Coaxial cable adapter structure for low frequency wire

Abstract

This utility model relates to a switching structure for coaxial cable to low-frequency conductors, comprising a switching component, a coaxial cable, and two low-frequency conductors. The switching component includes an outer conductor and an inner conductor disposed within the outer conductor, with an insulator between the outer and inner conductors. The outer periphery of the outer conductor is fixedly connected to the shielding layer of the coaxial cable, and the outer periphery of its front end is connected and conductively connected to one of the low-frequency conductors. The tail of the inner conductor is connected and conductively connected to the core of the coaxial cable, and the front end is connected and conductively connected to the other low-frequency conductor. This utility model switching structure features small size, simple operation, and high consistency and reliability in switching processes.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable accessories products, specifically relating to a coaxial cable to low-frequency conductor conversion structure. Background Technology

[0002] In the design and manufacturing of cable assemblies, some signals (such as the three primary color signals in VGA signals) are connected to coaxial cables using low-frequency connectors to ensure optimal transmission. There are two main conventional methods for handling this, detailed below:

[0003] Method 1: For example Figure 1 As shown, the coaxial cable core is directly connected to the low-frequency connector hole, and the shielding layer is pulled out and then heat-shrinked for insulation before being connected to the low-frequency connector hole. However, this method has high requirements for processing space and skilled workers, and the product processing consistency is poor. During use, the coaxial cable is easily subjected to bending stress, which can transfer the force to the conductor and the contact connector, posing a risk of breakage.

[0004] Method 2: For example Figure 2 As shown, the coaxial cable core and shield are spliced ​​together to form a low-frequency conductor, which is then connected to the low-frequency port of the connector. However, this method results in a longer and thicker splice section, requiring more space and a longer distance between the core and shield, which significantly impacts signal transmission quality. Summary of the Invention

[0005] The purpose of this invention is to provide a novel coaxial cable to low-frequency conductor switching structure, which not only enables rapid switching between coaxial cables and low-frequency conductors, but also features simple operation, reliable connection and installation, and minimal impact on signal transmission quality.

[0006] The purpose of this utility model and the technical problem it solves are achieved by the following technical solution. According to this utility model, a coaxial cable to low-frequency conductor conversion structure includes a conversion component, a coaxial cable 1, and two low-frequency conductors 6. The conversion component includes an outer conductor 9 and an inner conductor 8 disposed within the outer conductor 9. An insulator 10 is also provided between the outer conductor 9 and the inner conductor 8. The outer periphery of the tail of the outer conductor 9 is crimped and fixed to the shielding layer 3 of the coaxial cable 1, and the outer periphery of the front end is connected and conductive to one of the low-frequency conductors 6. The tail of the inner conductor 8 is connected and conductive to the core 2 of the coaxial cable 1, and the front end is connected and conductive to the other low-frequency conductor 6.

[0007] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0008] The aforementioned coaxial cable to low-frequency conductor adapter structure also includes a heat shrink tubing 5, which at least covers the adapter component and the incomplete portion of the low-frequency conductor 6 and the outer sheath of the coaxial cable 1.

[0009] In the aforementioned coaxial cable to low-frequency conductor conversion structure, the tail of the inner conductor 8 is crimped and fixed to the core 2 of the coaxial cable 1.

[0010] In the aforementioned coaxial cable to low-frequency conductor conversion structure, during wire crimping, the inner conductor 8 can move axially backward relative to the outer conductor 9 until the tail of the inner conductor 9 extends out.

[0011] In the aforementioned coaxial cable to low-frequency conductor conversion structure, the outer conductor 9 is provided with a limiting structure for restricting the axial forward movement of the insulator 10, and the insulator 10 is provided with a limiting structure for restricting the axial forward movement of the inner conductor 8. When both the insulator 10 and the inner conductor 8 move forward to the position where they are blocked and limited, the front end of the inner conductor 8 extends out of the insulator 10 and the outer conductor 9.

[0012] In the aforementioned coaxial cable to low-frequency conductor adapter structure, the inner conductor 8 is welded and fixed to the low-frequency conductor through its front end solder cup.

[0013] In the aforementioned coaxial cable to low-frequency conductor conversion structure, when the outer conductor 9 is connected and fixed to the shielding layer 3 of the coaxial cable 1, the exposed insulation layer 4 at the front end of the coaxial cable 1 enters the cavity at the tail end of the outer conductor 9 and axially compresses the insulator 10 and the inner conductor 8. At this time, the forward movement of the insulator 10 and the inner conductor 8 is also limited by the corresponding limiting structure.

[0014] In the aforementioned coaxial cable to low-frequency conductor transfer structure, the insulation layer 4 axially compresses the insulator 10 and the inner conductor 8 through the insulating sheet 11.

[0015] In the aforementioned coaxial cable to low-frequency conductor conversion structure, the tail of the outer conductor 9 is fixed to the shielding layer 3 of the coaxial cable 1 by a wire pressing structure, and the front end is wound and welded to the low-frequency conductor 6.

[0016] In the aforementioned coaxial cable to low-frequency conductor conversion structure, the outer conductor 9 is further provided with several grooves 91 on its outer periphery to enhance the reliability of the crimping between it and the shielding layer 3.

[0017] In the aforementioned coaxial cable to low-frequency conductor adapter structure, the low-frequency conductor is wound and welded inside the annular groove 92 on the front end of the outer conductor 9.

[0018] Compared with the prior art, this utility model has significant advantages and beneficial effects. Through the above technical solution, this utility model achieves considerable technological advancement and practicality, and has broad industrial application value. It possesses at least the following advantages:

[0019] The adapter component of this utility model is connected at one end by a coaxial cable and a coaxial connector, and at the other end can be directly connected to a low-frequency conductor. The internal structure of the adapter component ensures the stability of the conductors on both sides when subjected to force through structural design.

[0020] This utility model improves upon the traditional manual wire soldering process by replacing it with a more practical and user-friendly adapter component, ensuring consistency and reliability in the adapter process. The compact adapter, with crimping and welding on both sides, solves the problem of incomplete soldering that may be caused by secondary welding. The adapter component can be designed with impedance matching according to signal requirements, effectively ensuring the quality of signal transmission. Attached Figure Description

[0021] Figure 1 This refers to the existing connection method between coaxial cables and low-frequency conductors;

[0022] Figure 2 This is another existing method of connecting a coaxial cable to a low-frequency conductor;

[0023] Figure 3 This is a schematic diagram illustrating the use of the coaxial cable to low-frequency conductor adapter structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure for the coaxial cable to low-frequency conductor of this utility model.

[0025] [Explanation of Key Component Symbols]

[0026] 1: Coaxial cable

[0027] 2: Wire core

[0028] 3: Shielding layer

[0029] 4: Insulation layer

[0030] 5: Heat shrink tubing

[0031] 6: Low-frequency conductors

[0032] 7: Cable clamp

[0033] 8: Inner conductor

[0034] 81: Wire clamping hole

[0035] 9: External conductor

[0036] 91: Groove

[0037] 10: Insulators

[0038] 11: Insulating sheet

[0039] 12: Welding position

[0040] 13: Wrap welding position Detailed Implementation

[0041] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended purpose of the invention, the following describes in detail the specific implementation, structure, features and effects of the coaxial cable to low frequency conductor adapter structure proposed according to this utility model, in conjunction with the accompanying drawings and preferred embodiments.

[0042] Please see Figure 3 and Figure 4 This is a schematic diagram of the various parts of the conversion structure of the coaxial cable to low-frequency conductor of this utility model. The conversion structure includes a conversion component, a coaxial cable 1 and two low-frequency conductors 6. One end of the conversion component is connected to the coaxial cable 1 and the other end is connected to the two low-frequency conductors 6, so that one of the low-frequency conductors 6 is connected to the shielding layer of the coaxial cable 1 and the other low-frequency conductor is connected to the core 2 of the coaxial cable 1.

[0043] The adapter includes a cylindrical outer conductor 9, within which an inner conductor 8 is housed. An insulator 10 is provided between the outer conductor 9 and the inner conductor 8 to prevent signal interaction between them. The shielding layer 3 of the coaxial cable 1 is stripped and fitted onto the outer periphery of the outer conductor 9, and fixed to the outer periphery of the outer conductor 9 by a wire clamping structure. In this embodiment, the wire clamping structure is a wire clip 7, but it is not limited to this. To enhance the reliability of the crimping between the shielding layer 3 and the outer conductor 9 on the coaxial cable 1, the outer periphery of the outer conductor 9 is also provided with several circumferentially extending and axially spaced grooves 91.

[0044] The core 2 of the coaxial cable 1 is connected to the tail of the inner conductor 8. In this embodiment, the core 2 is crimped and fixed to the tail of the inner conductor 8. The inner conductor 8 can slide axially backward relative to the outer conductor 9, so that the crimping hole 81 at its tail can extend from the tail of the outer conductor 9 and achieve the crimping operation with the core 2.

[0045] The outer conductor 9 also includes a stop structure to limit the axial forward movement of the inner conductor 8. Specifically, both the inner conductor 8 and the insulator 10 enter the cavity of the outer conductor 9 from its tail end. Both the inner conductor 8 and the insulator 10 have a stepped axial structure with a smaller front diameter and a larger rear diameter, and the transition between the small-diameter section at the front end and the large-diameter section at the rear end forms a forward-facing stepped surface. The outer conductor 9 has a stepped cavity with a smaller front diameter and a larger rear diameter, within which a backward-facing stepped surface is formed. The insulator 10 achieves axial forward stopping by engaging with the stepped surface inside the outer conductor 9 through the stepped surface at its front end. The insulator 10 also has a stepped through-hole with a smaller front diameter and a larger rear diameter. The inner conductor 8 is slidably disposed within this through-hole and is axially stopped and limited by the stepped surface inside the through-hole through its forward-facing stepped surface at its front end.

[0046] When the core 2 and shielding layer 3 of the coaxial cable 1 are both connected to the adapter, the insulation layer 4 located behind the stripped core 2 on the coaxial cable 1 is located in the cavity at the tail of the outer conductor 9 and can axially stop and limit the inner conductor 8 and the insulator 10.

[0047] An insulating sheet 11 is also provided inside the outer conductor 9. The insulating sheet 11 is located between the front end face of the insulation layer 4 of the coaxial cable 1, the inner conductor 8, and the insulator 11. Specifically, the front end of the core 2 is crimped to the tail end of the inner conductor 8, and the outer periphery of the rear end is covered with an insulating sheet 11. The outer periphery of the insulating sheet 11 is a stepped shaft shape with a smaller front and a larger rear. Under the push of the front end face of the insulation layer 4 of the coaxial cable 1, the small-diameter end of the front end of the insulating sheet is inserted into the insulator 10 and axially presses the tail end face of the inner conductor 8, so that the inner conductor 8 is axially blocked forward by the insulator 10. The front end face of the large-diameter end of the rear end axially presses the tail end face of the insulator 10, so that the insulator 10 is axially blocked by the outer conductor 9.

[0048] The inner conductor 8 extends beyond the insulator 10 and is connected to one of the low-frequency conductors 6 for conduction. Preferably, the outer conductor 9 also extends beyond the insulator 10, but this is not a limitation. The outer periphery of the front end of the outer conductor 9 contacts and conducts with the core of the other low-frequency conductor 6. In this embodiment, the front end of the inner conductor 8 is welded and fixed to the core of the low-frequency conductor 6, and the outer periphery of the front end of the outer conductor 9 is wound and welded to the core of the other low-frequency conductor.

[0049] In this embodiment, an annular groove 92 is provided on the outer periphery of the front end of the outer conductor 9. The core of the low-frequency conductor 6 is wound and welded within this annular groove 92. The annular groove 92 effectively enhances the reliability of the low-frequency conductor winding and welding. The annular groove 92 is formed by a first annular protrusion 93 and a second annular protrusion 94, which are spaced apart from front to back on the outer periphery of the front end of the outer conductor 9. The front wall of the annular groove 92 is a vertical surface, and the rear wall is an inclined surface that gradually rises from front to back. The rear surface of the second annular protrusion 94 is an inclined surface that gradually descends from front to back.

[0050] The adapter structure of this utility model also includes a heat shrink tubing 5, which at least covers the adapter component, the low-frequency conductors 6, and the stripped portion of the coaxial cable 1. In this embodiment, the axes of the two low-frequency conductors 6, the coaxial cable 1, and the adapter component are in the same direction, all extending in the left-right direction. The left end of the heat shrink tubing 5 extends to the unstripped portion of the two low-frequency conductors 6, and the right end extends to the unstripped portion of the coaxial cable 1, so that the adapter structure of this utility model is reliably insulated and protected by the heat shrink tubing 5 after the coaxial cable 1 and the two low-frequency conductors are connected.

[0051] The adapter component of this utility model is small in size. Furthermore, the adapter structure uses crimping at one end and welding at the other to avoid the possibility of melting and causing a cold solder joint when both ends are welded, which can occur with secondary welding. The crimping of the outer conductor 9 to the shielding layer of the coaxial cable 1 is achieved by clamping the outer circumference of the outer conductor 9 with clamp 7. The crimping of the inner conductor 8 to the core 2 of the coaxial cable 1 is achieved by moving the inner conductor 8 so that its tail extends beyond the outer conductor 9, and then performing the crimping operation outside the outer conductor 9. After crimping, the inner conductor 8 is moved forward again, simplifying the process and providing ample operating space. At the low-frequency conductor end, the inner conductor uses a solder cup design, and the outer conductor uses a wound welding method, simplifying the welding operation and allowing it to be performed in an open space. In addition, the adapter component uses a stepped fit internally to achieve axial limiting, preventing stress on one end of the cable or conductor from affecting the other end. The internal structure can also be adjusted using impedance matching formulas to match impedance for different signal transmissions.

[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A transition structure for transitioning a coaxial cable to low frequency conductors, comprising a transition component, a coaxial cable, and two low frequency conductors, characterized by: The adapter includes an outer conductor and an inner conductor disposed within the outer conductor, with an insulator between the outer conductor and the inner conductor; the outer periphery of the tail of the outer conductor is fixedly connected to the shielding layer of the coaxial cable, and the outer periphery of the front end is connected to one of the low-frequency wires for conduction; the tail of the inner conductor is connected to the core of the coaxial cable for conduction, and the front end is connected to another low-frequency wire for conduction.

2. The adapter structure for coaxial cable to low-frequency conductor according to claim 1, characterized in that: It also includes heat shrink tubing that at least covers the adapter components and any incomplete portions of the low-frequency conductors and coaxial cable sheaths.

3. The adapter structure for coaxial cable to low-frequency conductor according to claim 2, characterized in that: The tail of the inner conductor is crimped and fixed to the core of the coaxial cable.

4. The adapter structure for coaxial cable to low-frequency conductor according to claim 3, characterized in that: During the wire pressing process, the inner conductor can move axially backward relative to the outer conductor until the tail of the inner conductor extends out.

5. The adapter structure for coaxial cable to low-frequency conductor according to claim 4, characterized in that: The outer conductor is provided with a limiting structure for restricting the axial forward movement of the insulator, and the insulator is provided with a limiting structure for restricting the axial forward movement of the inner conductor. When both the insulator and the inner conductor move forward to the position where they are blocked and limited, the front end of the inner conductor extends out of the insulator and the outer conductor.

6. The adapter structure for coaxial cable to low-frequency conductor according to claim 5, characterized in that: The inner conductor is fixed to the low-frequency conductor by welding it to its front end cup.

7. The adapter structure for coaxial cable to low-frequency conductor according to claim 5, characterized in that: When the outer conductor is connected and fixed to the shielding layer of the coaxial cable, the exposed insulation layer at the front end of the coaxial cable enters the cavity at the tail end of the outer conductor and axially compresses the insulator and inner conductor. At this time, the forward movement of the insulator and inner conductor is also limited by the corresponding limiting structure.

8. The adapter structure for coaxial cable to low-frequency conductor according to claim 7, characterized in that: The insulating layer axially presses the insulator and inner conductor together through the insulating sheet.

9. The adapter structure for coaxial cable to low-frequency conductor according to any one of claims 1-8, characterized in that: The tail of the outer conductor is crimped and fixed to the shielding layer of the coaxial cable through a crimping structure, and the front end is wound and welded to the low-frequency conductor.

10. The adapter structure for coaxial cable to low-frequency conductor according to claim 9, characterized in that: The outer conductor is also provided with several grooves on its outer periphery to enhance the reliability of the crimping between it and the shielding layer.

11. The adapter structure for coaxial cable to low-frequency conductor according to claim 9, characterized in that: The low-frequency wire is wound and welded into the annular groove at the front end of the outer conductor.

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