors, and significantly improving the connection reliability, vibration resistance, and service life of the coaxial connector. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of a coaxial connector provided in related technologies.

[0023] Figure 2 A cross-sectional view of a coaxial connection assembly provided in some embodiments of this application.

[0024] Figure 3 This is a schematic diagram of the structure of a locking device provided in some embodiments of this application.

[0025] Figure 4 for Figure 3 The diagram shows the structure of the locking device.

[0026] Figure 5 For along Figure 4 Sectional view along line AA in the middle.

[0027] Figure 6 for Figure 3 An exploded view of the locking device shown.

[0028] Figure 7 This is a schematic diagram of the locking device provided in some other embodiments of this application.

[0029] Figure 8 for Figure 7 A partial structural schematic diagram of the conductive component is shown.

[0030] Figure 9 for Figure 7 A partial structural schematic diagram of the conductive component is shown.

[0031] The following are the labeling elements in the figure: 10. Locking device; 11. Insulating housing; 111. Insulating open ring; 1111. Engaging groove; 112. Locking part; 1121. First connecting part; 11211. Mounting hole; 1122. Second connecting part; 1123. Locking sleeve; 1124. Annular protrusion; 12. Conductive component; 121. Conductive body; 1211. Conductive open ring; 12111. Conductive open ring segment; 12112. Connecting part; 12113. Clearance hole; 122. First elastic abutment part; 1221. First spring piece; 123. Second elastic abutment part; 1231. Second spring piece; 13. Engaging protrusion; 14. Sealing ring; 20. Coaxial connector; 21. Male connector; 211. Slot; 22. Female connector; 221. Locking pin; 23. Negative contact part. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature.

[0034] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this application, it should be understood that the terms "inner", "outer", "side", "upper", "bottom", "front", "rear", etc., indicating the orientation or positional relationship are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0039] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0040] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0041] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0042] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0043] Coaxial connectors are widely used in various signal transmission scenarios. They have the characteristics of quick connection and disconnection, and can efficiently achieve stable signal transmission. BNC connectors are a typical type of connector and are widely used in communication, electronic equipment and other fields.

[0044] The locking mechanism of a coaxial connector relies on the engagement between a metal pin on the outside of the female connector and a slot on the male connector. The engagement of the pin and the slot allows for quick and secure connection between the male and female connectors, thus establishing a signal transmission path. This connection method, due to its ease of operation, has become the main connection type for coaxial connectors.

[0045] However, the aforementioned snap-fit ​​connection method has many inherent defects in practical applications, making it difficult to meet the needs of complex scenarios. Specifically: First, it has poor vibration resistance. In environments with continuous mechanical vibration or impact, such as industrial equipment and vehicles, the snap-fit ​​structure is prone to small gaps or relative displacement, leading to fluctuations in contact resistance and causing problems such as signal attenuation, intermittent transmission, or even signal loss, seriously affecting the stability of signal transmission. Second, the negative electrode conduction path is singular. The negative electrode conduction of the signal relies entirely on the limited contact point between the male connector shell and the female connector shell. During long-term use, this contact point is susceptible to corrosion, oxidation, or other environmental factors. Loose snap-fit ​​connections can lead to poor contact, easily becoming a potential source of signal transmission failure and affecting the connector's lifespan and reliability. Thirdly, the lack of anti-rotation design means that even after connection, slight relative rotation can still occur between the male and female connectors. This rotation continuously wears down the contact points, significantly degrading connection performance over time and further exacerbating signal transmission instability. Fourthly, the insulation protection process is cumbersome. In applications requiring insulation protection, heat shrink tubing is typically applied to the connector connection and heated to achieve insulation. This process is not only cumbersome and time-consuming, but also makes subsequent inspection and maintenance difficult after the heat shrink tubing is applied.

[0046] To address the aforementioned shortcomings, although methods have been employed to heat shrink the wire with copper wire, this approach only provides basic auxiliary fixation and insulation. It cannot fundamentally resolve the defects of the snap-fit ​​structure, such as vibration, rotation, and a single negative electrode path. Furthermore, the operation is often irregular, the results are poor, and its practicality is limited.

[0047] Based on this, this application provides a locking device for locking the male and female connectors of a coaxial connector. This locking device eliminates the need for additional processes such as heat shrink tubing, and provides a revolutionary, standardized connection reinforcement solution with ultra-high environmental adaptability for stable transmission of radio frequency signals in high-end equipment fields such as automotive, military, and aerospace.

[0048] The following combination Figures 1-9 The locking device 10 of the present application embodiment will be described.

[0049] like Figures 1-6 As shown, in some embodiments, the locking device 10 is used to lock the coaxial connector 20, which includes a male connector 21 and a female connector 22 that are inserted into each other. The locking device 10 includes an insulating housing 11 and a conductive element 12. The insulating housing 11 is used to fit over the coaxial connector 20. The conductive element 12 is disposed inside the insulating housing 11 and is used to clamp between the insulating housing 11 and the coaxial connector 20. The conductive element 12 includes a conductive body 121 and a component connected to the conductive body 121. The first elastic abutment portion 122 and the second elastic abutment portion 123 are connected. The first elastic abutment portion 122 is used to elastically abut against the negative contact portion 23 of the male connector 21, and the second elastic abutment portion 123 is used to elastically abut against the negative contact portion 23 of the female connector 22. The inner side of the conductive body 121 and / or the inner side of the insulating shell 11 are provided with a locking protrusion 13, which is used to lock into the slot 211 of the male connector 21 and to abut against the locking pin 221 of the female connector 22.

[0050] The insulating housing 11 serves as the mounting base and protective component of the locking device 10. Sleeveted onto the connection point of the coaxial connector 20, the insulating housing 11 provides stable mounting support for the conductive component 12 and directly achieves insulation protection, while also possessing certain dustproof and moisture-proof functions. The insulating housing 11 can be made of materials with excellent insulation performance and high mechanical strength. For example, engineering plastics (such as POM (Polyoxymethylene), reinforced nylon, etc.), insulating rubber, epoxy resin, etc., can be selected. This effectively prevents accidental short circuits or electric shock risks and adapts to the usage requirements of different scenarios. Its overall structure can be adapted to the external dimensions of the coaxial connector 20 to ensure a tight fit after sleeve, without affecting the overall installation space.

[0051] The conductive component 12 is a component capable of conducting electricity. It is located inside the insulating housing 11 and can be fixedly connected to the insulating housing 11 by means of snap-fit, embedding, or bonding, ensuring that it will not shift due to vibration after installation. The conductive component 12 is made entirely of a material with excellent conductivity and good elasticity. For example, copper alloys, elastic conductive sheets, or silver-plated elastic components can be used, ensuring both low impedance transmission and good elastic recovery capability to meet the requirements of long-term elastic contact.

[0052] The conductive body 121 can be the main body of the guiding component 12. The conductive body 121 connects the first elastic abutment portion 122 and the second elastic abutment portion 123 to form a complete conductive path, ensuring stable conduction of the signal current. The first elastic abutment portion 122 and the second elastic abutment portion 123 elastically abut with the negative contact portion 23 of the male connector 21 and the negative contact portion 23 of the female connector 22, respectively. The conductive body 121, the first elastic abutment portion 122, and the second elastic abutment portion 123 are integrally formed or fixedly connected by conductive connectors to ensure smooth conduction of the signal current. The negative contact portion 23 of the female connector 22 can refer to the outer shell of the female connector 22 or the grounding spring area; the negative contact portion 23 of the male connector 21 can refer to the outer shell of the male connector 21 or the grounding spring area.

[0053] The first elastic abutment portion 122 is used to elastically abut against the negative contact portion 23 of the male connector 21, and the second elastic abutment portion 123 is used to elastically abut against the negative contact portion 23 of the female connector 22. When the locking device 10 is fitted onto the coaxial connector 20 and the assembly is completed, the conductive element 12 is clamped between the coaxial connector 20 and the insulating shell 11. The first elastic abutment portion 122 and the second elastic abutment portion 123 are radially compressed, generating a continuous rebound force, so that the first elastic abutment portion 122 and the second elastic abutment portion 123 are tightly abutted against the negative contact portion 23 of the male connector 21 and the negative contact portion 23 of the female connector 22, respectively, thereby forming a negative electrode path. This design does not reinforce the original negative electrode conduction path, but adds a parallel conductive path with low impedance and large contact area. Even if the negative electrode contact 23 of the male connector 21 and the female connector 22 experiences a microsecond-level momentary interruption due to vibration, the signal current can still be stably transmitted through this redundant and more reliable electrical bridge. It is especially suitable for high-frequency signals and sensitive measurement systems, and can significantly reduce contact resistance and signal noise, and improve the stability and accuracy of signal transmission.

[0054] The rebound force of the first elastic abutment part 122 and the second elastic abutment part 123 will continuously act on the negative contact part 23 of the male connector 21 and the female connector 22, keeping them in a pressed state and forming a dynamic compensation mechanism: when vibration causes slight deformation of the coaxial connector 20 or wear of the contact parts, the first elastic abutment part 122 and the second elastic abutment part 123 can automatically compensate for the gap generated by their own elasticity, so as to achieve the effect of always pressing; in addition, the first elastic abutment part 122 and the second elastic abutment part 123 can also absorb and dissipate some vibration energy, avoiding further impact of vibration on the connection structure, solving the problem that traditional rigid locking is prone to loosening due to material creep or wear under vibration, which is the key to achieving ultra-high vibration resistance performance.

[0055] The engaging protrusion 13 can refer to a protruding structure used for insertion into the slot 211 of the male connector 21. The engaging protrusion 13 can be located on the inner side of the conductive body 121 or on the inner side of the insulating housing 11.

[0056] The size and position of the engaging protrusion 13 match the slot 211 of the male connector 21 and the locking pin 221 of the female connector 22. During assembly, the engaging protrusion 13 engages into the slot 211 of the male connector 21 and simultaneously abuts against the locking pin 221 of the female connector 22 to form a mechanical stop, making the locking device 10, male connector 21, and female connector 22 form an integral structure, preventing relative rotation. This design utilizes the existing locking pin 221 and slot 211 structure of the female connector 22 and male connector 21 housings to achieve the connection of the male connector 21, female connector 22, and locking device 10, preventing relative rotation among the three. This solves the problem of poor contact caused by slight rotation and wear of the contact points after connection of the coaxial connector 20, achieving maximum anti-rotation effect and further enhancing the connection stability of the male connector 21 and female connector 22.

[0057] The insulating housing 11 integrates the insulation function into the locking device 10, eliminating the need for additional insulating components. After the user completes the tightening operation of the locking device 10, the insulation protection of the coaxial connector 20 connection can be completed simultaneously, completely eliminating the tedious process of additional heat shrink tubing and heat treatment. This not only improves installation efficiency but also eliminates the quality risks caused by uneven heat shrinking, heat shrink tubing damage, or forgetting to install heat shrink tubing. It also facilitates the later inspection and maintenance of the coaxial connector 20.

[0058] In this embodiment of the locking device 10, the insulating housing 11 is fitted over the inserted male connector 21 and female connector 22, causing the inner engaging protrusion 13 to engage with the slot 211 of the male connector 21 and abut against the locking pin 221 of the female connector 22, thus preventing rotation. At this time, the first elastic abutment portion 122 and the second elastic abutment portion 123 of the conductive element 12 are radially compressed, elastically abutting against the negative contact portion 23 of the male connector 21 and the female connector 22, respectively, forming a redundant conductive path and achieving dynamic vibration compensation. After assembly, the insulating housing 11 simultaneously provides insulation, dustproof, and moisture-proof protection. The entire operation process is convenient and efficient, requiring no complex tools, and is suitable for various complex application scenarios. It effectively solves the inherent defects of traditional snap-fit ​​coaxial connectors 20, and significantly improves the connection reliability, vibration resistance, and service life of the coaxial connector 20.

[0059] like Figures 3-6 As shown, in some embodiments, the first elastic abutment portion 122 includes a first spring piece 1221 disposed at one end of the conductive body 121 and protruding from the inner wall of the conductive body 121, and the second elastic abutment portion 123 includes a second spring piece 1231 disposed at the other end of the conductive body 121 and protruding from the inner wall of the conductive body 121.

[0060] The first spring piece 1221 can be a sheet-like structure that guides the conductive component 12 to deform and abut against the negative contact portion 23 of the male connector 21. The first spring piece 1221 is located at one end of the conductive body 121 and protrudes in the direction away from the inner wall of the conductive body 121. When the insulating shell 11 is sleeved on the coaxial connector 20, the negative contact portion 23 of the male connector 21 squeezes the first spring piece 1221 and deforms it toward the inner wall of the conductive body 121, so that the first spring piece 1221 can elastically abut against the negative contact portion 23 of the male connector 21. The first spring piece 1221 can be connected to the conductive body 121 by an integral molding process. For example, it can be formed by stamping, bending, etc., which not only ensures the connection strength with the conductive body 121, but also ensures that it has a stable elastic recovery ability, avoiding elastic failure after long-term use. The protrusion height and bending angle of the first spring 1221 can be adapted to the size of the coaxial connector 20 and the position of the negative contact 23 to ensure that it can be effectively compressed after assembly and generate sufficient rebound force.

[0061] The second spring piece 1231 can be a sheet-like structure that guides the conductive component 12 to deform and abut against the negative contact portion 23 of the female connector 22. The second spring piece 1231 is located at the other end of the conductive body 121 and protrudes in the direction away from the inner wall of the conductive body 121. When the insulating shell 11 is sleeved on the coaxial connector 20, the negative contact portion 23 of the female connector 22 squeezes the second spring piece 1231 and deforms it toward the inner wall of the conductive body 121, so that the second spring piece 1231 can elastically abut against the negative contact portion 23 of the female connector 22. The second spring piece 1231 can be connected to the conductive body 121 by an integral molding process. For example, it can be formed by stamping, bending, etc., which not only ensures the connection strength with the conductive body 121, but also ensures that it has a stable elastic recovery ability, avoiding elastic failure after long-term use. The protrusion height and bending angle of the second spring 1231 can be adapted to the size of the coaxial connector 20 and the position of the negative contact 23 to ensure that it can be effectively compressed after assembly and generate sufficient rebound force.

[0062] The first spring 1221 and the second spring 1231 are positioned at both ends of the conductive body 121 in a manner that allows them to be adapted to the positions of the negative contact portions 23 of the male connector 21 and the female connector 22 after insertion.

[0063] During the process of fixing the insulating shell 11, the insulating shell 11 is fitted onto and presses against the conductive element 12, causing the first spring piece 1221 and the second spring piece 1231 to be radially compressed. At this time, the spring pieces generate a continuous rebound force, which acts directly on the negative contact portion 23 of the male connector 21 and the female connector 22, keeping them in a pressed state to ensure tight contact and avoid contact gaps. In addition, when the coaxial connector 20 is subjected to continuous mechanical vibration or impact, the vibration may cause slight deformation of the connecting parts of the male connector 21, the female connector 22 and the locking device 10, or long-term wear of the contact parts. At this time, the elastic recovery ability of the first spring piece 1221 and the second spring piece 1231 will come into play, automatically compensating for the resulting gaps and maintaining the pressing effect on the negative contact portion 23, avoiding problems such as poor contact and contact resistance fluctuations caused by gaps. The first spring plate 1221 and the second spring plate 1231 possess a certain elastic deformation capability. When subjected to vibration and impact, they can absorb and dissipate some of the vibration energy through their own elastic deformation, reducing the transmission and impact of vibration on the entire connection structure and lowering the risk of connection loosening. Traditional rigid locking is prone to a decrease in locking force and connection loosening due to material creep and contact wear under long-term vibration environment. However, the spring plate elastic system in this design can actively adapt to the structural changes caused by vibration and continuously provide stable locking force and contact pressure, which is beneficial to improving the vibration resistance performance of the locking device 10.

[0064] The first spring 1221 and the second spring 1231 achieve elastic contact, which has a simple structure, simplifies the overall structure of the conductive component 12, and reduces the difficulty of processing and assembly. At the same time, after the spring is compressed, the contact area between the spring and the negative electrode contact part 23 increases, further reducing the contact resistance, ensuring the stability of signal transmission, and indirectly extending the service life of the entire coaxial connector 20 and locking device 10.

[0065] In some embodiments, the first elastic abutment portion 122 includes a plurality of first spring pieces 1221, which are distributed circumferentially around the coaxial connector 20; and / or, the second elastic abutment portion 123 includes a plurality of second spring pieces 1231, which are distributed circumferentially around the coaxial connector 20.

[0066] Multiple first spring contacts 1221 are distributed circumferentially along the coaxial connector 20. The number of multiple first spring contacts 1221 can be adapted to the specifications, diameter and force requirements of the coaxial connector 20.

[0067] In some examples, 3 to 6 first spring pieces 1221 can be set with uniformly spaced angles; for example, 3 first spring pieces 1221 are spaced at 120° intervals or 4 first spring pieces 1221 are spaced at 90° intervals, so that the first spring pieces 1221 are symmetrically distributed and local force concentration is avoided.

[0068] Multiple second springs 1231 are distributed circumferentially along the coaxial connector 20. The number of the multiple second springs 1231 can be adapted to the design according to the specifications, diameter and force requirements of the coaxial connector 20.

[0069] In some examples, 3 to 6 second springs 1231 can be set with uniformly spaced angles; for example, 3 second springs 1231 are spaced at 120° intervals or 4 second springs 1231 are spaced at 90° intervals, so that the second springs 1231 are symmetrically distributed and local force concentration is avoided.

[0070] Multiple first spring contacts 1221 elastically abut against the negative electrode contact portion 23 of the male connector 21. On the one hand, multiple radial pressures act on the negative electrode contact portion 23 of the male connector 21 from different circumferential points. Compared with the single-point force of a single first spring contact 1221, this greatly enhances the stability of the elastic abutment between the first spring contact 1221 and the negative electrode contact portion 23 of the male connector 21. This effectively avoids problems such as loose contact and insufficient contact area caused by uneven force on a single first spring contact 1221, and further ensures the stability of the redundant conductive path. On the other hand, due to unavoidable dimensional deviations during processing, the negative electrode contact portion 23 of the male connector 21 may have local micro-dents or gaps. Multiple circumferentially distributed first spring contacts 1221 can fill these micro-gaps through their respective rebound forces, ensuring that the first spring contact 1221 and the negative electrode contact portion 23 of the male connector 21 are tightly fitted throughout the entire process, thus improving the mechanical integrity of the elastic abutment. When vibration causes minor circumferential deformation or localized wear in the coaxial connector 20, multiple distributed first springs 1221 can compensate through their own elastic deformation, avoiding poor contact caused by the limited compensation range of a single first spring 1221. At the same time, multiple first springs 1221 can jointly absorb and dissipate vibration energy, further improving the vibration resistance of the device. This, combined with the dynamic compensation mechanism, further enhances the vibration resistance of the locking device 10.

[0071] Multiple second spring contacts 1231 elastically abut against the negative electrode contact portion 23 of the female connector 22. On the one hand, multiple radial pressures act on the negative electrode contact portion 23 of the female connector 22 from different circumferential points. Compared with the single-point force of a single second spring contact 1231, this greatly enhances the stability of the elastic abutment between the second spring contact 1231 and the negative electrode contact portion 23 of the female connector 22. This effectively avoids problems such as loose contact and insufficient contact area caused by uneven force on a single second spring contact 1231, and further ensures the stability of the redundant conductive path. On the other hand, due to unavoidable dimensional deviations during the manufacturing process, there may be local small depressions or gaps in the negative electrode contact portion 23 of the female connector 22. Multiple circumferentially distributed second spring contacts 1231 can fill these small gaps through their respective rebound forces, ensuring that the second spring contact 1231 and the negative electrode contact portion 23 of the female connector 22 are tightly fitted throughout the entire process, thus improving the mechanical integrity of the elastic abutment. When vibration causes minor circumferential deformation or localized wear in the coaxial connector 20, multiple distributed second springs 1231 can compensate through their own elastic deformation, avoiding poor contact caused by the limited compensation range of a single second spring 1231. At the same time, multiple second springs 1231 can jointly absorb and dissipate vibration energy, further improving the vibration resistance of the device. This, combined with the dynamic compensation mechanism, further enhances the vibration resistance of the locking device 10.

[0072] like Figures 3-6As shown, in some embodiments, the first spring 1221 and / or the second spring 1231 are arc-shaped springs, which have a first end and a second end. The first end is connected to the conductive body 121 and is closer to the axis of the insulating shell 11 than the second end.

[0073] Arc-shaped spring clips can refer to spring clip structures that are arc-shaped.

[0074] The two ends of the arc-shaped spring sheet are the first end and the second end, respectively. The first end is fixedly connected to the conductive body 121. The first end is closer to the axis of the insulating shell 11 than the second end, so that the second end protrudes from the inner wall of the conductive body 121. This allows the elastic deformation direction of the arc-shaped spring sheet to match the radial pressing requirements, thereby improving the accuracy and stability of the elastic contact.

[0075] The curved spring has a simple structure and can be directly formed from the conductive body 121 through basic processing techniques such as cutting and bending. It does not require complex mold customization, precision assembly or special forming treatment. Compared with irregularly shaped springs, it greatly reduces the processing difficulty and manufacturing cost. At the same time, it is easy to quickly adjust the curvature and size of the spring according to different specifications of coaxial connectors 20, which improves the adaptability and production efficiency of locking device 10.

[0076] The arc-shaped spring, with its arc-shaped configuration, possesses good elasticity and can undergo elastic deformation under radial pressure, effectively completing gap compensation and vibration energy absorption. When vibration causes minor circumferential deformation or localized wear in the coaxial connector 20, the arc-shaped spring can automatically compensate for the resulting gap through its own elastic deformation. At the same time, the elastic structure of the arc-shaped spring can absorb and dissipate some vibration energy, forming a synergistic effect with the dynamic compensation mechanism, further improving the vibration resistance of the locking device 10 and maintaining a stable contact effect in complex vibration environments.

[0077] like Figures 3-6 As shown, in some embodiments, the insulating housing 11 includes an insulating open ring portion 111 sleeved on the coaxial connector 20 and a locking portion 112 for locking the insulating open ring portion 111 to the coaxial connector 20. The engaging protrusion 13 is provided on the inner side of the insulating open ring portion 111. The conductive body 121 includes a conductive open ring portion 1211 provided on the inner side of the insulating open ring portion 111. The opening of the conductive open ring portion 1211 is disposed opposite to the opening of the insulating open ring portion 111. The first elastic abutment portion 122 and the second elastic abutment portion 123 are provided on the inner side of the conductive open ring portion 1211.

[0078] The insulating open ring 111 is the main part of the insulating housing 11. The insulating open ring 111 is an annular shape with an opening, adaptable to the cylindrical shape of the coaxial connector 20. The insulating open ring 111 is fitted onto the outside of the coaxial connector 20, and also provides a mounting carrier for the engaging protrusion 13 and the conductive open ring 1211. The open design of the insulating open ring 111 eliminates the need to insert the insulating housing 11 into the coaxial connector 20 from the end of the coaxial connector 20 during installation. The insulating open ring 111 can be quickly snapped into the corresponding position of the coaxial connector 20 by directly prying open the opening, greatly simplifying the installation operation of the locking device 10, eliminating the need for complex tools, and improving assembly efficiency.

[0079] The locking part 112 is a component that securely locks the insulating open ring part 111. The locking part 112 is integrally formed with or fixedly connected to the insulating open ring part 111. For example, it can be locked by bolt, snap-lock, or thread. When the insulating open ring part 111 is fitted onto the coaxial connector 20, by operating the locking part 112, the opening of the insulating open ring part 111 can be tightened, so that the insulating open ring part 111 fits tightly against the outside of the coaxial connector 20. This ensures that the engaging protrusion 13 accurately engages into the slot 211 of the male connector 21 and abuts against the locking pin 221 of the female connector 22. At the same time, it provides stable radial pressure to the inner conductive open ring part 1211, ensuring the subsequent elastic contact and locking effect.

[0080] The conductive open ring portion 1211 is the main body of the conductive body 121. The conductive open ring portion 1211 is an annular shape with an opening that is adapted to the insulating open ring portion 111. The conductive open ring portion 1211 is located inside the insulating open ring portion 111, and the outer dimensions of the conductive open ring portion 1211 match the inner dimensions of the insulating open ring portion 111. It is fixed by the wrapping of the insulating open ring portion 111 and the tightening force of the locking portion 112. The opening of the conductive opening ring 1211 is positioned opposite to the opening of the insulating opening ring 111, so that when the insulating opening ring 111 is pried open for installation, the conductive opening ring 1211 is simultaneously opened, facilitating the installation operation; at the same time, when the locking part 112 tightens the insulating opening ring 111, the conductive opening ring 1211 can be simultaneously subjected to uniform radial pressure, thereby enabling the first elastic abutment part 122 and the second elastic abutment part 123 to stably and elastically abut against the negative contact part 23 of the male connector 21 and the female connector 22.

[0081] The opening design of the insulating opening ring 111 allows the locking device 10 to be installed without disassembling the end components of the coaxial connector 20; simply prying open the opening completes the installation. This makes the installation operation simple and efficient, reducing the difficulty and time consumption of on-site assembly. Furthermore, the opening design of the conductive opening ring 1211 allows it to uniformly contract towards the center when subjected to radial pressure from the insulating opening ring 111, applying a 360° wrapping and uniform radial clamping force to the coaxial connector 20. Compared to localized force, this uniform force not only further enhances the locking stability of the locking device 10 but also effectively eliminates any small gaps that may exist in the coaxial connector 20 due to manufacturing tolerances, improving the mechanical integrity of the locking connection.

[0082] like Figures 3-6 As shown, in some embodiments, the conductive open ring portion 1211 includes a connecting portion 12112 and a plurality of conductive open ring segments 12111 sleeved on the coaxial connector 20. The plurality of conductive open ring segments 12111 are distributed at intervals along the axial direction of the coaxial connector 20. Adjacent conductive open ring segments 12111 are connected by the connecting portion 12112. The conductive open ring segment 12111 that is disposed opposite to the negative contact portion 23 of the male connector 21 is provided with a first elastic abutment portion 122. The conductive open ring segment 12111 that is disposed opposite to the negative contact portion 23 of the female connector 22 is provided with a second elastic abutment portion 123.

[0083] The conductive open ring portion 1211 adopts a multi-segment structure, comprising multiple conductive open ring segments 12111. Each conductive open ring segment 12111 is an open annulus adapted to the shape of the coaxial connector 20 and is fitted onto the outside of the coaxial connector 20. The multiple conductive open ring segments 12111 are spaced apart along the axial direction of the coaxial connector 20. The gap between two adjacent conductive open ring segments 12111 can accommodate protrusions, steps, or other structures that may exist on the outer shell of the male connector 21 and female connector 22. This spacing creates clearance space, preventing interference between the conductive open ring portion 1211 and these protruding structures. This ensures that the conductive open ring portion 1211 can tightly fit against the surface of the coaxial connector 20, while also ensuring that the first elastic abutment portion 122 and the second elastic abutment portion 123 can accurately align with their corresponding negative contact portion 23, avoiding poor contact due to structural interference.

[0084] Each conductive open ring segment 12111 retains an open structure, which is consistent with the opening direction of the overall conductive open ring 1211, ensuring that it can be pried open and fitted synchronously with the insulating open ring 111, without affecting the ease of installation.

[0085] In some examples, 2-4 conductive opening rings 1211 can be provided to ensure that they can correspond to the negative contact portion 23 of the male connector 21 and the female connector 22 respectively, while adapting to the structural gap between them.

[0086] For example, there are four conductive open ring sections 1211. The two conductive open ring sections 12111 near the male connector 21 are provided with a first elastic abutment portion 122, the conductive open ring section 12111 near the female connector 22 is provided with a second elastic abutment portion 123, and the last conductive open ring section 12111 is provided with a clearance hole 12113. The clearance hole 12113 is used to avoid the engaging protrusion 13, so that the conductive open ring section 12111 can fit and abut well with the outer shell of the male connector 21.

[0087] The connecting part 12112 is a component used to connect two adjacent conductive open ring segments 12111. The connecting part 12112 can be integrally formed with the conductive open ring segment 12111 or fixedly connected. The connecting part 12112 can be made of the same conductive material as the conductive open ring segment 12111 to ensure the consistency of the overall conductivity. The two adjacent conductive open ring segments 12111 are connected by the connecting part 12112, so that multiple conductive open ring segments 12111 form a complete conductive whole. This not only ensures the structural stability of each conductive open ring segment 12111 and avoids the displacement of a single ring segment, but also ensures that the first elastic abutment part 122 and the second elastic abutment part 123 form a complete conductive path through the connecting part 12112 and the conductive open ring segment 12111, thus ensuring the stable conduction of signal current.

[0088] Compared to the integrated conductive open ring 1211, the segmented structure is easier to manufacture. Each segment can be individually processed according to its dimensional requirements, eliminating the need for a complex overall mold and reducing material waste. Furthermore, the specifications of each conductive open ring segment 12111 can be flexibly adjusted to accommodate dimensional differences in different parts of the coaxial connector 20, avoiding material redundancy caused by the integrated structure's need to accommodate the largest size. Multiple axially spaced conductive open ring segments 12111 can apply uniform radial clamping force to different parts of the coaxial connector 20. Combined with the elastic action of the first elastic abutment part 122 and the second elastic abutment part 123, this further eliminates minor gaps caused by manufacturing tolerances. Simultaneously, under vibration, each conductive open ring segment 12111 can independently undergo minor deformation. The segmented structure offers greater flexibility in elastic contraction, better cooperating with the first spring piece 1221 and the second spring piece 1231 to absorb and dissipate vibration energy, further improving the device's vibration resistance and ensuring the stability of locking and signal transmission.

[0089] like Figures 3-6 As shown, in some embodiments, the locking part 112 includes a first connecting part 1121 and a second connecting part 1122 connected to each other, the first connecting part 1121 and the second connecting part 1122 being respectively connected to the two ends of the insulating open ring part 111 along the circumference of the coaxial connector 20.

[0090] The first connecting part 1121 and the second connecting part 1122 can refer to the end structure of the insulating open ring part 111. The separation and locking of the first connecting part 1121 and the second connecting part 1122 control the opening and closing state of the insulating open ring part 111.

[0091] The first connecting part 1121 and the second connecting part 1122 are a mating structure arranged opposite to each other. The first connecting part 1121 and the second connecting part 1122 can adopt ear-type, snap-on, or bolt-type structures, enabling stable connection and separation of the first connecting part 1121 and the second connecting part 1122, while possessing sufficient structural strength to withstand the tensile force during locking and prevent connection failure. The circumferential direction of the coaxial connector 20 can be referred to... Figure 5 The direction indicated by the middle arrow 'a'.

[0092] The two sides of the opening of the insulating open ring 111 are the two ends of the insulating open ring 111 in the circumferential direction. The first connecting part 1121 and the second connecting part 1122 are respectively connected to the two ends of the insulating open ring 111 in the circumferential direction of the coaxial connector 20. The first connecting part 1121 and the second connecting part 1122 can be integrally formed, welded, riveted or other processes with the insulating open ring 111.

[0093] When the locking device 10 is installed on the coaxial connector 20, separating the first connecting part 1121 and the second connecting part 1122 will simultaneously open the opening of the insulating opening ring 111. This is simple and convenient to operate without the need for complex tools. Compared with traditional closed shells or complex locking structures, it significantly reduces the installation difficulty of the insulating shell 11 and the coaxial connector 20, and is suitable for various field assembly scenarios. When the locking device 10 is locked on the coaxial connector 20, after the insulating opening ring 111 is fitted onto the coaxial connector 20 and adjusted into place, locking the first connecting part 1121 and the second connecting part 1122 will tighten the opening of the insulating opening ring 111, so that the insulating opening ring 111 fits tightly against the outside of the coaxial connector 20, thereby achieving a stable lock on the insulating shell 11. The entire operation process is simple and efficient, without the need for cumbersome procedures.

[0094] like Figures 3-6 As shown, in some embodiments, the first connecting portion 1121 and the second connecting portion 1122 are connected by fasteners.

[0095] Fasteners are components that enable the first connecting part 1121 and the second connecting part 1122 to be detachably locked. Fasteners can be bolts, screws, locking pins, etc.

[0096] During installation, after the insulating open ring 111 is in place, the fastener is passed through the corresponding mounting holes 11211 of the first connecting part 1121 and the second connecting part 1122, and the fastener is tightened to lock the two together, thereby causing the insulating open ring 111 to tighten and be fixed to the coaxial connector 20. When disassembling or adjusting, the fastener is loosened to separate the first connecting part 1121 and the second connecting part 1122, and the insulating open ring 111 is pried open. The operation process is simple and does not require complicated tools.

[0097] like Figures 7-9 As shown, in some embodiments, the locking part 112 includes a locking sleeve 1123, which is sleeved on the outside of the insulating open ring part 111 and locks the insulating open ring part 111.

[0098] The locking sleeve 1123 is an annular structure used to fit over the insulating open ring portion 111. The inner diameter of the locking sleeve 1123 matches the outer diameter of the insulating open ring portion 111, allowing the locking sleeve 1123 to be smoothly fitted over the insulating open ring portion 111 and to apply uniform radial pressure to the insulating open ring portion 111 after it is in place, thus achieving a locking effect. The locking sleeve 1123 can be made of a material with high insulation and mechanical strength. For example, the same material as the insulating open ring portion 111 can be used to ensure its own structural stability and to maintain the overall insulation performance of the insulating shell 11, avoiding interference with signal transmission.

[0099] During installation, first open the insulating open ring 111 and fit it into the corresponding position of the coaxial connector 20. After adjusting it into place, insert the locking sleeve 1123 from one end of the insulating open ring 111 until it is in place. The insulating open ring 111 is locked and fixed by the ring constraint force of the locking sleeve 1123. This method does not require fasteners, tools or complicated procedures. The insulating open ring 111 can be locked by inserting it into the locking sleeve 1123. The operation is efficient and convenient, and the difficulty of on-site assembly is greatly reduced. Furthermore, the locking method of the locking sleeve 1123, which wraps around the circumference, ensures that the insulating open ring 111 is subjected to uniform force in the circumference, thereby ensuring that the inner engaging protrusion 13 is accurately engaged in the male connector 21 slot 211 and abuts against the female connector 22 pin 221. At the same time, it provides stable and uniform radial pressure to the inner conductive open ring 1211, ensuring that the conductive open ring 1211 contracts uniformly and applies a 360° clamping force, further ensuring the locking stability, signal transmission stability and vibration resistance of the locking device 10.

[0100] like Figures 7-9 As shown, in some embodiments, the insulating open ring 111 is threaded into the locking sleeve 1123.

[0101] The outer side of the insulating open ring 111 is provided with an external thread, and the inner side of the locking sleeve 1123 is provided with an internal thread. The detachable connection is achieved by screwing the internal and external threads together. The thread specification can be designed to match the size of the insulating open ring 111 and the locking sleeve 1123.

[0102] In some examples, coarse or fine threads can be used for both internal and external threads to improve engagement smoothness and connection stability.

[0103] For example, fine-pitch threads are selected for both internal and external threads, as they have good self-locking properties.

[0104] During assembly, after the insulating open ring 111 is fitted onto the coaxial connector 20 and adjusted into place, simply align the locking sleeve 1123 with the insulating open ring 111 and rotate the locking sleeve 1123 to achieve thread engagement. No complex tools are needed; once engaged, locking is complete. For disassembly, simply rotate the locking sleeve 1123 in the opposite direction to separate the parts. The operation is simple and efficient. Furthermore, the threaded connection provides mechanical gain. Compared to simple snap-fit ​​or cable tie connections, its helical structure allows operators to generate a large axial locking force with a small rotational torque, ensuring that the insulating open ring 111 is tightly clamped to the outside of the coaxial connector 20, further enhancing the stability of the lock. The threaded connection has excellent self-locking characteristics, effectively preventing the locking sleeve 1123 from loosening in a vibration environment. This avoids loosening of the insulating open ring 111 and locking failure due to vibration, thus improving the vibration resistance of the coaxial connector 20. Furthermore, this threaded connection is an active and adjustable fastening method, rather than a passive wrapping type of locking: the operator can adjust the locking force by controlling the engagement depth of the locking sleeve 1123, adapting to the locking needs of different specifications of coaxial connectors 20 or different vibration environments, offering greater flexibility; while buckles, cable ties, and other connection methods are mostly passive wrapping, with fixed and non-adjustable locking forces, making them difficult to adapt to the needs of complex scenarios. This active and adjustable feature, together with the uniform clamping force of the conductive open ring 1211 and the dynamic compensation mechanism of the first elastic abutment part 122 and the second elastic abutment part 123, further ensures the locking reliability and adaptability of the locking device 10.

[0105] In some embodiments, a nylon coating, nylon patch, or anti-loosening adhesive is provided between the locking sleeve 1123 and the insulating open ring 111.

[0106] The nylon coating can be applied to the internal thread surface of the locking sleeve 1123 or the external thread surface of the insulating open ring 111 through processes such as spraying or dipping. The coating thickness can be designed to be adapted to the thread specifications to ensure that it does not affect the smoothness of thread engagement. The nylon patch is a thin sheet structure that can be fixed to the threaded mating surface by adhesive. Its size is adapted to the thread profile and fits into the thread gap. The nylon material has good elasticity and friction, which can increase the frictional resistance of the threaded mating surface, fill the thread gap, and prevent the threaded pair from undergoing slight displacement due to vibration.

[0107] Anti-loosening adhesive is a colloid with adhesive and curing properties. It can be applied to the threaded surface, cured after screwing, filling the thread gap and forming an adhesive constraint. After curing, the anti-loosening adhesive can firmly bond the threaded pair, forming a rigid constraint and reducing the possibility of loosening under vibration. Anti-loosening adhesives can be anaerobic, pre-coated, or resistant to high and low temperatures.

[0108] The threaded connection itself already possesses good self-locking properties, which can initially prevent self-loosening under vibration. The addition of nylon coating, nylon patches, or anti-loosening adhesive further enhances the anti-loosening effect of the locking sleeve 1123 and the insulating open ring 111, improving the vibration resistance of the coaxial connector 20. In addition, the threaded fastening anti-loosening structure is a mechanical vibration protection mechanism, which constrains the coaxial connector 20 through a continuous and stable locking force to prevent overall loosening; the elastic abutment is an elastic vibration protection mechanism, which absorbs vibration energy and compensates for gaps through the dynamic compensation of the first elastic abutment part 122 and the second elastic abutment part 123, forming a dual vibration protection system of mechanical and elastic. The two work together to effectively improve the vibration resistance reliability of the locking device 10.

[0109] like Figures 7-9 As shown, in some embodiments, the inner side of the locking sleeve 1123 is provided with an annular protrusion 1124, and a sealing ring 14 is sandwiched between the insulating opening ring 111 and the annular protrusion 1124.

[0110] The annular protrusion 1124 is a protruding structure on the inner side of the locking sleeve 1123. The annular protrusion 1124 is annular and coaxial with the locking sleeve 1123. The annular protrusion 1124 is integrally formed on the inner side of the locking sleeve 1123.

[0111] The sealing ring 14 is a component sandwiched between the insulating open ring portion 111 and the annular protrusion 1124. The sealing ring 14 can be made of a material with excellent elasticity and sealing performance; for example, nitrile rubber, silicone rubber, fluororubber, etc., can be used. The sealing ring 14 is an O-ring. Additionally, the end of the locking sleeve 1123 facing away from the insulating open ring portion 111 can provide support and guidance for the cable sheath.

[0112] When the locking sleeve 1123 and the insulating open ring 111 are screwed together and locked, the insulating open ring 111 moves toward the annular protrusion 1124 and squeezes the sealing ring 14, causing the sealing ring 14 to be axially compressed, generating a continuous axial rebound force, i.e., axial preload. On the one hand, the sealing ring 14 can form a physical sealing barrier, which can effectively prevent the intrusion of external media. The axial preload generated by the compressed sealing ring 14 continuously acts on the threaded pair, forming a passive mechanical anti-loosening effect, enhancing the stability of the entire coaxial connector 20 in a vibration environment.

[0113] In some embodiments, the engaging protrusion 13 is provided on the inner side of the conductive opening ring portion 1211.

[0114] like Figure 2 and Figure 5 As shown, in some embodiments, the inner side of the insulating opening ring portion 111 is provided with an engagement groove 1111 for engaging with the male connector 21.

[0115] The engaging groove 1111 is a groove structure formed inside the insulating open ring portion 111. The engaging groove 1111 can be arranged along the circumference of the insulating open ring portion 111, or it can be set as one or more according to the distribution of the protruding structures (such as retaining rings, bosses, etc.) on the outside of the male connector 21.

[0116] The inner side of the insulating open ring 111 is provided with a locking groove 1111 that engages with the protruding structure on the outer side of the male connector 21, which can realize the axial fixation of the locking device 10, thereby improving the reliability of the connection between the locking device 10 and the coaxial connector 20.

[0117] Once the insulating open ring 111 is fitted onto the outside of the coaxial connector 20 and adjusted into position, the protruding structure of the male connector 21 engages with the locking groove 1111, forming an axial mechanical stop. This engagement restricts the axial movement of the insulating open ring 111 along the coaxial connector 20, preventing relative displacement between the locking device 10 and the coaxial connector 20 due to vibration or external pulling, effectively solving the problem of easy axial loosening of the traditional locking device 10. The locking groove 1111 engages with the protruding structure of the male connector 21, while the engaging protrusion 13 cooperates with the locking groove 211 of the male connector 21 and the locking pin 221 of the female connector 22, forming a synergistic effect. This constrains the relative position of the locking device 10 and the coaxial connector 20 from multiple dimensions, including circumferential and axial directions, ensuring a stable integrated structure. Compared to the fixing method that relies solely on radial compression, axial locking further enhances the overall stability of the connection. Even in environments with strong vibrations, it can effectively prevent the locking device 10 from falling off or shifting, ensuring the continuity and reliability of signal transmission.

[0118] In some embodiments, the locking device 10 can achieve a fastening mechanism that combines axial threaded locking, circumferential locking to prevent rotation, and radial elastic conductivity. This mechanism provides axial clamping force through the threaded pair of the locking sleeve 1123 and the insulating open ring 111, achieves circumferential anti-rotation through the engagement of the engaging protrusion 13 with the slot 211 and the locking pin 221, and maintains contact pressure through the radial elastic deformation of the conductive element 12. These three actions occur simultaneously and reinforce each other, ensuring the mechanical and electrical stability of the connection from multiple dimensions. When the locking sleeve 1123 is locked, the sealing ring 14 is compressed between the annular protrusion 1124 and the insulating open ring 111, forming a physical sealing barrier that effectively prevents the intrusion of external media. Simultaneously, the axial rebound force generated by the compressed sealing ring 14 continuously acts on the threaded pair, creating a passive mechanical anti-loosening effect and enhancing the stability of the entire assembly under vibration. The locking device 10 can form a multi-layered vibration-resistant design system. The first level of this system consists of an arc-shaped sealing ring 14 formed by the conductive element 12, used to absorb high-frequency micro-vibrations and compensate for gaps; the second level is the mechanical self-locking of the threaded pair; the third level is the interface pre-tightening force provided by the sealing ring 14; and the fourth level is the molecular-level adhesion provided by the optional anti-loosening adhesive. These four levels of defense, from the surface to the core, from the macro to the micro, together constitute a deep defense strategy against complex vibration environments. The locking device 10 is independent of the coaxial connector 20. The locking device 10 integrates multiple functions such as mechanical fastening, circumferential anti-rotation, electrical reinforcement, external insulation, and environmental sealing into a compact unit. This design allows for the simultaneous enhancement of all functions by installing this single device without any modifications to the existing coaxial connector 20, achieving a plug-and-play, one-step effect.

[0119] In some embodiments, the locking device 10 successfully integrates multiple functions such as axial thread fastening, circumferential anti-rotation, radial elastic conductivity, and interface sealing to prevent loosening, fundamentally solving the industry problems of traditional coaxial connectors 20 being prone to loosening, poor contact, and cumbersome insulation protection in vibration environments. This solution not only significantly improves the stability and reliability of signal transmission through a newly added low-impedance parallel negative electrode path, but also achieves ready-to-use insulation and sealing effects with a one-step installation operation, eliminating the need for additional processes such as heat shrink tubing. It provides a revolutionary, standardized connection reinforcement solution with ultra-high environmental adaptability for stable RF signal transmission in high-end equipment fields such as automotive, military, and aerospace.

[0120] In some embodiments, the conductive element 12 is a silver-plated beryllium copper element.

[0121] Silver-plated beryllium copper parts refer to components where the base material of conductive part 12 is beryllium copper, and a layer of silver is coated on the surface of the base material through an electroplating process. Silver-plated beryllium copper parts combine the excellent mechanical properties of beryllium copper with the excellent electrical conductivity of silver.

[0122] Beryllium copper is used as the base material for the conductive component 12. Beryllium copper possesses excellent elasticity, mechanical strength, and wear resistance, making it suitable for the elastic contact requirements of the conductive component 12. The first elastic contact portion 122 and the second elastic contact portion 123 need to withstand radial compression and rebound for a long time. The high elasticity of beryllium copper ensures that the first elastic contact portion 122 and the second elastic contact portion 123 do not experience elastic failure after long-term use, and always maintain a stable rebound force to achieve dynamic gap compensation. Its high mechanical strength and wear resistance can withstand repeated friction and deformation under vibration environment, avoiding wear and deformation of the first elastic contact portion 122, the second elastic contact portion 123, and the conductive open ring portion 1211, thus extending the service life of the conductive component 12 and meeting the design requirements of vibration resistance and long-term stable operation of the device.

[0123] The silver plating layer on the substrate surface is made of silver, which is one of the metals with the best conductivity. The silver plating layer can significantly improve the conductivity of the conductive component 12, reduce energy loss during signal transmission, and is especially suitable for high-frequency signal transmission scenarios. It can effectively reduce signal noise and further ensure the stability of signal transmission. At the same time, the silver layer has good anti-oxidation and anti-corrosion properties, which can prevent the beryllium copper substrate from being oxidized and corroded during long-term use, and avoid poor contact caused by increased contact resistance.

[0124] In some embodiments, the coaxial connection assembly includes a coaxial connector 20 and the locking device 10 described above. The coaxial connector 20 includes a male connector 21 and a female connector 22. The female connector 22 and the male connector 21 are inserted into each other. The locking pin 221 of the female connector 22 is engaged in the locking groove 211 of the male connector 21. The insulating shell 11 is sleeved on the outside of the coaxial connector 20. The engaging protrusion 13 is engaged in the locking groove 211 and abuts against the locking pin 221. The first elastic abutting part 122 elastically abuts against the negative contact part 23 of the male connector 21, and the second elastic abutting part 123 elastically abuts against the negative contact part 23 of the female connector 22.

[0125] By adopting the technical solution of this embodiment, the locking device 10 can play the roles of circumferential anti-rotation, radial elastic conductivity and insulation for the coaxial connector 20, which can effectively improve the reliability of the electrical connection of the coaxial connector 20.

Claims

1. A locking device for locking a coaxial connector, the coaxial connector comprising a male connector and a female connector that are mated together, characterized in that, The locking device includes: An insulating housing for fitting onto the coaxial connector; A conductive element is disposed on the inner side of the insulating housing and used to clamp between the insulating housing and the coaxial connector. The conductive element includes a conductive body and a first elastic abutment portion and a second elastic abutment portion connected to the conductive body. The first elastic abutment portion is used to elastically abut against the negative contact portion of the male connector, and the second elastic abutment portion is used to elastically abut against the negative contact portion of the female connector. The inner side of the conductive body and / or the inner side of the insulating housing is provided with a locking protrusion, which is used to engage with the locking groove of the male connector and to abut against the locking pin of the female connector.

2. The locking device of claim 1, wherein: The first elastic abutment portion includes a first spring piece disposed at one end of the conductive body and protruding from the inner wall of the conductive body, and the second elastic abutment portion includes a second spring piece disposed at the other end of the conductive body and protruding from the inner wall of the conductive body.

3. The locking device of claim 2, wherein: The first elastic abutment portion includes a plurality of first spring pieces, which are distributed circumferentially around the coaxial connector; and / or, the second elastic abutment portion includes a plurality of second spring pieces, which are distributed circumferentially around the coaxial connector.

4. The locking device according to claim 2, characterized in that: The first spring and / or the second spring are arc-shaped springs, each having a first end and a second end. The first end is connected to the conductive body and is closer to the axis of the insulating shell than the second end.

5. The locking device according to any one of claims 1 to 4, characterized in that: The insulating housing includes an insulating open ring portion fitted onto the coaxial connector and a locking portion for locking the insulating open ring portion onto the coaxial connector. The engaging protrusion is located on the inner side of the insulating open ring portion. The conductive body includes a conductive open ring portion located on the inner side of the insulating open ring portion. The opening of the conductive open ring portion is opposite to the opening of the insulating open ring portion. The first elastic abutment portion and the second elastic abutment portion are located on the inner side of the conductive open ring portion.

6. The locking device of claim 5, wherein: The conductive open ring portion includes a connecting portion and a plurality of conductive open ring segments sleeved on the coaxial connector. The plurality of conductive open ring segments are distributed at intervals along the axial direction of the coaxial connector. Adjacent conductive open ring segments are connected through the connecting portion. The conductive open ring segment opposite to the negative contact portion of the male connector is provided with a first elastic abutment portion, and the conductive open ring segment opposite to the negative contact portion of the female connector is provided with a second elastic abutment portion.

7. The locking device of claim 5, wherein: The locking part includes a first connecting part and a second connecting part connected to each other, and the first connecting part and the second connecting part are respectively connected to the two ends of the insulating open ring part along the circumference of the coaxial connector.

8. The locking device of claim 7, wherein: The first connecting part and the second connecting part are connected by fasteners.

9. The locking device according to claim 5, characterized in that: The locking part includes a locking sleeve, which is sleeved outside the insulating open ring and locks the insulating open ring.

10. The locking device according to claim 9, characterized in that: The insulating open ring is threaded into the locking sleeve body.

11. The locking device according to claim 10, characterized in that: A nylon coating, nylon patch, or anti-loosening adhesive is provided between the locking sleeve and the insulating open ring.

12. The locking device according to claim 10, characterized in that: The inner side of the locking sleeve is provided with an annular protrusion, and a sealing ring is held between the insulating open ring and the annular protrusion.

13. The locking device according to claim 5, characterized in that: The inner side of the insulating open ring is provided with a locking groove for engaging with the male connector.

14. The locking device according to any one of claims 1 to 4, characterized in that: The conductive component is a silver-plated beryllium copper component.

15. A coaxial connection assembly, characterized in that, The device includes a coaxial connector and a locking device according to any one of claims 1 to 14. The coaxial connector includes a male connector and a female connector, the female connector and the male connector being inserted into each other. The locking pin of the female connector is engaged in the locking groove of the male connector. The insulating shell is sleeved on the outside of the coaxial connector. The locking protrusion is engaged in the locking groove and abuts against the locking pin. The first elastic abutting part elastically abuts against the negative contact part of the male connector, and the second elastic abutting part elastically abuts against the negative contact part of the female connector.

Images