CN114265157A

CN114265157A - Split butterfly cable

Info

Publication number: CN114265157A
Application number: CN202111388307.XA
Authority: CN
Inventors: 何建文
Original assignee: Shenzhen Xin'aoke Cable Co ltd
Current assignee: Shenzhen Xin'aoke Cable Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-04-01
Anticipated expiration: 2041-11-22
Also published as: CN114265157B

Abstract

The invention belongs to the field of optical cables, and particularly relates to a split butterfly cable. It includes: two cable units which are matched and installed to form a complete butterfly cable; the cable unit comprises a sheath, a waterproof protective layer, a belting layer and optical fibers from outside to inside in sequence; the sheath extends to form an L-shaped connecting part, and the sheath connecting parts of the two cable units are mutually matched; the connecting part is provided with a platform, a clamping groove is formed in the connecting part of the bottom end of the side wall of the platform and the platform, a clamping protrusion matched with the clamping groove is arranged on the outer edge of the platform, and a metal sheet for clamping and matching is arranged on the platform; the metal sheet comprises a clamping portion and an embedding portion, one end of the clamping portion, which faces away from the side wall of the platform, is connected with the embedding portion, the embedding portion extends into the platform, and the height of the lower end face of the clamping portion is smaller than or equal to the thickness of the clamping portion. The invention can effectively and efficiently carry out wire dividing and wire combining operations; after branching, each cable unit has complete structure, good sealing performance and good mechanical performance and is not easy to damage; the whole structure is reasonable in design.

Description

Split butterfly cable

Technical Field

The invention belongs to the field of optical cables, and particularly relates to a split butterfly cable.

Background

A butterfly cable is a common type of fiber optic cable that is commonly used as an aerial cable or a home cable.

However, when the optical fiber cable is used as an optical fiber cable for home entry, the problems of difficult branching, low effective utilization rate and the like exist. Because in the actual building layout wiring process, the utilization ratio of the super multi-core fiber in the butterfly cable is usually not less than 50%, because the butterfly cable is led out from a communication provider port and then is connected to an indoor terminal, the number of cores is usually not so much, the branching operation of the butterfly cable is far more complicated than that of a circular cable, and the mechanical structure of the butterfly cable is easily damaged due to physical branching, so that the butterfly cable cannot have good mechanical performance, and the problems of aging, damage and the like are more easily caused in the use process.

Disclosure of Invention

The invention provides a split butterfly cable, aiming at solving the problems that the existing butterfly cable is low in effective utilization rate, difficult in branching operation and difficult to operate, the butterfly cable is easy to damage, the service life of the butterfly cable is shortened, and the like.

The invention aims to:

firstly, the branching efficiency of the butterfly cable is improved;

secondly, the butterfly cable after branching is ensured to be used as two independent units to keep a complete structure, and is not easy to age and damage;

thirdly, the cable can be assembled for the second time after branching, and even multi-wire compounding is realized, so that the cable wiring effect is improved.

In order to achieve the purpose, the invention adopts the following technical scheme.

A split butterfly cable comprising:

two cable units which are matched and installed to form a complete butterfly cable;

the cable unit comprises a sheath, a waterproof protective layer, a belting layer and optical fibers from outside to inside in sequence;

the sheath extends to form an L-shaped connecting part, and the sheath connecting parts of the two cable units are mutually matched;

the connecting part is provided with a platform, a clamping groove is formed in the connecting part of the bottom end of the side wall of the platform and the platform, a clamping protrusion matched with the clamping groove is arranged on the outer edge of the platform, and a metal sheet for clamping and matching is arranged on the platform;

the metal sheet comprises a clamping portion and an embedding portion, one end of the clamping portion, which faces away from the side wall of the platform, is connected with the embedding portion, the embedding portion extends into the platform, and the height of the lower end face of the clamping portion is smaller than or equal to the thickness of the clamping portion.

As a preference, the first and second liquid crystal compositions are,

the height of the lower end face of the clamping part is 0.8-1.0 time of the thickness of the clamping part;

the length of the clamping protrusion is larger than the depth of the clamping groove, and the width of the clamping part of the metal sheet is smaller than the depth of the clamping groove.

As a preference, the first and second liquid crystal compositions are,

the metal sheet is a Z-shaped metal sheet.

As a preference, the first and second liquid crystal compositions are,

the sheath is provided with a containing cavity for containing the belting layer and the optical fibers, the optical fibers are arranged in the containing cavity and are fixed by the belting layer bundle, and the waterproof protective layer is arranged on the outer surface of the belting layer.

As a preference, the first and second liquid crystal compositions are,

and a reinforcing piece is arranged in the belting layer.

As a preference, the first and second liquid crystal compositions are,

the reinforcing piece is arranged at the axle center of the belting layer, and the optical fibers are uniformly arranged on the outer side of the reinforcing piece in the circumferential direction.

As a preference, the first and second liquid crystal compositions are,

the sheath is an elastic PE sheath.

As a preference, the first and second liquid crystal compositions are,

the optical fiber is an optical fiber bundle formed by a single optical fiber or a plurality of optical fibers.

The invention has the beneficial effects that:

1) the wire separating and combining operation can be effectively and efficiently and quickly carried out;

2) after branching, each cable unit has complete structure, good sealing performance and good mechanical performance and is not easy to damage;

3) overall structure reasonable in design has higher connection assembly stability between the cable unit.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a cable unit of the present invention;

FIG. 3 is a schematic top view from perspective A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

FIG. 5 is a schematic view of various metal parts according to the present invention;

FIG. 6 is an assembly view of the split butterfly cable of the invention;

FIG. 7 is a schematic view of the snap fit of the metal pieces of the platform sections of two cable units after connection;

FIG. 8 is a schematic diagram of the present invention in actual use;

in the figure: 1 butterfly cable, 10 cable units, 100 sheaths, 101 connecting parts, 1011 platform, 1012 platform side wall, 1013 platform bottom, 1014 sheetmetal, 10141 joint portion, 10142 inlays establishes the portion, 1015 draw-in groove, 1016 card is protruding, 200 belting layer, 201 waterproof layer, 300 optic fibre, 400 reinforcement, 20 fingers.

The specific implementation mode is as follows:

the invention is described in further detail below with reference to specific embodiments and the attached drawing figures. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless otherwise specified, the raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.

Examples

A split butterfly cable as shown in fig. 1 specifically includes:

two cable units 10 which are matched and installed to form a complete butterfly cable;

the cable unit 10 is specifically shown in fig. 2, and includes a sheath 100, a waterproof protective layer 201, a belting layer 200, an optical fiber 300, and optionally a reinforcing member 400, wherein the sheath 100 is made of an elastic PE material;

the sheath 100 is provided with a cavity for accommodating the belting layer 200 and the optical fibers 300, the optical fibers 300 are arranged in the cavity and are bundled and fixed by the belting layer 200, the waterproof protective layer 201 is arranged on the outer surface of the belting layer 200, the reinforcing member 400 is arranged at the axis of the belting layer 200 of the cable unit 10, and the optical fibers 300 are uniformly arranged on the outer side of the reinforcing member 400 in the circumferential direction;

the sheath 100 is provided with an L-shaped connecting part 101 in an extending manner, and the connecting parts 101 of the sheaths 100 of the two cable units 10 are mutually matched;

specifically, as shown in fig. 2 to 4, the connecting portion 101 is provided with a platform 1011, the axial line of the belting layer 200 of the cable unit 10 is located on the extending surface of the platform 1011, a clamping groove 1015 is provided at the connecting position of the bottom end of the platform side wall 1012 and the platform 1011, a clamping protrusion 1016 adapted to the clamping groove 1015 is provided at the outer edge of the platform 1011, and a metal sheet 1014 for clamping and matching is provided on the platform 1011;

as shown in fig. 5, the metal sheet 1014 includes a clamping portion 10141 and an embedding portion 10142, one end of the clamping portion 10141, which faces away from the platform side wall 1012, is connected to the embedding portion 10142, and the embedding portion 10142 extends and is embedded into the platform 1011, the clamping portion 10141 is arranged parallel to the platform 1011, a height γ of a lower end surface of the clamping portion 10141 is 0.8-1.0 times of a thickness γ 'of the clamping portion 10141, and the height γ of the lower end surface of the clamping portion 10141 is equal to the thickness γ' of the clamping portion 10141 in this embodiment;

the length α of the locking projection 1016 is larger than the depth α 'of the locking groove 1015, and the width β of the locking portion 10141 of the metal sheet 1014 is smaller than the depth α' of the locking groove 1015.

With the above structure, the two cable units 10 can form stable clamping connection fit;

specifically, as shown in fig. 6, the user aligns the connecting parts 101 of the two cable units 10, especially, paying attention to the mutual alignment of the locking protrusions 1016 and the locking grooves 1015, the finger 20 holds the platform bottom 1013 of the cable unit 10, and pushes along the directions a and b, respectively, the locking protrusions 1016 are locked into the locking grooves 1015 and compressed after the locking protrusions 1016 contact the bottom of the locking grooves 1015, so as to generate an elastic restoring force, and after the metal sheets 1014 pushed to the platforms 1011 of the two cable units 10 are locked with each other as shown in fig. 7, the finger 20 is released, the elastic force generated after the compression deformation of the locking protrusions 1016 pushes the platforms 1011 of the integral connecting parts 101, so as to generate acting forces F1 and F2 on the metal sheets 1014, so that the two metal parts form a more tight fit connection;

and similar operation is carried out during the wire splitting, the metal sheets 1014 of the two cable units 10 are separated from each other after being pushed in the directions a and b, and the separated wire splitting can be quickly realized by slightly pulling the sheath 100.

Through the improvement of the structure, the effective utilization rate of the butterfly cable entering the home can be greatly improved, due to the structural characteristics of the butterfly cable, the conventional butterfly cable entering the home usually has more core wires, but actually according to the design of the optical fiber interface layout and the use requirement, a single butterfly cable is connected with a single optical fiber connector to generate more core wire residues, the butterfly cable cannot be effectively used, if the butterfly cable needs to be subjected to branching processing, operations such as shearing and the like are needed, the butterfly cable structure and even internal optical fibers are easily damaged, in addition, usually, one butterfly cable can only be communicated with a network operator network, so that the use number of the butterfly cable needs to be increased in multiples to realize the multi-purpose of one end, according to statistics, the effective utilization rate of the optical fibers in the butterfly cable is usually less than 60 percent, and after the improvement of the butterfly cable, the indoor optical fiber layout with one cable and multiple-purpose of one end can be performed as shown in figure 8, meanwhile, after the split butterfly cables are simply branched, different butterfly cables can be further connected in a matched mode, and the improvement effect on the wiring regularity and the like of the butterfly cables is remarkable.

Further, in the above-mentioned case,

the metal sheet 1014 can be a v-21274as shown in (5-2) or a zigzag metal sheet as shown in (5-3) or a Z-shaped metal sheet as shown in (5-4) in addition to the L-shaped metal sheet 1014 as shown in (5-1) as shown in fig. 5;

through tests, the L-shaped metal sheet and the v-21274are separated from each other to a certain extent after the butterfly cable is bent, the platform on one side is tightened and the platform on one side is loosened along with the different bending directions, so that the connection tightness of the actual metal sheets is reduced, the connecting part 101 is tightened towards the platform 1011 when the butterfly cable is bent, the connection effect between the butterfly cable metal sheets 1014 during bending is strengthened, and the butterfly cable has the highest connection stability.

Claims

1. A split butterfly cable, comprising:

2. A split butterfly cable according to claim 1,

3. A split butterfly cable according to claim 1,

the metal sheet is a Z-shaped metal sheet.

4. A split butterfly cable according to claim 1,

5. A split butterfly cable according to claim 4,

and a reinforcing piece is arranged in the belting layer.

6. A split butterfly cable according to claim 5,

7. A split butterfly cable according to claim 1,

the sheath is an elastic PE sheath.

8. A split butterfly cable according to claim 1,