CN115079362B

CN115079362B - Butterfly-shaped optical cable with a plurality of special-shaped lead-in units

Info

Publication number: CN115079362B
Application number: CN202210865997.1A
Authority: CN
Inventors: 柯旋; 龙清钧; 刘勇; 朱玲
Original assignee: Telumin Technology Dongguan Co ltd; SHENZHEN SDGI OPTICAL NETWORK TECHNOLOGIES CO LTD; Shenzhen SDG Information Co Ltd
Current assignee: Telumin Technology Dongguan Co ltd; SHENZHEN SDGI OPTICAL NETWORK TECHNOLOGIES CO LTD; Shenzhen SDG Information Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-10-25
Anticipated expiration: 2042-07-22
Also published as: CN115079362A

Abstract

The invention belongs to the technical field of communication optical cables, and discloses a butterfly-shaped optical cable with a plurality of special-shaped lead-in units, which is provided with a protection part and the special-shaped lead-in units and is characterized in that: the special-shaped lead-in unit consists of an optical fiber, a pair of reinforcing members and a first special-shaped sheath; the protection component consists of an outer sheath and a second special-shaped sheath, the second special-shaped sheath consists of a first special-shaped body and a second special-shaped body, one side edge of the second special-shaped sheath is combined with the inner wall of the outer sheath, the inner wall of the outer sheath and the second special-shaped sheath jointly enclose a containing cavity, the special-shaped introducing units are all positioned in the containing cavity, the special-shaped introducing units and the second special-shaped sheath are distributed at intervals along the clockwise or anticlockwise direction of the inner wall of the outer sheath, and the outer edges of any two special-shaped introducing units, which are close to the center of the optical cable, are externally tangent; each second profiled jacket is embedded within the side edge of the profiled introduction unit adjacent thereto. The invention has the following beneficial technical effects: smaller diameter, less material consumption and lower material cost.

Description

Butterfly-shaped optical cable with multiple special-shaped lead-in units

Technical Field

The invention belongs to the technical field of communication optical cables, and discloses a butterfly-shaped optical cable with a plurality of special-shaped lead-in units.

Background

With the rapid development of broadband technology, the usage of butterfly cables in FTTX is increasing, and for this reason, the demand of butterfly cables with multiple units is increasing, but the multiple-unit butterfly cables in the prior art still have the problems of incompact, large product diameter, high material consumption and high cost.

CN212411634U discloses an electric power to home butterfly-shaped drop optical cable, which has a protection tube, a plurality of butterfly-shaped optical units, and an electric unit; the optical cable is characterized in that the protective tube, the butterfly-shaped optical units and the electric unit are all of special shapes and structures, the electric power is led into the optical cable from the house to the butterfly-shaped, the electric unit is located in a central cavity of the protective tube, the butterfly-shaped optical units are located in an annular cavity of the protective tube, and each framework cavity of the electric unit is located right below a second tearing opening of each butterfly-shaped optical unit. It does increase the communication capacity by placing the butterfly light unit in a ring cavity manner.

CN216210121U discloses an easily separable bundled optical cable, comprising an inner core, an insulating layer, a reinforcing sleeve, a connecting sleeve, and a plurality of isolation sleeves and butterfly-shaped optical fibers, wherein the inner core is arranged in the center of the optical cable, the insulating layer is wrapped outside the inner core, the reinforcing sleeve is wrapped outside the insulating layer, the connecting sleeve is wrapped outside the reinforcing sleeve, the butterfly-shaped optical fibers are respectively wrapped by the isolation sleeves and are arranged on the outer surface of the connecting sleeve, and two sides of the isolation sleeves are mutually attached; the outer surface of the reinforcing sleeve is provided with a plurality of raised ribs, the number of the raised ribs is the same as that of the isolation sleeves, and the ribs penetrate through the connecting sleeve and are arranged between the two isolation sleeves, so that the communication capacity is increased.

CN213482531U discloses an expandable multi-core butterfly-shaped drop optical cable, which has a framework component, multiple expansion components, and multiple butterfly-shaped optical units; the method is characterized in that: the framework part consists of a framework body, a framework extension strip and a clamping part, and a central cavity is formed in the framework body; the expansion part is internally provided with an expansion cavity; the expansion cavity of each expansion part is clamped with a clamping part, the clamping part is attached to the upper surface of the lower side wall body of the expansion part, each expansion cavity is provided with a butterfly-shaped light unit, the butterfly-shaped light unit is positioned above the lower side wall body of the expansion part in the expansion cavity, and the number of the butterfly-shaped light units is increased through expansion of the expansion part.

CN211718589U discloses a butterfly-shaped drop cable for power communication, which has a central reinforcement, a butterfly-shaped cable unit, a positioning component, a protective layer, and an outer sheath; the butterfly-shaped optical cable unit is characterized in that the positioning parts have special structures, a plurality of positioning parts are spliced together along the whole circumference in the clockwise or anticlockwise direction, the butterfly-shaped optical cable unit is positioned between adjacent positioning parts and consists of an optical fiber, an upper reinforcing piece positioned above the optical fiber, a lower reinforcing piece positioned below the optical fiber and a butterfly-shaped optical cable unit sheath, the butterfly-shaped optical cable unit sheath integrally wraps the optical fiber, the upper reinforcing piece and the lower reinforcing piece, and the butterfly-shaped optical cable unit sheaths on the left side and the right side of the optical fiber are provided with tearing openings; the protective layer is coated outside the positioning component, the outer sheath is coated outside the protective layer, and the capacity of the butterfly-shaped optical cable unit is increased through splicing of the positioning component.

However, in the above prior art, the first and second documents are both implemented by a manner of circumferentially distributing the butterfly units around the central member, and the planes of the top lines of the two tearing openings of the butterfly units pass through the central axis of the optical cable, and since the butterfly units need a certain length and width, so as to be matched with the optical fiber connector in the prior art, the larger the number of the butterfly units, the faster the outer diameter of the product will be increased, the larger the overall diameter of the product will be, the larger the consumption of various materials will be, and the costs of the product in material, production, transportation and management will be significantly increased.

In the above prior art, the third and fourth documents are both implemented by circumferentially distributing around the central member, and the planes of the top lines of the two tearing openings of the butterfly-shaped unit are parallel to the central axis of the optical cable,

in the prior art, although the butterfly-shaped optical cable is provided with a plurality of units, the problems of incompact structure, large product diameter, high material consumption, high cost and the like of the butterfly-shaped optical cable with the plurality of units are urgently needed to be solved.

Disclosure of Invention

In order to solve the problems, the invention aims to disclose a butterfly-shaped optical cable with a plurality of special-shaped lead-in units, which is realized by adopting the following technical scheme.

A butterfly-shaped optical cable with a plurality of special-shaped lead-in units is provided with a protection component and n same special-shaped lead-in units, and is characterized in that: the special-shaped lead-in unit is composed of an optical fiber, a pair of reinforcing members and a first special-shaped sheath, wherein the outer edge of the first special-shaped sheath is arranged on a first cylindrical surface, the first side edge of the first special-shaped sheath is arranged on a second cylindrical surface, the second side edge of the first special-shaped sheath is arranged on a third cylindrical surface, the optical fiber is positioned in the center of the first special-shaped sheath, the reinforcing members are respectively positioned in the first special-shaped sheath on the upper side and the lower side of the optical fiber, the diameter of the first cylindrical surface is larger than that of the second cylindrical surface, the diameter of the second cylindrical surface is equal to that of the third cylindrical surface, the first side edge and the second side edge are both sunken towards the direction of the optical fiber, the special-shaped lead-in unit is of an up-down symmetrical structure, and the special-shaped lead-in unit is of a left-right symmetrical structure; the protection component is composed of an outer sheath and n identical second special-shaped sheaths, the protection component is of an integrated structure, each second special-shaped sheath is composed of a first special-shaped body and a second special-shaped body which are connected together, one side edge of each second special-shaped sheath is combined with the inner wall of the outer sheath, the other side edge of each second special-shaped sheath extends towards the center of the outer sheath, the n second special-shaped sheaths are symmetrically distributed in the outer sheath, the inner wall of the outer sheath and the n second special-shaped sheaths jointly form a containing cavity, and the inner wall of the outer sheath is a cylindrical surface; the n special-shaped introducing units are positioned in the containing cavity, the special-shaped introducing units and the second special-shaped sheath are distributed at intervals along the clockwise direction of the inner wall of the outer sheath or along the anticlockwise direction of the inner wall of the outer sheath, and the outer edges of any two special-shaped introducing units, which are close to the center of the optical cable, are circumscribed; each second profiled jacket is embedded in the side edge of the profiled lead-in element adjacent thereto; n is a positive integer greater than 1.

A butterfly-shaped optical cable with a plurality of special-shaped lead-in units is provided with a protective component, n same special-shaped lead-in units and n same special-shaped optical units, and is characterized in that: the special-shaped lead-in unit is composed of an optical fiber, a pair of reinforcing members and a first special-shaped sheath, wherein the outer edge of the first special-shaped sheath is arranged on a first cylindrical surface, the first side edge of the first special-shaped sheath is arranged on a second cylindrical surface, the second side edge of the first special-shaped sheath is arranged on a third cylindrical surface, the optical fiber is positioned in the center of the first special-shaped sheath, the reinforcing members are respectively positioned in the first special-shaped sheath on the upper side and the lower side of the optical fiber, the diameter of the first cylindrical surface is larger than that of the second cylindrical surface, the diameter of the second cylindrical surface is equal to that of the third cylindrical surface, the first side edge and the second side edge are both sunken towards the direction of the optical fiber, the special-shaped lead-in unit is of an up-down symmetrical structure, and the special-shaped lead-in unit is also of a left-right symmetrical structure; the protective component is an outer sheath, the inner wall of the outer sheath is a cylindrical surface, the inner part of the outer sheath is hollow, and the hollow part is an accommodating cavity; the special-shaped light unit is composed of a second special-shaped sheath, a pair of reinforcing members and an optical fiber, the second special-shaped sheath is composed of a first special-shaped body and a second special-shaped body which are connected together, one side edge of the second special-shaped sheath is a part of a cylindrical surface, the diameter of a cylinder where the one side edge of the second special-shaped sheath is located is equal to that of the inner wall of the outer sheath, the optical fiber is located in the center of the second special-shaped sheath, the pair of reinforcing members are respectively located in the second special-shaped sheaths on the upper side and the lower side of the optical fiber, the outer edge of the first special-shaped body is in a shape matched with the side edge of the first special-shaped sheath, the second special-shaped body is in a shape matched with the side edge of the first special-shaped sheath, the center of the other side edge of the second special-shaped sheath is sunken towards the direction of the optical fiber, and the special-shaped light unit is in an up-down symmetrical structure; the n same special-shaped introducing units and the n same special-shaped light units are positioned in the accommodating cavity, the special-shaped introducing units and the second special-shaped sheaths are distributed at intervals along the clockwise direction of the inner wall of the outer sheath or the anticlockwise direction of the inner wall of the outer sheath, one side edge of each second special-shaped sheath is attached to the inner wall of the outer sheath, and the outer edge of one end of the first special-shaped sheath of each special-shaped introducing unit is attached to the inner wall of the outer sheath; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; each second profiled jacket being embedded within the side edge of the profiled lead-in unit adjacent thereto; n is a positive integer greater than 1.

A butterfly-shaped optical cable with a plurality of special-shaped lead-in units is provided with a protection component and three same special-shaped lead-in units, and is characterized in that: the special-shaped lead-in unit is composed of an optical fiber, a pair of reinforcing members and a first special-shaped sheath, wherein the outer edge of the first special-shaped sheath is arranged on a first cylindrical surface, the first side edge of the first special-shaped sheath is arranged on a second cylindrical surface, the second side edge of the first special-shaped sheath is arranged on a third cylindrical surface, the optical fiber is positioned in the center of the first special-shaped sheath, the reinforcing members are respectively positioned in the first special-shaped sheath on the upper side and the lower side of the optical fiber, the width of the first special-shaped sheath is W, the height of the first special-shaped sheath is H, the diameter of the first cylindrical surface is larger than that of the second cylindrical surface, the diameter of the second cylindrical surface is equal to that of the third cylindrical surface, the first side edge and the second side edge are both sunken towards the direction of the optical fiber, the special-shaped lead-in unit is of a vertically symmetrical structure, and the special-shaped lead-in unit is also of a horizontally symmetrical structure; the protection component is composed of an outer sheath and three identical second special-shaped sheaths, the protection component is of an integrated structure, each second special-shaped sheath is composed of a first special-shaped body and a second special-shaped body which are connected together, one side edge of each second special-shaped sheath is combined with the inner wall of the outer sheath, the other side edge of each second special-shaped sheath extends towards the center of the outer sheath, the three second special-shaped sheaths are symmetrically distributed in the outer sheath, the inner wall of the outer sheath and the three second special-shaped sheaths jointly form an accommodating cavity, and the inner wall of the outer sheath is a cylindrical surface; the three special-shaped lead-in units are all positioned in the accommodating cavity, the plane where the pair of reinforcing members of the special-shaped lead-in unit above the middle is located is called a first plane, the first plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the special-shaped lead-in unit on the left side is called a second plane, the second plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the special-shaped lead-in unit on the right side is called a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees with each other in pairs; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; each second profiled jacket is embedded within the side edge of the profiled lead-in element adjacent thereto.

A butterfly-shaped optical cable with a plurality of special-shaped lead-in units is provided with a protection component, three same special-shaped lead-in units and three same special-shaped optical units, and is characterized in that: the special-shaped lead-in unit is composed of an optical fiber, a pair of reinforcing members and a first special-shaped sheath, wherein the outer edge of the first special-shaped sheath is arranged on a first cylindrical surface, the first side edge of the first special-shaped sheath is arranged on a second cylindrical surface, the second side edge of the first special-shaped sheath is arranged on a third cylindrical surface, the optical fiber is positioned in the center of the first special-shaped sheath, the reinforcing members are respectively positioned in the first special-shaped sheath on the upper side and the lower side of the optical fiber, the width of the first special-shaped sheath is W, the height of the first special-shaped sheath is H, the diameter of the first cylindrical surface is larger than that of the second cylindrical surface, the diameter of the second cylindrical surface is equal to that of the third cylindrical surface, the first side edge and the second side edge are both sunken towards the direction of the optical fiber, the special-shaped lead-in unit is of a vertically symmetrical structure, and the special-shaped lead-in unit is also of a horizontally symmetrical structure; the protective component is an outer sheath, the inner wall of the outer sheath is a cylindrical surface, the inner part of the outer sheath is hollow, and the hollow part is an accommodating cavity; the special-shaped light unit is composed of a second special-shaped sheath, a pair of reinforcing members and an optical fiber, wherein the second special-shaped sheath is composed of a first special-shaped body and a second special-shaped body which are connected together, one side edge of the second special-shaped sheath is a part of a cylindrical surface, the diameter of a cylinder where the one side edge of the second special-shaped sheath is located is equal to that of the inner wall of the outer sheath, the optical fiber is located in the center of the second special-shaped sheath, the pair of reinforcing members are respectively located in the second special-shaped sheaths on the upper side and the lower side of the optical fiber, the outer edge of the first special-shaped body is in a shape matched with the side edge of the first special-shaped sheath, the second special-shaped sheath is in a shape matched with the side edge of the first special-shaped sheath, the width of the second special-shaped sheath is T, the length of the second special-shaped sheath is L, the center of the other side edge of the second special-shaped sheath is sunken towards the direction of the optical fiber, and the special-shaped light unit is in an up-down symmetrical structure; the three same special-shaped lead-in units and the three same special-shaped light units are all positioned in the accommodating cavity, the special-shaped lead-in units and the special-shaped light units are distributed at intervals in the circumferential direction of the inner wall of the outer sheath, one side edge of each second special-shaped sheath is attached to the inner wall of the outer sheath, the outer edge of one end of the first special-shaped sheath of each special-shaped lead-in unit is attached to the inner wall of the outer sheath, the plane where the pair of reinforcing members of the special-shaped lead-in unit above the middle is located is called a first plane, the first plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the left special-shaped lead-in unit is located is called a second plane, the second plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the right special-shaped lead-in unit is called a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees with each other; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; a plane where the pair of reinforcing members of the profiled light unit near the upper left is located is called a fourth plane, an included angle between the fourth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the upper right is located is called a fifth plane, an included angle between the fifth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the lower middle is located is called a sixth plane, and the sixth plane is perpendicular to the first plane; each second profiled jacket is embedded within the side edge of the profiled lead-in element adjacent thereto.

The butterfly-shaped optical cable with the plurality of special-shaped lead-in units is characterized in that: the outer sheath is segmented and comprises a plurality of parts, clamping parts are arranged at two ends of each part of the segmented outer sheath, and the clamping parts at the two ends of the segmented outer sheath can enable the adjacent segmented outer sheaths to be spliced to form the complete outer sheath with the cylindrical inner wall.

The butterfly-shaped optical cable with the plurality of special-shaped lead-in units is characterized in that the side edges of the first special-shaped sheaths on the left side and the right side of the optical fiber are provided with tearing openings which are sunken towards the direction of the optical fiber.

The butterfly-shaped optical cable with the plurality of special-shaped lead-in units is characterized in that the center of the butterfly-shaped optical cable with the plurality of special-shaped lead-in units is provided with a central reinforcing piece, and the central reinforcing piece is circumscribed with the outer edges, close to the center of the optical cable, of the three special-shaped lead-in units.

The application has the following main beneficial technical effects: smaller diameter, less material consumption, lower material cost, the same cable reel, longer coiled length, lower transportation and storage costs, less space occupied when tubing or overhead, and lower space rental costs.

Drawings

Fig. 1 is a schematic perspective view of a dissected segment of the example 1.

Fig. 2 is an enlarged cross-sectional view of fig. 1.

Fig. 3 is a schematic cross-sectional structure of the protective member used in fig. 1.

Fig. 4 is a schematic perspective view of a section of the anatomical structure of the profiled introduction unit used in fig. 1.

Fig. 5 is a schematic cross-sectional structure of fig. 4 enlarged and added with reference numerals.

Fig. 6 is a schematic cross-sectional structure of fig. 4 enlarged and with a size indicator attached.

Fig. 7 is a schematic perspective view of a dissected segment of the example 2.

Fig. 8 is an enlarged cross-sectional view of fig. 7.

Fig. 9 is a schematic cross-sectional structure diagram of the shaped light unit used in fig. 7 with a size mark added after enlargement.

FIG. 10 is a schematic cross-sectional view showing embodiment example 3 with the shaped introducing unit removed.

In the figure: 11-optical fiber, 12-reinforcing member, 13-first special-shaped sheath, 14-tearing opening, 21-outer sheath, 22-second special-shaped sheath, 221-first special-shaped body, 222-second special-shaped body, 23-containing cavity, 130-first cylindrical surface, 131-second cylindrical surface, 132-third cylindrical surface, W-width of first special-shaped sheath, H-height of first special-shaped sheath, 223-optical fiber, 224-reinforcing member, T-width of second special-shaped sheath, L-length of second special-shaped sheath, 211-clamping part and 233-containing cavity.

Detailed Description

Examples 1

Referring to fig. 1 to 6, a butterfly-shaped optical cable with a plurality of special-shaped lead-in units has a protection component and three identical special-shaped lead-in units, and is characterized in that:

the special-shaped lead-in unit comprises an optical fiber 11, a pair of reinforcing members 12 and a first special-shaped sheath 13, wherein the outer edge of the first special-shaped sheath 13 is arranged on a first cylindrical surface 130, the first side edge of the first special-shaped sheath 13 is arranged on a second cylindrical surface 131, the second side edge of the first special-shaped sheath 13 is arranged on a third cylindrical surface 132, the optical fiber 11 is positioned in the center of the first special-shaped sheath 13, the reinforcing members 12 are respectively positioned in the first special-shaped sheath 13 on the upper side and the lower side of the optical fiber 11, the width of the first special-shaped sheath 13 is W, the height of the first special-shaped sheath 13 is H, the diameter of the first cylindrical surface 130 is larger than that of the second cylindrical surface 131, the diameter of the second cylindrical surface 131 is equal to that of the third cylindrical surface 132, the first side edge and the second side edge are both concave towards the direction of the optical fiber, the special-shaped lead-in unit is of a vertically symmetrical structure, and the lead-in unit is of a horizontally symmetrical structure;

the protection component is composed of an outer sheath 21 and three identical second special-shaped sheaths 22, the protection component is of an integrated structure, each second special-shaped sheath 22 is composed of a first special-shaped body 221 and a second special-shaped body 222 which are connected together, one side edge of each second special-shaped sheath 22 is combined with the inner wall of the outer sheath 21, the other side edge of each second special-shaped sheath 22 extends towards the center of the outer sheath 21, the three second special-shaped sheaths 22 are symmetrically distributed in the outer sheath 21, the inner wall of the outer sheath 21 and the three second special-shaped sheaths 22 jointly enclose an accommodating cavity 23, and the inner wall of the outer sheath 21 is a cylindrical surface;

the three special-shaped lead-in units are all positioned in the accommodating cavity 23, the plane where the pair of reinforcing members of the special-shaped lead-in unit positioned at the upper middle part is positioned is called a first plane, the first plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the special-shaped lead-in unit positioned at the left side is called a second plane, the second plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the special-shaped lead-in unit positioned at the right side is called a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees with each other in pairs; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; each second profiled jacket 22 is embedded within the side edge of the profiled lead-in unit adjacent thereto.

The butterfly-shaped optical cable with the plurality of special-shaped lead-in units is characterized in that the side edges of the first special-shaped sheaths 13 on the left side and the right side of the optical fiber 11 are provided with tearing openings 14, and the tearing openings 14 are sunken towards the direction of the optical fiber.

EXAMPLES example 2

Referring to fig. 7 to 9 and fig. 1 to 6, a butterfly-shaped optical cable having a plurality of special-shaped lead-in units includes a protection component, three identical special-shaped lead-in units, and three identical special-shaped optical units, and is characterized in that:

the special-shaped lead-in unit is composed of an optical fiber 11, a pair of reinforcing members 12 and a first special-shaped sheath 13, wherein the outer edge of the first special-shaped sheath 13 is arranged on a first cylindrical surface 130, the first side edge of the first special-shaped sheath 13 is arranged on a second cylindrical surface 131, the second side edge of the first special-shaped sheath 13 is arranged on a third cylindrical surface 132, the optical fiber 11 is positioned in the center of the first special-shaped sheath 13, the reinforcing members 12 are respectively positioned in the first special-shaped sheath 13 on the upper side and the lower side of the optical fiber 11, the width of the first special-shaped sheath 13 is W, the height of the first special-shaped sheath 13 is H, the diameter of the first cylindrical surface 130 is larger than that of the second cylindrical surface 131, the diameter of the second cylindrical surface 131 is equal to that of the third cylindrical surface 132, the first side edge and the second side edge are both concave towards the direction of the optical fiber, the special-shaped lead-in unit is of a vertically symmetrical structure, and the lead-in unit is also of a horizontally symmetrical structure;

the protection component is an outer sheath 21, the inner wall of the outer sheath 21 is a cylindrical surface, the inner part of the outer sheath 21 is hollow, and the hollow part is an accommodating cavity 233;

the special-shaped light unit is composed of a second special-shaped sheath 22, a pair of reinforcing members 224 and an optical fiber 223, wherein the second special-shaped sheath 22 is composed of a first special-shaped body 221 and a second special-shaped body 222 which are connected together, one side edge of the second special-shaped sheath 22 is a part of a cylindrical surface, the diameter of a cylinder where the one side edge of the second special-shaped sheath 22 is located is equal to that of the inner wall of the outer sheath 21, the optical fiber 223 is located in the center of the second special-shaped sheath 22, the pair of reinforcing members 224 are respectively located in the second special-shaped sheath 22 on the upper side and the lower side of the optical fiber 223, the outer edge of the first special-shaped body 221 is in a shape matched with the side edge of the first special-shaped sheath 13, the second special-shaped body 222 is in a shape matched with the side edge of the first special-shaped sheath 13, the width of the second special-shaped sheath 22 is T, the special-shaped length of the second special-shaped sheath 22 is L, the center of the other side edge of the second sheath 22 is sunken towards the optical fiber 223, and the special-shaped light unit is in an up-down symmetrical structure;

the three same special-shaped lead-in units and the three same special-shaped light units are all positioned in the accommodating cavity 233, the special-shaped lead-in units and the special-shaped light units are distributed at intervals in the circumferential direction of the inner wall of the outer sheath 21, one side edge of each second special-shaped sheath 22 is attached to the inner wall of the outer sheath 21, the outer edge of one end of the first special-shaped sheath 13 of each special-shaped lead-in unit is attached to the inner wall of the outer sheath 21, the plane where the pair of reinforcing members of the special-shaped lead-in unit above the middle is located is called a first plane, the first plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the left special-shaped lead-in unit is located is called a second plane, the second plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the right special-shaped lead-in unit is located is called a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees in pairs; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; a plane where the pair of reinforcing members of the profiled light unit near the upper left is located is called a fourth plane, an included angle between the fourth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the upper right is located is called a fifth plane, an included angle between the fifth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the lower middle is located is called a sixth plane, and the sixth plane is perpendicular to the first plane; each second profiled jacket 22 is embedded in the side edge of the profiled lead-in element adjacent thereto.

Embodiment example 3

Referring to fig. 10 and fig. 1 to 9, referring to embodiment example 2, a butterfly-shaped optical cable having a plurality of special-shaped lead-in units is characterized in that: the outer sheath 21 is segmented and is composed of a plurality of parts, clamping parts 211 are arranged at two ends of each part of the outer sheath 21, and the clamping parts 211 at the two ends of the outer sheath 21 can enable adjacent outer sheaths 21 to be spliced to finally form the outer sheath 21 with a cylindrical inner wall.

Further, the modification of embodiment 1 may also be implemented, where the outer sheath 21 is segmented and is composed of a plurality of parts, both ends of each part of the outer sheath 21 are provided with the clamping parts 211, the clamping parts 211 at both ends of the outer sheath 21 can realize splicing between adjacent outer sheaths 21, the second special-shaped sheath 22 protrudes from the inner wall of each section of the outer sheath 21, the second special-shaped sheath 22 is composed of the first special-shaped body 221 and the second special-shaped body 222, and after all the outer sheaths 21 are spliced, the inner wall of the outer sheath 21 and the second special-shaped sheath 22 surround the accommodating cavity 23.

The clip member 211 is not limited to a shape or a structure as long as the position of the adjacent outer sheath 21 is relatively fixed.

The butterfly-shaped optical cable with the plurality of special-shaped lead-in units is not limited to the structure with only three special-shaped lead-in units in the implementation example, and can also be provided with other plurality of special-shaped lead-in units; also, the structure of embodiment 2 is not limited to have only three profiled light units, and may have other plural units; the plurality of special-shaped lead-in units or/and the plurality of special-shaped light units enlarge the number of the lead-in units, so that the special-shaped lead-in units can be used in occasions with more intensive demands, such as building entrance and the like.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units that this application said, its characterized in that: the model of the optical fiber is G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b, A1c or A1d.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the material of the reinforcing member is steel or iron or aluminum or copper or glass fiber reinforced plastic or aramid yarn.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the material of the first profiled sheath is plastic.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the material of the outer sheath is plastic.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the material of the second profiled jacket is plastic.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the optical fiber has a model number of G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b, A1c or A1d.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units that this application said, its characterized in that: the value of the width W of the first profiled sheath corresponds to: t is more than or equal to 1.9mm and less than or equal to 2.1mm, and the range can also be represented as follows: [1.9,2.1] mm.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the height H of the first profiled sheath has a value corresponding to: l is more than or equal to 2.9mm and less than or equal to 3.1mm, and can also be represented by the following range: [2.9,3.1] mm.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units is characterized in that: the value of the width T of the second profiled sheath corresponds to: t is more than or equal to 1.9mm and less than or equal to 2.1mm, and the range can also be represented as follows: [1.9,2.1] mm.

The butterfly-shaped optical cable with a plurality of special-shaped lead-in units that this application said, its characterized in that: the length L of the second profiled sheath has a value corresponding to: l is more than or equal to 2.9mm and less than or equal to 3.1mm, and can also be represented by the following range: [2.9,3.1] mm.

In this application, the cross section of the special-shaped lead-in unit is visually expressed on fig. 5 and 6, and it can be known that: in fig. 1, 2, 7, and 8, except for the special-shaped introducing unit which is positioned at the upper part of the middle, the special-shaped introducing unit is only placed in an inclined or rotating manner, and is also in a symmetrical structure. In fig. 9 the cross-section of the profiled light unit is visually shown, the profiled light unit being of an up-down symmetrical structure.

In the application, the special-shaped lead-in unit and the special-shaped optical unit are structures recommended in an appendix of YD/T1997-2009 standard butterfly lead-in optical cable for access network in the communication industry of the people's republic of China, so the special-shaped structure in the application can be adopted, and an applicant repeatedly consults optical fiber connector manufacturers, mobile/telecom/Unicom/radio/iron tower operators and an optical fiber transceiving transit/amplifier production factory end and determines the special-shaped lead-in unit through actual use, so compared with the structure in the standard, the special-shaped lead-in unit in the application has the advantages of less material consumption and lower cost; the special-shaped lead-in unit and the special-shaped optical unit in the application can be used interchangeably with the existing standard appendix A, because the optical fiber connector has certain tolerance for the size of the butterfly-shaped optical cable, such as the width of 1.9-2.1mm and the length of 2.9-3.1mm, and actually, another non-standard optical fiber connector exists; the special-shaped lead-in unit and the special-shaped optical unit in the application can meet the requirements of standard optical fiber connectors in size.

Compared with the prior art, the butterfly-shaped optical cable is more compact in structure, smaller in outer diameter, less in material consumption and lower in cost. The same example with 6 lead-in units will now be described. Taking documents 1 and 2 in the background art as an example, in order to make 6 butterfly units in document 1, edges of all butterfly units close to the center are on the same circumference, at this time, chord lengths of inner edges of the 6 butterfly units are all 3mm, arc lengths are actually longer than the chord lengths, and arc lengths are calculated by the chord lengths, on the premise that the inner edges of the 6 butterfly units are connected two by two, a diameter of a circle where the inner edges of the butterfly units are located is 3 × 6/pi, actually, due to existence of an annular cavity, it is impossible to connect inner edges of adjacent butterfly units, and since an interface nominal value of an optical fiber connector in the prior art is 3mm × 2mm, a nominal value of a size of a butterfly unit is also 3mm × 2mm,3mm × 2mm refers to a height or a length, 2mm refers to a width, and a diameter of a circle where the outer edges of the butterfly units are located is: 3 x 6/pi +2 x 2, about 9.73mm, which is ideal, the diameter of the circle in which the outer edge of the butterfly element of document 2 is located is also larger than 9.73 mm.

Taking documents 3 and 4 in the background art as examples, in document 4, in order to make 6 butterfly units, the edges of all butterfly units close to the center are on the same circumference, at this time, the width of the inner edge of 6 butterfly units is 2mm, and on the premise that the inner edges of 6 butterfly units are connected two by two, the diameter of the circle where the inner edges of the butterfly units are located is 2 × 6/pi, in fact, due to the existence of the positioning component, it is impossible to make the inner edges of adjacent butterfly units connected, similarly, since the nominal value of the interface of the optical fiber connector in the prior art is 3mm × 2mm, the nominal value of the size of a butterfly unit is also generally 3mm × 2mm,3mm refers to the height or length, 2mm refers to the width, and the diameter of the circle where the outer edges of the butterfly units are located is: 2 × 6/pi +3 × 2 is about 9.82mm, which is an ideal value, and document 3 does not disclose a pattern having 6 butterfly-shaped cells, but since the butterfly-shaped light cells are placed in the shield member and the engagement members of the skeleton member are inserted in the shield member due to the presence of the shield member, in document 3, the diameter of the circle in which the outer edges of the butterfly-shaped light cells are located should be larger than 9.82 mm.

In this application, taking implementation example 2 as an example, a plane in which a pair of strength members of the specially-shaped lead-in unit located above the middle is located is referred to as a first plane, the first plane passes through a central axis of the optical cable, a plane in which a pair of strength members of the specially-shaped lead-in unit located on the left side is referred to as a second plane, the second plane passes through the central axis of the optical cable, a plane in which a pair of strength members of the specially-shaped lead-in unit located on the right side is referred to as a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees with each other in pairs; a plane where the pair of reinforcing members of the profiled light unit near the upper left is located is called a fourth plane, an included angle between the fourth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the upper right is located is called a fifth plane, an included angle between the fifth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the lower middle is located is called a sixth plane, and the sixth plane is perpendicular to the first plane; in this application, keep away from the outer fringe of the special-shaped lead-in unit at optical cable center, keep away from the outer fringe of the special-shaped light unit at optical cable center on same face of cylinder, be called the fourth face of cylinder, in the outer fringe of the special-shaped lead-in unit that is close to optical cable center, adjacent all is external tangent mutually, and through calculating, the diameter of fourth face of cylinder is: 2 × 3/(No. 3) +3, about 6.46mm, calculated on the basis that the nominal value of the size of the profiled light unit is 3mm × 2mm,3mm indicates the length L,2mm indicates the width T, the nominal value of the size of the profiled lead-in unit is 3mm × 2mm,3mm indicates the height H,2mm indicates the width W. From the comparative analysis described above it is evident that: the outer diameter in the present application can be significantly reduced, if the cylindrical surface on which the outer edge of the special-shaped optical unit away from the center of the optical cable is located is referred to as the cable core diameter, the cable core diameter in the present application is only 66.39% of the cable core diameter of documents 1 and 2, the cable core diameter in the present application is only 65.78% of the cable core diameter of documents 3 and 4, and also under the ideal conditions of documents 1 to 4, actually, the cable core diameter in the present application is only 60% of the above prior art at the maximum, so the overall diameter of the optical cable in the present application is smaller, the consumption of each material is significantly reduced, the cost is significantly reduced, the same optical cable tray can be coiled to a longer length, the transportation and overhead storage costs are lower, the occupied space when a pipeline or an overhead cable is used, and the space rental cost is lower.

The application has the following main beneficial technical effects: smaller diameter, less material consumption, lower material cost, the same cable reel, longer coiled length, lower transportation and storage costs, less space occupied when piping or aerial, and lower space rental costs.

The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of this invention.

Claims

1. A butterfly-shaped optical cable with a plurality of special-shaped lead-in units is provided with a protection component and three same special-shaped lead-in units, and is characterized in that: the special-shaped lead-in unit comprises an optical fiber (11), a pair of reinforcing members (12) and a first special-shaped sheath (13), wherein the outer edge of the first special-shaped sheath (13) is arranged on a first cylindrical surface (130), the first side edge of the first special-shaped sheath (13) is arranged on a second cylindrical surface (131), the second side edge of the first special-shaped sheath (13) is arranged on a third cylindrical surface (132), the optical fiber (11) is positioned in the center of the first special-shaped sheath (13), the reinforcing members (12) are respectively positioned in the first special-shaped sheath (13) on the upper side and the lower side of the optical fiber (11), the diameter of the first cylindrical surface (130) is larger than that of the second cylindrical surface (131), the diameter of the second cylindrical surface (131) is equal to that of the third cylindrical surface (132), the first side edge and the second side edge are both concave towards the direction of the optical fiber, the special-shaped lead-in unit is of a vertically symmetrical structure, and the special-shaped lead-in unit is also of a horizontally symmetrical structure; the protection component is composed of an outer sheath (21) and three identical second special-shaped sheaths (22), the protection component is of an integrated structure, the second special-shaped sheaths (22) are composed of a first special-shaped body (221) and a second special-shaped body (222) which are connected together, one side edge of each second special-shaped sheath (22) is combined with the inner wall of the outer sheath (21), the other side edge of each second special-shaped sheath (22) extends towards the center of the outer sheath (21), the three second special-shaped sheaths (22) are symmetrically distributed in the outer sheath (21), the inner wall of the outer sheath (21) and the three second special-shaped sheaths (22) jointly form an accommodating cavity (23), and the inner wall of the outer sheath (21) is a cylindrical surface; the three special-shaped lead-in units are all positioned in the accommodating cavity (23), the plane where a pair of reinforcing members of the special-shaped lead-in unit above the middle is located is called a first plane, the first plane passes through the central axis of the optical cable, the plane where a pair of reinforcing members of the special-shaped lead-in unit on the left side is called a second plane, the second plane passes through the central axis of the optical cable, the plane where a pair of reinforcing members of the special-shaped lead-in unit on the right side is called a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees with each other in pairs; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; each second profiled jacket (22) is embedded in the side edge of the profiled lead-in element adjacent thereto.

2. A butterfly-shaped optical cable with a plurality of special-shaped lead-in units is provided with a protection component, three same special-shaped lead-in units and three same special-shaped optical units, and is characterized in that: the special-shaped lead-in unit is composed of an optical fiber (11), a pair of reinforcing members (12) and a first special-shaped sheath (13), wherein the outer edge of the first special-shaped sheath (13) is arranged on a first cylindrical surface (130), the first side edge of the first special-shaped sheath (13) is arranged on a second cylindrical surface (131), the second side edge of the first special-shaped sheath (13) is arranged on a third cylindrical surface (132), the optical fiber (11) is positioned in the center of the first special-shaped sheath (13), the reinforcing members (12) are respectively positioned in the first special-shaped sheath (13) on the upper side and the lower side of the optical fiber (11), the diameter of the first cylindrical surface (130) is larger than that of the second cylindrical surface (131), the diameter of the second cylindrical surface (131) is equal to that of the third cylindrical surface (132), the first side edge and the second side edge are both concave towards the direction of the optical fiber, the special-shaped lead-in unit is of a vertically symmetrical structure, and the special-shaped lead-in unit is also of a horizontally symmetrical structure; the protective component is an outer sheath (21), the inner wall of the outer sheath (21) is a cylindrical surface, the inner part of the outer sheath (21) is hollow, and the hollow part is an accommodating cavity (233); the special-shaped light unit is composed of a second special-shaped sheath (22), a pair of reinforcing members (224) and an optical fiber (223), the second special-shaped sheath (22) is composed of a first special-shaped body (221) and a second special-shaped body (222) which are connected together, one side edge of the second special-shaped sheath (22) is a part of a cylindrical surface, the diameter of a cylinder where one side edge of the second special-shaped sheath (22) is located is equal to that of the inner wall of the outer sheath (21), the optical fiber (223) is located in the center of the second special-shaped sheath (22), the pair of reinforcing members (224) are respectively located in the second special-shaped sheath (22) on the upper side and the lower side of the optical fiber (223), the outer edge of the first special-shaped body (221) is in a shape matched with the side edge of the first special-shaped sheath (13), the second special-shaped body (222) is in a shape matched with the side edge of the first special-shaped sheath (13), the center of the other side edge of the second special-shaped sheath (22) is recessed towards the optical fiber (223), and the special-shaped light unit is in a vertically symmetrical structure; the three same special-shaped lead-in units and the three same special-shaped light units are all positioned in the accommodating cavity (233), in the circumferential direction of the inner wall of the outer sheath (21), the special-shaped lead-in units and the special-shaped light units are distributed at intervals, one side edge of each second special-shaped sheath (22) is attached to the inner wall of the outer sheath (21), the outer edge of one end of the first special-shaped sheath (13) of each special-shaped lead-in unit is attached to the inner wall of the outer sheath (21), the plane where the pair of reinforcing members of the special-shaped lead-in unit above the middle is located is called a first plane, the first plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the special-shaped lead-in unit on the left side is located is called a second plane, the second plane passes through the central axis of the optical cable, the plane where the pair of reinforcing members of the special-shaped lead-in unit on the right side is called a third plane, the third plane passes through the central axis of the optical cable, and the first plane, the second plane and the third plane form an included angle of 120 degrees with each other; the outer edges of any two special-shaped lead-in units close to the center of the optical cable are circumscribed; a plane where the pair of reinforcing members of the profiled light unit near the upper left is located is called a fourth plane, an included angle between the fourth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the upper right is located is called a fifth plane, an included angle between the fifth plane and the first plane is 30 degrees, a plane where the pair of reinforcing members of the profiled light unit near the lower middle is located is called a sixth plane, and the sixth plane is perpendicular to the first plane; each second profiled jacket (22) is embedded in the side edge of the profiled lead-in element adjacent thereto.

3. The butterfly-shaped optical cable having a plurality of special-shaped introduction units according to claim 1 or claim 2, wherein: the outer sheath (21) is segmented and is composed of a plurality of parts, clamping parts (211) are arranged at two ends of the segmented outer sheath (21), and the clamping parts (211) at the two ends of the segmented outer sheath (21) can enable the adjacent segmented outer sheaths (21) to be spliced to form the complete outer sheath (21) with the cylindrical inner wall.

4. A butterfly cable with a plurality of profiled drop units as claimed in claim 1 or claim 2, wherein: the side edges of the first profiled sheaths (13) on the left and right sides of the optical fiber (11) are provided with tearing openings (14), and the tearing openings (14) are sunken towards the optical fiber direction.

5. The butterfly-shaped optical cable having a plurality of special-shaped introduction units according to claim 1 or claim 2, wherein: the butterfly-shaped optical cable with the plurality of special-shaped lead-in units is provided with a central reinforcing piece in the center, and the central reinforcing piece is circumscribed with the outer edges, close to the center of the optical cable, of the three special-shaped lead-in units.

6. The butterfly-shaped optical cable having a plurality of special-shaped introduction units according to claim 1 or claim 2, wherein: the model of the optical fiber is G.652, G.653, G.654, G.655, G.656, G.657, A1a, A1b, A1c or A1d.

7. The butterfly-shaped optical cable having a plurality of special-shaped introduction units according to claim 1 or claim 2, wherein: the first special-shaped sheath is made of plastic, and the outer sheath is made of plastic.

8. A butterfly cable with a plurality of profiled drop units as claimed in claim 1 or claim 2, wherein: the width of the first profiled sheath is: [1.9,2.1] mm, the height of the first profiled sheath is: [2.9,3.1] mm.