A multi-unit butterfly drop cable having a composite component

Abstract

The application belongs to the technical field of optical cable and discloses a multi-unit butterfly-shaped lead-in optical cable with a composite component, which has an integrated structure; the composite component is composed of m connecting strips and n butterfly units, m is greater than or equal to 3, n is greater than or equal to 2, and m and n are integers; each butterfly unit is composed of two reinforcing members, an optical communication component and a butterfly-shaped sheath; each butterfly-shaped sheath is connected with a connecting strip on the outer edge of the left side and the right side, and the space above and below the connecting strip is a second and a first groove; the cross section of the composite component is in a row structure, all the connecting strips are on the same straight line, all the butterfly units are arranged in parallel, and the left-right symmetry planes of each butterfly-shaped sheath are perpendicular to the connecting strips; each butterfly unit is symmetric about the up-down symmetry plane of the connecting strip. The application has the following main beneficial technical effects: simple structure, easy assembly, better mechanical performance, significantly reduced optical cable size, more stable structure, more reliable, more convenient and flexible use.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of optical cables, in particular to a multi-unit butterfly-shaped drop cable with composite components. BACKGROUND

[0002] With the promotion and popularization of FTTH, FTTR and FTTC, the use of butterfly-shaped drop cables needs to increase day by day. Because different users in the same floor need different butterfly-shaped drop cables, multiple installations are often required, resulting in an increase in cost.

[0003] CN115097588A discloses a multi-unit butterfly-shaped drop cable, which has a plurality of butterfly units and a plurality of clamping components. The butterfly unit is composed of an optical fiber, a reinforcing member and a unit sheath. The unit sheath has a first fitting port and a second fitting port. The clamping component is composed of a clamping body. In the assembled state, the outer edges of all the butterfly units are on the same cylindrical surface. One end of the clamping component between adjacent butterfly units is embedded in the second fitting port of one butterfly unit, and the other end of the clamping component between adjacent butterfly units is embedded in the first fitting port of another butterfly unit. It has the advantages of easy expansion of butterfly units, flexible and convenient assembly, compact structure, small space occupation, low material consumption and low cost.

[0004] However, for the structure of the prior art, although it can be expanded by clamping of the butterfly unit and the clamping component, when a large number of butterfly units are needed, the assembly speed is slow and the structure stability after assembly is poor. Because the end portions in the length direction on the cross section of the butterfly-shaped drop unit are clamped by the components, the size of the formed optical cable is large, the central space is large and the stability is poor, and it is scattered by slight touching, which limits the use. SUMMARY

[0005] To solve the above problems, the purpose of the present application is to disclose a multi-unit butterfly-shaped drop cable with composite components, which is realized by the following technical scheme.

[0006] A multi-unit butterfly-shaped drop cable with a composite component, having a composite component with an integrated structure; the composite component is composed of m connecting strips and n butterfly-shaped units, m≥3, n≥2, m and n are integers; each butterfly-shaped unit is composed of two reinforcing members, an optical communication component and a butterfly-shaped sheath, the two reinforcing members are located on the upper and lower sides of the optical communication component, the butterfly-shaped sheath integrally covers the reinforcing members and the optical communication component, the cross section of the butterfly-shaped sheath is runway-shaped or rectangular, and the optical communication component is located in the center of the butterfly-shaped sheath; each butterfly-shaped sheath is connected with a connecting strip on the left and right outer edges of the butterfly-shaped sheath, the space above the connecting strip is a second groove, and the space below the connecting strip is a first groove; the cross section of the composite component is in a row structure, all the connecting strips are on the same straight line, all the butterfly-shaped units are arranged in parallel, and the left-right symmetry planes of each butterfly-shaped sheath are perpendicular to the connecting strips; the upper-lower symmetry planes of all the connecting strips are in the same plane, and each butterfly-shaped unit is symmetric about the upper-lower symmetry plane of the connecting strip.

[0007] A multi-unit butterfly-shaped drop cable with a composite component, having a plurality of the above-mentioned composite components, the plurality of composite components are distributed in a stacked manner, and between the upper and lower adjacent composite components: the butterfly-shaped sheath below the connecting strip of the upper composite component is embedded in the second groove of the lower composite component, and the butterfly-shaped sheath above the connecting strip of the lower composite component is embedded in the first groove of the upper composite component, and all the composite components are embedded to form an integral whole.

[0008] In this scheme, the upper side of the outermost connecting strip also constitutes a second groove, and the lower side of the outermost connecting strip also constitutes a first groove; when the outermost connecting strip exists, it supports the corresponding butterfly-shaped sheath, but if the outermost connecting strip does not exist, since the single composite component is an integrated structure, the middle connecting strip can also support and receive the weight of the edge butterfly-shaped unit.

[0009] A multi-unit butterfly-shaped drop cable with a composite component, having a composite component with the above-mentioned composite component, and the outermost connecting strips of the composite component are bonded to form a closed circular structure, all the connecting strips are on a first circumference, all the butterfly-shaped units are arranged in a circle, the left-right symmetry planes of each butterfly-shaped sheath pass through the center of the first circumference, the top end of the butterfly-shaped sheath located in the interior is on a second circumference, the interior space surrounded by the second circumference is a central cavity, the central cavity is in communication with the first groove, and the cross section of the composite component is in a circular structure.

[0010] A multi-unit butterfly-shaped drop cable with composite components, having a plurality of identical composite components as described above, or having X first composite components and Y second composite components, X and Y being natural numbers; X and Y cannot be zero at the same time; the first composite components and the second composite components are both the composite components as described above, in the first composite components, m=4 and n=3, and in the second composite components, m=3 and n=2; all the composite components are spliced and bonded to form a closed circular structure, all the connecting strips are on a first circumference, all the butterfly units are arranged in a circular manner, the left-right symmetry plane of each butterfly jacket passes through the center of the first circumference, the top end of the butterfly jacket inside is on a second circumference, and the internal space around the second circumference is a central cavity, which is in communication with the first groove, and the cross section of the composite component is in a circular structure.

[0011] The combination of the first composite components and the second composite components described above can form any multi-unit structure with the number of butterfly units greater than 1, and there are at most only two types of composite components, which are quite convenient for production, storage and assembly. Of course, for specific use scenarios, the first composite components and the second composite components described above can not be limited, that is, the values of m and n can be adjusted as needed.

[0012] The multi-unit butterfly-shaped drop cable with composite components described above has a support component in the central cavity, which is composed of a reinforcing member, a cushion layer, at least three support members and an expansion layer. The cushion layer is wrapped outside the reinforcing member, the support members are symmetrically distributed outside the cushion layer, one end of the support members is connected to the outer surface of the cushion layer, the expansion layer is located outside the support members, and the other end of the support members is connected to the inner surface of the expansion layer. The outer surface of the expansion layer is in line contact with the butterfly jacket of each butterfly unit, and the line contact is tangent contact.

[0013] The support component serves to support and position the composite components, making the structure more stable, and actually has a transmission function of the optical cable. The support members are symmetrically distributed outside the cushion layer, and can be straight elements or curved elements, as long as they have a certain strength and hardness, or have a certain strength and hardness under certain conditions, such as being inflated to have a certain strength and hardness, etc. For example, they are elastic elements. The expansion layer has a large deformation function and has high elasticity and elastic recovery performance, such as materials similar to balloon bodies or polyurethane materials, etc. When a gas is filled between the cushion layer and the expansion layer, the expansion layer deforms, increases and expands to a certain diameter when a certain pressure is maintained. At different pressures, it can have different diameters, which can adapt to the structures of different numbers of butterfly units, and can also make the butterfly units in the optical cable change as needed, achieving the purpose of flexible use and flexible assembly.

[0014] The application has the following main beneficial technical effects: simple structure, easy to assemble, better mechanical properties, significantly reduced optical cable size, more stable structure, more reliable, and more convenient and flexible to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0016] Figure 2 A schematic view of the cross-sectional structure of a composite part used in Example 1. Figure 1 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0017] Figure 3 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0018] Figure 4 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0019] Figure 5 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0020] Figure 6 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0021] Figure 7 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0022] Figure 8 A schematic view of the cross-sectional structure of a composite part used in Example 1. Figure 7 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0023] Figure 9 A schematic view of the cross-sectional structure of a composite part used in Example 1.

[0024] Figure 10 A schematic view of the cross-sectional structure of a composite part used in Example 1. DETAILED DESCRIPTION

[0025] In order to better understand and implement the patent, the marks in the drawings will be described in detail in conjunction with the drawings.

[0026] In the figure: 1 - composite part, 2 - support part, 10 - first groove, 11 - connecting strip, 12 - butterfly unit, 100 - central cavity, 121 - reinforcing member, 122 - optical communication member, 123 - butterfly sheath, 21 - reinforcing member, 22 - cushion layer, 23 - support member, 24 - stretchable layer.

[0027] Example 1: see Figures 1 to 4 , a multi-unit butterfly drop cable with a composite part, having a composite part 1, a support part 2;

[0028] The composite component 1 is composed of six connecting strips 11 and six butterfly units 12; each butterfly unit 12 is composed of two reinforcing members 121, an optical communication component 122 and a butterfly sheath 123, the two reinforcing members 121 are respectively located on the upper and lower sides of the optical communication component 122, the butterfly sheath 123 entirely covers the reinforcing members 121 and the optical communication component 122, the cross section of the butterfly sheath 123 is runway-shaped, and the optical communication component 122 is located in the center of the butterfly sheath 123; the connecting strips 11 are connected to the outer edges of the butterfly sheaths 123 on the left and right sides of the optical communication component 122; the connecting strips 11 between adjacent butterfly units 12 divide the outer space of the connecting strips 11 into second grooves and divide the inner space into first grooves 10; the composite component 1 is a one-piece structure, all the connecting strips 11 and the butterfly units 12 form a closed first cylindrical structure; the left-right symmetry planes of each butterfly unit 12 pass through the center axis of the first cylinder; the internal space surrounded by all the butterfly units 12 and the connecting strips 11 is a central cavity 100, and each first groove 10 is in communication with the central cavity 100;

[0029] The support component 2 is composed of a reinforcing member 21, a cushion layer 22, at least three supporting members 23 and an expansion layer 24, the cushion layer 22 covers the reinforcing member 21, the supporting members 23 are symmetrically distributed outside the cushion layer 22, one end of the supporting members 23 is connected to the outer surface of the cushion layer 22, and the expansion layer 24 is located outside the supporting members 23, and the other end of the supporting members 23 is connected to the inner surface of the expansion layer 24; the support component 2 is located in the central cavity 100;

[0030] The outer surface of the expansion layer 24 is in line contact with the butterfly sheath 123 of each butterfly unit 12.

[0031] Of course, as a further improvement or saving, the support component 2 can be omitted in the embodiment.

[0032] See Figure 3 In the embodiment, two composite components 1 can be spliced to form, when splicing, the splicing part is bonded, so that the two composite components 1 are combined into one and become a complete first cylindrical structure; wherein each composite component 1 has only four connecting strips 11 and three butterfly units 12; wherein the length of the most edge connecting strip 11 is preferably half of the length of the middle connecting strip 11.

[0033] See Figure 4 In the embodiment, three composite components 1 can be spliced to form, when splicing, the splicing part is bonded, so that the three composite components 1 are combined into one and become a complete first cylindrical structure; wherein each composite component 1 has only three connecting strips 11 and two butterfly units 12; wherein the length of the most edge connecting strip 11 is preferably half of the length of the middle connecting strip 11.

[0034] The runway shape described in the present embodiment refers to a structure with a rectangular middle and semicircular ends.

[0035] Embodiment 2: Please see Figures 5 to 6 and refer to Figures 2 to 4 A multi-unit butterfly-shaped drop cable with a composite component, substantially the same as Embodiment 1, except that in the formed cable, the composite component 1 is composed of eight connecting strips 11 and eight butterfly units 12; there is no support component 2.

[0036] In addition, in the present embodiment, two composite components 1 can be spliced to form, and when splicing, the splicing part is bonded to combine the two composite components 1 into one and become a complete first cylindrical structure; wherein each composite component 1 only has five connecting strips 11 and four butterfly units 12; wherein the length of the most edge connecting strip 11 is preferably half the length of the middle connecting strip 11.

[0037] Of course, in the present embodiment, two Figure 3 composite components 1 in Embodiment 1 can be spliced to form; or four Figure 4 composite components 1 in Embodiment 1 can be spliced to form; the splicing part is firmly bonded. Figure 4

[0038] Embodiment 3: Please see Figures 7 to 8 and refer to Figures 3 to 4 and Figure 6 A multi-unit butterfly-shaped drop cable with a composite component, composed of a composite component 1, the composite component 1 is composed of connecting strips 11 and butterfly units 12 arranged in intervals, the butterfly units 12 are arranged in parallel, the connecting strips 11 connect adjacent butterfly units 12, the connecting strips 11 between adjacent butterfly units 12 divide the connecting strips 11 into a second groove above the connecting strips 11 and a first groove below the connecting strips 11; the upper and lower symmetry planes of the connecting strips 11 pass through the upper and lower symmetry planes of the butterfly-shaped sheath 123.

[0039] In the present embodiment, the left surface of the butterfly-shaped sheath 123 of the leftmost butterfly unit 12 has a connecting strip extending to the left; the right surface of the butterfly-shaped sheath 123 of the rightmost butterfly unit 12 has a connecting strip extending to the right.

[0040] In the present embodiment, the upper ends of the butterfly-shaped sheaths 123 of all the butterfly units 12 are in the same plane; the lower ends of the butterfly-shaped sheaths 123 of all the butterfly units 12 are in the same plane.

[0041] Embodiment 4: Please see Figure 9 and refer to Figures 7 to 8 ​A multi-unit butterfly-shaped optical cable with composite components, which is composed of five composite components 1 described in Embodiment 3, the composite components 1 are stacked in an up-down staggered manner, the butterfly-shaped sheath of the upper composite component 1 is placed on the first groove of the lower composite component 1; the butterfly-shaped sheath of the upper composite component 1 is not embedded into the first groove of the lower composite component 1, but is bonded with the butterfly-shaped sheath of the lower composite component 1, and all the composite components 1 form an integral whole.

[0042] Of course, in the present embodiment, the composite component 1 is not limited to five, but can also be other numbers, forming a multi-layer stack.

[0043] Embodiment 5: see Figure 10 , and refer to Figures 7 to 9 A multi-unit butterfly-shaped optical cable with composite components, referring to Embodiment 4, the difference is that there are three composite components 1; the number of connecting strips 11 and butterfly units 12 in each composite component 1 is different from that in Embodiment 4; the cross section of the butterfly-shaped sheath 123 is rectangular; in the upper and lower adjacent composite components, the butterfly-shaped sheath 123 below the connecting strip 11 of the upper composite component 1 is embedded into the second groove of the lower composite component 1, and the butterfly-shaped sheath 123 above the connecting strip 11 of the lower composite component 1 is embedded into the first groove of the upper composite component 1; when the width of the butterfly-shaped sheath 123 matches the width of the first groove and the second groove, bonding is not required, the embedding of the butterfly-shaped sheath 123 and the first groove and the second groove makes the composite components 1 combined into an integral whole, and easy to separate and use; of course, a little adhesive can also be applied at the engagement or embedding or contact to further make the composite components 1 combined into an integral whole.

[0044] In Embodiments 3 and 5, the number of butterfly units in a single composite component is at least two; for example, when the number of butterfly units in a single composite component is two, the structure of Figure 4 can be formed by bending the connecting strip; when the number of butterfly units in a single composite component is three, the structure of Figure 3 can be formed by bending the connecting strip; when the number of butterfly units in a single composite component is four, the structure of Figure 6 can be formed by bending the connecting strip; and other structures can be realized by those skilled in the art under the above inspiration.

[0045] In the present application, the number of butterfly units in the final optical cable in Embodiments 1 to 3 is not less than three.

[0046] The multi-unit butterfly-shaped optical cable with composite components described in the present application has one composite component, and the composite component is a one-piece structure.

[0047] The composite component is composed of m connecting strips and n butterfly units, m≥3, n≥2, and m and n are integers; each butterfly unit is composed of two reinforcing members, an optical communication component, and a butterfly-shaped protective layer, the two reinforcing members are located on the upper and lower sides of the optical communication component, the butterfly-shaped protective layer entirely covers the reinforcing members and the optical communication component, the cross section of the butterfly-shaped protective layer is runway-shaped or rectangular, and the optical communication component is located in the center of the butterfly-shaped protective layer; each butterfly-shaped protective layer is connected with one connecting strip on the outer edge of the left side and the right side, the space above the connecting strip is a second groove, and the space below the connecting strip is a first groove; m-n=-1, at this time, the outer edge of the edge butterfly unit has no connecting strip; or m-n=1, at this time, the outer edge of the edge butterfly unit has a connecting strip; or m=n, at this time, only one of the outer edges of the two edge butterfly units has a connecting strip.

[0048] The cross section of the composite component is in a row structure or a circular structure.

[0049] When the cross section of the composite component is in a row structure, all the connecting strips are on the same straight line, all the butterfly units are arranged in parallel, and the left-right symmetry planes of each butterfly-shaped protective layer are perpendicular to the connecting strips; the upper-lower symmetry planes of all the connecting strips are in the same plane, and each butterfly unit is symmetric about the upper-lower symmetry plane of the connecting strip.

[0050] When the cross section of the composite component is in a circular structure, the edge connecting strips are bonded, the composite component forms a closed circular structure, all the connecting strips are on a first circumference, all the butterfly units are arranged in a circle, the left-right symmetry planes of each butterfly-shaped protective layer pass through the center of the first circumference, the top end of the butterfly-shaped protective layer inside is on a second circumference, the internal space surrounded by the second circumference is a central cavity, and the central cavity is connected with the first groove.

[0051] In this application, the butterfly units in the same composite component are the same, having the same shape and the same size.

[0052] In the above embodiment in which the cross section of the composite component is in a row structure, in a plane perpendicular to the axis in the extension direction of the butterfly-shaped protective layer, the uppermost end of the butterfly-shaped protective layer is in the same plane, the lowermost end of the butterfly-shaped protective layer is in the same plane, the distance between the uppermost end of the butterfly-shaped protective layer and the lowermost end of the butterfly-shaped protective layer is the length or height of the butterfly-shaped protective layer, the distance between the leftmost side of the butterfly-shaped protective layer and the rightmost side of the butterfly-shaped protective layer is the width of the butterfly-shaped protective layer, and the length or height of the butterfly-shaped protective layer is greater than the width of the butterfly-shaped protective layer. The cross section of the composite component in a circular structure is formed by winding or bending the cross section of the composite component in a row structure, and then bonding the free ends of the edge connecting strips.

[0053] In the above embodiment, m = n + 1, in order to make it better implementation, the length of the intermediate connecting strip is equal, the sum of the length of the two most edge connecting strip is equal to the length of any one of the intermediate connecting strip.

[0054] Of course, in the implementation of the cross section of the composite component in the form of an array, m + 1 = n, that is, the connecting strip on the outside of the most edge butterfly sheath is not provided, that is, only the butterfly sheath has a connecting strip, which saves material and is more beautiful.

[0055] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a plastic material for the connecting strip.

[0056] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a steel wire or a copper wire or an aluminum wire or an iron wire or a glass fiber reinforced plastic rod or aramid yarn as the reinforcing material.

[0057] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a single optical fiber or an optical fiber ribbon or a tight-fitting optical fiber as the optical communication component.

[0058] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a plastic material for the butterfly sheath.

[0059] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a steel wire or a copper wire or an aluminum wire or an iron wire or a glass fiber reinforced plastic rod or aramid yarn as the reinforcing material.

[0060] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a plastic material for the cushion layer.

[0061] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a plastic material for the support.

[0062] The multi-unit butterfly-shaped optical cable with a composite component described in the present application has a plastic material for the expansion layer.

[0063] The composite component in the present application is a straight line structure, and a staggered and stacked structure of multiple straight line structures; another is a circular closed structure formed by connecting the head and tail of a single straight line structure; another is a circular closed structure formed by bending and splicing multiple composite components; and another is: the center cavity formed by the other and the other.

[0064] The present application has the advantages of fast assembly, stable structure after assembly, and excellent mechanical properties; when the circular closed structure is in the form of the butterfly-shaped sheath of the butterfly unit towards the center of the circle, the size of the optical cable is significantly reduced, and the size of the center cavity is also reduced; and the structure is stable and reliable, and will not easily spread out, so it is convenient and flexible to use.

[0065] In the present application, the material of the connecting strip is plastic, which is a material that can be melted by ultrasonic waves. When the connecting strips are spliced, the end surfaces of the connecting strips are bonded together by ultrasonic heating, and the production speed is very fast.

[0066] In the present application, when there is only one composite component, the circular structure can also be formed by one-piece extrusion, i.e. without the need for bonding by connecting strips to form a circular periphery. This way of production is also very convenient.

[0067] The present application has the following main beneficial technical effects: simple structure, easy to assemble, better mechanical properties, significantly reduced optical cable size, more stable structure, more reliable, and more convenient and flexible to use.

[0068] The present application can be used as an intelligent sensor and an intelligent sensing element. Since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor and an image sensor. Since it transmits optical signals through the principle of total reflection, it can also be used as a distance sensor. The optical fiber in the present application itself is an optical waveguide, so it can be used as an optical waveguide, such as an array optical waveguide and a diffractive optical waveguide. The present application can also be used in the field of optical computing, as an optical computing, optical computing, and optical network computing, as part of optical chip computing.

[0069] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as a limitation of the present application. The protection scope of the present application should be based on the technical solutions claimed in the claims, including equivalent replacement solutions of the technical features claimed in the claims. That is, within this scope, equivalent replacement improvements are also within the protection scope of the present application.

Claims

1. A multi-unit butterfly cable with composite components, comprising a plurality of composite components, the composite components being of an integrated structure; each composite component is composed of m connecting strips and n butterfly units, m≥3, n≥2, m and n being integers; each butterfly unit is composed of two reinforcing members, an optical communication component and a butterfly jacket, the two reinforcing members being located on the upper and lower sides of the optical communication component respectively, the butterfly jacket entirely covering the reinforcing members and the optical communication component, the cross section of the butterfly jacket being in the shape of a runway or a rectangle, the optical communication component being located in the center of the butterfly jacket; each butterfly jacket has a connecting strip connected to the outer edge of the left side and the right side of the butterfly jacket respectively, the space above the connecting strip being a second groove, and the space below the connecting strip being a first groove; the cross section of the composite component is in a row structure, all the connecting strips being in the same straight line, and all the butterfly units being arranged in parallel, the left-right symmetry plane of each butterfly jacket being perpendicular to the connecting strip; the upper-lower symmetry plane of all the connecting strips is in the same plane, and each butterfly unit is symmetrical about the upper-lower symmetry plane of the connecting strip; characterized in that: The plurality of composite components are arranged in a stacked manner, between the upper and lower adjacent composite components: the butterfly-shaped sheath of the upper composite component below the connecting strip is embedded in the second groove of the lower composite component, and the butterfly-shaped sheath of the lower composite component above the connecting strip is embedded in the first groove of the upper composite component, and all the composite components are embedded to form an integral whole.

2. The multi-unit butterfly drop cable having a composite component of claim 1, wherein: The material of the reinforcing member is steel wire or copper wire or aluminum wire or iron wire or glass fiber reinforced plastic rod or aramid yarn.

3. The multi-unit butterfly drop cable having a composite component of claim 1, wherein: The material of the connecting strip is plastic.

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