Anti-aging insulating double-parallel power line

Abstract

The utility model discloses an anti-aging insulating double-parallel power line, belongs to the technical field of electrical appliances, and is used for providing an anti-aging insulating double-parallel power line which is less affected by bending, the anti-aging insulating double-parallel power line comprises a double-parallel wire core, the double-parallel wire core is divided into two parts, each part of the double-parallel wire core is wrapped by an inner insulating layer, each inner insulating layer is wrapped by a shielding layer, and the shielding layer is wrapped by an outer insulating layer. Each shielding layer is wrapped by an outer insulating layer, the two outer insulating layers are jointly wrapped by a bunching layer, and the bunching layer is sleeved with a wear-resistant layer. According to the utility model, the corrugated groove is arranged outside the wider side of the bunching layer serving as the protection layer of the power line, so that the power line is easier to be greatly bent, the corrugated groove absorbs bending deformation, the bending stress is smaller, the extrusion force on the inner side of the bunching layer serving as the protection layer is smaller, and the pulling force on the outer side of the bunching layer serving as the protection layer is smaller; and moreover, the stress transmitted to the tightly wrapped insulating layer is smaller, the probability of mechanical damage of the protective layer caused by bending of the power line is lower, and the service life of the power line is effectively prolonged.

Description

Technical Field

[0001] This application relates to the technical field of electrical appliances, and particularly to an anti-aging insulated double-parallel power cord. Background Art

[0002] A double-parallel power cord is a common power transmission line in life. It usually has two metal wire cores inside, and multiple insulating protective layers are wrapped outside the metal wire cores. When the power cord needs to be stored, it is usually bent. Due to the tight wrapping of the protective layer, the inner side of the bent part of the power cord will be subjected to additional extrusion force. At the same time, the outer side of the power cord will be subjected to a pulling force. It is possible that the inner side of the protective layer will produce wrinkles due to excessive extrusion, and the outer side will be difficult to recover due to excessive stretching and thinning. The protective layer will be damaged and strained due to bending, resulting in structural damage, and the anti-aging performance will naturally decrease. Summary of the Invention

[0003] The purpose of this application is to provide an anti-aging insulated double-parallel power cord that is less affected by bending.

[0004] To achieve the above purpose, this application provides an anti-aging insulated double-parallel power cord: including a double-parallel wire core, the double-parallel wire core is divided into two parts on average, each part of the double-parallel wire core is wrapped with an inner insulating layer, each inner insulating layer is wrapped with a shielding layer, each shielding layer is wrapped with an outer insulating layer, and the two outer insulating layers are jointly wrapped with a bundling layer. A wear-resistant layer is sleeved outside the bundling layer to directly contact and rub with the outside world instead of the bundling layer, effectively reducing the wear of the bundling layer.

[0005] As a preference, the inner wall of the bundling layer has a pair of dividing cones, and both of the dividing cones are located between the outer sides of the two outer insulating layers to limit the positions of the two outer insulating layers in the bundling layer.

[0006] As a preference, the outer side of the bundling layer is provided with corrugated grooves. There are several corrugated grooves, and several corrugated grooves are arranged at equal intervals along the length direction of the bundling layer, so that the material distribution of the bundling layer is uniform, and when bent at different positions, the stress conditions are roughly the same.

[0007] As a preference, all the corrugated grooves are divided into two groups, and the two groups of corrugated grooves are respectively aligned with the two dividing cones to reduce the material thickness outside the dividing cones.

[0008] As a preference, both the outer insulating layer and the inner insulating layer are made of polyethylene material, which has good insulation and waterproof properties, and at the same time has good elastic toughness and pressure resistance.

[0009] As a preference, the bundling layer is made of rubber material, which has good elasticity and is easy to recover after deformation.

[0010] As a preference, the wear-resistant layer is woven from nylon fibers, with a smooth surface and low friction.

[0011] As a preference, the double-parallel wire core is made of nickel-copper alloy material, having good strength, ductility, toughness and corrosion resistance.

[0012] Compared with the prior art, the beneficial effects of the present application are as follows:

[0013] (1) By providing a corrugated groove on the wider side of the wire bundle layer serving as the power cord protection layer, the power cord can be bent more easily in a large range, and the corrugated groove absorbs the bending deformation, making the bending stress smaller. This not only reduces the extrusion force on the inner side of the wire bundle layer serving as the protection layer and the pulling force on the outer side, but also reduces the stress transmitted to the tightly wrapped insulating layer. The probability of mechanical damage to the protection layer caused by bending of the power cord is lower, and the protection layer can age naturally, effectively extending the service life of the power cord.

[0014] (2) The design has a compact structure, reasonable layers, is easy to wind up and convenient to store, has good insulation performance, and the aging resistance performance is less affected by bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the hierarchical structure of the aging-resistant insulated double-parallel power cord.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the aging-resistant insulated double-parallel power cord after removing the wear-resistant layer.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the cooperation between the wear-resistant layer and the wire bundle layer of the aging-resistant insulated double-parallel power cord.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the wire bundle layer of the aging-resistant insulated double-parallel power cord.

[0019] Figure 5 It is a three-dimensional structural cross-sectional view of the configuration of the double-parallel wire core in the insulating layer of the aging-resistant insulated double-parallel power cord.

[0020] In the figure: 1, wear-resistant layer; 2, wire bundle layer; 201, separating cone; 202, corrugated groove; 3, outer insulating layer; 4, shielding layer; 5, inner insulating layer; 6, double-parallel wire core. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, in combination with the specific embodiments, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0022] In the description of the present application, it should be noted that for the orientation terms, such as the terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0024] The terms "comprising" and "having" in the description and claims of the present application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0025] As Figures 1-5 shown, the anti-aging insulation double-parallel power cord includes a double-parallel wire core 6 made of N05500 nickel-copper alloy material. The main components of N05500 nickel-copper alloy are nickel and copper, and elements such as aluminum and titanium are also added, which has good strength and corrosion resistance. Usually, the double-parallel wire core 6 is evenly divided into two parts. Moreover, in order to improve the torsional mobility of the power cord, each part of the double-parallel wire core 6 is composed of a plurality of thinner N05500 nickel-copper alloy wires closely arranged. Since the diameters of the N05500 nickel-copper alloy wires are generally standard and unified, the number of N05500 nickel-copper alloy wires in the two parts of the double-parallel wire core 6 is equal. An inner insulation layer 5 is wrapped outside each part of the double-parallel wire core 6. The inner insulation layer 5 is made of polyethylene material. A shielding layer 4 is wrapped outside each inner insulation layer 5. The shielding layer 4 is made of aluminum foil material. A dense oxide layer can be formed on the surface of the aluminum foil. Therefore, even if the aluminum foil is very thin, it has good antioxidant performance. An outer insulation layer 3 is wrapped outside each shielding layer 4. The outer insulation layer 3 is also made of polyethylene material, has good flexibility, and has good waterproof and insulation performance.

[0026] There is a wire bundling layer 2 wrapped around the two outer insulating layers 3. The wire bundling layer 2 is made of a rubber material with better elasticity. The inner wall of the wire bundling layer 2 has a pair of integral dividing cones 201. The dividing cones 201 make the inner cavity cross-section of the wire bundling layer 2 form an ∞ shape, similar to the two outer insulating layers 3 arranged side by side. Both dividing cones 201 are located between the outer sides of the two outer insulating layers 3 and are in close contact with the outer insulating layers 3, thus suppressing the relative movement of the outer insulating layers 3. The outer side of the wire bundling layer 2 is provided with corrugated grooves 202. In this way, when the wire bundling layer 2 is bent, the stress received at the bending part will be smaller. There are several corrugated grooves 202, and these corrugated grooves 202 are arranged at equal intervals along the length direction of the wire bundling layer 2. In this way, the material distribution of each part of the wire bundling layer 2 is roughly uniform, and when each part is bent, the stress conditions are also roughly the same. In fact, all the corrugated grooves 202 are divided into two groups, and the two groups of corrugated grooves 202 are respectively aligned with the two dividing cones 201. Since the side wall of the wire bundling layer 2 where the dividing cones 201 are located is thicker, the depth of the corrugated grooves 202 at the dividing cones 201 can be deeper, and the compressible range is larger. As long as it is bent along the corrugated grooves 202, even if the wire generates a large bend, the stress received by the side wall of the wire bundling layer 2 will be relatively small.

[0027] There is a wear-resistant layer 1 sleeved outside the wire bundling layer 2. The wear-resistant layer 1 is woven with nylon fibers, has a smooth surface, small frictional resistance, is not easy to wear, and has high durability.

[0028] Working principle: Since the double-parallel wire cores 6 inside the double-parallel wire are arranged side by side, after being wrapped by the wire bundling layer 2 and the wear-resistant layer 1, it is not cylindrical but relatively flat. When the wire is bent, the wider side of the wire has a smaller bending resistance. Most likely, it is the wider side of the wire that is bent. And the wire bundling layer 2 on the wider side of the wire has corrugated grooves 202, which can fully absorb the bending deformation, thereby reducing the inner extrusion stress and outer tensile stress increased by the insulation layer due to bending. The probability of the power cord protection layer being mechanically damaged is lower, effectively extending the natural aging time and making the service life of the power cord longer.

[0029] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. An anti-aging insulated double-parallel power cord, characterized in that: It includes a double-parallel wire core (6), the double-parallel wire core (6) is divided into two parts on average, each part of the double-parallel wire core (6) is wrapped with an inner insulating layer (5), each inner insulating layer (5) is wrapped with a shielding layer (4), each shielding layer (4) is wrapped with an outer insulating layer (3), the two outer insulating layers (3) are jointly wrapped with a bunching layer (2), and a wear-resistant layer (1) is sleeved outside the bunching layer (2).

2. The anti-aging insulated double-parallel power cord according to claim 1, characterized in that: The inner wall of the bunching layer (2) has a pair of separating cones (201), and the two separating cones (201) are both located between the outer sides of the two outer insulating layers (3).

3. The anti-aging insulated double-parallel power cord according to claim 2, characterized in that: The outer side of the bunching layer (2) is provided with corrugated grooves (202), there are several corrugated grooves (202), and the several corrugated grooves (202) are arranged at equal intervals along the length direction of the bunching layer (2).

4. The anti-aging insulated double-parallel power cord according to claim 3, characterized in that: All the corrugated grooves (202) are divided into two groups, and the two groups of corrugated grooves (202) are respectively aligned with the two separating cones (201).

5. The anti-aging insulated double-parallel power cord according to any one of claims 1 to 4, characterized in that: Both the outer insulating layer (3) and the inner insulating layer (5) are made of polyethylene material.

6. The anti-aging insulated double-parallel power cord according to claim 5, characterized in that: The bunching layer (2) is made of rubber material.

7. The anti-aging insulated double-parallel power cord according to claim 6, characterized in that: The wear-resistant layer (1) is woven from nylon fibers.

8. The anti-aging insulated double-parallel power cord according to claim 7, characterized in that: The double-parallel wire core (6) is made of nickel-copper alloy material.

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