Photovoltaic connector with multiple waterproof structures

Abstract

The utility model discloses a photovoltaic connector with multiple waterproof structures, and belongs to the technical field of photovoltaic power generation accessories. Comprising a negative end shell, a positive end shell in butt joint with the negative end shell, a butt joint hole formed in the center of the end of the negative end shell, and an insertion column head fixedly connected to the end of the positive end shell and connected with the butt joint hole in an inserted mode. The clamping groove is formed in the edge of the end portion of the negative end shell, and the clamping jaw is fixedly connected to the edge of the end portion of the positive end shell and clamped with the clamping groove. Therefore, the second sealing rubber ring and the third sealing rubber ring are tightly attached to the annular groove and the annular boss respectively, the first sealing rubber ring is located in a good sealing environment, and the waterproof effect of the butt joint portion of the negative end shell and the positive end shell is improved through the multiple waterproof structures.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation accessories, and more specifically, to a photovoltaic connector with a multiple waterproof structure. Background Art

[0002] A photovoltaic connector is a key component for connecting various components within a photovoltaic power generation system, and is located between a solar cell array composed of solar cell modules and a solar charging control device. The function of the photovoltaic connector is to connect the electricity generated by the solar cells to an external circuit, thereby conducting the current generated by the solar cells.

[0003] Patent authorization number CN221226753U discloses a photovoltaic connector and a photovoltaic device. The photovoltaic connector includes a positive connector and a negative connector. The positive connector includes a positive connector body, a positive nut, a receiving end, a boss and a sealing ring. The receiving end is in the shape of an extension arm extending from the edge position of the positive connector body. The outer side of the receiving end is flush with the outer surface of the positive connector body. A boss and reverse teeth extending inward are formed on the inner side wall of the receiving end. The negative connector includes a negative connector body, a negative nut, an insertion end and a groove. The insertion end is in the shape of a column extending from the central position of the negative connector body. The outer side wall of the insertion end is lower than the outer surface of the negative connector body. A groove is formed on the outer side wall of the insertion end. The boss of the positive connector can be snapped into the groove of the negative connector, and the reverse teeth of the positive connector can be snapped into the gap between the insertion end of the negative connector and the negative connector body.

[0004] However, in the photovoltaic connector with patent authorization number CN221226753U, the connection part between the positive end and the negative end is sealed by a single sealing rubber ring. Since it is in contact with air for a long time and cannot be in an absolutely sealed environment, it is prone to aging, affecting the waterproof effect of the docking part between the positive end and the negative end, and there is still room for improvement. Therefore, we propose a photovoltaic connector with a multiple waterproof structure to solve the above problems. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a photovoltaic connector with a multiple waterproof structure. It docks through the annular boss and the annular groove, so that the second sealing rubber ring and the third sealing rubber ring are respectively tightly attached to the annular groove and the annular boss, thereby placing the first sealing rubber ring in a good sealing environment. Through this multiple waterproof structure, the waterproof effect of the docking part between the negative end housing and the positive end housing is improved.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] Photovoltaic connector with multiple waterproof structures, including a negative terminal housing, a positive terminal housing docked with the negative terminal housing, a docking hole opened at the center of the end of the negative terminal housing, a plugging head fixed to the end of the positive terminal housing and plugged into the docking hole, a clamping groove opened at the edge of the end of the negative terminal housing, and a claw fixed to the edge of the end of the positive terminal housing and engaged with the clamping groove. A first sealing rubber ring is embedded at the root of the plugging head, and the first sealing rubber ring is in close fit with the inner wall of the port of the docking hole;

[0008] An annular groove is opened between the port of the docking hole and the clamping groove. A flange is provided between the annular groove and the port part of the docking hole, and a second sealing rubber ring is embedded on the outer wall of the flange;

[0009] An annular boss docked with the annular groove is fixedly connected to the outside of the plugging head, and a third sealing rubber ring is embedded on the outer wall of the annular boss.

[0010] Further, guide grooves are symmetrically opened on one side of the clamping groove, and the opening depth of the guide grooves is greater than the opening depth of the annular groove.

[0011] Further, a guide post is integrally formed at the part of the positive terminal housing corresponding to the guide groove, and the guide post and the guide groove form an embedded structure.

[0012] Further, the outer diameter of the annular groove is adapted to the outer diameter of the annular boss, and the inner diameter of the annular boss is adapted to the inner diameter of the annular groove.

[0013] Further, the opening depth of the annular groove is adapted to the axial length of the annular boss.

[0014] Further, the second sealing rubber ring is in close fit with the inner vertical surface of the annular boss.

[0015] Further, the third sealing rubber ring is in close fit with the surface of the annular groove away from the second sealing rubber ring.

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] (1) In this solution, by completely embedding the plugging head into the docking hole, the first sealing rubber ring is in close fit with the inner wall of the port of the docking hole. At the same time, the annular boss and the annular groove are docked with each other, so that the second sealing rubber ring and the third sealing rubber ring are respectively in close fit with the annular groove and the annular boss. Furthermore, the first sealing rubber ring is in a good sealing environment, avoiding the rapid aging of the first sealing rubber ring. Through this multiple waterproof structure, the waterproof effect of the docking part between the negative terminal housing and the positive terminal housing is improved.

[0018] (2) In this solution, by docking the guide post with the guide groove, the annular groove and the annular boss are docked with each other, which is conducive to the precise docking between the annular groove and the annular boss, and is conducive to the assembly between the negative terminal housing and the positive terminal housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the negative terminal housing of the present utility model;

[0021] Figure 3 is a structural schematic diagram of the positive terminal housing of the present utility model;

[0022] Figure 4 is a structural schematic diagram of the plug-in contact head of the present utility model.

[0023] Description of the reference numerals in the drawings:

[0024] Negative terminal housing; 2. Positive terminal housing; 3. Docking hole; 4. Plug-in contact head; 5. Clamping groove; 6. Claw; 7. First sealing rubber ring; 8. Annular groove; 9. Second sealing rubber ring; 10. Annular boss; 11. Third sealing rubber ring; 12. Guide groove; 13. Guide post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0026] Please refer to Figures 1-4 , a photovoltaic connector with a multi-layer waterproof structure, including a negative terminal housing 1, a positive terminal housing 2 docked with the negative terminal housing 1, a docking hole 3 opened at the center of the end of the negative terminal housing 1, a plug-in contact head 4 fixedly connected to the end of the positive terminal housing 2 and inserted and connected with the docking hole 3, a clamping groove 5 opened at the edge of the end of the negative terminal housing 1, and a claw 6 fixedly connected to the edge part of the end of the positive terminal housing 2 and engaged with the clamping groove 5. A first sealing rubber ring 7 is embedded at the root of the plug-in contact head 4, and the first sealing rubber ring 7 is in close fit with the inner wall of the port of the docking hole 3;

[0027] An annular groove 8 is formed between the port of the docking hole 3 and the clamping groove 5. A flange is provided between the annular groove 8 and the port part of the docking hole 3, and a second sealing rubber ring 9 is inlaid on the outer wall of the flange.

[0028] An annular boss 10 that is docked with the annular groove 8 is fixedly connected to the outside of the plugging head 4, and a third sealing rubber ring 11 is inlaid on the outer wall of the annular boss 10.

[0029] It should be noted that when the photovoltaic connector with a multiple waterproof structure is in use, first, the clamping claws 6 are docked with the clamping groove 5, and then the plugging head 4 is inserted and connected with the docking hole 3 until the plugging head 4 is completely embedded in the docking hole 3. The first sealing rubber ring 7 is in close fit with the inner wall of the port of the docking hole 3. At the same time, the annular boss 10 is docked with the annular groove 8, so that the second sealing rubber ring 9 and the third sealing rubber ring 11 are respectively in close fit with the annular groove 8 and the annular boss 10, thereby placing the first sealing rubber ring 7 in a good sealing environment and preventing the first sealing rubber ring 7 from aging too quickly. Through this multiple waterproof structure, the waterproof effect of the docking part between the negative terminal housing 1 and the positive terminal housing 2 is improved.

[0030] As Figure 2 、 Figure 3 shown, guide grooves 12 are symmetrically formed on one side of the clamping groove 5, and the depth of the guide grooves 12 is greater than the depth of the annular groove 8. A guide post 13 is integrally formed at the part of the positive terminal housing 2 corresponding to the guide grooves 12, and the guide post 13 and the guide grooves 12 form an embedded structure.

[0031] It should be noted that by docking the guide post 13 with the guide grooves 12, the annular groove 8 and the annular boss 10 are docked with each other, which is beneficial to the accurate docking between the annular groove 8 and the annular boss 10 and is beneficial to the assembly between the negative terminal housing 1 and the positive terminal housing 2.

[0032] As Figure 2 、 Figure 3 shown, the outer diameter of the annular groove 8 is adapted to the outer diameter of the annular boss 10, the inner diameter of the annular boss 10 is adapted to the inner diameter of the annular groove 8, and the depth of the annular groove 8 is adapted to the axial length of the annular boss 10.

[0033] It should be noted that the annular boss 10 is completely embedded in the annular groove 8 to achieve the effect of multiple waterproofing.

[0034] As Figure 1 、 Figure 2 、 Figure 3 shown, the second sealing rubber ring 9 is in close fit with the inner surface of the annular boss 10, and the third sealing rubber ring 11 is in close fit with the surface of the annular groove 8 away from the second sealing rubber ring 9.

[0035] It should be noted that by closely fitting the second sealing rubber ring 9 and the third sealing rubber ring 11 with the annular groove 8 and the annular boss 10 respectively, the first sealing rubber ring 7 is placed in a good sealing environment, avoiding the rapid aging of the first sealing rubber ring 7.

[0036] During use: First, the claw 6 is docked with the clamping groove 5, and then the plugging head 4 is plugged and connected with the docking hole 3 until the plugging head 4 is completely embedded in the docking hole 3. The first sealing rubber ring 7 is closely attached to the inner wall of the port of the docking hole 3. At the same time, the annular boss 10 is docked with the annular groove 8, so that the second sealing rubber ring 9 and the third sealing rubber ring 11 are respectively closely attached to the annular groove 8 and the annular boss 10.

[0037] The above is only the preferred specific implementation mode of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic connector with a multi-layer waterproof structure, comprising a negative terminal housing (1), a positive terminal housing (2) docked with the negative terminal housing (1), a docking hole (3) opened at the center of the end of the negative terminal housing (1), a plugging head (4) fixedly connected to the end of the positive terminal housing (2) and inserted and connected with the docking hole (3), a clamping groove (5) opened at the edge of the end of the negative terminal housing (1), and a claw (6) fixedly connected to the edge part of the end of the positive terminal housing (2) and engaged with the clamping groove (5), characterized in that: A first sealing rubber ring (7) is embedded at the root of the plugging head (4), and the first sealing rubber ring (7) is in close contact with the inner wall of the port of the docking hole (3); An annular groove (8) is formed between the port of the docking hole (3) and the clamping groove (5). A flange is provided between the annular groove (8) and the port part of the docking hole (3), and a second sealing rubber ring (9) is embedded on the outer wall of the flange; An annular boss (10) docked with the annular groove (8) is fixedly connected to the outside of the plugging head (4), and a third sealing rubber ring (11) is embedded on the outer wall of the annular boss (10).

2. The photovoltaic connector with a multi-layer waterproof structure according to claim 1, wherein: Guide grooves (12) are symmetrically formed on one side of the clamping groove (5), and the depth of the guide grooves (12) is greater than the depth of the annular groove (8).

3. The photovoltaic connector with a multiple waterproof structure according to claim 2, characterized in that: A guide post (13) is integrally formed at the part of the positive electrode housing (2) corresponding to the guide groove (12), and the guide post (13) and the guide groove (12) form an embedded structure.

4. The photovoltaic connector with a multiple waterproof structure according to claim 1, wherein: The outer diameter of the annular groove (8) is adapted to the outer diameter of the annular boss (10), and the inner diameter of the annular boss (10) is adapted to the inner diameter of the annular groove (8).

5. The photovoltaic connector with a multiple waterproof structure according to claim 1, characterized in that: The depth of the annular groove (8) is adapted to the axial length of the annular boss (10).

6. The photovoltaic connector with a multiple waterproof structure according to claim 1, wherein: The second sealing rubber ring (9) is in close contact with the inner surface of the annular boss (10).

7. The photovoltaic connector with a multi-layer waterproof structure according to claim 1, wherein: The third sealing rubber ring (11) is in close contact with the surface of the annular groove (8) away from the second sealing rubber ring (9).

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