CN219065819U - Telescopic outer sheath and contain its full dry-type optical cable for connector - Google Patents
Telescopic outer sheath and contain its full dry-type optical cable for connector Download PDFInfo
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- CN219065819U CN219065819U CN202223547477.0U CN202223547477U CN219065819U CN 219065819 U CN219065819 U CN 219065819U CN 202223547477 U CN202223547477 U CN 202223547477U CN 219065819 U CN219065819 U CN 219065819U
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Abstract
The utility model discloses a telescopic outer sheath, which is divided into a plurality of sheath sections; for each group of sheath sections, the sheath comprises N hollow bamboo-shaped sheath bodies which are connected together, wherein N is more than or equal to 2; for each bamboo-shaped sheath body, the bamboo-shaped sheath body is a hollow revolving body, and the outer wall of the bamboo-shaped sheath body is formed by revolving an opening towards a curve far away from a revolving center line, so that the outer wall of the bamboo-shaped sheath body is thick at two ends and thin in the middle; any two adjacent bamboo-shaped sheath bodies of the outer sheath are coaxially arranged; for any adjacent two bamboo-like sheath bodies of each group of sheath segments, there is a difference in the curves of the outer wall formed by the revolution. The outer sheath axially adopts the regular bamboo-shaped sheath body, the bamboo-shaped sheath body can be relatively stretched, so that the optical cable has excellent elastic stretching and bending properties, can rebound and stretch in a short time, is beneficial to prolonging the service life of the optical cable, and is very convenient to install.
Description
Technical Field
The utility model belongs to the field of optical cables, and in particular relates to a telescopic outer sheath and an all-dry optical cable for a connector comprising the same.
Background
Optical fiber communication connectors are loose joints that connect two optical fibers or optical cables into an optical path and can be repeatedly assembled and disassembled, and are commonly used for connection between a light source and the optical fibers, between the optical fibers and the optical fibers, and between the optical fibers and the detector.
The optical cable for the connector is increasingly widely applied due to wide application range and high sensitivity, but the existing optical cable for the connector is in a straight line shape as a whole, the optical cable needs to be matched with the length of the optical cable for many times for cutting and stripping during installation, the production efficiency is low, the optical cable is damaged due to frequent stress and bending, and the application of the optical cable for the connector is limited in part of fields. With the development of precision instruments such as information transmission, higher requirements are also put on the bending performance and production efficiency of the optical cable for the connector.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the utility model provides the telescopic outer sheath and the all-dry optical cable for the connector, which comprises the telescopic outer sheath, wherein the longitudinal direction of the telescopic outer sheath is in a regular bamboo joint shape, and the bamboo joints can be relatively telescopic, so that the optical cable has excellent elastic telescopic and bending properties, the service life of the optical cable is prolonged, and the telescopic outer sheath is convenient to install on the connector.
In order to achieve the above object, according to one aspect of the present utility model, there is provided a telescopic outer sheath divided into a plurality of sheath segments and any adjacent two sheath segments are fixedly connected together;
each group of sheath sections are of a telescopic structure, and each group of sheath sections comprises N hollow bamboo-shaped sheath bodies which are connected together, wherein N is more than or equal to 2;
for each bamboo-shaped sheath body, the bamboo-shaped sheath body is a hollow revolving body, and the outer wall of the bamboo-shaped sheath body is formed by revolving the opening towards a curve far away from the revolving center line, so that the outer wall of the bamboo-shaped sheath body is thick at two ends and thin in the middle;
any two adjacent bamboo-shaped sheath bodies of the outer sheath are coaxially arranged;
for any two adjacent bamboo-shaped sheath bodies of each group of sheath sections, the curves of the two revolving forming outer walls are different, and the two bamboo-shaped sheath bodies are movably sleeved together, so that one bamboo-shaped sheath body can extend into and extend out of the other bamboo-shaped sheath body, and the outer wall of one bamboo-shaped sheath body is always pressed on the inner wall of the other bamboo-shaped sheath body.
Preferably, for each group of the sheath sections, along the set direction, the bamboo-shaped sheath body at the head end is marked as a 1 st bamboo-shaped sheath body, and the bamboo-shaped sheath bodies at the head end and the tail end are respectively marked as a 1 st bamboo-shaped sheath body and an N th bamboo-shaped sheath body;
the ith bamboo-shaped sheath body stretches into the ith+1th bamboo-shaped sheath body, so that each group of sheath sections form a telescopic rod structure, wherein i=1, 2,3, … …, N-2 and N-1.
Preferably, the axial length of each bamboo-shaped sheath body is 1 mm-1000 mm.
Preferably, each set of said jacket segments has a length L when not contracted 0 Length after shrinkage is L 1 And L is 1 /L 0 ＝10％～90％。
Preferably, the value of the outer diameter of any cross section of each bamboo-shaped sheath body is 0.4-10 mm.
Preferably, the outer sheath is made of a low-smoke halogen-free flame retardant material, a thermoplastic polyurethane elastomer, nylon, polycarbonate or polyether ether ketone.
According to another aspect of the present utility model, there is also provided an all-dry optical cable comprising the outer sheath, characterized by further comprising an optical fiber unit disposed within the outer sheath.
Preferably, the optical fiber unit is a micro-cluster tube, a tight-buffered optical fiber or a bare optical fiber which is sleeved with an optical fiber.
Preferably, the optical fiber unit is a micro-cluster tube sleeved with an optical fiber, and the micro-cluster tube is made of a low-smoke halogen-free flame-retardant material, an ethylene-tetrafluoroethylene copolymer, a thermoplastic polyurethane elastomer or polyvinyl chloride.
Preferably, the number of the optical fiber units is 1-12, and the number of the optical fibers in the optical fiber units is 1-24.
In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
1) The outer sheath axially adopts the regular bamboo-shaped sheath body, and the bamboo-shaped sheath body can be relatively stretched, so that the optical cable has excellent elastic stretching and bending properties, can rebound and stretch in a short time, is beneficial to prolonging the service life of the optical cable, and is convenient to install on a connector.
2) As the all-dry optical cable for the connector, the bamboo-shaped sheath body with high elasticity has excellent plasticity, and the production efficiency of the connector can be further improved.
3) The bamboo-shaped sheath body is a revolution body, the inner hole is circular, and the optical fiber unit also has enough movable space under the smaller outer diameter, so that the optical cable has good high-low temperature performance, and the reliability of optical fiber signal transmission is ensured.
Drawings
FIG. 1 is a schematic illustration of the present utility model;
fig. 2 is a schematic representation of any cross section of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 and 2, a telescopic outer sheath is divided into a plurality of sheath sections, and any two adjacent sheath sections are fixedly connected together, wherein the outer sheath is made of a low-smoke halogen-free flame-retardant material, a thermoplastic polyurethane elastomer, nylon, polycarbonate or polyether ether ketone;
each group of sheath sections are of a telescopic structure, each group of sheath sections comprises N hollow bamboo-shaped sheath bodies 3 which are connected together, and N is more than or equal to 2; n is preferably 2-100, and N is the ratio of the actual length of the cable to the total length of each group of jacket segments. The telescopic structure of each group of sheath sections can refer to the existing telescopic rod structure, and the adjacent bamboo-shaped sheath bodies 3 are nested and installed.
Each of the bamboo-shaped sheath bodies 3 is a hollow revolving body, and the outer wall of the bamboo-shaped sheath body 3 is formed by revolving a curve with an opening facing away from the revolving center line, so that the outer wall of the bamboo-shaped sheath body 3 is thick at two ends and thin in the middle. The radial cross section of the bamboo-shaped sheath body 3 is circular at the inner side and the outer side Zhou Jun, the axial cross section is bamboo-shaped according to a fixed rule, and the bamboo-shaped sheath body 3 can be relatively telescopic in the same group of sheath sections.
Any two adjacent bamboo-shaped sheath bodies 3 of the outer sheath are coaxially arranged, the axial length of each bamboo-shaped sheath body 3 is 1-1000 mm, and the expandable length is wider; the outer diameter of any cross section of each bamboo-shaped sheath body 3 has a value of 0.4-10 mm, and can be suitable for various optical fiber units 1.
For any two adjacent bamboo-shaped sheath bodies 3 of each group of sheath sections, the curves of the two revolving forming outer walls are different, and the two bamboo-shaped sheath bodies 3 are movably sleeved together, so that one bamboo-shaped sheath body 3 can extend into and extend out of the other bamboo-shaped sheath body 3, and the outer wall of one bamboo-shaped sheath body 3 is always pressed on the inner wall of the other bamboo-shaped sheath body 3. In the process of realizing the expansion and contraction of the two, one end of one bamboo-shaped sheath body 3 extending into the other bamboo-shaped sheath body 3 is always compressed along the radial direction, and the outer wall is always contacted with the inner wall of the other bamboo-shaped sheath body 3, so that the two can be always connected together in a connecting mode; in addition, the difference of the curves means that the parameter equations of the curves under the same coordinate system can be different, or the parameter equations of the curves under the same coordinate system are the same but the lengths of the curves are different, in short, the curves of the outer walls of the adjacent bamboo-shaped sheath bodies 3 can not be identical, and the curves can be amplified in equal proportion. Preferably, along the direction from the bamboo-shaped sheath body 3 at the head end to the bamboo-shaped sheath body 3 at the tail end of each sheath section, the curves of the outer walls of any two adjacent bamboo-shaped sheath bodies 3 are amplified in equal proportion, and the bamboo-shaped sheath bodies 3 with the same size and shape are distributed periodically and regularly on the whole outer sheath. The bamboo-shaped sheath body 3 of each group of sheath sections can be extruded in N layers.
Because the sheath section is telescopic, when the connector is matched, the length of the stripped section or the reserved section of the outer sheath can be very accurate after the outer sheath is stripped, and the required length can be very well achieved by means of the telescopic performance of the outer sheath, so that the assembly efficiency is improved.
Further, for each group of sheath segments, along the set direction, the bamboo-shaped sheath body 3 at the head end is marked as a 1 st bamboo-shaped sheath body 3, the bamboo-shaped sheath bodies 3 at the head end and the tail are respectively marked as a 1 st bamboo-shaped sheath body 3 and an N th bamboo-shaped sheath body 3, and the i th bamboo-shaped sheath body 3 stretches into the i+1th bamboo-shaped sheath body 3, so that each group of sheath segments forms a telescopic rod structure, wherein i=1, 2,3, … …, N-2, N-1. Then, for each group of the sheath segments, the bamboo-shaped sheath bodies 3 can be regarded as being arranged from small to large along the set direction, and the smaller bamboo-shaped sheath bodies 3 can extend into and out of the larger bamboo-shaped sheath bodies 3 due to the movable sleeving, namely, the larger bamboo-shaped sheath bodies 3 are sleeved with the smaller bamboo-shaped sheath bodies 3.
Further, each set of said jacket segments has a length L when not contracted 0 Length after shrinkage is L 1 And L is 1 /L 0 10-90%, has good contractibility performance and is convenient for adjusting the optical cableSo that the length of the cable matches the desired length of the connector.
According to another aspect of the present utility model, there is also provided a full dry optical cable, including the outer sheath, and further including an optical fiber unit 1 disposed in the outer sheath, the optical fiber unit 1 being a micro-cluster tube sleeved with an optical fiber 2, a tight-sleeved optical fiber 2 or a bare optical fiber 2, and when the optical fiber unit 1 is a micro-cluster tube sleeved with an optical fiber 2, the micro-cluster tube is made of a low smoke halogen-free flame retardant material, an ethylene-tetrafluoroethylene copolymer, a thermoplastic polyurethane elastomer or polyvinyl chloride. The number of the optical fiber units 1 is 1-12, and the number of the optical fibers 2 in the optical fiber units 1 is 1-24.
Referring to fig. 1, there are shown 2 sets of jacket segments, each having 3 bamboo-like jacket bodies 3, along the top-to-bottom direction, for the entire outer jacket, the 1 st, 4 th bamboo-like jacket bodies 3 are identical, the 2 nd, 5 th bamboo-like jacket bodies 3 are identical, and the 3 rd, 6 th bamboo-like jacket bodies 3 are identical, so that the bamboo-like jacket bodies 3 on the outer jacket are periodically distributed. For each group of sheath segments, the 1 st bamboo-shaped sheath body 3 can extend into and out of the 2 nd bamboo-shaped sheath body 3 along the direction from top to bottom, and the 2 nd bamboo-shaped sheath body 3 can extend into and out of the bamboo-shaped sheath body 3. Referring to fig. 2,6 optical fiber units 1 are shown in the circular inner hole of the bamboo-shaped sheath body 3 to form a multi-core all-dry optical cable. The optical fiber units 1 are preferably tightly sleeved with optical fibers 2, 1 optical fiber 2 is coated in a tightly sleeved pipe of each optical fiber unit 1, and the 6 optical fiber units 1 are arranged in an array in two rows and three columns; each group of sheath sections of the outer sheath comprises 3 bamboo-shaped sheath bodies 3.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A telescopic outer sheath, characterized in that the outer sheath is divided into a plurality of sheath sections and any two adjacent sheath sections are fixedly connected together;
each group of sheath sections are of a telescopic structure, and each group of sheath sections comprises N hollow bamboo-shaped sheath bodies which are connected together, wherein N is more than or equal to 2;
for each bamboo-shaped sheath body, the bamboo-shaped sheath body is a hollow revolving body, and the outer wall of the bamboo-shaped sheath body is formed by revolving the opening towards a curve far away from the revolving center line, so that the outer wall of the bamboo-shaped sheath body is thick at two ends and thin in the middle;
any two adjacent bamboo-shaped sheath bodies of the outer sheath are coaxially arranged;
for any two adjacent bamboo-shaped sheath bodies of each group of sheath sections, the curves of the two revolving forming outer walls are different, and the two bamboo-shaped sheath bodies are movably sleeved together, so that one bamboo-shaped sheath body can extend into and extend out of the other bamboo-shaped sheath body, and the outer wall of one bamboo-shaped sheath body is always pressed on the inner wall of the other bamboo-shaped sheath body.
2. A telescopic outer sheath according to claim 1, wherein for each set of sheath segments, the leading and trailing bamboo joint sheath bodies are denoted as 1 st bamboo joint sheath body and N th bamboo joint sheath body, respectively, along a set direction;
the ith bamboo-shaped sheath body stretches into the ith+1th bamboo-shaped sheath body, so that each group of sheath sections form a telescopic rod structure, wherein i=1, 2,3, … …, N-2 and N-1.
3. A telescopic outer sheath according to claim 1, wherein the axial length of each of the bamboo-like sheath bodies is 1mm to 1000mm.
4. A telescopic outer sheath according to claim 1, wherein each set of sheath segments has a length L when not contracted 0 Length after shrinkage is L 1 And L is 1 /L 0 ＝10％～90％。
5. A telescopic outer sheath according to claim 1, wherein the outer diameter of any cross section of each bamboo-like sheath body has a value of 0.4mm to 10mm.
6. The telescoping outer sheath of claim 1, wherein the outer sheath is made of a low smoke, halogen free flame retardant material, thermoplastic polyurethane elastomer, nylon, polycarbonate, or polyetheretherketone.
7. An all-dry optical cable for a connector, comprising the outer sheath of any one of claims 1 to 6, and further comprising an optical fiber unit disposed within the outer sheath.
8. The all-dry optical cable for connectors according to claim 7, wherein the optical fiber unit is a micro cluster tube, a tight-buffered optical fiber or a bare optical fiber sleeved with an optical fiber.
9. The all-dry optical cable for connectors according to claim 7, wherein the optical fiber unit is a micro-cluster tube in which an optical fiber is housed, and the micro-cluster tube is made of a low smoke halogen-free flame retardant material, an ethylene-tetrafluoroethylene copolymer, a thermoplastic polyurethane elastomer, or polyvinyl chloride.
10. The all-dry optical cable for connectors as claimed in claim 7, wherein the number of the optical fiber units is 1 to 12, and the number of the optical fibers in the optical fiber units is 1 to 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223547477.0U CN219065819U (en) | 2022-12-29 | 2022-12-29 | Telescopic outer sheath and contain its full dry-type optical cable for connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223547477.0U CN219065819U (en) | 2022-12-29 | 2022-12-29 | Telescopic outer sheath and contain its full dry-type optical cable for connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219065819U true CN219065819U (en) | 2023-05-23 |
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ID=86346249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223547477.0U Active CN219065819U (en) | 2022-12-29 | 2022-12-29 | Telescopic outer sheath and contain its full dry-type optical cable for connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219065819U (en) |
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2022
- 2022-12-29 CN CN202223547477.0U patent/CN219065819U/en active Active
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