A type of HDMI high-flexibility drag chain cable

Abstract

This utility model relates to the technical field of HDMI cables, and in particular to a high-flexibility HDMI drag chain cable. It includes a cable body comprising multiple conductors, multiple twisted pairs, a first aluminum foil layer covering the twisted pairs and conductors, a first braided layer covering the first aluminum foil layer, and an outer sheath covering the first braided layer. A filler layer is disposed within the first aluminum foil layer. Each twisted pair is covered with a second aluminum foil Mylar layer, and a second braided layer is covered on the second aluminum foil Mylar layer. This utility model features high bending strength, long service life, and stable connection.

Description

Technical Field

[0001] This utility model relates to the technical field of HDMI cables, and in particular to an HDMI high-flexibility drag chain cable. Background Technology

[0002] HDMI, also known as High Definition Multimedia Interface, is a fully digital video and audio transmission interface that can send uncompressed audio and video signals. HDMI can be used in devices such as set-top boxes, DVD players, personal computers, televisions, game consoles, integrated amplifiers, digital audio systems, and televisions. HDMI can transmit audio and video signals simultaneously, and because audio and video signals use the same cable, it greatly simplifies the installation of system wiring.

[0003] HDMI is widely used in machine tools, industrial robots, and other equipment. HDMI cables can be used to transmit audio or video signals. Machine tools and industrial robots typically have cable chains, which are used to install HDMI cables and other cables. The cables provide power and transmit signals, and the cable chain moves the cables together with the equipment during operation to prevent them from going astray. During operation, the cable chain moves multiple times, causing the cables to bend repeatedly. Current HDMI cables have insufficient bending strength and are prone to tearing and breaking after repeated bending, which can affect the operation of the equipment. Utility Model Content

[0004] To improve the bending strength of HDMI cables, this invention provides a highly flexible HDMI drag chain cable to address the problems in the prior art.

[0005] This utility model provides an HDMI high-flexibility cable, which adopts the following technical solution:

[0006] An HDMI high-flexibility drag chain cable includes a cable body, the cable body including multiple conductors, multiple twisted pairs, a first aluminum foil layer wrapped around the multiple twisted pairs and the multiple conductors, a first braided layer wrapped around the first aluminum foil layer, and an outer sheath wrapped around the braided layer. A filler layer is provided inside the first aluminum foil layer, and a second aluminum foil Mylar layer is wrapped around each of the twisted pairs. A second braided layer is wrapped around the second aluminum foil Mylar layer.

[0007] Preferably, the filling layer is bulky yarn.

[0008] Preferably, both the first braided layer and the second braided layer are made of aluminum-magnesium alloy.

[0009] Preferably, a ground wire is provided between the first braided layer and the first aluminum foil layer, and also within the second aluminum foil Mylar layer.

[0010] Preferably, the second aluminum foil Mylar layer contains multiple nylon filaments.

[0011] Preferably, the outer cover is made of nitrile PVC material.

[0012] Preferably, the outer cover has a high temperature resistance of 80°C and a hardness of 75A.

[0013] Preferably, both ends of the wire body are provided with connectors. Each connector includes a connector, an inner mold disposed on the connector, and an outer mold disposed on the inner mold. The connector is provided with multiple terminals, and the outer mold is provided with a fixing seat. The fixing seat is provided with a through hole along the insertion direction of the connector. A screw is inserted into the through hole. One end of the screw passes through the through hole, and the other end of the screw is provided with a limiting post. The limiting post abuts against the end face of the fixing seat.

[0014] Preferably, the circumferential surface of the fixed column is provided with multiple protruding ridges spaced circumferentially.

[0015] In summary, this utility model includes at least one of the following beneficial technical effects of HDMI high-flexibility cable:

[0016] The first and second braided layers enhance the strength of the wire body, making it more resistant to bending. It is less prone to breakage after repeated bending, and after more than ten million swing tests, no breakage occurred, resulting in a long service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the assembly relationship between the connector and the wire body in Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the connector structure in Embodiment 1 of this utility model.

[0020] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0021] Figure 5 This is a schematic diagram of the connector structure in Embodiment 2 of this utility model.

[0022] In the diagram: 1. Wire body; 11. Conductor; 12. Twisted pair; 121. Second aluminum foil Mylar layer; 122. Second braided layer; 123. Nylon filament; 13. First aluminum foil layer; 14. First braided layer; 15. Outer sheath; 16. Filler layer; 17. Ground wire; 2. Connector; 21. Connector; 22. Outer mold; 221. Terminal; 23. Fixing base; 231. Screw; 232. Limiting post; Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Example 1: Example 1 of this utility model discloses an HDMI high-flexibility drag chain cable, such as... Figure 1 As shown, the cable body 1 includes multiple conductors 11 and multiple twisted pairs 12. In this embodiment, the number of conductors 11 is preferably four, and the number of twisted pairs 12 is preferably five. The conductors 11 are copper wires covered with a high-density polyethylene insulation layer. Each twisted pair 12 consists of two copper wires covered with a high-density polyethylene insulation layer twisted together. During signal transmission, the electromagnetic waves radiated by the two copper wires cancel each other out, effectively reducing the degree of signal interference.

[0026] Meanwhile, each twisted pair 12 is covered with a second aluminum foil Mylar layer 121, and a second braided layer 122 is covered with the second aluminum foil Mylar layer 121. Multiple nylon filaments 123 are provided inside the second aluminum foil Mylar layer 121. The second aluminum foil Mylar layer 121 can isolate electromagnetic interference, thereby preventing signal interference between multiple twisted pairs 12, while the nylon filaments 123 can improve the tensile strength of each twisted pair 12.

[0027] In addition, a first aluminum foil layer 13 is wrapped around the multi-strand twisted pair 12 and the multiple conductors 11. The multi-strand twisted pair 12 and the multiple conductors 11 are all located within the first aluminum foil layer 13. The first aluminum foil layer 13 can isolate external electromagnetic interference, providing a double isolation effect. The first aluminum foil layer 13 is covered by a first braided layer 14, and the first braided layer 14 is covered by an outer sheath 15. The outer sheath 15 is made of purple nitrile PVC material. According to the UL48001 standard, the outer sheath 15 has a high temperature resistance of up to 80℃ and a hardness of 75A, resulting in a longer service life and less susceptibility to breakage. Simultaneously, a filler layer 16 is provided within the first aluminum foil layer 13. The filler layer 16 is made of bulky yarn and fills the spaces between the multi-strand twisted pair 12 and the multiple conductors 11. This fills the empty space within the first aluminum foil layer 13, which not only provides shock absorption but also reduces friction between the multi-strand twisted pair 12 and the multiple conductors 11, making the conductors 11 less prone to breakage and extending their service life.

[0028] In addition, ground wires 17 are provided between the first braided layer 14 and the first aluminum foil layer 13, and within the second aluminum foil Mylar layer 121. The ground wires 17 can improve safety. Furthermore, both the first braided layer 14 and the second braided layer 122 are made of aluminum-magnesium alloy. Aluminum-magnesium alloy is lightweight and corrosion-resistant. The first braided layer 14 and the second braided layer 122 improve the strength of the wire body 1, making the wire body 1 more resistant to bending and less prone to breakage after multiple bends.

[0029] In addition, connectors 2 are provided at both ends of the cable body 1. The connector 2 includes a connector 21, an inner mold provided on the connector 21, and an outer mold 22 provided on the inner mold. The inner mold is integrally injection molded from PVC onto the connector 21, and the outer mold 22 is integrally injection molded from PVC onto the inner mold. Multiple terminals 221 are provided on the connector 21. The terminals 221 are made of copper and have gold-plated surfaces.

[0030] The implementation principle of this utility model embodiment of a high-flexibility HDMI cable is as follows: During use, the cable chain drives the cable body 1 to move, while the first braided layer 14 and the second braided layer 122 improve the strength of the cable body 1. The bulky yarn fills the space inside the cable body, making the cable body 1 more resistant to bending and more flexible. It is not easy to break after multiple bends. In the test with R=80mm, frequency of 60 times per minute and movement distance of 2m, after more than 10 million swing tests, no breakage occurred, resulting in a long service life.

[0031] Example 2: The difference from Example 1 is that, referring to... Figure 4-5One side surface of the outer mold 22 is integrally formed with a fixing seat 23. A through hole is formed on the fixing seat 23 along the insertion direction of the connector 2. A screw 231 is inserted into the through hole, with one end of the screw 231 passing through the through hole and the other end integrally formed with a limiting post 232. The limiting post 232 abuts against the end face of the fixing seat 23. When the operator inserts the connector 2 into the equipment, the operator rotates the limiting post 232, causing the screw 231 to be threaded into the screw hole on the equipment until the limiting post 232 abuts against the end face of the fixing seat 23. This makes the connection between the connector 2 and the equipment more secure. In addition, multiple circumferentially spaced protrusions are provided on the circumferential surface of the fixing post. These protrusions increase friction and facilitate the operator's rotation of the limiting post 232.

[0032] 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 changes or modifications 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 modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. An HDMI high-flexibility drag chain cable, characterized in that: The cable body (1) includes multiple conductors (11), multiple twisted pairs (12), a first aluminum foil layer (13) covering the multiple twisted pairs (12) and the multiple conductors (11), a first braided layer (14) covering the first aluminum foil layer (13), and an outer sheath (15) covering the first braided layer (14). A filling layer (16) is provided inside the first aluminum foil layer (13). A second aluminum foil Mylar layer (121) is covered and sleeved on each twisted pair (12), and a second braided layer (122) is covered and sleeved on the second aluminum foil Mylar layer (121).

2. The HDMI high-flexibility drag chain cable according to claim 1, characterized in that: The filling layer (16) is bulky yarn.

3. The HDMI high-flexibility drag chain cable according to claim 1, characterized in that: Both the first braided layer (14) and the second braided layer (122) are made of aluminum-magnesium alloy.

4. The HDMI high-flexibility drag chain cable according to claim 1, characterized in that: A ground wire (17) is provided between the first braided layer (14) and the first aluminum foil layer (13), and within the second aluminum foil Mylar layer (121).

5. The HDMI high-flexibility drag chain cable according to claim 1, characterized in that: Multiple nylon filaments (123) are disposed within the second aluminum foil Mylar layer (121).

6. The HDMI high-flexibility drag chain cable according to claim 1, characterized in that: The outer cover (15) is made of nitrile PVC material.

7. The HDMI high-flexibility drag chain cable according to claim 6, characterized in that: The outer cover (15) has a high temperature resistance of 80°C and a hardness of 75A.

8. The HDMI high-flexibility drag chain cable according to claim 1, characterized in that: Both ends of the wire body (1) are provided with connectors (2). The connector (2) includes a connector (21), an inner mold on the connector (21), and an outer mold (22) on the inner mold. The connector (21) is provided with multiple terminals (221). The outer mold (22) is provided with a fixing seat (23). The fixing seat (23) is provided with a through hole along the insertion direction of the connector (2). A screw (231) is inserted into the through hole. One end of the screw (231) passes through the through hole. The other end of the screw (231) is provided with a limiting post (232). The limiting post (232) abuts against the end face of the fixing seat (23).

9. The HDMI high-flexibility drag chain cable according to claim 8, characterized in that: The circumferential surface of the limiting post is provided with multiple protruding ridges at intervals.

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