Wire rod capable of stretching out and drawing back autonomously

Abstract

The utility model discloses a wire rod capable of automatically stretching out and drawing back. The wire rod comprises a stretch yarn core wire and a conducting layer. The stretch yarn core wire comprises an elastic rubber strip body and an elastic friction layer wrapping the outer surface of the elastic rubber strip body, and the elastic friction layer is of a spiral net structure woven by multiple strands of friction wires; the conductive layer wraps the outer surface of the stretch yarn core wire, the conductive layer is of a spiral net structure formed by weaving multiple strands of wires, and the wires comprise conductive wires and stay wires. The cable has the advantages of larger elongation ratio, longer service life, attractive appearance, easy realization of multiple strands, difficulty in peeling and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, and in particular to a self-expanding wire. Background Art

[0002] Traditional wires do not have the function of extension and retraction, and cannot be used in some occasions. The emergence of elastic wires solves this problem. There are two main types of existing elastic wires, one is a spiral elastic wire (such as a landline telephone microphone wire), and the other is a braided elastic wire. The outer diameter of the spiral elastic wire is large in the natural elongation state, and it cannot pass through a hole smaller than its outer diameter. There are also certain limitations on the use scenario; the wire body is relatively loose, which affects the appearance of the finished product, and a third fixed layer must be introduced; the arrangement of the same-direction spiral wire is difficult to realize the processing of multiple strands (≥4) of wire harnesses. The metal wire of the braided elastic wire is thinner, and repeated expansion and contraction and bending will cause the metal wire to break, so there is a relatively serious problem of short service life; the surface is stiff, which affects the stretching ratio; during the stretching process, the friction coefficient between the metal wire and the rubber strip is small, and peeling (referring to the phenomenon of length movement between the conductive mesh woven with metal wire and the rubber strip wrapped with the conductive mesh) is prone to occur. Utility Model Content

[0003] To this end, the utility model provides a self-retractable wire to solve or alleviate one or more of the above problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A self-retractable wire comprises an elastic wire core and a conductive layer; the elastic wire core comprises an elastic rubber strip body and an elastic friction layer wrapped on the outer surface of the elastic rubber strip body, and the elastic friction layer is a spiral mesh structure woven from multiple strands of friction wires; the conductive layer is wrapped on the outer surface of the elastic wire core, and the conductive layer is a spiral mesh structure woven from multiple strands of conductive wires, and the conductive wires comprise conductive wires and pull wires.

[0006] Through the above technical scheme, on the one hand, an elastic friction layer is arranged on the surface of the elastic rubber strip body, so as to improve the friction between the elastic wire core and the conductive layer and avoid the peeling problem; on the other hand, the wires woven to form the conductive layer contain not only conductive wires but also pulling wires. By arranging the pulling wires, the wires can be prevented from being broken or the probability of being broken can be reduced, thereby improving the service life.

[0007] Furthermore, the elastic rubber strip body is a rubber strip with a circular or regular polygonal cross section.

[0008] Rubber strips are mature products. Using rubber strips as the elastic strip body is cheap on the one hand, and has good elasticity on the other hand, and can produce wires with a larger stretch ratio (the stretch ratio depends on the elasticity of the elastic strip body on the one hand, and on the structure of the conductive layer on the other).

[0009] Furthermore, at least one elastic rubber strip body is wrapped in the elastic friction layer.

[0010] Through the above technical solution, one elastic rubber strip body can be used, and a plurality of elastic rubber strip bodies can be used. The elastic wire core wire thus formed can be suitable for autonomously retractable wires with different requirements.

[0011] Furthermore, at least one elastic wire core wire is wrapped in the conductive layer.

[0012] Through the above technical solution, one elastic wire core wire or multiple elastic wire core wires can be used, so that the self-retractable wire can meet different usage requirements and has a wider range of applications.

[0013] Furthermore, the friction thread is nylon thread, cotton thread, fiber thread, spandex thread or latex thread.

[0014] Through the above technical solution, the elastic friction layer formed by these types of friction lines woven on the outer surface of the elastic rubber strip body has a greater friction coefficient with the conductive layer, further eliminating the peeling problem.

[0015] Furthermore, the outer side of the wire is painted with insulating paint.

[0016] Through the above technical solution, the wires that are part of the conductive layer can be insulated from each other, and different wires can transmit different signals without crosstalk.

[0017] Furthermore, the insulating paint has one or more colors.

[0018] Through the above technical solution, when only conduction or transmission of one electrical signal is required, the same color can be used; when different electrical signals need to be transmitted, multiple colors can be used.

[0019] Furthermore, the conductive wire is a metal wire monofilament, a metal wire strand, an enameled wire, a metal-plated wire or a metal wire with a flexible outer sheath, and the pulling wire is a nylon wire, a cotton wire or a fiber wire, and the conductive wire and the pulling wire are twisted to form a strand.

[0020] Through the above technical solution, the conductive wire and the pulling wire are twisted together, so that the tensile strength of the wire is greatly improved. When the conductive layer is repeatedly stretched and bent, the wire is not easy to break, which greatly improves the service life.

[0021] The utility model has the following advantages:

[0022] It is a type of braided elastic wire, so it does not have the shortcomings of spiral elastic wires such as limited usage scenarios and lack of aesthetics. It is a braided elastic wire without the thicker outermost insulation layer, so it has a better elongation ratio. An elastic friction layer is provided to increase the friction of the conductive layer without affecting the elastic elongation, thus solving the peeling problem.

[0023] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] Figure 1 A schematic diagram of the structure of a self-retractable wire provided in an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A magnified view of the middle AA;

[0028] Figure 3 for Figure 2 Enlarged view of B.

[0029] In the figure: 1-elastic wire core wire, 11-elastic rubber strip body, 12-elastic friction layer, 121-friction wire, 2-conductive layer, 21-conductive wire, 211-conductive wire, 212-pull wire. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] like Figure 1-3 As shown, this embodiment provides an autonomously retractable wire, including an elastic wire core wire 1 and a conductive layer 2; the elastic wire core wire 1 includes an elastic rubber strip body 11 and an elastic friction layer 12 wrapped on the surface of the elastic rubber strip body 11, and the elastic friction layer 12 is a spiral mesh structure woven from multiple strands of friction wires 121; the conductive layer 2 is wrapped on the outer surface of the elastic wire core wire 1, and the conductive layer 2 is a spiral mesh structure woven from multiple strands of conductive wires 21, and the conductive wires 21 include conductive wires 211 and pull wires 212.

[0032] On the one hand, an elastic friction layer 12 is arranged on the surface of the elastic rubber strip body 11, so as to increase the friction between the elastic wire core wire 1 and the conductive layer 2 and avoid peeling problems; on the other hand, the conductive wire 21 woven to form the conductive layer 2 contains not only conductive wires 211 but also pull wires 212. By arranging the pull wires 212, the conductive wires 21 can be prevented from being broken or the probability of being broken can be reduced, thereby increasing the service life.

[0033] In this embodiment, the elastic rubber strip body 11 is a rubber strip with a circular or regular polygonal cross section. Using a rubber strip as the elastic rubber strip body 11 is cheap on the one hand, and has good elasticity on the other hand, and can produce wires with a larger stretch ratio. It should be noted that the stretch ratio depends on the elasticity of the elastic rubber strip body 11 on the one hand, and on the structure of the conductive layer 2 (such as the spiral mesh structure in this application) on the other hand.

[0034] In this embodiment, at least one elastic rubber strip body 11 is wrapped in the elastic friction layer 12, and one elastic rubber strip body 11 or multiple elastic rubber strip bodies 11 can be used. The elastic wire core wire 1 thus formed can be applied to self-retractable wires with different requirements. Alternatively, at least one elastic wire core wire 1 is wrapped in the conductive layer 2, and one elastic wire core wire 1 or multiple elastic wire core wires 1 can be used, so that the self-retractable wire meets different usage requirements and has a wider range of applications.

[0035] In this embodiment, the friction line 121 is nylon thread, cotton thread, fiber thread, spandex thread or latex thread. These types of friction lines 121 are woven on the outer surface of the elastic rubber strip body 11 to form an elastic friction layer 12, which has a greater friction coefficient with the conductive layer 2, further eliminating the peeling problem.

[0036] In this embodiment, the outer side of the wire 21 is painted with insulating paint, so that the wires 21 as a part of the conductive layer 2 can be insulated from each other, and different wires 21 can transmit different signals without crosstalk.

[0037] In this embodiment, the color of the insulating paint is provided with one or more colors. When only conducting electricity or transmitting one electrical signal is required, the same color can be used; when different electrical signals need to be transmitted, multiple colors can be used. It should be noted that the color of the insulating paint is determined when the wire 21 is manufactured, so it is necessary to select wires 21 of different colors to weave the conductive layer 2 according to actual use.

[0038] In this embodiment, the conductive wire 211 is a metal wire monofilament, a metal wire strand, an enameled wire, a metal-plated wire or a metal wire with a flexible outer sheath, and the pull wire 212 is a nylon wire, a cotton wire or a fiber wire, and the conductive wire 211 and the pull wire 212 are twisted to form a strand. The conductive wire 211 and the pull wire 212 are twisted to form a strand, so that the tensile strength of the wire 21 is greatly improved, and the wire 21 is not easy to break when the conductive layer 2 is repeatedly stretched and bent, which greatly improves the service life.

[0039] The present embodiment provides an autonomously retractable wire, which is a type of braided elastic wire 21, and therefore does not have the disadvantages of the spiral elastic wire 21, such as limited usage scenarios and poor aesthetics. It is a braided elastic wire 21, which has a thicker outermost insulating layer and therefore has a better elongation ratio. An elastic friction layer 12 is provided, which increases the friction of the conductive layer 2 without affecting the elastic elongation, thereby solving the problem of peeling.

[0040] In the laboratory circuit installation, the self-retractable wires can be configured according to the designed length series to form a "standardized" series, which constitutes a "standard part" that can be installed and removed, which is particularly convenient to use. The use of self-retractable wires and various connectors in household appliances can make the wiring of each appliance simple and neat, avoiding a mess that takes up space and is unsafe.

[0041] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0046] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A self-retractable wire, characterized in that: It comprises an elastic wire core and a conductive layer; the elastic wire core comprises an elastic rubber strip body and an elastic friction layer wrapped on the outer surface of the elastic rubber strip body, and the elastic friction layer is a spiral mesh structure woven from multiple strands of friction wires; the conductive layer is wrapped on the outer surface of the elastic wire core, and the conductive layer is a spiral mesh structure woven from multiple strands of conductive wires, and the conductive wires comprise conductive wires and pull wires.

2. The self-retractable wire according to claim 1, characterized in that: The elastic rubber strip body is a rubber strip with a circular or regular polygonal cross section.

3. The self-retractable wire according to claim 1, characterized in that: At least one elastic rubber strip body is wrapped in the elastic friction layer.

4. The self-retractable wire according to claim 1, characterized in that: At least one elastic wire core is wrapped in the conductive layer.

5. The self-retractable wire according to claim 1, characterized in that: The friction thread is nylon thread, cotton thread, fiber thread, spandex thread or latex thread.

6. The self-retractable wire according to claim 1, characterized in that: The outer side of the wire is painted with insulating paint.

7. The self-retractable wire according to claim 6, characterized in that: The insulating paint has one or more colors.

8. The self-retractable wire according to claim 1, characterized in that: The conductive wire is a metal wire monofilament, a metal wire strand, an enameled wire, a metal-plated wire or a metal wire with a flexible outer sheath.

9. The self-retractable wire according to claim 1, characterized in that: The pulling wire is nylon thread, cotton thread or fiber thread.

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