Prefabricated end-forming butterfly-shaped leading-in optical cable with crimping mechanism

Abstract

The utility model discloses a prefabricated end-forming butterfly-shaped leading-in optical cable with a crimping mechanism, which comprises a first connecting seat and a second connecting seat, the second connecting seat is arranged above the first connecting seat, and optical cable bodies are fixedly arranged on one side of the outside of the first connecting seat and one side of the outside of the second connecting seat. The front end and the rear end of the interior of the second connecting seat are each provided with three positioning grooves, the positioning grooves are of a penetrating type structure, the front end and the rear end of the upper end of the first connecting seat are each fixedly provided with three fixing hooks, the fixing hooks extend into the positioning grooves, and clamping plates are fixedly arranged in the positions, located at the lower ends of the fixing hooks, of the positioning grooves; according to the structure, the problems that the connection of the optical cable is not convenient enough and the protection performance of the optical cable is not good enough are solved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly-shaped drop optical cable technology, specifically a pre-formed end butterfly-shaped drop optical cable with a crimping mechanism. Background Technology

[0002] Pre-terminated butterfly drop cables are optical cable products specifically designed for fiber-to-the-home (FTTH) and other access networks. These cables are butterfly-shaped optical cables with one or both connectors pre-fabricated in the factory. They mainly consist of the butterfly cable body and pre-fabricated fiber optic connectors. Reinforcing cores are provided on both sides of the cable to improve its tensile strength. Pre-terminated butterfly drop cables with crimping mechanisms are butterfly-shaped optical cables with one or both connectors pre-fabricated in the factory and equipped with crimping mechanisms to achieve cable connection.

[0003] For example, Chinese patent CN211236366U, entitled "A Novel Pre-formed Ended Butterfly-shaped Drop-in Optical Cable," includes an optical cable body. A waterproof material is provided on the inner wall of the optical cable body, and a triangular fixing device is provided at the center of the optical cable body. Flame-retardant rubber is filled between the triangular fixing device and the waterproof material, and shaping reinforcements are provided at the three apex corners of the triangular fixing device. The optical cable body is wrapped around the center of a sheath, and the cross-section of the sheath is U-shaped. Strength elements are symmetrically arranged on the upper and lower sides of the optical cable body. A set of optical cable bodies is provided, each optical cable body is equipped with the sheath, and strength elements are evenly arranged between every two optical cable bodies.

[0004] While the aforementioned existing technologies can achieve optical cable connections, in practical use, on the one hand, the connection of optical cables is not convenient enough. Optical cables are usually connected by welding or fusion splicing, which means that each connection requires welding, thus reducing the connection efficiency. On the other hand, the protective performance of optical cables is not good enough. After installation, optical cables are directly exposed to the environment, making them susceptible to external factors and reducing their service life. Therefore, they do not meet current needs. In response, we propose a pre-terminated butterfly drop optical cable with a crimping mechanism. Utility Model Content

[0005] The purpose of this invention is to provide a pre-terminated butterfly-shaped drop cable with a crimping mechanism to solve the problems of inconvenient connection and poor protection performance of optical cables mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pre-formed end-capped butterfly-shaped optical cable with a crimping mechanism, comprising a first connecting seat and a second connecting seat, the second connecting seat being disposed above the first connecting seat, an optical cable body being fixedly disposed on one side of both the first and second connecting seats, three positioning grooves being provided at the front and rear ends of the second connecting seat, the positioning grooves having a through-type structure, three fixing hooks being fixedly disposed at the front and rear ends of the upper end of the first connecting seat, the fixing hooks extending into the interior of the positioning grooves, a snap-fit ​​plate being fixedly disposed inside the positioning grooves located at the lower end of the fixing hooks, the fixing hooks being snap-fitted and fixed with the snap-fit ​​plate.

[0007] Preferably, a conductive plate is fixedly provided at the lower end of the second connector, and the conductive plate is electrically connected to the optical cable body. A conductive groove is provided at the center of the first connector, and the conductive groove corresponds to the position of the conductive plate.

[0008] Preferably, a sealing ring is fixedly provided on the upper end of the first connecting seat located outside the conductive groove and on one side of the second connecting seat.

[0009] Preferably, the optical cable body is composed of a cable core and a composite wear-resistant layer. The composite wear-resistant layer is disposed outside the cable core. The cable core is composed of a wire core, a sheath, and a composite waterproof layer. A filling layer is disposed in the gap between the sheath and the composite waterproof layer. Reinforcing ribs are disposed on both sides inside the sheath and on the top and bottom outside the sheath.

[0010] Preferably, the outer sleeve of the wire core is provided with a cover.

[0011] Preferably, the composite waterproof layer consists of a waterproof outer layer, a waterproof reinforcing layer, and a waterproof base layer. The waterproof base layer is sleeved on the outside of the sheath, the waterproof reinforcing layer is wrapped around the outside of the waterproof base layer, and the waterproof outer layer is extruded on the outside of the waterproof reinforcing layer.

[0012] Preferably, the composite wear-resistant layer consists of a wear-resistant outer layer, a wear-resistant reinforcing layer, and a wear-resistant inner layer. The wear-resistant inner layer is wrapped around the outside of the waterproof outer layer, the waterproof reinforcing layer is wrapped around the outside of the wear-resistant inner layer, and the wear-resistant outer layer is extruded around the outside of the wear-resistant reinforcing layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model can quickly connect two optical cables through the first connecting seat and the second connecting seat. When the optical cable is connected, the optical cable on the first connecting seat has been fixed. At this time, the operator holds the second connecting seat and pulls it until the second connecting seat is directly above the first connecting seat. Then, the second connecting seat is moved downward. During the downward movement of the second connecting seat, the fixing hook on the first connecting seat will enter the interior of the positioning groove until the lower end of the snap plate contacts the fixing hook. Continue to move the second connecting seat downward so that the fixing hook is squeezed and bent and moves to the upper end of the snap plate. At this time, the first connecting seat and the second connecting seat are pressed and fixed. At the same time, the conductive plate contacts the conductive groove, thereby improving the convenience of optical cable connection.

[0015] (2) This utility model improves the waterproof performance of optical cables by setting a composite waterproof layer. The waterproof outer layer can prevent water from entering the cable core. Long-term water intrusion into the optical cable will lead to increased fiber attenuation and affect the transmission quality of communication signals. The waterproof outer layer can effectively prevent water from entering the optical cable and keep the optical fiber in a dry state, thereby maintaining stable communication quality. During the transmission of optical cables, static electricity may accumulate on the surface or inside of the optical cable, interfering with the optical signal and causing signal distortion or transmission errors. By setting a waterproof reinforcement layer, the interference of static electricity accumulation on the optical signal inside the optical cable is avoided, thereby improving the anti-interference ability of the optical cable. During the laying, use and maintenance of optical cables, they may be subjected to various external forces, such as stretching, squeezing and bending. The waterproof base layer can effectively resist these external forces and prevent the optical cable from breaking or degrading due to mechanical damage.

[0016] (3) The composite wear-resistant layer of this utility model can improve the wear resistance of the cable. By setting the wear-resistant outer layer, the optical cable can maintain the integrity of the structure in harsh environments, reduce the damage to the optical cable caused by wear, thereby reducing the failure rate of the optical cable and reducing maintenance costs. When a fire occurs, the wear-resistant reinforcement layer can effectively prevent the transmission of flames and heat, thereby preventing the fire from spreading along the optical cable. It can not only protect the optical cable itself from fire damage, but also reduce the impact of the fire on the surrounding environment and equipment. At the same time, the wear-resistant reinforcement layer can isolate the direct impact of high temperature on the optical fiber, protect the optical fiber from the fire and ensure the normal operation of the communication system. In some specific environments, the optical cable may be bitten by insects. These insects may bite through the outer sheath of the optical cable and then come into contact with the optical fiber and other components inside the optical cable, causing damage to the optical cable or communication interruption. The setting of the wear-resistant inner layer can effectively block the biting of insects and protect the integrity of the optical cable. Attached Figure Description

[0017] Figure 1 This is an exploded view of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0019] Figure 3 This is a partial enlarged view of the composite waterproof layer of this utility model;

[0020] Figure 4 This is a partial enlarged view of the composite wear-resistant layer of this utility model.

[0021] In the diagram: 1. First connector; 2. Second connector; 3. Optical cable body; 4. Sealing ring; 5. Fixing hook; 6. Conductive groove; 7. Positioning groove; 8. Clip plate; 9. Conductive plate; 10. Cable core; 11. Sheath; 12. Wire core; 13. Enclosure; 14. Filler layer; 15. Composite waterproof layer; 1501. Waterproof outer layer; 1502. Waterproof reinforced layer; 1503. Waterproof base layer; 16. Composite wear-resistant layer; 1601. Wear-resistant outer layer; 1602. Wear-resistant reinforced layer; 1603. Wear-resistant inner layer; 17. Reinforcing rib. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a pre-formed end-capped butterfly-shaped optical cable with a crimping mechanism, comprising a first connecting seat 1 and a second connecting seat 2. The second connecting seat 2 is disposed above the first connecting seat 1. An optical cable body 3 is fixedly disposed on one side of both the first connecting seat 1 and the second connecting seat 2. A conductive plate 9 is fixedly disposed at the lower end of the second connecting seat 2, and the conductive plate 9 is electrically connected to the optical cable body 3. A conductive groove 6 is disposed at the center of the first connecting seat 1, and the conductive groove 6 corresponds to the position of the conductive plate 9. The upper end of the first connecting seat 1 outside the conductive groove 6 and one side of the second connecting seat 2 are both located on the second connecting seat 2. A sealing ring 4 is fixedly installed. The optical cable body 3 is composed of a cable core 10 and a composite wear-resistant layer 16. The composite wear-resistant layer 16 is set outside the cable core 10. The cable core 10 is composed of a wire core 12, a sheath 11 and a composite waterproof layer 15. A filling layer 14 is provided in the gap between the sheath 11 and the composite waterproof layer 15. Reinforcing ribs 17 are provided on both sides inside the sheath 11 and on the top and bottom outside the sheath 11. A cover 13 is sleeved on the outside of the wire core 12. The sheath 11 is made of low smoke halogen-free flame retardant material, the filling layer 14 is made of water-blocking fiber paste, the reinforcing ribs 17 are made of galvanized steel wire, and the cover 13 is made of glass material.

[0024] Please see Figure 1The front and rear ends of the second connector 2 are provided with three positioning slots 7. The positioning slots 7 have a through structure. The front and rear ends of the upper end of the first connector 1 are fixedly provided with three fixing hooks 5. The fixing hooks 5 extend into the interior of the positioning slots 7. The positioning slots 7 are located inside the lower end of the fixing hooks 5 and are fixedly provided with a snap-fit ​​plate 8. The fixing hooks 5 and the snap-fit ​​plate 8 are snapped together and fixed, which facilitates the quick fixing of the optical cable through the positioning slots 7 and the fixing hooks 5.

[0025] Please see Figure 2 and Figure 3 The composite waterproof layer 15 consists of a waterproof outer layer 1501, a waterproof reinforcing layer 1502, and a waterproof base layer 1503. The waterproof base layer 1503 is sleeved on the outside of the sheath 11, the waterproof reinforcing layer 1502 is wrapped around the outside of the waterproof base layer 1503, and the waterproof outer layer 1501 is extruded on the outside of the waterproof reinforcing layer 1502. The waterproof outer layer 1501 is made of aluminum foil and polyethylene composite material, the waterproof reinforcing layer 1502 is made of glass fiber yarn, and the waterproof base layer 1503 is made of shape memory alloy. This composite waterproof layer 15 facilitates the improvement of the waterproof performance of the optical cable.

[0026] Please see Figure 2 and Figure 4 The composite wear-resistant layer 16 consists of a wear-resistant outer layer 1601, a wear-resistant reinforcing layer 1602, and a wear-resistant inner layer 1603. The wear-resistant inner layer 1603 is wrapped around the outside of the waterproof outer layer 1501, the waterproof reinforcing layer 1502 is wrapped around the outside of the wear-resistant inner layer 1603, and the wear-resistant outer layer 1601 is extruded around the outside of the wear-resistant reinforcing layer 1602. The wear-resistant outer layer 1601 is made of PET material, the wear-resistant reinforcing layer 1602 is made of glass fiber cloth impregnated with metal oxide, and the wear-resistant inner layer 1603 is made of absorbent cotton impregnated with insect repellent. This composite wear-resistant layer 16 facilitates the improvement of the wear resistance of the optical cable.

[0027] Working principle: During use, the optical cable on the first connector 1 has been fixed. At this time, the operator holds the second connector 2 and pulls it until the second connector 2 is directly above the first connector 1. Then, the second connector 2 is moved downward. During the downward movement of the second connector 2, the fixing hook 5 on the first connector 1 will enter the interior of the positioning groove 7 until the lower end of the snap-fit ​​plate 8 contacts the fixing hook 5. Continue to move the second connector 2 downward, so that the fixing hook 5 is squeezed and bent and moves to the upper end of the snap-fit ​​plate 8. At this time, the first connector 1 and the second connector 2 are pressed and fixed, and the conductive plate 9 contacts the conductive groove 6.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A preterminated butterfly drop cable with a crimping mechanism, comprising a first connector housing (1) and a second connector housing (2), the second connector housing (2) being arranged above the first connector housing (1), characterized in that: The first connecting seat (1) and the second connecting seat (2) are fixedly provided with an optical cable body (3) on one side, the front and rear ends of the second connecting seat (2) are provided with three positioning grooves (7), the positioning grooves (7) are in a penetrating structure, the front and rear ends of the upper end of the first connecting seat (1) are fixedly provided with three fixed hooks (5), the fixed hooks (5) extend into the positioning grooves (7), and the positioning grooves (7) are fixedly provided with a clamping plate (8) in the inner bottom of the fixed hooks (5).

2. The preterminated, butterfly drop cable with a crimping mechanism of claim 1, wherein: The second connecting seat (2) is fixedly provided with a conductive plate (9) at the lower end, the conductive plate (9) is electrically connected with the optical cable body (3), and the center of the first connecting seat (1) is provided with a conductive groove (6) in position correspondence with the conductive plate (9).

3. The preterminated, butterfly drop cable with a crimping mechanism of claim 2, wherein: The upper end of the first connecting seat (1) located outside the conductive groove (6) and one side of the second connecting seat (2) are fixedly provided with a sealing ring (4).

4. The preterminated, butterfly drop cable with a crimping mechanism of claim 3, wherein: The optical cable body (3) is composed of a cable core (10) and a composite wear-resistant layer (16), the composite wear-resistant layer (16) is arranged outside the cable core (10), the cable core (10) is composed of a wire core (12), a sheath (11) and a composite waterproof layer (15), a filling layer (14) is arranged in the gap between the sheath (11) and the composite waterproof layer (15), and the two sides of the sheath (11) and the upper and lower sides of the sheath (11) are provided with reinforcing ribs (17).

5. The preterminated, butterfly drop cable with a crimping mechanism of claim 4, wherein: The wire core (12) is externally sleeved with an envelope (13).

6. The preterminated butterfly drop cable with a crimping mechanism of claim 5, wherein: The composite waterproof layer (15) is composed of a waterproof outer layer (1501), a waterproof reinforcing layer (1502) and a waterproof base layer (1503), the waterproof base layer (1503) is sleeved outside the sheath (11), the waterproof reinforcing layer (1502) is wrapped outside the waterproof base layer (1503), and the waterproof outer layer (1501) is extrusion-wrapped outside the waterproof reinforcing layer (1502).

7. The preterminated butterfly drop cable with a crimping mechanism of claim 6, wherein: The composite wear-resistant layer (16) is composed of a wear-resistant outer layer (1601), a wear-resistant reinforcing layer (1602) and a wear-resistant inner layer (1603), the wear-resistant inner layer (1603) is wrapped outside the waterproof outer layer (1501), the waterproof reinforcing layer (1502) is wrapped outside the wear-resistant inner layer (1603), and the wear-resistant outer layer (1601) is extrusion-wrapped outside the wear-resistant reinforcing layer (1602).

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