CN2842458Y - Rodent-proof soft optical cable - Google Patents

Abstract

A rat-proof soft optical cable is a cable with a tightly wrapped optical fiber in the inner core, and a reinforcing layer of aramid, nylon, polyester, glass fiber or other high-strength yarn parallel to the cable axis to enhance its axial tensile strength. The outer layer is made of steel, copper, or stainless steel metal strips rolled into an S-shaped metal strip with adjacent curling edges embedded in each other, and continuously wrapped in a spiral shape to form a corrugated metal strip sheath. A layer of polyvinyl chloride, polyethylene, polypropylene or polyurethane soft outer sheath is extruded outside the metal strip sheath. Its advantage is that the tightly wrapped optical fiber is protected in the continuously wrapped metal strip sheath, which enhances the optical cable's ability to withstand lateral pressure and damage, eliminates the possibility of the optical fiber being bitten off by animals such as mice, and ensures the normal and smooth operation of optical communication.

Description

Rodent-proof soft optical cable

Technical field

The utility model relates to an optical communication cable, in particular to an optical communication cable which is soft and can effectively prevent being bitten by mice, that is, a rat-biting soft optical cable.

Background technique

At present, most of the commonly used indoor optical cables are internally reinforced by one or several tightly wrapped optical fibers plus aramid yarn, and then extruded with a polyvinyl chloride sheath. Although this kind of optical cable is soft, easy to manufacture, and easy to bend and install, its disadvantage is that it does not have the anti-rat function. In the actual application process, it is often bitten off by animals such as mice, which affects the normal operation of optical fiber communication.

Contents of the invention

In order to overcome the defect that the existing soft optical cable is easily bitten off by mice and affect the normal operation of optical communication, the utility model provides a soft optical cable. Wait for the animal to bite off to ensure the reliable and normal operation of optical communication.

The technical scheme adopted by the utility model to solve the technical problem is: the tightly wrapped optical fiber is added with a yarn reinforcement layer parallel to the axial direction to enhance the axial tensile force; The layer can be made of steel, copper, stainless steel, and the cross section is S-shaped. For broken optical cables, a layer of soft outer sheath of polyvinyl chloride, polyethylene or polyurethane is extruded around the outer periphery of the metal tape sheath. The inner core of the soft optical cable mentioned above can be single or multiple. The yarns of the yarn reinforcing layer may be yarns with high tensile strength such as aramid, nylon, polyester or glass fiber.

The beneficial effect of the utility model is that because a layer of wrapping metal belt sheath is added to the sheath, while maintaining the softness and bending of the soft optical cable, which is convenient for installation and construction, it also increases the resistance to lateral pressure and anti-smashing of the optical cable. The ability to damage the optical cable ensures that the possibility of being bitten by the mouse is eliminated. No matter how strong the teeth of the mouse are, it is absolutely impossible to bite through the metal tape sheath. Normal operation of optical communication.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a cross-sectional view of the utility model.

In Fig. 1, 1. tightly wrapped optical fiber, 2. reinforced yarn layer, 3. spirally wrapped corrugated metal tape sheath, 4. outer sheath.

Detailed ways

In Fig. 1, a yarn layer (2) parallel to the axial direction is applied on the outer periphery of the tightly-wrapped optical fiber (1), and a corrugated metal belt sheath (3) is wrapped continuously in a spiral shape on the outside, and the metal belt sheath is Layer (3) can be made of steel, copper, stainless steel S-shaped edged metal strips, adjacent curled edges are embedded in each other, and wrapped continuously in a spiral shape, and a layer of polyvinyl chloride, polyethylene or polyurethane is extruded on the outer periphery of the corrugated metal belt sheath Material outer sheath (4), the above-mentioned tight-packed optical fiber (1) can be single or multiple, and the above-mentioned yarns laid parallel to the axial direction of the optical fiber can be aramid fiber, nylon, polyester, glass fiber Such as high tensile strength yarns to enhance the axial tensile force of soft optical cables.

Claims (5)

1. An anti-rat-biting soft optical cable is composed of a tight-wrapped optical fiber inner core plus a reinforcing yarn layer, a spiral-wrapped corrugated metal belt sheath and an outer sheath, and is characterized in that a yarn parallel to the axial direction is applied outside the tight-wrapped optical fiber The wire reinforcement layer is continuously wrapped with a metal tape sheath. 2. The rodent-proof flexible optical cable according to claim 1, characterized in that the corrugated metal tape sheath wrapped around is made of steel, copper, stainless steel metal tape rolled into an S-shaped crimped metal tape in cross section Adjacent crimps are embedded with each other and wrapped continuously in a spiral shape. 3. The anti-rodent flexible optical cable according to claim 1, characterized in that a layer of soft outer sheath made of polyvinyl chloride, polyethylene, or polyurethane is extruded on the outer periphery of the corrugated metal sheath . 4. The rodent-proof flexible optical cable according to claim 1, characterized in that the tight-packed optical fiber in the inner core of the flexible optical cable can be single or multiple. 5. The anti-rodent flexible optical cable according to claim 1, characterized in that the yarns of the yarn reinforcement layer can be yarns with high tensile strength such as aramid, nylon, polyester or glass fiber.

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