A data cable sheath die-cut explosion-proof cable structure

Abstract

This utility model discloses a data cable sheath molding explosion-proof cable structure, comprising: an outer connector; a braided cable body; an inner mold; an outer mold; an outer sheath; the inner mold has a first inclined surface and a second inclined surface formed on both sides respectively; a heat-sealing section is provided on the braided cable body near the outer connector end to prevent the cable from bursting. This utility model increases the slope of the inner mold by designing it with inclined surfaces on both sides, providing a smoother flow channel for the injection molding material, better filling the mold cavity, and effectively reducing the pressure on the tail braided cable during extrusion. In this utility model, a heat-sealing section is provided at the end of the braided cable body, and the outer mold is fitted around the heat-sealing section, effectively improving the strength of the joint, reducing the risk of fatigue fracture at the joint between the braided cable body and the inner mold during frequent bending and use, and improving the overall service life and reliability of the braided cable body.

Description

Technical fields:

[0001] This utility model relates to the field of data cable manufacturing technology, and specifically to a data cable sheath molding explosion-proof cable structure. Background technology:

[0002] With the development of the cable industry, the variety of cables has become increasingly diverse. Among them, braided cables, due to their excellent performance, are widely used in people's lives. However, in terms of usage scenarios, braided cables are frequently bent during daily use, making the junction between the sheath and the cable prone to fatigue breakage, thus shortening the lifespan of the braided cable. Furthermore, as the market's requirements for the appearance of data cables become increasingly stringent, traditional methods such as adding glue or burrs cannot conceal these defects.

[0003] The die-casting process for data cable sheaths is essentially a secondary injection molding process. It's like putting a soft silicone jacket over a hard plastic connector, protecting the cable and preventing it from bending. During processing, the data cable connector (such as a USB head) is usually injection molded from plastic first. Then, the hard core is placed into a mold, liquid silicone is injected, and it is pressed at high temperature. After cooling, it is removed and checked to ensure that the sheath is evenly wrapped and without damage. Finally, its durability is tested.

[0004] Currently available USB connectors can reduce the force during insertion and removal. For example, Chinese invention patent application CN104966962A discloses a USB connector and a USB device, which includes: an interconnected external connector and internal pins, and a mounting part. By setting the mounting part on the USB connector, and setting the fixing post and side ear on the mounting part, the structure of the USB connector is strengthened during installation through the fixing post and side ear, reducing the force on the pin solder joints during insertion and removal.

[0005] However, these existing USB connectors and USB devices still have the following shortcomings:

[0006] In this technical solution, the USB connector is reinforced during installation by fixing posts and side ears, but no structure is provided to prevent the braided wire from bursting. This results in poor flow of the molding compound during injection molding, and the molding compound exerts greater pressure on the tail braided wire during extrusion, causing the tail braided wire to burst, affecting the product's appearance and quality. Therefore, there is an urgent need to improve the mold structure for the injection molding of the braided wire sheath.

[0007] In view of the above, the inventors propose the following technical solution. Utility model content:

[0008] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a data cable sheath molding explosion-proof cable structure.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a data cable sheath molding explosion-proof cable structure, comprising: an outer connector; a braided cable body, the core wire segment of which is connected to the outer connector; an inner mold, which is disposed around the connection between the braided cable body and the outer connector; an outer mold, one end of which is matched and connected to the inner mold, and the other end of which is sleeved around the heat-sealing section of the braided cable body; an outer sheath, which is sleeved around the inner mold and the outer mold; the inner mold has a first inclined surface and a second inclined surface respectively formed on both sides; the braided cable body is provided with a heat-sealing section for preventing the cable from bursting at the end near the outer connector.

[0010] Furthermore, in the above technical solution, one end of the outer mold is provided with a first connecting hole for connecting with the inner mold, and the other end of the outer mold is formed with a first sleeve for wrapping around the periphery of the hot stamping section. The first connecting hole is formed with a third inclined surface and a fourth inclined surface for abutting and limiting the first inclined surface and the second inclined surface, respectively. The front end of the inner mold is also provided with a first positioning groove and a second positioning groove. Correspondingly, the first connecting hole is formed with a first positioning protrusion and a second positioning protrusion.

[0011] Furthermore, in the above technical solution, the outer sheath is provided with a second through hole, and the first sleeve passes through the second through hole and is fitted onto the hot-heating section.

[0012] Furthermore, in the above technical solution, the external connector includes a connecting block, an internal pin disposed within the connecting block for connecting with the braided yarn, and a metal sleeve covering the periphery of the connecting block, wherein the front end of the metal sleeve is provided with a first support portion for supporting the braided yarn.

[0013] Furthermore, in the above technical solution, the inner mold is integrally injection molded, and a first through hole for the braided yarn to pass through is formed on the inner mold; a first recessed groove for engaging with the outer connector is recessed on the inner mold, wherein a first engaging part for engaging in the first recessed groove is provided on the metal sleeve in a swingable manner.

[0014] Furthermore, in the above technical solution, the first snap-fit ​​portion is formed with a first bending segment and a second bending segment for bending and fitting onto the first inclined surface and the second inclined surface, respectively; the inner mold is provided with a first limiting groove and a second limiting groove, and the first snap-fit ​​portion is formed with a third bending segment and a fourth bending segment for bending and snapping into the first limiting groove and the second limiting groove, respectively.

[0015] Furthermore, in the above technical solution, the braided yarn includes a core segment, a braided section wrapped around the core segment, and a heat-sealing section for preventing the yarn from bursting, wherein the size of the heat-sealing section is smaller than the size of the braided section.

[0016] Furthermore, in the above technical solution, the outer mold has a recessed third positioning groove and a fourth positioning groove, and correspondingly, the outer sheath has a protruding third positioning protrusion and a fourth positioning protrusion.

[0017] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: In this utility model, by designing the inner mold with inclined surfaces on both sides, the slope of the two sides is increased, providing a smoother flow channel for the injection molding material, significantly reducing the resistance when the material is fed in, effectively improving the flow of the material during injection molding, and enabling better filling of the mold cavity. This also effectively reduces the pressure on the tail braided thread during extrusion. Furthermore, compared with existing structures, this utility model has a heat-sealing section at the end of the braided thread, and the outer mold is fitted around the heat-sealing section, effectively improving the strength of the joint and reducing the risk of fatigue fracture at the joint between the braided thread and the inner mold during frequent bending and use, thus improving the overall service life and reliability of the braided thread. Moreover, it meets high appearance requirements, eliminating the need to cover defects by adding glue or burrs, thereby enhancing the product's market competitiveness. Attached image description:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is an exploded structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the external connector in this utility model;

[0021] Figure 4 This is a schematic diagram of the inner mold structure in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the outer mold in this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the outer sheath in this utility model. Detailed implementation method:

[0024] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0025] See Figures 1 to 6The diagram shows a data cable sheath molding explosion-proof cable structure, comprising: an outer connector 1; a braided cable body 2, the core wire segment 21 of which is connected to the outer connector 1; an inner mold 3, which is disposed around the connection between the braided cable body 2 and the outer connector 1; an outer mold 4, one end of which is matched and connected to the inner mold 3, and the other end of which is sleeved around the heat-sealed section 23 of the braided cable body 2; and an outer sheath 5, which is sleeved around the inner mold 3 and the outer mold 4. The inner mold 3 has a first inclined surface 31 and a second inclined surface 32 formed on both sides. The braided cable body 2 has a heat-sealed section 23 near the outer connector 1 to prevent bursting. Here, the heat-sealed section 23 is the braided cable body 2 after heat shrinkage treatment, which can better adapt to the extrusion of the rubber material during injection molding, reducing the risk of bursting at the tail due to rubber material extrusion, and also providing a more stable foundation for subsequent mold forming.

[0026] In this invention, by designing the inner mold 3 with beveled sides, the slope of its two sides is increased, providing a smoother flow channel for the injection molding material. This significantly reduces the resistance during material feeding, effectively improving the flow of the material during injection molding, allowing for better filling of the mold cavity, and effectively reducing the pressure on the tail braided thread during extrusion. Furthermore, compared to existing structures, this invention features a heat-sealing section 23 at the end of the braided thread 2, with the outer mold 4 surrounding the heat-sealing section 23. This effectively enhances the strength of the joint, reducing the risk of fatigue fracture at the joint between the braided thread 2 and the inner mold 3 during frequent bending, and improving the overall service life and reliability of the braided thread 2. Moreover, it meets high appearance requirements, eliminating the need to cover defects with glue or added burrs, thus enhancing the product's market competitiveness.

[0027] One end of the outer mold 4 is provided with a first connecting hole 41 for connecting with the inner mold 3, and the other end of the outer mold 4 is formed with a first sleeve 42 for wrapping around the hot-pressing section 23. The first connecting hole 41 is formed with a third inclined surface 43 and a fourth inclined surface 44 for respectively abutting and limiting the first inclined surface 31 and the second inclined surface 32. The outer sheath 5 has a second through hole 52, through which the first sleeve 42 passes and is fitted onto the hot-pressing section 23. Here, the first sleeve 42 of the outer mold 4 wraps around the hot-pressing section 23, providing further protection to the outside of the hot-pressing section 23, effectively reducing the risk of fatigue breakage of the braided yarn 2 during frequent bending. In addition, the third inclined surface 43 and the fourth inclined surface 44 can respectively press and limit the first inclined surface 31 and the second inclined surface 32, facilitating assembly and production management.

[0028] The inner mold 3 also has a first positioning groove 310 and a second positioning groove 320 at its front end. Correspondingly, a first positioning protrusion 410 and a second positioning protrusion 420 are formed protruding from the first connecting hole 41. Here, the first positioning protrusion 410 and the second positioning protrusion 420 respectively cooperate with the first positioning groove 310 and the second positioning groove 320, effectively preventing the inner mold 3 from accidentally sliding in the outer mold 4 and effectively improving the overall stability.

[0029] Combination Figure 3 The external connector 1 shown includes a connecting block 11, an internal pin 12 disposed within the connecting block 11 for connection with the braided yarn 2, and a metal sleeve 12 surrounding the connecting block 11. The metal sleeve 12 has a first support portion 13 at its front end for supporting the braided yarn 2. Here, the first support portion 13 extends outward from the metal sleeve 12 and is arc-shaped. It covers and supports the heat-sealed section 23 of the braided yarn 2, preventing excessive friction and compression between the braided yarn 2 and the side of the metal sleeve 12 due to frequent bending during use, thus effectively extending its service life.

[0030] The inner mold 3 is integrally injection molded, and a first through hole 310 for the braided yarn 2 to pass through is formed on the inner mold 3. A first recessed groove 320 for engaging with the outer connector 1 is recessed on the inner mold 3. The metal sleeve 12 is provided with a first engaging part 120 that can be oscillating and engaging within the first recessed groove 320. Here, a first bent part 121 that is thinner than the first engaging part 120 is provided at the connection between the first engaging part 120 and the metal sleeve 12, so that the first engaging part 120 can be bent and engaged with the inner mold 3. Before assembly, the first engaging part 120 is generally raised and approximately perpendicular to the metal sleeve 12. After the inner mold 3 is placed on the metal sleeve 12, the first engaging part 120 is pressed down, causing it to swing downward along the first bent part 121 and fit into the first recessed groove 320.

[0031] The first snap-fit ​​portion 120 is formed with a first bending segment 121 and a second bending segment 122 for bending and fitting onto the first inclined surface 31 and the second inclined surface 32, respectively. The inner mold 3 is provided with a first limiting groove 301 and a second limiting groove 302. The first snap-fit ​​portion 120 is formed with a third bending segment 123 and a fourth bending segment 124 for bending and snapping into the first limiting groove 301 and the second limiting groove 302, respectively. Here, after the first snap-fit ​​portion 120 fits into the first recessed groove 320, the first bending segment 121 and the second bending segment 122, as well as the third bending segment 123 and the fourth bending segment 124 are pressed downwards, so that the first snap-fit ​​portion 120 is further firmly fixed onto the inner mold 3.

[0032] The braided yarn body 2 includes a core yarn segment 21, a braided section 22 wrapped around the core yarn segment 21, and a heat-sealing section 23 for preventing the yarn from bursting, wherein the size of the heat-sealing section 23 is smaller than the size of the braided section 22.

[0033] The outer mold 4 has a recessed third positioning groove 403 and a fourth positioning groove 404, and correspondingly, the outer sheath 5 has a protruding third positioning protrusion 430 and a fourth positioning protrusion 440. Here, the third positioning protrusion 430 and the fourth positioning protrusion 440 respectively fit into the third positioning groove 403 and the fourth positioning groove 404, which can effectively prevent the outer mold 4 from accidentally sliding within the outer sheath 5, and effectively improve the overall stability.

[0034] In summary, this invention, by designing the inner mold 3 with beveled sides, increases the slope of its sides, providing a smoother flow channel for the injection molding material, significantly reducing the resistance during material feeding, effectively improving the flow of the material during injection, better filling the mold cavity, and effectively reducing the pressure on the tail braided thread during extrusion. Furthermore, compared to existing structures, this invention features a heat-sealing section 23 at the end of the braided thread 2, with the outer mold 4 surrounding the heat-sealing section 23. This effectively enhances the strength of the joint, reduces the risk of fatigue fracture at the joint between the braided thread 2 and the inner mold 3 during frequent bending, and improves the overall service life and reliability of the braided thread 2. Moreover, it meets high appearance requirements, eliminating the need to cover defects with glue or added burrs, thus enhancing the product's market competitiveness.

[0035] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A data cable sheath molding explosion-proof cable structure, comprising: External connector (1); The braided yarn (2) has its core segment (21) at the end connected to the outer connector (1); The inner mold (3) is located on the periphery of the connection between the braided yarn (2) and the outer connector (1); The outer mold (4) is matched and connected to the inner mold (3) at one end, and its other end is fitted around the hot-stamped section (23) of the braided yarn body (2); The outer sheath (5) is fitted around the inner mold (3) and the outer mold (4); Its features are, The inner mold (3) has a first inclined surface (31) and a second inclined surface (32) formed on both sides respectively; the braided yarn (2) has a heat-sealing section (23) near the outer connector (1) to prevent the yarn from bursting.

2. The explosion-proof cable structure with a die-cast sheath as described in claim 1, characterized in that: One end of the outer mold (4) is provided with a first connecting hole (41) for connecting with the inner mold (3), and the other end of the outer mold (4) is formed with a first sleeve (42) for wrapping around the hot heat section (23). The first connecting hole (41) is formed with a third inclined surface (43) and a fourth inclined surface (44) for abutting and limiting the first inclined surface (31) and the second inclined surface (32) respectively. The front end of the inner mold (3) is also provided with a first positioning groove (310) and a second positioning groove (320). Correspondingly, the first positioning protrusion (410) and the second positioning protrusion (420) are formed in the first connecting hole (41).

3. The explosion-proof cable structure with die-cast sheath as described in claim 2, characterized in that: The outer sheath (5) has a second through hole (52), and the first sleeve (42) passes through the second through hole (52) and is fitted onto the hot-heating section (23).

4. The explosion-proof cable structure with die-cast sheath as described in claim 1, characterized in that: The external connector (1) includes a connecting block (11), an internal pin (12) disposed inside the connecting block (11) and used for connecting with the braided yarn (2), and a metal sleeve (12) wrapped around the periphery of the connecting block (11), wherein the front end of the metal sleeve (12) is provided with a first support part (13) for supporting the braided yarn (2).

5. The explosion-proof cable structure with die-cast sheath as described in claim 4, characterized in that: The inner mold (3) is integrally injection molded. The inner mold (3) has a first through hole (310) for the braided yarn (2) to pass through. The inner mold (3) has a first recessed groove (320) for engaging with the outer connector (1). The metal sleeve (12) has a first engaging part (120) for engaging in the first recessed groove (320) in a swingable manner.

6. The explosion-proof cable structure with a die-cast sheath as described in claim 5, characterized in that: The first snap-fit ​​portion (120) is formed with a first bending segment (121) and a second bending segment (122) for bending and fitting onto the first inclined surface (31) and the second inclined surface (32), respectively; the inner mold (3) is provided with a first limiting groove (301) and a second limiting groove (302), and the first snap-fit ​​portion (120) is formed with a third bending segment (123) and a fourth bending segment (124) for bending and snapping into the first limiting groove (301) and the second limiting groove (302), respectively.

7. The explosion-proof cable structure with die-cast sheath as described in claim 1, characterized in that: The braided yarn body (2) includes a core yarn segment (21), a braided section (22) wrapped around the core yarn segment (21), and a heat-sealing section (23) for preventing the yarn from bursting, wherein the size of the heat-sealing section (23) is smaller than the size of the braided section (22).

8. The explosion-proof cable structure with die-cast sheath according to any one of claims 1-7, characterized in that: The outer mold (4) has a recessed third positioning groove (403) and a fourth positioning groove (404), and correspondingly, the outer sheath (5) has a protruding third positioning protrusion (430) and a fourth positioning protrusion (440).

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