HDMI video transmission line based on ceramic high polymer material

Abstract

The application belongs to the technical field of transmission line, and particularly relates to a HDMI video transmission line based on ceramicized high molecular material, which comprises a transmission line, an A male head and a B male head, wherein the transmission line is connected with the A male head at one end and connected with the B male head at the other end; the A sleeve in the A male head and the B male head can be universally rotated within a certain range relative to the B sleeve, so that the HDMI interfaces in the A male head and the B male head can be easily aligned with the corresponding HDMI slots; if the bending direction of the high-quality HDMI transmission line in the "memory bending" state is not suitable for the HDMI slot at this time, the HDMI interface can be inserted into the HDMI slot without forcibly bending the high-quality HDMI transmission line in the "memory bending" state in the opposite direction of the "memory bending" direction, so that the transmission line is prevented from being damaged. In addition, the ceramicized material is used to make the transmission line have the characteristics of fireproofing and flame retardation. The A male head and the B male head have small volume, simple structure and good use effect.

Description

Technical Field

[0001] This invention belongs to the field of transmission line technology, and particularly relates to an HDMI video transmission line based on ceramicized polymer materials. Background Technology

[0002] HDMI stands for High Definition Multimedia Interface, capable of transmitting uncompressed high-definition video and multi-channel audio data at a maximum data transfer rate of 5Gbps. It eliminates the need for digital-to-analog or analog-to-digital conversion before signal transmission, ensuring the highest quality audio and video signal delivery. In developing this invention, the inventors discovered at least the following problems in existing technologies: High-quality HDMI cables are generally thicker than standard HDMI cables, which significantly reduces their flexibility, resulting in what is commonly referred to as "stiffness." When a thicker, high-quality HDMI video cable is connected to two HDMI slots in a confined space, it inevitably needs to be bent or twisted significantly to insert accurately into the corresponding HDMI slot. This is especially true when the thicker, high-quality HDMI video cable is shorter to fit into confined spaces, making this bending or twisting even more difficult. Frequent bending or twisting of a short, thick, high-quality HDMI video cable in a confined space can easily cause irreversible damage to the transmission wires, affecting its lifespan or even rendering it unusable for normal signal transmission. In addition, when frequently changing and reconnecting HDMI cables to the HDMI slot, the frequent bending of the high-quality HDMI video transmission cable can easily cause a "memory bend" phenomenon, where the cable in the "memory bend" state may not be suitable for the new HDMI slot the next time it is changed and reconnected. Forcibly bending the "memory bend" cable in the opposite direction can easily damage the transmission cable, or even prevent normal signal transmission.

[0003] This invention designs an HDMI video transmission cable based on ceramicized polymer materials to solve the above problems. Summary of the Invention

[0004] To address the aforementioned deficiencies in the prior art, this invention discloses an HDMI video transmission cable based on ceramicized polymer materials, which is implemented using the following technical solution.

[0005] In the description of this invention, it should be noted that the terms "inner," "lower," "upper," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are merely for the convenience of describing the invention 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 or operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0006] An HDMI video transmission cable based on ceramicized polymer material is characterized in that: it includes a male connector A at one end and a male connector B at the other end; the transmission cable has five sets of main lines and five sets of signal lines inside, each set of main lines has two core wires and one ground wire; the five sets of main lines and five sets of signal lines total 20 transmission wires.

[0007] The aforementioned male connectors A and B are completely identical. Taking the structure of male connector A as an example: Male connector A includes an interface base, an A sleeve, a hollow outer spherical shell with a notch, a hollow inner spherical shell with a notch at one end of the A cylinder, an A-arc metal piece with a spherical surface at one end of the A straight metal piece, a hollow B spherical shell with a wire-locking sleeve at one end and a notch at the other end of the B sleeve, a B-ball at one end of the B cylinder, and a B-arc metal piece with a spherical surface at one end of the B straight metal piece. The B spherical shell has five circumferentially distributed strip-shaped spherical grooves around the central axis of the B sleeve, each containing a spherical arc elastic strip. The end of each arc elastic strip furthest from the B sleeve... The sphere has a locking head and a marking strip on its outer surface; the end of the B-shell away from the B-sleeve has a threaded hole; the B-cylinder is fixedly assembled in the B-sleeve, and the B-sphere is concentrically located in the B-shell; the outer cylindrical surface of the B-cylinder has 20 B-straight grooves evenly spaced circumferentially, and the outer spherical surface of the B-sphere has 20 spherical arc grooves evenly spaced circumferentially, with each of the 20 B-arc grooves communicating with the 20 B-straight grooves; the conical angle of the spherical surface formed by the ends of the 20 B-arc grooves away from the B-cylinder is between 45° and 60°; each B-straight groove contains a B-straight metal piece, and each B-arc groove contains a B-arc metal piece.

[0008] Five spherical grooves (A-shaped grooves) are evenly distributed around the central axis of the outer shell (A-shaped shell). An indicator strip mates with the marking strip on the outer surface of the outer shell. An interface socket is fixedly mounted at the end of the sleeve (A-shaped shell) away from the outer shell. One end of the interface socket has an HDMI interface, and the other end has two connectors. One connector has nine wiring holes, and the other has ten wiring holes; all wiring holes are electrically connected to the HDMI interface. The cylinder (A-shaped shell) is fixedly assembled within the sleeve (A-shaped shell), and the inner shell (A-shaped shell) is concentrically located within the outer shell. Twenty straight grooves (A-shaped grooves) are evenly distributed around the outer surface of the cylinder (A-shaped shell), and twenty through grooves (A-shaped grooves) are evenly distributed around the inner shell (A-shaped shell). Each of the twenty through grooves connects to one of the twenty straight grooves (A-shaped grooves). It contains 19 straight metal plates (A-type), and 19 arc-shaped metal plates on these 19 straight metal plates are installed in corresponding arc-shaped through slots (A-type). Each arc-shaped metal plate has a contact on its inner spherical surface at the end furthest from the corresponding straight metal plate (A-type). The inner and outer spherical shells (A-type) are rotatably mounted between the outer and inner shells (B-type) and the outer shell (B-type), respectively, and will not detach from the inner and outer shells (A-type) during the rotation of the outer and inner shells (B-type). The contacts on the 19 arc-shaped metal plates (A-type) are in electrical contact with the outer spherical surfaces of the 20 arc-shaped metal plates (B-type). The clips on the 5 arc elastic strips (A-type) respectively engage with the 5 arc slots (A-type). One end of each of the 19 straight metal plates (A-type) is electrically connected to 19 wiring holes on two terminal blocks (B-type). The fastening bolts engage with the threaded holes and with the outer spherical shell (A-type).

[0009] One end of the aforementioned transmission line is snapped into the cable clip of the male connector A, and the other end is snapped into the cable clip of the male connector B; the 20 transmission wires at one end of the transmission line in the male connector A are electrically connected to the 20 straight metal plates B in the male connector A; the 20 transmission wires at one end of the transmission line in the male connector B are electrically connected to the 20 straight metal plates B in the male connector B.

[0010] As a further improvement to this technology, the aforementioned arc elastic strip swings along the center of the B-shaped shell, and the surface of the clip on the arc elastic strip facing the center of the B-shaped shell is rounded. The advantage of the rounded corners is that the clip can easily pass over the corresponding A-shaped groove without causing any restriction. The entire assembly consisting of the B-sleeve, the B-shaped shell, and the clip sleeve is divided into two equal halves, one of which is called the B half-sleeve. The outer surface of the B half-sleeve has two symmetrical B-support plates. The two B-support plates on one B half-sleeve correspond one-to-one with the two B-support plates on the other B half-sleeve, and the two corresponding B-support plates are fixed by connecting bolts. The design of the B half-sleeve, B-support plates, and connecting bolts is to facilitate assembly into a B-sleeve.

[0011] As a further improvement to this technology, an inner ring with a B-clamp end is fixedly mounted on the outer cylindrical surface of the aforementioned cylinder B; an outer ring is fixedly mounted on the inner sleeve surface of the sleeve B; a B-ring groove is formed on the inner ring surface of the outer ring B, and a B-clamp groove is formed on the inner groove surface of the B-ring groove; the inner ring B is located in the B-ring groove, and the B-clamp end is located in the B-clamp groove. The design of the outer ring B, the inner ring B, and the clamp end B facilitates the fixed connection between the cylinder B and the sleeve B, ensuring that the arc metal plate B and the straight metal plate B installed on the cylinder B can move synchronously with the sleeve B after passing through the cylinder B, the inner ring B, the clamp end B, and the outer ring B, thus meeting the operational design requirements of this invention.

[0012] As a further improvement to this technology, the connection between the B cylinder and the B sphere adopts a curved surface transition, the connection between the B straight groove and the corresponding B arc groove adopts a curved surface groove transition, and the connection between the B arc metal sheet and the B straight metal sheet adopts a curved surface transition; the curved surface transition section between the B arc metal sheet and the B straight metal sheet completely fills the curved surface groove connecting the B straight groove and the corresponding B arc groove; the B arc metal sheet completely fills the B arc groove, the B straight metal sheet completely fills the B straight groove, and the outer spherical surface of the B arc metal sheet and the outer spherical surface of the B sphere are cosmos; the central surface of the B sphere perpendicular to the central axis of the B cylinder is named the central reference surface B; the distance between the two sides of the B arc metal sheet at the intersection of the B arc metal sheet and the central reference surface B is the largest; the distance between the two sides of the B arc metal sheet along the central axis of the B cylinder from the central reference surface B towards the B cylinder gradually decreases; the distance between the two sides of the B arc metal sheet along the central axis of the B cylinder from the central reference surface B towards the direction away from the B cylinder gradually decreases. The design of the B-arc metal sheet, wider in the middle and narrower at both sides, is due to the fact that during the universal rotation of the A or B male connector, the positions of the lines connecting the 19 contacts on the corresponding B-arc metal sheet are different. When the central axes of the A and B sleeves are collinear, all contacts on the A-arc metal sheet are located at the widest point of the B-arc metal sheet. When the A sleeve rotates universally relative to the central axis of the B sleeve, some contacts on the A-arc metal sheet are located at the widest point of the B-arc metal sheet, while others gradually move closer to the edge of the B-arc metal sheet. When the A or B male connector rotates to its limit angle, that is, when the A sleeve contacts the corresponding edge of the B spherical shell, the B-arc metal sheet is designed to be wider in the middle and narrower at both sides to ensure that all contacts on the A-arc metal sheet remain electrically contacted with the B-arc metal sheet. This design satisfies the requirement that all contacts remain electrically contacted with the B-arc metal sheet even when the A or B male connector rotates to its limit angle.

[0013] As a further improvement to this technology, an inner ring with an A-clamp end is fixedly mounted on the outer cylindrical surface of the aforementioned cylinder A; an outer ring is fixedly mounted on the inner sleeve surface of the sleeve A; an A-ring groove is formed on the inner ring surface of the outer ring A, and an A-clamp groove is formed on the inner groove surface of the A-ring groove; the inner ring A is located in the A-ring groove, and the A-clamp end is located in the A-clamp groove. The design of the outer ring A, the inner ring A, and the A-clamp end facilitates the fixed connection between the cylinder A and the sleeve A, ensuring that the A-arc metal sheet and the A-straight metal sheet installed on the cylinder A, after passing through the cylinder A, the inner ring A, the clamp end A, and the outer ring A, can move synchronously with the sleeve A, thus meeting the operational design requirements of this invention.

[0014] As a further improvement to this technology, the connection between the aforementioned cylinder A and the inner spherical shell A adopts a curved surface transition; the connection between the straight groove A and the corresponding arc through groove A adopts a curved groove transition; and the connection between the arc metal sheet A and the straight metal sheet A adopts a curved surface transition. The curved transition section between the arc metal sheet A and the straight metal sheet A completely fills the curved groove connecting the straight groove A and the corresponding arc through groove A. The aforementioned arc metal sheet A completely fills the arc through groove A, and the straight metal sheet A completely fills the straight groove A. The outer spherical surface of the arc metal sheet A and the outer spherical surface of the inner spherical shell A are cosmos. The central surface of the inner spherical shell A, perpendicular to the central axis of the aforementioned cylinder A, is named the central reference surface A. When the central axes of sleeve A and sleeve B are collinear, the contact point on the arc metal sheet A is located at the intersection of the central reference surface A and the arc metal sheet A. The above-defined contact point positions are also to meet the requirement that all contacts remain electrically contacting the arc metal sheet B even when the male connector A or male connector B is rotated to its limit angle.

[0015] As a further improvement to this technology, the entire assembly consisting of the aforementioned A-sleeve and A-outer spherical shell is divided into two equal halves, one of which is called the A-half-sleeve. The outer surface of the A-half-sleeve has two symmetrical A-support plates. The two A-support plates on one A-half-sleeve correspond one-to-one with the two A-support plates on the other A-half-sleeve, and the two corresponding A-support plates are fixed together by connecting bolts. The design of the A-half-sleeve, A-support plates, and connecting bolts facilitates assembly into a single A-sleeve.

[0016] As a further improvement to this technology, the insulation layer of all 20 transmission wires is made of ceramicized polymer material.

[0017] As a further improvement to this technology, the aforementioned ceramicized polymer material is ceramicized silicone rubber. The advantages of using ceramicized silicone rubber are: it possesses excellent fire resistance, flame retardancy, low smoke, and non-toxic properties; the extrusion molding process is simple; and its residue after combustion is a hard ceramicized shell that does not melt or drip in a fire environment. It can pass the circuit integrity test specified in GB / T19216.21-2003, which requires exposure to fire at 950℃~1000℃ for 90 minutes followed by 15 minutes of cooling. It is suitable for any location requiring fire protection, providing robust protection while ensuring uninterrupted power transmission in the event of a fire. Ceramicized silicone rubber products require no special equipment, and the processing technology is simple; production can be achieved using traditional silicone rubber processing equipment. Compared to current fire-resistant wire and cable production processes, it offers higher production efficiency, reducing energy consumption and saving costs.

[0018] As a further improvement to this technology, the 20 transmission wires at one end of the transmission line in the male A connector are respectively connected to the 20 straight metal pieces in the male A connector by soldering through 20 B wires; in the male A connector, the ends of the 19 straight metal pieces away from the contacts are respectively connected to the 19 wiring holes by soldering through 19 A wires; the 20 transmission wires at one end of the transmission line in the male B connector are respectively connected to the 20 straight metal pieces in the male B connector by soldering through 20 B wires; in the male B connector, the ends of the 19 straight metal pieces away from the contacts are respectively connected to the 19 wiring holes by soldering through 19 A wires.

[0019] The design of the 20 B-arc grooves surrounding the end of the B-cylinder with a final spherical cone angle between 45° and 60° ensures that when the A-sleeve drives the arc elastic strip and the chuck on the A-outer spherical shell to swing along the A-arc groove trajectory to the maximum angle, the contacts on the A-arc metal sheet still make electrical contact with the corresponding B-arc metal sheet, thereby ensuring that the male connector of the present invention can still transmit signals normally when it is rotated to the limit angle.

[0020] Traditional transmission lines have five main wires and four signal wires, with each main wire containing two core wires and one ground wire; totaling 19 transmission wires. In contrast, the transmission line of this invention has five main wires and five signal wires, with each main wire containing two core wires and one ground wire; totaling 20 transmission wires. However, the HDMI interface of the A-male and B-male connectors of this invention has 19 signal receiving paths, making the HDMI interfaces of the A-male and B-male connectors identical to traditional HDMI interfaces. The reason for having one more signal wire in the transmission line of this invention compared to traditional transmission lines is to ensure normal signal output after the A-male and B-male connectors of this invention have undergone the same angle rotation operation.

[0021] The interface socket, junction box, HDMI interface, and electrical connection between the wiring hole and the HDMI interface of the present invention can all be achieved using existing technologies.

[0022] Compared to traditional HDMI video transmission cable technology, the advantages of this invention are:

[0023] 1. When connecting two HDMI slots in a relatively confined environment, the HDMI video transmission cable of this invention only requires rotating the A male connector and B male connector of this invention by the same angle around the central axis of their respective B sleeves. Then, the A sleeve drives the A outer spherical shell to swing along the arc trajectory of the A arc groove to a certain extent, making it easier for the HDMI interface in the A sleeve to adapt to and align with the corresponding HDMI slot, and then inserting it into the corresponding HDMI slot. Thus, the HDMI video transmission cable of this invention can be smoothly inserted into the corresponding HDMI slot with only a small degree of bending or twisting, avoiding the need for a large degree of bending or twisting of the HDMI video transmission cable to accurately insert into the corresponding HDMI slot. This avoids damage or breakage of the transmission wires caused by frequent large-scale bending or twisting of the transmission wires in the HDMI video transmission cable, thereby protecting the HDMI video transmission cable and extending its service life.

[0024] 2. Since the A sleeve of the male connector A and male connector B in this invention can rotate omnidirectionally within a certain range relative to the B sleeve, the HDMI interface in the male connector A and male connector B can be easily aligned with the corresponding HDMI slot. Therefore, if the bending direction of the high-quality HDMI video transmission cable in the "memory bend" state is not suitable for the HDMI slot at this time, it is not necessary to forcibly bend the high-quality HDMI video transmission cable in the "memory bend" state in the opposite direction of the "memory bend" to insert the HDMI interface into the HDMI slot, thus avoiding damage to the HDMI video transmission cable.

[0025] 3. The design of the combination of the label strip and the indicator strip, and the combination of the arc elastic strip and the card head with the A arc groove, has the advantage of avoiding the phenomenon of poor information transmission caused by the user's inaccurate rotation operation of the A male or B male connector when it is inserted into the HDMI slot. It ensures the accuracy of the rotation adjustment of the A male and B male connectors around their respective B sleeve central axis, thereby ensuring that the present invention can transmit signals normally.

[0026] 4. The A and B male connectors of this invention can be rotated relative to the transmission line to achieve normal signal transmission. If a traditional HDMI video transmission line were to achieve the same rotating male connector to fit the HDMI slot, two methods would generally be used: 1. Soldering multiple wires inside the transmission line to the corresponding contacts of the male connector, ensuring sufficient slack in the main wire, signal wire, and ground wire at the locations of these multiple wires. During rotation, this slack is used to prevent excessive pressure between the wires, ensuring normal signal transmission. 2. To ensure the male connector can rotate relative to the transmission line, it is necessary to consider that the 19 contacts of the male connector and the 19 wires of the transmission line remain electrically connected during rotation. The rotation of the male connector will cause a change in the position of the contacts relative to the electrically connected wires. Making the male connector contacts or wires into metal plates extending in the rotation direction can achieve the purpose of sliding electrical connection between the contacts and the metal plates during rotation. This method requires 19 metal plates, and the spatial distribution of the 19 sets of metal plates and corresponding contacts will be extremely complex, significantly increasing the space occupied. Therefore, the two traditional methods require sufficient installation space, resulting in bulky HDMI video transmission cables, which is detrimental to the production and assembly of HDMI video transmission cables. The A-type male connector and B-type male connector of this invention are small in size, simple in structure, and have better performance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an HDMI video transmission cable.

[0028] Figure 2 This is a front view of the cross-section of male connector A.

[0029] Figure 3 This is a schematic cross-sectional view of sphere B installed inside sphere B's shell and the connection of wire B.

[0030] Figure 4 This is a schematic diagram of the installation of the outer ring B.

[0031] Figure 5 It shows the installation cross-section of the inner ring B, the structure of the ball B, and the structural diagram of the metal sheet of the arc B.

[0032] Figure 6 This is a schematic diagram of the interface socket installed in sleeve A and the connection of wire A.

[0033] Figure 7 This is a schematic diagram of the installation of the outer ring A.

[0034] Figure 8 It shows the installation cross-section of the inner ring A, the structure of the inner spherical shell A, and the structural diagram of the metal sheet of arc A.

[0035] Figure 9 This is a front view and a partially enlarged schematic diagram of a cross-section of the inner spherical shell A and the outer spherical shell A, which are rotated and installed between the spherical shell B and the sphere B.

[0036] Figure 10 This is a schematic diagram showing the combination of indicator strips and sign strips.

[0037] Figure 11 This is a grouping diagram of the non-rotational operation of the present invention.

[0038] Figure 12 This is a grouping diagram after the rotation operation of the present invention.

[0039] Figure 13 This is a front view of the internal cross-section of a transmission line.

[0040] Figure 14 This is a schematic diagram showing the positional changes of the electrical contacts during the rotational operation of the present invention.

[0041] Labels in the diagram: 1. Transmission line; 2. Main line; 3. Signal line; 4. Male connector A; 5. Male connector B; 6. HDMI interface; 7. Interface socket; 8. Junction board; 9. Outer spherical shell A; 10. Sleeve A; 12. Connecting bolt; 13. Fastening bolt; 14. Support plate A; 15. Half sleeve A; 16. Sleeve B; 17. Spherical shell B; 18. Arc elastic strip; 19. Support plate B; 20. Half sleeve B; 21. Outer ring B; 22. Inner ring B; 23. Straight metal piece B; 24. Ball B; 25. Inner spherical shell A; 26. Cylinder A; 27. A 28. Straight metal sheet; 29. ​​Outer ring (A); 30. Inner ring (A); 31. Wire clamp sleeve; 32. Straight groove (A); 33. Identifying strip; 34. Cylinder (B); 35. Threaded hole; 36. Snap-on head; 37. Ring groove (B); 38. Snap-on slot (B); 39. Snap-on end (B); 40. Arc-shaped metal sheet (B); 41. Arc groove (B); 42. Straight groove (B); 43. Ending spherical surface; 44. Arc groove (A); 45. Arc-shaped metal sheet (A); 46. Contact; 47. Snap-on slot (A); 49. Ring groove (A); 50. Snap-on end (A); 51. Arc through groove (A); 52. Wire (B); 53. Wire (A); 55. Indicator strip. Detailed Implementation

[0042] The invention will now be described with reference to the accompanying drawings; however, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this disclosure. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of this disclosure. All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted in a manner consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0043] An HDMI video transmission cable based on ceramicized polymer materials, such as Figure 1 As shown, it includes a transmission line 1 with one end connected to male connector A 4 and the other end connected to male connector B 5; as Figure 13As shown, transmission line 1 has five sets of main lines 2 and five sets of signal lines 3. Each set of main lines 2 has two core wires and one ground wire; the five sets of main lines 2 and the five sets of signal lines 3 together have 20 transmission wires.

[0044] As shown in the figure, the above-mentioned male connector A 4 and male connector B 5 are completely identical. Taking the structure of male connector A 4 as an example: Male connector A 4 includes an interface base 7, an A sleeve 10, a hollow A outer spherical shell 9 with a notch, a hollow A inner spherical shell 25 with a notch at one end of an A cylinder 26, an A curved metal sheet 45 with a spherical surface at one end of an A straight metal sheet 27, a hollow B spherical shell 17 with a wire-locking sleeve 30 at one end and a notch at the other end of an B sleeve 16, a B ball 24 at one end of a B cylinder 34, and a B curved metal sheet 40 with a spherical surface at one end of a B straight metal sheet 23. Figure 3 , 4 As shown, the five strip-shaped spherical grooves circumferentially distributed around the central axis of the B-sleeve 16 of the B-spherical shell 17 each have a spherical arc elastic strip 18. Each arc elastic strip 18 has a locking head 36 on its inner spherical surface and a marking strip 32 on its outer spherical surface at the end away from the B-sleeve 16. A threaded hole 35 is opened on the spherical surface of the B-spherical shell 17 at the end away from the B-sleeve 16. The B-cylinder 34 is fixedly assembled in the B-sleeve 16, and the B-sphere 24 is concentrically located in the B-spherical shell 17. Figure 5 As shown, 20 straight grooves 42 are evenly distributed circumferentially on the outer cylindrical surface of cylinder B 34, and 20 spherical arc grooves 41 are evenly distributed circumferentially on the outer spherical surface of sphere B 24. The 20 arc grooves 41 are connected to the 20 straight grooves 42 respectively. The cone angle of the spherical surface 43 formed by the ends of the 20 arc grooves 41 away from cylinder B 34 is between 45° and 60°. Each straight groove 42 contains a straight metal plate 23, and each arc groove 41 contains an arc metal plate 40.

[0045] like Figure 6 , 7 As shown, five spherical grooves 44 are evenly distributed around the central axis of sleeve 10 on the outer spherical surface of outer shell 9 (A); Figure 10 As shown, the outer spherical surface of the outer shell 9 (A) has an indicator strip 55 that mates with the marking strip 32; as Figure 6 , 7 As shown, an interface socket 7 is fixedly mounted on the end of sleeve A 10 away from the outer spherical shell A 9; one end of the interface socket 7 has an HDMI interface 6, and the other end has two connector plates 8; one connector plate 8 has 9 wiring holes, and the other connector plate 8 has 10 wiring holes, all of which are electrically connected to the HDMI interface 6; cylinder A 26 is fixedly assembled in sleeve A 10, and inner spherical shell A 25 is concentrically located in outer spherical shell A 9; as Figure 8As shown, 20 straight grooves 31 are evenly distributed circumferentially on the outer cylindrical surface of cylinder A 26, and 20 arc grooves 51 are evenly distributed circumferentially on the inner spherical shell A 25, penetrating the spherical surface. The 20 arc grooves 51 are connected to the 20 straight grooves 31. 19 straight metal pieces 27 are installed in the 20 straight grooves 31, and 19 arc metal pieces 45 on the 19 straight metal pieces 27 are installed in the corresponding 19 arc grooves 51. Each arc metal piece 45 has a contact 46 on its inner spherical surface at the end furthest from the corresponding straight metal piece 27. Figure 2 As shown, inner spherical shell 25 and outer spherical shell 9 are rotatably mounted between spherical shell 17 and sphere 24, with outer spherical shell 9 and spherical shell 17 being concentric; they will never detach from inner spherical shell 25 and outer spherical shell 9 during the rotation of spherical shell 17 and sphere 24; as Figure 9 As shown, the contacts 46 on the 19 A-arc metal plates 45 are in electrical contact with the outer spherical surface of the 20 B-arc metal plates 40; as Figure 1 , 9 As shown, the clips 36 on the five arc elastic strips 18 respectively mate with the five A arc grooves 44; as Figure 3 , 6 As shown, one end of each of the 19 straight metal plates 27 (A) is electrically connected to one of the 19 wiring holes on the two terminal blocks 8; as... Figure 10 As shown, the fastening bolt 13 is threaded into the threaded hole 35, and the fastening bolt 13 is also engaged with the outer spherical shell 9 of A.

[0046] like Figure 1 As shown, one end of the transmission line 1 is inserted into the cable clamping sleeve 30 of male connector A 4, and the other end is inserted into the cable clamping sleeve 30 of male connector B 5; Figure 3 As shown, the 20 transmission wires at one end of the transmission line 1 in the male connector A 4 are electrically connected to the 20 straight metal pieces 23 in the male connector A 4; the 20 transmission wires at one end of the transmission line 1 in the male connector B 5 are electrically connected to the 20 straight metal pieces 23 in the male connector B 5.

[0047] like Figure 4 As shown, the aforementioned arc elastic strip 18 swings along the center of the B spherical shell 17, and the surface of the locking head 36 on the arc elastic strip 18 facing the center of the B spherical shell 17 is rounded; the advantage of the rounded corners is that the locking head 36 can easily pass over the corresponding A arc groove 44 without causing any restriction. Figure 3 , 4As shown, the entire assembly consisting of the aforementioned sleeve 16, spherical shell 17, and cable clamp 30 is divided into two equal halves, one of which, the sleeve 16, is the half-sleeve 20. The outer surface of the half-sleeve 20 has two symmetrical support plates 19. The two support plates 19 on one half-sleeve 20 correspond one-to-one with the two support plates 19 on the other half-sleeve 20, and the two corresponding support plates 19 are fixed together by connecting bolts 12. The design of the half-sleeve 20, the support plates 19, and the connecting bolts 12 facilitates assembly into a single sleeve 16.

[0048] like Figure 4 , 5 As shown, an inner ring 22 with a locking end 39 is fixedly mounted on the outer cylindrical surface of the aforementioned cylinder 34; an outer ring 21 is fixedly mounted on the inner surface of the sleeve 16; a ring groove 37 is formed on the inner surface of the outer ring 21, and a locking groove 38 is formed on the inner surface of the ring groove 37; the inner ring 22 is located in the ring groove 37, and the locking end 39 is located in the locking groove 38. The design of the outer ring 21, the inner ring 22, and the locking end 39 facilitates the fixed connection between the cylinder 34 and the sleeve 16, ensuring that the arc metal sheet 40 and the straight metal sheet 23 installed on the cylinder 34 can move synchronously with the sleeve 16 after passing through the cylinder 34, the inner ring 22, the locking end 39, and the outer ring 21, thus meeting the operational design requirements of this invention.

[0049] like Figure 5 As shown, the connection between the aforementioned cylinder B 34 and sphere B 24 adopts a curved surface transition, the connection between the straight groove B 42 and the corresponding arc groove B 41 adopts a curved surface groove transition, and the connection between the arc metal sheet B 40 and the straight metal sheet B 23 adopts a curved surface transition; the curved surface transition section between the arc metal sheet B 40 and the straight metal sheet B 23 completely fills the curved surface groove connecting the straight groove B 42 and the corresponding arc groove B 41; the aforementioned arc metal sheet B 40 completely fills the arc groove B 41, the straight metal sheet B 23 completely fills the straight groove B 42, and the outer spherical surface of the arc metal sheet B 40 and the outer spherical surface of the sphere B 24 are cosine. The central surface of sphere 24, perpendicular to the central axis of cylinder B 34, is named the central reference surface B. The distance between the two sides of arc metal piece 40 at the intersection of arc metal piece 40 and central reference surface B is the largest. The distance between the two sides of arc metal piece 40 along the central axis of cylinder B 34 from central reference surface B towards cylinder B 34 gradually decreases. The distance between the two sides of arc metal piece 40 along the central axis of cylinder B 34 from central reference surface B towards directions away from cylinder B 34 gradually decreases. From the above, it can be seen that the design of arc metal piece 40, which is wider in the middle and narrower at both sides, is because during the omnidirectional rotation of male connector A 4 or male connector B 5, the position of the line connecting the 19 contacts 46 is different for the corresponding arc metal piece 40. Figure 14As shown in (a), when the central axes of sleeve A 10 and sleeve B 16 are collinear, all contacts on arc A metal sheet 45 are located at the widest point of arc B metal sheet 40, as shown in (a). Figure 14 The Z-line shown in (a) is the line connecting 19 contacts 46; as shown in (a) Figure 14 As shown in (b), when sleeve A 10 rotates omnidirectionally relative to the central axis of sleeve B 16, some contacts on arc A metal sheet 45 are located at the widest point of arc B metal sheet 40, while some contacts on arc A metal sheet 45 gradually move closer to the edge of arc B metal sheet 40, such as... Figure 14 The x-line shown in (b) is the line connecting the 19 contacts 46. When the male connector A 4 or male connector B 5 is rotated to its limit angle, that is, when the A sleeve 10 contacts the edge of the corresponding B spherical shell 17, in order to ensure that all contacts on the A arc metal sheet 45 are still in electrical contact with the B arc metal sheet 40, the B arc metal sheet 40 is designed to be wider in the middle and narrower on both sides. This satisfies the requirement that when the male connector A 4 or male connector B 5 is rotated to its limit angle, all contacts are still in electrical contact with the B arc metal sheet 40.

[0050] like Figure 7 , 8 As shown, an inner ring 29 with an A-clamp end 50 is fixedly mounted on the outer cylindrical surface of the aforementioned cylinder A 26; an outer ring 28 is fixedly mounted on the inner sleeve surface of the sleeve A 10; an A-ring groove 49 is opened on the inner ring surface of the outer ring 28, and an A-clamp groove 47 is opened on the inner groove surface of the A-ring groove 49; the inner ring 29 is located in the A-ring groove 49, and the A-clamp end 50 is located in the A-clamp groove 47. The design of the outer ring 28, the inner ring 29, and the A-clamp end 50 facilitates the fixed connection between the cylinder A 26 and the sleeve A 10, ensuring that the arc metal piece 45 and the straight metal piece 27 installed on the cylinder A 26 can move synchronously with the sleeve A 10 after passing through the cylinder A 26, the inner ring 29, the clamp end 50, and the outer ring 28, thus meeting the operational design requirements of this invention.

[0051] like Figure 8As shown, the connection between the aforementioned cylinder A 26 and the inner spherical shell A 25 adopts a curved surface transition; the connection between the straight groove A 31 and the corresponding arc through groove A 51 adopts a curved surface groove transition; the connection between the arc metal sheet A 45 and the straight metal sheet A 27 adopts a curved surface transition; the curved surface transition section between the arc metal sheet A 45 and the straight metal sheet A 27 completely occupies the curved surface groove connecting the straight groove A 31 and the corresponding arc through groove A 51; the aforementioned arc metal sheet A 45 completely occupies the arc through groove A 51, the straight metal sheet A 27 completely occupies the straight groove A 31, and the outer spherical surface of the arc metal sheet A 45 and the outer spherical surface of the inner spherical shell A 25 are cosmos; the central surface of the inner spherical shell A 25 perpendicular to the central axis of the aforementioned cylinder A 26 is named the central reference surface A; when the central axes of sleeve A 10 and sleeve B 16 are collinear, the contact point on the arc metal sheet A 45 is located at the intersection of the central reference surface A and the arc metal sheet A 45. The above-mentioned contact positions are also designed to ensure that all contacts remain electrically connected to the B arc metal plate 40 even when the A male connector 4 or B male connector 5 is rotated to its limit angle.

[0052] like Figure 6 , 7 As shown, the entire assembly consisting of the aforementioned sleeve A 10 and outer spherical shell A 9 is divided into two equal halves, one of which, sleeve A 10, is called half sleeve A 15. Two support plates A 14 are symmetrically arranged on the outer surface of half sleeve A 15. The two support plates A 14 on one half sleeve A 15 correspond one-to-one with the two support plates A 14 on the other half sleeve A 15, and the two corresponding support plates A 14 are fixed together by connecting bolts 12. The design of half sleeve A 15, support plates A 14, and connecting bolts 12 facilitates assembly into a single sleeve A 10.

[0053] The insulation layer of all 20 transmission wires mentioned above is made of ceramic polymer material.

[0054] The aforementioned ceramicized polymer material uses ceramicized silicone rubber. The advantages of using ceramicized silicone rubber are: it possesses excellent fire resistance, flame retardancy, low smoke, and non-toxic properties; its extrusion molding process is simple; and its residue after combustion is a hard ceramicized shell that does not melt or drip in a fire environment. It passes the circuit integrity test specified in GB / T19216.21-2003, which requires exposure to fire at 950℃~1000℃ for 90 minutes followed by 15 minutes of cooling. It is suitable for any location requiring fire protection, providing robust protection while ensuring uninterrupted power transmission in the event of a fire. Ceramicized silicone rubber products require no special equipment, and the processing technology is simple; production can be achieved using traditional silicone rubber processing equipment. Compared to current fire-resistant wire and cable production processes, it offers higher production efficiency, reducing energy consumption and saving costs.

[0055] like Figure 3 , 6As shown, the 20 transmission wires at one end of the transmission line 1 in the male connector A 4 are connected to the 20 straight metal tabs 23 in the male connector A 4 by soldering through 20 wires 52; in the male connector A 4, the ends of the 19 straight metal tabs 27 away from the contact 46 are connected to the 19 wiring holes by soldering through 19 wires 53; the 20 transmission wires at one end of the transmission line 1 in the male connector B 5 are connected to the 20 straight metal tabs 23 in the male connector B 5 by soldering through 20 wires 52; in the male connector B 5, the ends of the 19 straight metal tabs 27 away from the contact 46 are connected to the 19 wiring holes by soldering through 19 wires 53.

[0056] like Figure 5 As shown, the design of the cone angle of the end spherical surface 43 formed by the 20 B arc grooves 41 away from the B cylinder 34 is between 45° and 60°, which is to ensure that when the A sleeve 10 drives the arc elastic strip 18 and the clamp 36 on the A outer spherical shell 9 to swing along the trajectory of the A arc groove 44 to the maximum angle, the contact point on the A arc metal piece 45 still makes electrical contact with the corresponding B arc metal piece 40, thereby ensuring that the male head of the present invention can still transmit signals normally when it is rotated to the limit angle.

[0057] Traditional transmission line 1 has five main lines 2 and four signal lines 3, with each main line 2 containing two core wires and one ground wire; the five main lines 2 and four signal lines 3 together comprise 19 transmission wires. In this invention, transmission line 1 has five main lines 2 and five signal lines 3, with each main line 2 containing two core wires and one ground wire; the five main lines 2 and five signal lines 3 together comprise 20 transmission wires. However, the HDMI interface 6 of the connectors 7 of the A male connector 4 and B male connector 5 of this invention has 19 signal receiving paths, making the HDMI interface 6 of the A male connector 4 and B male connector 5 identical to the traditional HDMI interface 6. The reason why transmission line 1 of this invention has one more signal line 3 than traditional transmission line 1 is to facilitate normal signal output after the A male connector 4 and B male connector 5 of this invention undergo the same angle rotation operation.

[0058] The interface socket 7, the junction box 8, the HDMI interface 6, and the electrical connection between the wiring hole and the HDMI interface 6 of the present invention can all adopt existing technologies.

[0059] In a specific embodiment of the present invention: when the corresponding HDMI slot is not inserted in the initial state, the fastening bolt 13 frictionally limits the outer spherical surface of the A outer spherical shell 9 to ensure that the A sleeve 10 and the B sleeve 16 are relatively fixed; the central axes of the A sleeve 10 and the B sleeve 16 are collinear, and the contact point on the A arc metal piece 45 is located at the intersection of the central reference plane A and the A arc metal piece 45; the contacts 46 on the 19 A arc metal pieces 45 are in electrical contact with the outer spherical surfaces of the 19 B arc metal pieces 40 out of the 20 B arc metal pieces 40; the position of the indicator strip 55 is aligned with that of an identification strip 32; the clips 36 of the 5 arc elastic strips 18 are respectively located in the 5 A arc grooves 44.

[0060] In practical use, to minimize bending or twisting of the high-quality HDMI video transmission cable, simply rotate male connector A 4 and male connector B 5 of this invention by the same angle. This allows the HDMI interface 6 in male connector A 4 and male connector B 5 to be easily aligned with the HDMI slot and then inserted into the corresponding HDMI slot. The rotation operation for male connector A 4 and male connector B 5 is exactly the same. Taking the rotation operation of one of male connector A 4 as an example:

[0061] Assuming the HDMI slot is not initially inserted, the indicator bar 55 aligns with label bar 32 numbered (A). The remaining four label bars 32, rotating clockwise, are (B), (C), (D), and (E). Figure 11 As shown, the five main lines 2 and five signal lines 3 form five groups of combined lines. Each group of combined lines contains one main line 2 and one signal line 3, meaning each group of combined lines has four transmission wires. The five groups of combined lines are, in order, (A) combined line, (B) combined line, (C) combined line, (D) combined line, and (E) combined line. Figure 11As shown, 20 B-arc metal pieces 40 are arranged in a clockwise direction, with every four B-arc metal pieces 40 forming a fixed assembly, resulting in five fixed assemblies. These five fixed assemblies, arranged clockwise, are (A), (B), (C), (D), and (E). Fixed assembly (A) corresponds to label 32 (A), fixed assembly (B) corresponds to label 32 (B), fixed assembly (C) corresponds to label 32 (C), fixed assembly (D) corresponds to label 32 (D), and fixed assembly (E) corresponds to label 32 (E). Fixed assembly (A) is always electrically connected to the corresponding assembly line (A), and (B)... The fixed assembly piece is always electrically connected to the corresponding assembly line (B), the fixed assembly piece (C) is always electrically connected to the corresponding assembly line (C), the fixed assembly piece (D) is always electrically connected to the corresponding assembly line (D), and the fixed assembly piece (E) is always electrically connected to the corresponding assembly line (E). The 19 A-arc metal pieces 45 are divided into five groups of rotating assembly pieces in a clockwise direction. The five groups of rotating assembly pieces are (A), (B), (C), (D), and (E) rotating assembly pieces. Each of the (A), (B), (C), and (E) rotating assembly pieces has 4 A-arc metal pieces 45, while the (D) rotating assembly piece has 3 metal pieces. Assume that at this point, (A) converter connector is electrically connected to (A) fixed connector, (B) converter connector is electrically connected to (B) fixed connector, (C) converter connector is electrically connected to (C) fixed connector, (D) converter connector is electrically connected to (D) fixed connector, and (E) converter connector is electrically connected to (E) fixed connector. In this state, the signal transmission path in male connector 4 of A is as follows: (A) converter line is electrically transmitted to (A) converter connector via (A) fixed connector, (B) converter line is electrically transmitted to (B) converter connector via (B) fixed connector, (C) converter line is electrically transmitted to (C) converter connector via (C) fixed connector, (D) converter line is electrically transmitted to (D) converter connector via (D) fixed connector, and (E) converter line is electrically transmitted to (E) converter connector via (E) fixed connector.

[0062] Loosen the fastening bolt 13 so that it no longer rubs against the outer spherical surface of the outer shell 9; while holding the B sleeve 16 in place, rotate the A sleeve 10 clockwise around the central axis of the B sleeve 16. The A cylinder 26, the A inner spherical shell 25, and the 19 A arc metal pieces 45 in the A sleeve 10 move synchronously with the A sleeve 10; one end of the indicator bar 55 disaligns with the (A) label bar 32; assuming that when one end of the indicator bar 55 is aligned with the (C) label bar 32, under conditions of very small bending or twisting of the high-quality HDMI video transmission cable, A The HDMI interface 6 in the male connector 4 can be easily aligned with the corresponding HDMI slot. At this time, stop rotating the A sleeve 10 and align one end of the indicator bar 55 with the (C) mark bar 32. During the process, the locking head 36 of the arc elastic bar 18 disengages from the A arc groove 44 in the initial state and enters the corresponding A arc groove 44. The rotation feeling of the locking head 36 passing over the A arc groove 44 in the initial state and entering the corresponding A arc groove 44 will have a noticeable "clunking" feeling like traditional gear adjustment, allowing the user to clearly feel the rotation adjustment of the A sleeve 10, which is convenient for operation and adjustment. Then, without rotating A sleeve 10 around the central axis of B sleeve 16, that is, without the locking head 36 of the arc elastic strip 18 disengaging from the corresponding A arc groove 44, A sleeve 10 drives A outer spherical shell 9 to swing to a certain extent along the arc trajectory of A arc groove 44, so that the HDMI interface 6 in A sleeve 10 can more easily adapt to and align with the corresponding HDMI slot, and the HDMI interface 6 in A sleeve 10 can be inserted into the corresponding HDMI slot more smoothly; as A sleeve 10 drives A outer spherical shell 9 to swing along the arc trajectory of A arc groove 44, the locking head 36 slides in the corresponding A arc groove 44. Afterwards, the fastening bolt 13 is tightened, so that the fastening bolt 13 and the outer spherical surface of A outer spherical shell 9 are re-rubbed and limited. When the indicator bar 55 on set A 10 rotates to the position of the (C) marking bar 32, the rotation amplitude of the 19 A arc metal pieces 45 just passes through the 7 B arc metal pieces 40, and the contacts 46 on the 19 A arc metal pieces 45 re-establish electrical contact with the 19 B arc metal pieces 40 out of the 20 B arc metal pieces 40. For example... Figure 12As shown, at this time, (A) switch piece is no longer electrically connected to (A) fixed switch piece, but (A) switch piece is electrically connected to (C) fixed switch piece; (B) switch piece is no longer electrically connected to (B) fixed switch piece, but (B) switch piece is electrically connected to (D) fixed switch piece; (C) switch piece is no longer electrically connected to (C) fixed switch piece, but (C) switch piece is electrically connected to (E) fixed switch piece; (D) switch piece is no longer electrically connected to (D) fixed switch piece, but (D) switch piece is electrically connected to (A) fixed switch piece; (E) switch piece is no longer electrically connected to (E) fixed switch piece, but (E) switch piece is electrically connected to (B) fixed switch piece. When the indicator bar 55 on set A10 rotates to the position of the (C) mark bar 32, the signal transmission path in male connector 4 of A is as follows: (A) combination line is electrically transmitted to (D) rotating combination bar via (A) fixed combination plate, (B) combination line is electrically transmitted to (E) rotating combination plate via (B) fixed combination plate, (C) combination line is electrically transmitted to (A) rotating combination plate via (C) fixed combination plate, (D) combination line is electrically transmitted to (B) rotating combination plate via (D) fixed combination plate, and (E) combination line is electrically transmitted to (C) rotating combination plate via (E) fixed combination plate.

[0063] The initial state of male connector B5 must be the same as the initial state of male connector A4, that is, the position of the (A) mark strip 32 in male connector B5 is aligned at one end of the indicator strip 55; the signal transmission path in male connector B5 is as follows: (A) combination line is electrically transmitted to (A) converter strip via (A) fixed combination piece, (B) combination line is electrically transmitted to (B) converter strip via (B) fixed combination piece, (C) combination line is electrically transmitted to (C) converter strip via (C) fixed combination piece, (D) combination line is electrically transmitted to (D) converter strip via (D) fixed combination piece, and (E) combination line is electrically transmitted to (E) converter strip via (E) fixed combination piece.

[0064] Similarly, when one end of the indicator strip 55 on the adapter of male connector B is rotated to the position of the (C) marking strip 32, the signal transmission path of male connector B in this state is as follows: (A) the combined line is electrically transmitted to the (D) adapter via the (A) fixed combined piece, (B) the combined line is electrically transmitted to the (E) adapter via the (B) fixed combined piece, (C) the combined line is electrically transmitted to the (A) adapter via the (C) fixed combined piece, (D) the combined line is electrically transmitted to the (B) adapter via the (D) fixed combined piece, and (E) the combined line is electrically transmitted to the (C) adapter via the (E) fixed combined piece.

[0065] In summary, it is evident that after male connector A 4 and male connector B 5 are rotated by the same angle around their respective B-set 16 central axes, the signal points of the HDMI interface 6 of male connector A 4 and male connector B 5 remain completely identical after the HDMI interface 6 receives the input signal and transmits the output signal through the HDMI video transmission cable of this invention. This ensures that the signal transmission between male connector A 4 and male connector B 5 remains completely identical after rotating by the same angle around their respective B-set 16 central axes, allowing the HDMI video transmission cable of this invention to transmit signals completely normally. Furthermore, the types of the 19 electrical lines connecting the HDMI interfaces 6 of male connector A 4 and male connector B 5 remain unchanged after rotation, ensuring that the data lines, signal lines 3, and ground lines in the electrical connection each perform their respective functions, avoiding incorrect signal transmission via the ground line.

[0066] To ensure the accuracy of the rotation adjustment of male connector A 4 and male connector B 5 around their respective central axis of sleeve B 16, the present invention employs two methods: one is to use the indicator strip 55 to align with the corresponding marking strip 32 to ensure the accuracy of the rotation adjustment angle; the other is to use the arc elastic strip 18 and the locking head 36 to ensure the accuracy of the rotation adjustment angle by ensuring that they are fully repositioned in the corresponding arc groove A 44 after rotation adjustment.

[0067] Although the present invention has been described in conjunction with the above embodiments, the present invention is not limited to the above embodiments, but only to the appended claims. Those skilled in the art can easily modify and vary it without departing from the essential concept and scope of the present invention.

Claims

1. An HDMI video transmission cable based on ceramicized polymer materials, characterized in that: It includes a transmission line with a male connector A at one end and a male connector B at the other end; the transmission line has five sets of main lines and five sets of signal lines inside, each set of main lines has two core wires and one ground wire; the five sets of main lines and five sets of signal lines total 20 transmission wires; The aforementioned male connectors A and B are completely identical. Taking the structure of male connector A as an example: Male connector A includes an interface base, an A sleeve, a hollow outer spherical shell with a notch, a hollow inner spherical shell with a notch at one end of the A cylinder, an A-arc metal piece with a spherical surface at one end of the A straight metal piece, a hollow B spherical shell with a wire-locking sleeve at one end and a notch at the other end of the B sleeve, a B-ball at one end of the B cylinder, and a B-arc metal piece with a spherical surface at one end of the B straight metal piece. The B spherical shell has five circumferentially distributed strip-shaped spherical grooves around the central axis of the B sleeve, each containing a spherical arc elastic strip. The end of each arc elastic strip furthest from the B sleeve... The sphere has a locking head and a marking strip on its outer surface; the B-shell has a threaded hole on its outer surface at the end away from the B sleeve; the B-cylinder is fixedly assembled in the B sleeve, and the B-sphere is concentrically located in the B-shell; the outer cylindrical surface of the B-cylinder has 20 B-straight grooves evenly spaced circumferentially, and the outer spherical surface of the B-sphere has 20 spherical arc grooves evenly spaced circumferentially, with each of the 20 B-arc grooves communicating with the 20 B-straight grooves; the conical angle of the spherical surface formed by the ends of the 20 B-arc grooves away from the B-cylinder is between 45° and 60°; each B-straight groove contains a B-straight metal piece, and each B-arc groove contains a B-arc metal piece; Five spherical grooves (A-shaped grooves) are evenly distributed around the central axis of the outer shell (A-shaped shell). The outer shell has an indicator strip that mates with the marking strip. An interface socket is fixedly mounted at the end of the sleeve (A-shaped shell) furthest from the outer shell. One end of the interface socket has an HDMI interface, and the other end has two connectors. One connector has nine wiring holes, and the other has ten wiring holes; all wiring holes are electrically connected to the HDMI interface. The cylinder (A-shaped shell) is fixedly assembled within the sleeve (A-shaped shell), and the inner shell (A-shaped shell) is concentrically located within the outer shell (A-shaped shell). Twenty A-shaped grooves are evenly distributed around the outer surface of the cylinder (A-shaped shell). The inner spherical shell A has 20 A-arc through-slots evenly distributed around its circumferential surface, each of which connects to one of the 20 A-straight slots. Nineteen A-straight metal plates are installed in each of the 20 A-straight slots, and nineteen A-arc metal plates on each A-straight metal plate are installed in their respective A-arc through-slots. Each A-arc metal plate has a contact on its inner spherical surface at the end furthest from its corresponding A-straight metal plate. The inner and outer spherical shells A and A-outer spherical shells are rotatably mounted between spherical shells B and sphere B, and the outer and B spherical shells A and B are concentric. During the rotation of spherical shells B and B, the inner and outer spherical shells A and A-outer spherical shells will never detach from them. The contacts on the 19 A-arc metal plates are in electrical contact with the outer spherical surfaces of the 20 B-arc metal plates; the clips on the 5 arc elastic strips are respectively engaged with the 5 A-arc grooves; one end of the 19 A-straight metal plates is electrically connected to the 19 wiring holes on the two terminal boards; the fastening bolts are engaged with the threaded holes and with the A-outer spherical shell. One end of the aforementioned transmission line is snapped into the wire clip of the male connector A, and the other end is snapped into the wire clip of the male connector B; the 20 transmission wires at one end of the transmission line in the male connector A are electrically connected to the 20 straight metal plates B in the male connector A; the 20 transmission wires at one end of the transmission line in the male connector B are electrically connected to the 20 straight metal plates B in the male connector B. The insulation layer of the above 20 transmission wires is made of ceramicized polymer material.

2. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The aforementioned arc elastic strip swings along the center of the B-shell, and the face of the clip on the arc elastic strip facing the center of the B-shell is rounded. The entire assembly consisting of the B-sleeve, the B-shell, and the clip sleeve is divided into two equal halves, one of which is the B-sleeve. The outer surface of the B-sleeve has two symmetrical B-support plates. The two B-support plates on one B-sleeve correspond one-to-one with the two B-support plates on the other B-sleeve, and the two corresponding B-support plates are fixed by connecting bolts.

3. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The outer cylindrical surface of the aforementioned cylinder B is fixedly fitted with an inner ring B having a B-clamp end; the inner sleeve surface of the sleeve B is fixedly fitted with an outer ring B; the inner ring surface of the outer ring B has a ring B groove, and the inner groove surface of the ring B groove has a clamping groove B; the inner ring B is located in the ring B groove, and the clamping end B is located in the clamping groove B.

4. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The connection between the aforementioned cylinder B and sphere B uses a curved surface transition; the connection between the straight groove B and the corresponding arc groove B uses a curved groove transition; the connection between the arc metal sheet B and the straight metal sheet B uses a curved surface transition; the curved surface transition section between the arc metal sheet B and the straight metal sheet B completely fills the curved groove connecting the straight groove B and the corresponding arc groove B; the aforementioned arc metal sheet B completely fills the arc groove B, the straight metal sheet B completely fills the straight groove B, and the outer spherical surface of the arc metal sheet B and the outer spherical surface of the sphere B are cosmopolitan; the central surface of the sphere B perpendicular to the central axis of the aforementioned cylinder B is named the central reference surface B; the distance between the two sides of the arc metal sheet B at the intersection of the arc metal sheet B and the central reference surface B is the largest; the distance between the two sides of the arc metal sheet B along the central axis of the cylinder B from the central reference surface B towards the cylinder B gradually decreases; the distance between the two sides of the arc metal sheet B along the central axis of the cylinder B from the central reference surface B towards the direction away from the cylinder B gradually decreases.

5. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The outer cylindrical surface of the aforementioned cylinder A is fixedly fitted with an inner ring A having an A-clamp end; the inner sleeve surface of the sleeve A is fixedly fitted with an outer ring A; the inner ring surface of the outer ring A has an A-ring groove, and the inner groove surface of the A-ring groove has an A-clamp groove; the inner ring A is located in the A-ring groove, and the A-clamp end is located in the A-clamp groove.

6. An HDMI video transmission cable based on ceramicized polymer material according to claim 1 or 4, characterized in that: The connection between the aforementioned cylinder A and the inner spherical shell A adopts a curved surface transition; the connection between the straight groove A and the corresponding arc through groove A adopts a curved surface groove transition; the connection between the arc metal sheet A and the straight metal sheet A adopts a curved surface transition; the curved surface transition section between the arc metal sheet A and the straight metal sheet A completely fills the curved surface groove connecting the straight groove A and the corresponding arc through groove A; the aforementioned arc metal sheet A completely fills the arc through groove A, the straight metal sheet A completely fills the straight groove A, and the outer spherical surface of the arc metal sheet A and the outer spherical surface of the inner spherical shell A are cosmos; the central surface of the inner spherical shell A, which is perpendicular to the central axis of the aforementioned cylinder A, is named the central reference surface A; when the central axes of sleeve A and sleeve B are collinear, the contact point on the arc metal sheet A is located at the intersection of the central reference surface A and the arc metal sheet A.

7. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The entire assembly consisting of the aforementioned A-sleeve and A-outer spherical shell is divided into two halves, one of which is the A-half-sleeve. The outer surface of the A-half-sleeve has two symmetrical A-support plates. The two A-support plates on one A-half-sleeve correspond one-to-one with the two A-support plates on the other A-half-sleeve, and the two corresponding A-support plates are fixed by connecting bolts.

8. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The ceramicized polymer material mentioned above is ceramicized silicone rubber.

9. The HDMI video transmission cable based on ceramicized polymer material according to claim 1, characterized in that: The 20 transmission wires at one end of the transmission line in the male connector A are connected to the 20 straight metal tabs in the male connector A by soldering through 20 wires B. In the male connector A, the ends of the 19 straight metal tabs A away from the contacts are connected to the 19 wiring holes by soldering through 19 wires A. The 20 transmission wires at one end of the transmission line in the male connector B are connected to the 20 straight metal tabs in the male connector B by soldering through 20 wires B. In the male connector B, the ends of the 19 straight metal tabs A away from the contacts are connected to the 19 wiring holes by soldering through 19 wires A.

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