Durable wiring cable for photovoltaic inverter

Abstract

The utility model provides a durable wiring cable for a photovoltaic inverter. The durable wiring cable comprises a power connection plug, a power connection cable and an adapter connector. The power connection plug is electrically connected to the adapter connector through a power connection cable, and the joint of the power connection plug and the power connection cable is coated with a rubber coating shell. The durable wiring cable for the photovoltaic inverter further comprises a nylon rubber coating shell. The nylon rubber coating shell is formed on the adapter connector in a plastic coating mode, and the nylon rubber coating shell extends to the end portion of the power connection cable adjacent to the adapter connector in an injection molding mode. The nylon rubber-coated shell made of the nylon material can play better extremely cold-resistant, high-temperature-resistant, ultraviolet-proof and flame-retardant effects, that is, the anti-aging performance of the nylon rubber-coated shell is effectively improved, so that the service life of the nylon rubber-coated shell can be prolonged. And meanwhile, the nylon rubber coating shell extends to the end part of the power connection cable adjacent to the adapter connector through injection molding, so that the bending flexibility of the joint of the end part of the rubber power connection cable and the adapter connector can be effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wiring cables, and in particular to a durable wiring cable for a photovoltaic inverter. Background Art

[0002] Wiring cables are a type of electrical connection wire commonly used in the field of photovoltaic technology. For example, the power output end of a photovoltaic inverter needs to be electrically connected to an adapter at one end of a wiring cable, and the plug at the other end of the wiring cable is electrically connected to the power input end of a household power grid, so that solar energy can be converted into household electricity for use.

[0003] Since photovoltaic inverters usually need to be installed outdoors, the wiring cables need to be installed outdoors in order to be used with photovoltaic inverters. However, traditional wiring cables are made of rubber, such as Chinese patent document CN203192443U, and the adapter is made of PVC material, which makes the PVC adapter prone to accelerated aging under the influence of long-term light and day and night temperature difference, that is, the PVC adapter has poor anti-aging performance. Moreover, during use, the wiring cables are bent frequently, which makes the connection between the rubber wiring cable and the PVC adapter prone to breakage. Utility Model Content

[0004] The purpose of the disclosure is to overcome the deficiencies in the prior art and provide a durable wiring cable for a photovoltaic inverter with better anti-aging performance and better bending toughness.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A durable wiring cable for a photovoltaic inverter includes a power plug, a power cable and an adapter connector. The power plug is electrically connected to the adapter connector through the power cable, and the connection between the power plug and the power cable is covered with a plastic shell. The durable wiring cable for a photovoltaic inverter also includes:

[0007] The nylon plastic-coated shell is plastic-coated on the adapter connector, and the nylon plastic-coated shell is injection-molded and extends to the end of the power cable adjacent to the adapter connector.

[0008] In one embodiment, the nylon rubber-coated shell includes a first rubber-coated portion, a gripping portion, and a second rubber-coated portion which are arranged in sequence, the first rubber-coated portion is overmolded on the power cable, both ends of the gripping portion extend and are overmolded on the first rubber-coated portion and the second rubber-coated portion, the second rubber-coated portion is overmolded on the adapter connector, and the gripping portion is provided with a group of anti-slip grooves.

[0009] In one embodiment, the first rubber-coated portion, the gripping portion, and the second rubber-coated portion are an integral injection-molded structure.

[0010] In one embodiment, the anti-slip groove set is also provided on the first rubber-coated portion.

[0011] In one embodiment, the cross section of the second rubber-covered portion is trapezoidal.

[0012] In one embodiment, the diameter of the first rubber-coated portion and the minimum diameter of the second rubber-coated portion are both smaller than the diameter of the gripping portion, and the diameter of the gripping portion is smaller than the maximum diameter of the second rubber-coated portion.

[0013] In one embodiment, a hanging hook is protrudingly provided on the surface of the second rubber-coated portion.

[0014] In one of the embodiments, the durable connection cable for the photovoltaic inverter further includes an iron core tie, and the iron core tie is used to be wrapped around the curved and overlapping parts of the connection cable during transportation.

[0015] In one of the embodiments, the durable wiring cable for the photovoltaic inverter also includes a locking nut, which is sleeved on the end of the adapter connector facing away from the power connection cable, and the outer peripheral wall of the adapter connector is convexly provided with an anti-slip limit ring, which abuts against the end of the locking nut facing away from the second rubber-coated portion.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] Since the nylon rubber-coated shell is overmolded on the adapter connector, and the nylon rubber-coated shell injection molding extends to the end of the power cable adjacent to the adapter connector, the durable wiring cable for the photovoltaic inverter has good insulation and corrosion resistance. At the same time, its high and low temperature resistance, flame retardant effect and good flexibility make the wiring cable have good resistance to extreme cold, high temperature, UV protection and flame retardant effects, that is, it effectively improves the anti-aging performance of the wiring cable, thereby extending the service life of the wiring cable. By overmolding the nylon rubber-coated shell on the adapter connector, and the nylon rubber-coated shell injection molding extends to the end of the power cable adjacent to the adapter connector, the bending flexibility of the connection between the end of the rubber power cable and the adapter connector can be effectively improved, thereby effectively avoiding the bending and easy breakage of the connection between the end of the rubber power cable and the adapter connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a durable wiring cable for a photovoltaic inverter according to an embodiment;

[0020] Figure 2 A schematic structural diagram of a durable wiring cable for a photovoltaic inverter according to another embodiment;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of a durable wiring cable for a photovoltaic inverter is shown;

[0022] Figure 4 for Figure 2 An end elevation view of an adapter connector for a durable wiring cable for a photovoltaic inverter is shown. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The present disclosure provides a durable wiring cable for a photovoltaic inverter, comprising a power plug, a power cable and an adapter connector, wherein the power plug is electrically connected to the adapter connector through the power cable, and a plastic shell is coated at the connection between the power plug and the power cable. The durable wiring cable for a photovoltaic inverter also includes:

[0027] A nylon plastic-coated shell is overmolded on the adapter connector, and the nylon plastic-coated shell is injection-molded and extends to the end of the power cable adjacent to the adapter connector.

[0028] See also Figures 1 to 4 In order to better understand the durable wiring cable 10 for the photovoltaic inverter of the present disclosure, the durable wiring cable 10 for the photovoltaic inverter is further explained below:

[0029] A durable wiring cable 10 for a photovoltaic inverter according to an embodiment includes a power plug 100, a power cable 200, and an adapter connector 300. The power plug 100 is electrically connected to the adapter connector 300 through the power cable 200, and a plastic shell 400 is coated at the connection between the power plug 100 and the power cable 200. The durable wiring cable 10 for a photovoltaic inverter also includes a nylon plastic shell 500. The nylon plastic shell 500 is overmolded on the adapter connector 300, and the nylon plastic shell 500 is injection molded and extends to the end of the power cable 200 adjacent to the adapter connector 300.

[0030] In this embodiment, since the nylon rubber-coated shell 500 is overmolded on the adapter connector 300, and the nylon rubber-coated shell 500 is injection-molded to extend to the end of the power cable 200 adjacent to the adapter connector 300, the durable wiring cable 10 for the photovoltaic inverter has good insulation and corrosion resistance. At the same time, its high and low temperature resistance, flame retardant effect and good flexibility make the wiring cable have good extreme cold resistance, high temperature resistance, UV protection and flame retardant effect, that is, the anti-aging performance of the wiring cable is effectively improved, thereby extending the service life of the wiring cable. By overmolding the nylon rubber-coated shell 500 on the adapter connector 300, and the nylon rubber-coated shell 500 is injection-molded to extend to the end of the power cable 200 adjacent to the adapter connector 300, the bending flexibility of the connection between the end of the rubber power cable 200 and the adapter connector 300 can be effectively improved, thereby effectively avoiding the bending and easy breakage of the connection between the end of the rubber power cable 200 and the adapter connector 300.

[0031] It should be noted that the power cable 200 is made of rubber material, and the nylon coated shell 500 is made of nylon material. Nylon material has good insulation and corrosion resistance, and the high and low temperature resistance, flame retardant effect and flexibility of nylon material are better than PVC material, and the contact between rubber material and nylon material has high adhesion and softness.

[0032] like Figure 2 and Figure 3 As shown, in one embodiment, the nylon rubber-coated shell 500 includes a first rubber-coated portion 510, a gripping portion 520 and a second rubber-coated portion 530 which are sequentially arranged, the first rubber-coated portion 510 is overmolded on the power connection cable 200, the two ends of the gripping portion 520 extend and are overmolded on the first rubber-coated portion 510 and the second rubber-coated portion 530, the second rubber-coated portion 530 is overmolded on the adapter connector 300, and the gripping portion 520 is provided with an anti-slip groove group 5201. It can be understood that since the nylon rubber-coated shell 500 is made of nylon material, and the first rubber-coated portion 510 is overmolded on the end of the power connection cable 200, the bending flexibility of the connection between the end of the power connection cable 200 and the adapter connector 300 can be effectively improved. Among them, the second rubber-coated portion 530 is plastic-molded on the adapter connector 300, and the two ends of the gripping portion 520 extend to cover the first rubber-coated portion 510 and the second rubber-coated portion 530. The user increases the friction of the grip by holding the anti-slip groove group 5201 of the gripping portion 520, so that the adapter connector 300 can be easily plugged and unplugged with the power output end of the photovoltaic inverter.

[0033] like Figure 3 As shown, in one embodiment, the first rubber-coated portion 510, the grip portion 520 and the second rubber-coated portion 530 are an integral injection molding structure. It can be understood that the first rubber-coated portion 510, the grip portion 520 and the second rubber-coated portion 530 are integrally injection molded, so the nylon rubber-coated shell 500 has good structural strength, and the integral injection molding is also conducive to the production and manufacturing of large quantities of nylon rubber-coated shells 500.

[0034] like Figure 3 As shown, in one embodiment, the anti-skid groove set 5201 is also provided on the first rubber-coated portion 510. It can be understood that the position where the first rubber-coated portion 510 is overmolded is located at the connection between the end of the power cable 200 and the adapter connector 300, and the anti-skid groove set 5201 is also provided on the first rubber-coated portion 510, so that the anti-skid groove set 5201 can not only improve the friction of the user's hand holding, but also play a role in reducing the bending stress concentration of the first rubber-coated portion 510, thereby effectively avoiding the connection between the end of the power cable 200 and the adapter connector 300 from bending and breaking.

[0035] like Figure 3 As shown, in one embodiment, the cross section of the second rubber-coated portion 530 is trapezoidal. In one embodiment, the diameter of the first rubber-coated portion 510 and the minimum diameter of the second rubber-coated portion 530 are both smaller than the diameter of the gripping portion 520, and the diameter of the gripping portion 520 is smaller than the maximum diameter of the second rubber-coated portion 530. It can be understood that since the adapter connector 300 and the power output end of the photovoltaic inverter require a higher connection strength to ensure the reliability of the connection, the outer contours of the first rubber-coated portion 510, the gripping portion 520 and the second rubber-coated portion 530 gradually increase with the diameter, so that the amount of nylon rubber molded in the area of ​​the second rubber-coated portion 530 that is molded in the adapter connector 300 is the largest, thereby effectively ensuring the structural strength and reliability of the connection between the adapter connector 300 and the power output end of the photovoltaic inverter.

[0036] like Figure 2 and Figure 3 As shown, in one embodiment, a hanging hook 5310 is also protruded from the surface of the second rubber-coated portion 530. In one embodiment, the durable wiring cable 10 for the photovoltaic inverter further includes an iron core tie 600, and the iron core tie 600 is used to be wound around the curved overlapping portion of the power connection cable 200 during transportation. It can be understood that the hanging hook 5310 and the iron core tie 600 facilitate the user to organize the messy and tangled durable wiring cable 10 for the photovoltaic inverter in an orderly manner and place it or use it for transportation.

[0037] like Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment, the durable wiring cable 10 for the photovoltaic inverter further includes a locking nut 700, which is sleeved on the end of the adapter connector 300 away from the power cable 200, and the outer peripheral wall of the adapter connector 300 is convexly provided with an anti-slip limit ring 310, and the anti-slip limit ring 310 abuts against the end of the locking nut 700 away from the second rubber-coated portion 530. It can be understood that the locking nut 700 is sleeved on the end of the adapter connector 300 away from the power cable 200, and when the adapter connector 300 is plugged into the power output end of the photovoltaic inverter, the adapter connector 300 is locked to the power output end of the photovoltaic inverter by the locking nut 700 to ensure the connection stability between the adapter connector 300 and the power output end of the photovoltaic inverter. The outer wall of the adapter connector 300 is convexly provided with an anti-slip limit ring 310, which abuts against the end of the locking nut 700 that is away from the second rubber-coated portion 530, so that when the durable wiring cable 10 for the photovoltaic inverter is idle, the locking nut 700 can also remain suspended on the end of the adapter connector 300 that is away from the power connection cable 200.

[0038] Compared with the prior art, the present invention has at least the following advantages:

[0039] Since the nylon rubber-coated shell is overmolded on the adapter connector, and the nylon rubber-coated shell injection molding extends to the end of the power cable adjacent to the adapter connector, the durable wiring cable for the photovoltaic inverter has good insulation and corrosion resistance. At the same time, its high and low temperature resistance, flame retardant effect and good flexibility make the wiring cable have good resistance to extreme cold, high temperature, UV protection and flame retardant effects, that is, it effectively improves the anti-aging performance of the wiring cable, thereby also extending the service life of the wiring cable. By overmolding the nylon rubber-coated shell on the adapter connector, and the nylon rubber-coated shell injection molding extends to the end of the power cable adjacent to the adapter connector, the bending flexibility of the connection between the end of the rubber power cable and the adapter connector can be effectively improved, thereby effectively avoiding the bending and easy breakage of the connection between the end of the rubber power cable and the adapter connector.

[0040] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A durable wiring cable for a photovoltaic inverter, comprising a power plug, a power cable and an adapter connector, wherein the power plug is electrically connected to the adapter connector through the power cable, and a connection between the power plug and the power cable is covered with a plastic shell, characterized in that: The durable wiring cable for the photovoltaic inverter also includes: A nylon plastic-coated shell is overmolded on the adapter connector, and the nylon plastic-coated shell is injection-molded and extends to the end of the power cable adjacent to the adapter connector.

2. The durable wiring cable for photovoltaic inverter according to claim 1, characterized in that: The nylon rubber-coated shell includes a first rubber-coated portion, a gripping portion and a second rubber-coated portion which are arranged in sequence. The first rubber-coated portion is overmolded on the power cable. Both ends of the gripping portion extend and are overmolded on the first rubber-coated portion and the second rubber-coated portion. The second rubber-coated portion is overmolded on the adapter connector. The gripping portion is provided with an anti-slip groove group.

3. The durable wiring cable for photovoltaic inverter according to claim 2, characterized in that: The first rubber-coated portion, the gripping portion and the second rubber-coated portion are an integral injection-molded structure.

4. The durable wiring cable for photovoltaic inverter according to claim 2, characterized in that: The anti-slip groove set is also arranged on the first rubber-coated portion.

5. The durable wiring cable for photovoltaic inverter according to claim 2, characterized in that: The cross section of the second rubber-covered portion is in a trapezoidal shape.

6. The durable wiring cable for photovoltaic inverter according to claim 2, characterized in that: The diameter of the first rubber-coated portion and the minimum diameter of the second rubber-coated portion are both smaller than the diameter of the holding portion, and the diameter of the holding portion is smaller than the maximum diameter of the second rubber-coated portion.

7. The durable wiring cable for a photovoltaic inverter according to claim 2, characterized in that: A hanging hook is also protrudingly provided on the surface of the second rubber-coated portion.

8. The durable wiring cable for a photovoltaic inverter according to claim 1, characterized in that: The durable connection cable for the photovoltaic inverter further comprises an iron core tie, which is used to be wound around the bent and overlapped parts of the connection cable during transportation.

9. The durable wiring cable for a photovoltaic inverter according to claim 2, characterized in that: The durable wiring cable for the photovoltaic inverter also includes a locking nut, which is sleeved on the end of the adapter connector facing away from the power connection cable. The outer peripheral wall of the adapter connector is convexly provided with an anti-slip limit ring, and the anti-slip limit ring abuts against the end of the locking nut facing away from the second rubber-coated part.

Images