Prefabricated end-forming butterfly-shaped leading-in optical cable capable of being disassembled through wall

Abstract

The utility model discloses a prefabricated end-forming butterfly-shaped leading-in optical cable capable of being disassembled through a wall, which comprises a butterfly-shaped leading-in optical cable, the terminal of the butterfly-shaped leading-in optical cable is connected with a terminal optical fiber movable connector, and the home-entry end of the butterfly-shaped leading-in optical cable is connected with a home-entry end optical fiber movable connector; the home-entry end optical fiber movable connector comprises an outer shell, an inner shell, an insertion core and a tail sleeve. The outer shell detachably sleeves the inner shell. The home-entry end optical fiber movable connector further comprises a protective shell, the head end of the protective shell is a threading part, and the tail end of the protective shell is a sleeving part which can be sleeved on the inner shell. By changing the pre-assembly form of the prefabricated end butterfly-shaped optical cable connector, during home-entry assembly, field personnel can directly assemble the outer shell by disassembling the protective shell at the home-entry end for use, the field manual operation time is greatly shortened, convenience and rapidness are achieved, and meanwhile the problem that the optical performance is prone to being unstable during field welding assembly is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical fiber communication, and specifically relates to a prefabricated end butterfly-shaped drop cable capable of being disassembled through a wall. BACKGROUND

[0002] The butterfly-shaped optical cable is a new type of user access optical cable, and according to different application environments and laying conditions, the cable structure and various technical parameters are reasonably designed, the characteristics of indoor soft optical cable and self-supporting optical cable are combined, special equipment is used in cooperation with imported precision molds for production, and the butterfly-shaped optical cable is the best optional product for solving FTTX (Fiber To The x) network, and plays a unique role in the network of intelligent buildings, digital communities, campus networks and local area networks.

[0003] The prefabricated end butterfly-shaped drop cable refers to the butterfly-shaped optical cable that is installed on site, and the optical fiber active connector (generally SC / UPC type, single end) is manufactured and installed at one end or both ends in the factory when the optical cable penetrates through the wall and enters the house, and is widely used in the user drop section of the FTTH (Fiber To The Home) network, and is also suitable for the user drop section of the FTTO (Fiber To The Office) and FTTB (Fiber To The Building) network and other optical fiber access networks.

[0004] The conventional prefabricated end butterfly-shaped optical cable is generally used for entering the house first, and then assembled or fused on site in order to meet the requirement that the optical fiber is not damaged when penetrating through the wall during the network user drop; in this way, on the one hand, the construction is inconvenient, and on the other hand, the on-site fusion assembly may cause instability of the optical performance. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing a prefabricated end butterfly-shaped drop cable capable of being disassembled through a wall, which is convenient to use when penetrating through the wall and entering the house by adding heads at both ends when leaving the factory.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a prefabricated butterfly-shaped optical cable that can be disassembled through a wall includes a butterfly-shaped optical cable, one end of the butterfly-shaped optical cable is a terminal, and the other end is a home-entry end; the terminal of the butterfly-shaped optical cable is connected to a terminal optical fiber active connector, and the home-entry end of the butterfly-shaped optical cable is connected to a home-entry optical fiber active connector; the home-entry optical fiber active connector includes an outer shell, an inner shell, a core and a tail sleeve, and the outer shell is detachably mounted on the inner shell; the home-entry optical fiber active connector also includes a protective shell, the head end of the protective shell is a threading part, and the tail end of the protective shell is a sleeve part that can be mounted on the inner shell; when the prefabricated butterfly-shaped optical cable is passed through the wall, the protective shell is mounted on the inner shell; when the prefabricated butterfly-shaped optical cable is passed through the wall, the protective shell is removed and the outer shell is mounted on the inner shell.

[0007] As a preferred technical solution, the penetration portion is tapered.

[0008] As a preferred technical solution, the protective shell has a transition protection portion between the lead-through portion and the sleeve portion.

[0009] As a preferred technical solution, the protective shell is a metal shell.

[0010] Due to the adoption of the above-mentioned technical solution, the present invention has at least the following beneficial effects: by changing the pre-assembly form of the prefabricated butterfly-shaped optical cable connector, optical fiber active connectors are added to the terminal and the household entrance at the factory, ensuring stable optical performance while effectively protecting the quality of the connector. During household assembly, there is no need to assemble the connector on-site using quick connectors or fusion splicing with prefabricated fiber pigtails. On-site users can directly assemble the outer shell by disassembling the metal protective shell at the household entrance, greatly reducing on-site manual operation time, making it convenient and quick, while also avoiding the problem of unstable optical performance caused by on-site fusion assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the housing of the fiber optic active connector at the home end;

[0014] Figure 3 This is a schematic diagram of the structure of the protective shell in the fiber optic active connector at the home end;

[0015] Figure 4 This is a schematic diagram of the structure of the fiber optic active connector at the home end after removing the outer shell and protective shell;

[0016] Figure 5 This is a reference diagram of the protective shell when it is installed on the inner shell;

[0017] Figure 6 This is a reference diagram of the state when the outer shell is put on the inner shell after removing the protective shell. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings and examples. In the detailed description that follows, certain exemplary embodiments of the present invention are described by way of illustration only. It goes without saying that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0019] like Figure 1 As shown, the prefabricated butterfly-shaped optical cable that can be removed through the wall includes a butterfly-shaped optical cable 10, one end of which is a terminal ( Figure 1 The left end shown), the other end is the entrance end ( Figure 1 The terminal of the butterfly-shaped optical cable 10 is connected to the terminal optical fiber active connector 20, and the household end of the butterfly-shaped optical cable 10 is connected to the household optical fiber active connector 30. In this embodiment, the terminal optical fiber active connector 20 and the household optical fiber active connector 30 are both SC-type optical fiber connectors.

[0020] refer to Figure 2 and Figure 4 The fiber optic active connector 30 at the entrance to the home comprises an outer shell 31, an inner shell 32, a ferrule 33, and a tail sleeve 34. The outer shell 31 is made of plastic and is compatible with the inner shell 32, being removably mounted thereon. Anti-slip grooves 311 are formed inwardly on the outer wall of the outer shell 31 to facilitate the connection operation. The structure of the terminal fiber optic active connector 20 is identical to that of the aforementioned fiber optic active connector 30 at the entrance to the home, and will not be further described here.

[0021] refer to Figure 3 The household fiber optic active connector 30 also includes a protective shell 35, which is preferably made of metal. The head end of the protective shell 35 is a tapered lead-in portion 351, which facilitates wall penetration protection and impact use through the tapered lead-in portion 351; the tail end of the protective shell 35 is a sleeve portion 352 that can be fitted on the inner shell 32, and the sleeve portion 352 is adapted to the outer wall of the inner shell 32. The two can be plugged together, which is convenient for replacement with the outer shell 31 after disassembly; the protective shell 35 has a transition protection portion 353 between the lead-in portion 351 and the sleeve portion 352, which can protect the ferrule 33 when passing through the wall.

[0022] Reference Figure 1 , Figure 5 and Figure 6 , the prefabricated end butterfly-shaped lead-in optical cable is packaged on the inner shell 32 at the factory, so that the connector can be effectively protected during the wall-to-house connection; during the house-to-house assembly, it is not necessary to use a quick connector for on-site assembly or to be fused by a prefabricated end fiber. The on-site user can use it by disassembling the metal protective shell 35 and then assembling the SC type shell 31, greatly reducing the on-site manual operation time, being convenient and fast, and avoiding the problem of unstable optical performance caused by on-site fusion assembly.

[0023] The above merely describes the specific embodiments of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present application shall fall within the scope of the present application.

Claims

1. A preformed end butterfly drop cable which can be removed through the wall, comprising a butterfly drop cable, one end of the butterfly drop cable being a terminal end, the other end being a home end; a terminal optical fiber movable connector being connected to the terminal end of the butterfly drop cable, a home end optical fiber movable connector being connected to the home end of the butterfly drop cable; characterized in that: The indoor end fiber active connector comprises a shell, an inner shell, a ferrule and a tail sleeve, the shell is detachably sleeved on the inner shell; the indoor end fiber active connector further comprises a protective shell, a head end of the protective shell is a lead-through part, a tail end of the protective shell is a sleeving part which can be sleeved on the inner shell; when the prefabricated end butterfly-shaped lead-in optical cable is led through the wall, the protective shell is sleeved on the inner shell; after the prefabricated end butterfly-shaped lead-in optical cable is led through the wall, the protective shell is detached and the shell is sleeved on the inner shell.

2. The preformed end finish optical cable of claim 1, wherein: The lead-through part is conical.

3. The wall-penetrable, prefabricated butterfly-shaped drop optical cable according to claim 2, characterized in that: The protective shell has a transition protection part between the lead-through part and the sleeving part.

4. The preterminated, wall-mountable, breakout fiber optic cable of any one of claims 1 to 3, wherein: The protective shell is a metal shell.

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