A connector based on a photovoltaic solar panel

Abstract

The utility model relates to a kind of connector based on photovoltaic solar panel in the technical field of connector, including shell and the metal terminal being set to inside, shell includes split structure's connecting female shell and connecting male shell, metal terminal includes first contact terminal and second contact terminal, one end of first contact terminal and second contact terminal is bendable metal sheet part, the outer surface of metal sheet part is equipped with external thread structure, the tail end of connecting female shell and connecting male shell is all set up with mounting threaded hole, first contact terminal and second contact terminal form cylindrical structure by bending metal sheet part, first contact terminal and second contact terminal can be by the external thread structure of metal sheet part and mounting threaded hole carry out screwing fixed, this connecting structure has good locking structure, simultaneously, the structure of connecting female shell and connecting male shell is optimized, reduces fastening nut and other parts investment, not only reduce cost, but also improve the connection stability of connector.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector based on a photovoltaic solar panel. Background Technology

[0002] MC4 connectors are familiar to those in the photovoltaic industry; they have almost become synonymous with photovoltaic connectors. MC4 connectors can be found on crucial components of photovoltaic power generation, such as modules, combiner boxes, and inverters, playing a vital role in ensuring successful power plant connections.

[0003] The existing MC4 connector structure can be referenced. Figure 1 The structural diagram shows that existing MC4 connectors generally include a housing and internal metal terminals. The cable is clamped in the bending piece at one end of the metal terminal by wire strippers, and then inserted into the housing. Finally, the nut at the tail of the housing is rotated, causing the housing to retract inward. The retracted housing secures the metal terminal and the cable, thus achieving fixation.

[0004] However, the fastening structures of the aforementioned MC4 connectors all achieve fixation by increasing friction through shell contraction, lacking locking performance. Therefore, there is an urgent need to develop a connector based on photovoltaic solar panels to meet practical application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a connector based on a photovoltaic solar panel to address the aforementioned shortcomings.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A connector based on a photovoltaic solar panel includes a housing and metal terminals disposed inside. The housing includes a split female housing and a male housing. The metal terminals include a first contact terminal and a second contact terminal. One end of the first and second contact terminals is a bendable metal sheet. The outer surface of the metal sheet is provided with an external thread structure. The tail ends of both the female and male housings are provided with mounting threaded holes. The first and second contact terminals are formed into cylindrical structures by bending the metal sheet. The first and second contact terminals can be inserted into the interior of the female and male housings respectively. The first and second contact terminals can be screwed and fixed by the external thread structure of the metal sheet and the mounting threaded holes.

[0007] As a further embodiment of the above description, the end of the connecting shell away from the mounting threaded hole is provided with an outwardly protruding plug post. The plug post has a hollow structure and is conductive to the mounting threaded hole. The end of the first contact terminal away from the metal plate is embedded inside the plug post.

[0008] In the above description, as a further embodiment, the end of the connecting female shell away from the mounting threaded hole is provided with a plug-in through hole, and the plug-in through hole and the mounting threaded hole are connected. The end of the second contact terminal away from the metal plate extends to the center of the plug-in through hole. The connecting male shell extends into the plug-in through hole of the connecting female shell through the plug-in post, and the first contact terminal and the second contact terminal are electrically connected.

[0009] As a further embodiment of the above description, both the first contact terminal and the second contact terminal are hollow structures, the aperture of the first contact terminal is larger than the aperture of the second contact terminal, and the second contact terminal is inserted and fixed to the first contact terminal.

[0010] As a further embodiment of the above description, the connecting female shell and the connecting male shell are provided with a fastening structure at the ends away from the mounting threaded hole. The fastening structure includes a fixed pin and a fitting groove. The fixed pin and the first contact terminal are arranged parallel to each other on both sides of the connecting male shell. The fitting groove and the second contact terminals are arranged parallel to each other on both sides of the connecting female shell. The end of the fitting groove is provided with a limiting notch that opens outward. The end of the fixed pin is provided with a limiting wedge that matches the limiting notch. When the fixed pin is inserted and fixed into the fitting groove, a limiting structure is formed between the limiting wedge and the limiting notch.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: an external thread structure is provided on the metal sheet portion at the tail end of the first contact terminal and the second contact terminal. When the cable is clamped inside the metal sheet portion, the metal sheet portion is bent into a cylindrical structure that matches the mounting thread hole, so that the first contact terminal and the second contact terminal can be fixed to the connecting female shell and the connecting male shell respectively by threaded connection. This connection structure has a good locking structure. At the same time, the structure of the connecting female shell and the connecting male shell is optimized, reducing the investment in fastening nuts and other parts, which not only reduces costs, but also improves the connection stability of the connector. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the connector of a photovoltaic solar panel in the prior art; Figure 2 This is an exploded view of the structure of a connector based on a photovoltaic solar panel as described in this embodiment; Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 This is a schematic diagram of the structure of the first contact terminal in this embodiment; Figure 5 This is a schematic diagram of the second contact terminal in the unfolded state in this embodiment; Figure 6This is a schematic diagram of the second contact terminal in the bent state in this embodiment; Figure 7 This is a cross-sectional view of a connector based on a photovoltaic solar panel as described in this embodiment. In the diagram: 1-Connecting female shell, 11-Insertion through hole, 12-Matching groove, 13-Limiting notch, 2-Connecting male shell, 21-Insertion post, 22-Fixing pin, 221-Limiting wedge, 3-First contact terminal, 4-Second contact terminal, 5-Metal sheet, 6-Mounting threaded hole. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] For this embodiment, please refer to Figures 2-7 Specifically, a connector based on a photovoltaic solar panel includes a housing and internal metal terminals. The housing comprises a split-structure female connector 1 and a male connector 2. The metal terminals include a first contact terminal 3 and a second contact terminal 4, one end of which is a bendable metal sheet 5. Figure 6 As shown, the outer surface of the metal sheet 5 is provided with an external thread structure, and the tail ends of both the connecting female shell 1 and the connecting male shell 2 are provided with mounting thread holes 6. The first contact terminal 3 and the second contact terminal 4 are formed into a cylindrical structure by bending the metal sheet 5, as shown. Figure 4 and Figure 5 As shown, the first contact terminal 3 and the second contact terminal 4 can be inserted into the interior of the connecting female shell 1 and the connecting male shell 2 respectively. The first contact terminal 3 and the second contact terminal 4 can be screwed and fixed to the mounting threaded hole 6 through the external thread structure of the metal plate part 5.

[0015] External threaded structures are provided on the metal sheet portion 5 at the tail ends of the first contact terminal 3 and the second contact terminal 4. When the cable is clamped inside the metal sheet portion 5, the metal sheet portion 5 is bent into a cylindrical structure that matches the mounting threaded hole 6, so that the first contact terminal 3 and the second contact terminal 4 can be fixed to the connecting female shell 1 and the connecting male shell 2 respectively by threaded connection. This connection structure has a good locking structure. At the same time, the structure of the connecting female shell 1 and the connecting male shell 2 is optimized, reducing the investment in fastening nuts and other parts, which not only reduces costs, but also improves the connection stability of the connector.

[0016] Specifically, such as Figure 3 and Figure 7As shown, the male housing 2 has an outwardly protruding insertion post 21 at the end away from the mounting threaded hole 6. The insertion post 21 is hollow and is conductive to the mounting threaded hole 6. The end of the first contact terminal 3 away from the metal plate 5 is embedded inside the insertion post 21. The end of the female housing 1 away from the mounting threaded hole 6 has an insertion through hole 11, which is conductive to the mounting threaded hole 6. The end of the second contact terminal 4 away from the metal plate 5 extends to the center of the insertion through hole 11. The male housing 2 extends into the insertion through hole 11 of the female housing 1 through the insertion post 21. The first contact terminal 3 and the second contact terminal 4 are electrically connected. Both the first contact terminal 3 and the second contact terminal 4 are hollow. The diameter of the first contact terminal 3 is larger than the diameter of the second contact terminal 4. The second contact terminal 4 is inserted and fixed to the first contact terminal 3.

[0017] Specifically, such as Figure 3 As shown, the end of the connecting female shell 1 and the connecting male shell 2 away from the mounting threaded hole 6 is provided with a fastening structure. The fastening structure includes a fixing pin 22 and a fitting groove 12. The fixing pin 22 and the first contact terminal 3 are arranged parallel to each other on both sides of the connecting male shell 2. The fitting groove 12 and the second contact terminal 4 are arranged parallel to each other on both sides of the connecting female shell 1. The end of the fitting groove 12 is provided with a limiting notch 13 that opens outward. The end of the fixing pin 22 is provided with a limiting wedge 221 that matches the limiting notch 13. When the fixing pin 22 is inserted and fixed to the fitting groove 12, a limiting structure is formed between the limiting wedge 221 and the limiting notch 13.

[0018] An installation process for a connector based on a photovoltaic solar panel: First, the outer sheath of the external cable is stripped, and the cable is placed inside the metal plate 5. The metal plate 5 is bent into a cylindrical structure that matches the mounting threaded hole 6, and the cable can be fixed inside the metal plate 5. Then, the first contact terminal 3 or the second contact terminal 4 is inserted into the connecting female shell 1 or the connecting male shell 2 along one side of the mounting threaded hole 6, so that the metal plate 5 can be threadedly connected to the mounting threaded hole 6 to form a locking structure.

[0019] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A connector based on a photovoltaic solar panel, comprising a housing and metal terminals disposed inside, characterized in that: The housing includes a split-structure connecting female housing and a connecting male housing. The metal terminals include a first contact terminal and a second contact terminal. One end of the first contact terminal and the second contact terminal is a bendable metal sheet. The outer surface of the metal sheet is provided with an external thread structure. The tail ends of the connecting female housing and the connecting male housing are provided with mounting threaded holes. The first contact terminal and the second contact terminal are formed into a cylindrical structure by bending the metal sheet. The first contact terminal and the second contact terminal can be inserted into the interior of the connecting female housing and the connecting male housing, respectively. The first contact terminal and the second contact terminal can be screwed and fixed to the mounting threaded holes through the external thread structure of the metal sheet.

2. The connector based on a photovoltaic solar panel according to claim 1, characterized in that: The end of the connecting male shell away from the mounting threaded hole is provided with an outwardly protruding plug post. The plug post has a hollow structure and is conductive to the mounting threaded hole. The end of the first contact terminal away from the metal plate is embedded inside the plug post.

3. A connector based on a photovoltaic solar panel according to claim 2, characterized in that: The connecting female shell has a plug-in through hole at one end away from the mounting threaded hole. The plug-in through hole and the mounting threaded hole are connected. The second contact terminal extends to the center of the plug-in through hole at one end away from the metal plate. The connecting male shell extends into the plug-in through hole of the connecting female shell through the plug-in post. The first contact terminal and the second contact terminal are electrically connected.

4. A connector based on a photovoltaic solar panel according to claim 3, characterized in that: Both the first contact terminal and the second contact terminal are hollow structures. The aperture of the first contact terminal is larger than that of the second contact terminal. The second contact terminal is inserted and fixed to the first contact terminal.

5. A connector based on a photovoltaic solar panel according to any one of claims 1-4, characterized in that: The connecting female shell and the connecting male shell are provided with a fastening structure at the ends away from the mounting threaded hole. The fastening structure includes a fixed pin and a fitting groove. The fixed pin and the first contact terminal are arranged parallel to each other on both sides of the connecting male shell. The fitting groove and the second contact terminal are arranged parallel to each other on both sides of the connecting female shell. The end of the fitting groove is provided with a limiting notch that opens outward. The end of the fixed pin is provided with a limiting wedge that matches the limiting notch. When the fixed pin is inserted and fixed into the fitting groove, a limiting structure is formed between the limiting wedge and the limiting notch.

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