CN220106056U - Cable with improved heat dissipation - Google Patents

Abstract

The embodiment of the utility model discloses a cable, which comprises a sheath and a conductive unit, wherein the conductive unit is arranged in the sheath in a penetrating way, the conductive unit comprises a composite metal stranded wire, the composite metal stranded wire comprises at least two different metal wires, the length of each metal wire is consistent with that of the conductive unit, the tensile strength of a first metal wire is larger than that of a second metal wire, and the conductivity of the first metal wire is smaller than that of the second metal wire. The cable has good tensile property, and can ensure that the cable performance is not influenced in the construction process.

Description

Cable with improved heat dissipation

Technical Field

The utility model relates to the technical field of communication, in particular to a cable.

Background

FTTR (Fiber To The Room, optical fiber to room) enables home users to enjoy stable gigabit Wi-Fi experience at each user and each moment by deploying optical fibers into the room, and optical signal transmission and remote power supply of an AP (Access Point) are realized in an FTTR system through an optical-electrical composite cable.

At present, most of home decoration photoelectric composite cables are constructed through pipes, and in most cases, the photoelectric composite cables and other cables are constructed through pipes, so that the photoelectric composite cables are required to have certain tensile properties.

The existing photoelectric composite cable generally adopts a copper wire as a conductive unit, the copper wire and the optical fiber are coated with a sheath, the optical fiber and the sheath are of a close-fitting structure, namely, the optical fiber cannot move in the sheath, because the copper wire has good ductility, in the construction process, the copper wire is ductile, so that the resistance is increased, meanwhile, because the copper wire is ductile, the sheath and the optical fiber are driven to stretch when the copper wire stretches, so that the optical fiber is easily broken, and the performance of the photoelectric composite cable is affected.

In addition to the optical-electrical composite cable, other electrically conductive cables present similar problems.

Disclosure of Invention

The cable provided by the embodiment of the utility model has good tensile property, and can ensure that the cable performance is not influenced in the construction process.

In one aspect, the embodiment of the utility model provides a cable, which comprises a sheath and a conductive unit, wherein the conductive unit is arranged in the sheath in a penetrating way, the conductive unit comprises a composite metal stranded wire, the composite metal stranded wire comprises at least two different metal wires, the length of each metal wire is consistent with that of the conductive unit, the tensile strength of a first metal wire is larger than that of a second metal wire, and the conductivity of the first metal wire is smaller than that of the second metal wire.

Therefore, the conductive unit has better tensile property on the basis of having a conductive function through the arrangement of the composite metal stranded wire, namely, the conductive unit is used as a reinforcing piece or a tensile element when being powered, and the cable is not easy to stretch or break in the application scene of pipe penetrating construction, so that better performance can be maintained.

Based on one aspect, the embodiment of the present utility model further provides a first implementation manner of one aspect: the cable further comprises a light unit, the sheath having a cavity extending along an axial direction (i.e. length direction) of the cable, the light unit being located within the cavity. Thus, the cable is an optical-electrical composite cable and is convenient to apply to a networking system comprising optical network equipment.

Based on the first implementation manner of the aspect, the embodiment of the utility model further provides a second implementation manner of the aspect: there is a gap between the light unit and the walls of the cavity. Like this, the light unit can be relative sheath and remove along the length direction of cable, in the scene of field poling construction, makes things convenient for the light unit to fall back, is favorable to reducing the volume of end connector.

Based on the first implementation manner of the aspect, or the second implementation manner of the aspect, the embodiment of the present utility model further provides a third implementation manner of the aspect: the light unit is a bare optical fiber, or alternatively, the light unit is a tight-buffered optical fiber.

The embodiment of the present utility model further provides a fourth implementation manner of the aspect, based on the first implementation manner of the aspect, the second implementation manner of the aspect, or the third implementation manner of the aspect: the conductive units are arranged in two, the light unit is arranged in one, and the light unit is arranged between the two conductive units. In this way, the two conductive elements are separated, avoiding a short circuit between them.

The embodiment of the present utility model further provides a fifth implementation manner of the aspect, based on the first implementation manner of the aspect, the second implementation manner of the aspect, the third implementation manner of the aspect, or the fourth implementation manner of the aspect: the composite metal stranded wire comprises a copper wire and a steel wire, and the copper wire is coated outside the steel wire. Like this, copper wire is as electrically conductive spare, and the copper wire is as tensile original paper, can guarantee conductivity and tensile properties, and the cost is also lower relatively, and the copper wire is aforementioned first kind of metal wire, and the copper wire is aforementioned second kind of metal wire.

Illustratively, the composite metal strands are formed using a drawing process. The drawing process does not reduce the resistance of the conductive unit, and can ensure that the conductive unit has better conductivity.

The embodiment of the present utility model further provides a sixth implementation manner of the aspect, based on the first aspect, the first implementation manner of the aspect, the second implementation manner of the aspect, the third implementation manner of the aspect, or the fourth implementation manner of the aspect: the outer surface of the composite metal stranded wire is provided with a plating layer. Thus, the composite metal stranded wire can be protected.

Illustratively, the sheath is a transparent sheath, and the plating may be a color similar to or consistent with the environmental color of the cable application environment, so as to provide the cable with better invisible effect. In this way, in the application scene of the exposed cable, the transparent sheath and the color similar or identical to the application environment color have a certain invisible effect.

The coating may be, for example, a nickel coating or a tin coating.

The embodiment of the present utility model further provides a seventh implementation manner of the aspect, based on the aspect, or the first implementation manner of the aspect, or the second implementation manner of the aspect, or the third implementation manner of the aspect, or the fourth implementation manner of the aspect: the sheath has a tear groove. Therefore, in the construction process, when the cable needs to be stripped, the cable can be stripped by using a single tool or even without using a tool.

Based on the seventh implementation manner of the aspect, the embodiment of the present utility model further provides an eighth implementation manner of the aspect: the tearing groove comprises two groove walls extending along the length direction of the cable, and the distance between the two groove walls gradually increases along the direction away from the center of the sheath. Thus, the cable stripping device is more beneficial to stripping cables in construction.

Illustratively, the tear groove may have a V-shaped or trapezoidal cross-sectional shape.

Based on the seventh implementation manner of the aspect, the embodiment of the present utility model further provides a ninth implementation manner of the aspect: the sheath is internally provided with a light unit extending along the length direction of the cable, the sheath is provided with two tearing grooves, and the arrangement directions of the two tearing grooves are perpendicular to the arrangement directions of the light unit and the conductive unit. Therefore, the light unit and the conductive unit are easily exposed at the same time after the sheath is stripped, and the construction efficiency is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a cable according to an embodiment of the present utility model;

fig. 2 is a schematic cross-sectional view of a cable according to another embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model provide a cable that may be used in a communication system, such as an FTTR (Fiber To The Room ) networking system, where the cable is used to make an electrical connection between two devices in the system, and depending on the type of cable, may be used to power the devices, or may also be used to transmit signals, or may also be used to both power and transmit signals.

Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a cable according to an embodiment of the utility model.

As shown in fig. 1, in this embodiment, the cable 10 includes a sheath 11, a conductive unit 12 and an optical unit 13, where the conductive unit 12 and the optical unit 13 are both disposed in the sheath, and are spaced apart from each other within the sheath 11, so as to avoid mutual influence.

The conductive unit 12 of the cable 10 is used for supplying power, the optical unit 13 is used for transmitting signals, and the cable 10 is a photoelectric composite cable.

The conductive unit 12 includes a composite metal strand including at least two different metal wires, each of which extends in a length direction of the wire 10, wherein a tensile strength of a first metal wire is greater than that of a second metal wire, and a conductivity of the first metal wire is less than that of the second metal wire, so that the first metal wire mainly plays a tensile role, and the second metal wire mainly plays a conductive role, thereby facilitating selection and implementation.

The specific value of the tensile strength of the first metal wire and the specific value of the electrical conductivity of the second metal wire are related to the construction environment, the construction mode, etc. in practical application, and may be specifically set according to the application requirements, and are not limited to specific values.

After the arrangement, the conductive unit 12 of the cable 10 has a conductive function and good tensile property, that is, the conductive unit 12 is used as a reinforcing member or a tensile element when supplying power, so that the tensile property of the cable 10 can be improved, and the cable 10 is not easy to stretch or break in the application scene of pipe penetrating construction, and can maintain good performance.

In addition, the cable 10 adopts a mode of composite metal stranded wires, can avoid increasing cost on the basis of meeting tensile property, and has better economical efficiency.

Illustratively, the composite metal stranded wire of the conductive unit 12 includes a copper wire and a steel wire, wherein the copper wire is coated outside the steel wire to form a copper-clad steel structure, such that the copper wire serves as a conductive member, the steel wire serves as a tensile member, and the tensile property of the cable 10 can be ensured, that is, the steel wire is the first metal wire and the copper wire is the second metal wire.

The copper wire and the steel wire herein refer to a relatively broad concept, and may include pure metals or alloy forms, as long as the use requirements can be satisfied.

In a specific application, the composite metal stranded wire can be formed by adopting a drawing process, so that the increase of resistance can be avoided in the forming process, and the conductive unit 12 can be ensured to have better conductivity.

The drawing process is a mature process, and is not described in detail here.

In other embodiments, if the conductivity is sufficient, the copper material may be electroplated on the surface of the steel wire rod by electroplating.

In other embodiments, the composite metal stranded wire may also use wires such as aluminum wires or silver wires as the conductive member.

In other embodiments, the composite metal strand may also use wires such as titanium alloy as the tensile element.

In this embodiment, the sheath 11 has a cavity 111 extending in the axial direction of the cable 10, where the axial direction refers to the length direction of the cable 10, and the light unit 13 is located in the cavity 111.

In a specific application, the light unit 13 has a gap with the wall of the cavity 111, as shown in fig. 1, the cross-sectional dimension of the light unit 13 is smaller than the radial dimension of the cavity 111, so that the light unit 13 can move along the length direction of the cable 10 in the cavity 111, i.e. the light unit 13 can move back and forth in the length direction relative to the sheath 11.

In the poling construction scene, the tip accessible of cable 10 becomes the end connector and is connected with the connector, and rethread connector is connected with other equipment, and as before set up the back, the optical unit 13 of cable 10 has the space of backing off, can avoid setting up the structure of guaranteeing the optical unit 13 to roll back on the end connector, like this, the end connector can be designed shorter, has improved the easy mountability of end, also can satisfy the miniaturized trend of current connector.

In actual setting, the size of the gap between the light unit 13 and the cavity wall of the cavity 111 is not limited to a specific value with reference to the ease of movement of the light unit 13.

In a specific application, the optical unit 13 may be a bare optical fiber or a tight-buffered optical fiber.

Wherein the bare optical fiber refers to a fiber core only; the tight-buffered optical fiber is formed by directly and secondarily coating the primary coated optical fiber, the two layers are directly without gaps, the coating layer and the coating layer can also be called as a primary coating layer and a secondary coating layer, and the primary coated optical fiber comprises a fiber core, a cladding layer for wrapping the fiber core and a coating layer outside the cladding layer.

In other embodiments, the light unit 13 may be other types of optical fibers.

In a specific application, the sheath 11 of the cable 10 may be a transparent sheath, that is, the sheath 11 is made of a transparent material, so that the cable 10 has a certain invisible effect in an exposed application scene.

On the basis, the outer surface of the composite metal stranded wire of the conductive unit 12 penetrating through the sheath 11 can be provided with a plating layer, and the color of the plating layer can be consistent with or similar to the environmental color of the application environment so as to achieve the invisible effect.

The coating on the outer surface of the composite metal stranded wire can be nickel coating or tin coating.

In the example shown in fig. 1, the cable 10 is provided with two conductive elements 12 and one light element 13, wherein the light element 13 is located between the two conductive elements 12. Thus, by separating the two conductive units 12, it is possible to avoid a bad failure such as a short circuit in contact between the two conductive units 12.

In particular, one light unit 13 and two conductive units 12 may be arranged in a straight line as much as possible. In practice, the number of conductive elements 12, the number of light elements 13 and the arrangement of each other may be set as desired.

In a specific application, the sheath 11 of the cable 10 has a tearing groove 112, so that the cable 10 can be conveniently peeled according to construction requirements, and the cable 10 can be peeled without a tool or only by using a peeling tool once.

Wherein the tearing groove 112 comprises two groove walls 1121 extending in the length direction of the cable 10, and the distance between the two groove walls 1121 is gradually increased along the direction away from the center of the sheath 11, which is advantageous for the sheath 11 to be peeled off by the tearing groove 112 during construction.

The cross section of the tearing groove 112 may be V-shaped, as shown in fig. 1, the opening of the tearing groove 112 penetrates through the peripheral wall of the sheath 11, and the apex of the V-shaped tearing groove 112 is disposed near the center of the sheath 11, so as to facilitate stripping.

In other embodiments, the tear slot 112 may have a cross-section that is trapezoidal or the like.

In the example shown in fig. 1, the cross section of the cable 10 is substantially rectangular, and two opposite wall portions thereof are provided with tearing grooves 112, so that the cable 10 may be referred to as a butterfly structure, and the two opposite wall portions are provided with the tearing grooves 112, so that the peeling convenience of the cable 10 can be further improved.

When the two tearing grooves 112 are specifically arranged, the arrangement direction of the two tearing grooves 112 is perpendicular to the arrangement direction of the conductive unit 12 and the light unit 11, in the example shown in fig. 1, the two conductive units 12 and the light unit 11 are arranged approximately along the horizontal direction in the figure, the two tearing grooves 112 are arranged along the vertical direction in the figure, and the two tearing grooves 112 are respectively arranged on the upper wall part and the lower wall part of the sheath 11, that is, when the sheath 11 is actually constructed, the conductive unit 12 and the light unit 11 are easily exposed at the same time after the sheath 11 is stripped, so that the construction efficiency is improved.

In other embodiments, the cross-sectional shape of the cable 10 may be other forms, such as a circle or triangle, and may be specifically set according to the application requirements, which is not limited herein.

Referring to fig. 2, fig. 2 is a schematic cross-sectional view of a cable according to another embodiment of the present utility model.

In contrast to the cable 10 shown in fig. 1, the cable 10 shown in fig. 2 is not provided with the light unit 13, but with the conductive unit 12, and in order to illustrate the differences and connections between the example shown in fig. 2 and the example shown in fig. 1, the same functional constitution or structure is schematically indicated by the same reference numerals. The relevant structure of the sheath 11 and the conductive element 12 shown in fig. 2 is arranged similarly to the relevant structure in the embodiment shown in fig. 1 described above and will not be repeated here. In contrast, the cable 10 shown in fig. 1 is a photoelectric composite cable, and the cable shown in fig. 2 is a cable, and is applied in a cable application scenario with tensile requirements.

In the example shown in fig. 2, only one conductive unit 12 is provided in the sheath 11, and the tearing groove 112 is located corresponding to the conductive unit 12, so as to facilitate stripping of the cable 10. In other embodiments, the number of conductive elements 12 may be set as desired.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (8)

1. A cable, comprising:

a sheath;

the conductive unit is arranged in the sheath in a penetrating way; the conductive unit comprises a composite metal stranded wire, the composite metal stranded wire comprises at least two different metal wires, the length of each metal wire is consistent with the length of the conductive unit, the tensile strength of a first metal wire is larger than that of a second metal wire, and the conductivity of the first metal wire is smaller than that of the second metal wire;

the cable also comprises a light unit, wherein the sheath is provided with a cavity extending along the axial direction of the cable, and the light unit is positioned in the cavity;

a gap is provided between the light unit and the cavity wall of the cavity.

2. The cable of claim 1, wherein the light unit is a bare optical fiber or the light unit is a tight-buffered optical fiber.

3. The cable of claim 1, wherein there are two of said conductive elements, one of said light elements, said light element being located between two of said conductive elements.

4. A cable according to any one of claims 1-3, wherein the composite metal strand comprises a copper wire and a steel wire, the copper wire being coated outside the steel wire.

5. A cable according to any one of claims 1-3, wherein the outer surface of the composite metal strand has a plating.

6. A cable according to any one of claims 1-3, wherein the sheath has a tear groove.

7. The cable of claim 6, wherein the tear groove comprises two groove walls extending along a length of the cable, a distance between the two groove walls increasing in a direction away from a center of the sheath.

8. The cable according to claim 6, wherein a light unit extending in a longitudinal direction of the cable is further provided in the sheath, the sheath has two tearing grooves, and an arrangement direction of the two tearing grooves is perpendicular to an arrangement direction of the light unit and the conductive unit.