A modular solar power station cable junction box

Abstract

This utility model relates to the field of solar power station component technology, and more particularly to a modular solar power station cable connection box, including a housing, a detachable cover mounted on the upper part of the housing, multiple connectors equidistantly mounted inside the housing, and multiple cable connectors symmetrically arranged on the left and right sides of the housing facing the connectors. A quick-connect mechanism for establishing a tool-free circuit connection between the cable connectors and the left and right ends of the housing is provided. In this utility model, by scientifically and rationally improving the original connection box structure, a protrusion groove and a limiting ring are added to the housing. Simultaneously, anti-retraction protrusions, lower slide rails, limiting slide posts, and handles are provided on the cable connectors, enabling tool-free and convenient connection between the housing and the cable connectors. This effectively reduces the workload and difficulty of cable connection operations, thereby improving the convenience and efficiency of cable connection operations.

Description

Technical Field

[0001] This utility model relates to the field of solar power station component technology, and in particular to a modular solar power station cable junction box. Background Technology

[0002] A solar power plant is a facility that uses solar cell arrays, combiner boxes, DC distribution cabinets, grid-connected inverters, AC distribution cabinets, and step-up transformers to convert solar radiation into electrical energy. It is a clean and renewable energy source for the Earth.

[0003] like Figure 4 As shown, this is the junction box structure used for cable connections in the previous generation of solar power plants. Its main function is to facilitate centralized power connection of multiple cable groups, improve the neatness of cable layout in solar power plants, and facilitate the later inspection and maintenance of cable groups. However, this type of junction box has the following shortcomings in actual use: After the cable is fixed to the cable connector by the locking cap, when fixing the cable connector to the housing, the operator still needs to use tools to remove the housing cover, and then fix the inner end of the cable connector to the housing by screwing in the inner thread ring to realize the electrical connection between the cable and the connector. The entire cable connection operation process is labor-intensive and difficult, reducing the efficiency and convenience of cable connection operation.

[0004] In view of this, it is particularly important to design and manufacture a cable junction box that can realize tool-free quick power connection between cables and connectors, improve the efficiency and convenience of cable connection operations, and be applied in the cable connection process of solar power plants. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the operation of connecting cables in traditional solar power station cable junction boxes is cumbersome, requires operators to use tools, and has low efficiency and poor convenience. Therefore, a modular solar power station cable junction box is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A modular solar power station cable junction box includes a housing, a detachable cover mounted on the upper part of the housing, multiple connectors equidistantly mounted inside the housing, and multiple cable connectors symmetrically arranged on the left and right sides of the housing and facing the connectors. A quick-connect mechanism for establishing a tool-free circuit connection between the cable connectors and the left and right ends of the housing is provided between the cable connectors and the connectors.

[0007] As a further description of the above technical solution: The quick-installation mechanism includes a horizontal insertion block fixed to one end of the cable connector facing the housing, anti-retraction protrusions symmetrically fixed on the horizontal insertion block and capable of abutting against the inner wall of the housing, horizontal insertion holes opened at the left and right ends of the housing and corresponding to the shape of the horizontal insertion block, and protrusion grooves symmetrically opened at the front and rear ends of the horizontal insertion holes for the anti-retraction protrusions to slide into the inner side of the housing.

[0008] As a further description of the above technical solution: A limiting part is provided between the lower end of the cable connector and the housing to prevent the cable connector from deflecting in the horizontal insertion hole.

[0009] As a further description of the above technical solution: The limiting part includes a lower slide rail integrally fixed to the lower end of the cable connector, a limiting slide post laterally movably installed inside the lower slide rail, a handle fixed on the limiting slide post and located inside the lower slide rail, and limiting insert rings fixed on the left and right ends of the housing and facing the limiting slide post.

[0010] As a further description of the above technical solution: The limiting slide and the limiting ring are in a transitional fit.

[0011] As a further description of the above technical solution: The cable connector is integrally fixed to an external screw cylinder at one end away from the housing. A locking cap for fixing the cable inside the cable connector is screwed onto the outside of the external screw cylinder.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this invention, the original electrical junction box structure is scientifically and rationally improved by adding a protrusion groove and a limiting ring to the housing. Meanwhile, the cable connector is equipped with an anti-retraction protrusion, a lower slide rail, a limiting slide post, and a handle. By aligning the anti-retraction protrusion on the horizontal insertion block with the horizontal insertion hole and the protrusion groove, the cable connector can be inserted into the housing. Then, by rotating it 90° clockwise or counterclockwise, the anti-retraction protrusion will slide away from the protrusion groove and abut against the inner wall of the housing. Finally, the limiting slide post at the lower end of the cable connector is slid into the limiting ring on the housing, completing the quick and easy fixing operation between the cable connector and the housing. This structure enables tool-free and convenient electrical connection between the housing and the cable connector, effectively reducing the workload and difficulty of cable connection operations, thereby improving the convenience and efficiency of cable connection operations. Attached Figure Description

[0013] Figure 1 This is a simplified structural diagram of a modular solar power station cable junction box proposed in this utility model; Figure 2 This is a three-dimensional forward tilting schematic diagram of the present invention; Figure 3 This is a schematic diagram of the working process of this utility model; Figure 4 This is a schematic diagram of the cable junction box in the previous generation of solar power plants in the existing technology.

[0014] Legend: 1. Housing; 101. Housing cover; 102. Horizontal insertion hole; 103. Protrusion slide groove; 104. Limiting insertion ring; 2. Cable connector; 201. Horizontal insertion block; 202. Anti-reverse protrusion; 203. Outer screw; 204. Lower slide rail; 205. Limiting slide post; 206. Handle; 3. Locking nut; 4. Connector. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a modular solar power station cable junction box, including a housing 1, a cover 101 detachably installed on the upper end of the housing 1, a plurality of connectors 4 equidistantly installed inside the housing 1, and a plurality of cable connectors 2 symmetrically arranged on the left and right sides of the housing 1 and facing the connectors 4. A quick-connect mechanism for establishing a circuit connection between the cable connectors 2 and the left and right ends of the housing 1 is provided between the cable connectors 2 and the left and right ends of the housing 1.

[0017] Specifically, such as Figure 1-3 As shown, the quick-installation mechanism includes a horizontal insertion block 201 fixed to one end of the cable connector 2 facing the housing 1, anti-retraction protrusions 202 symmetrically fixed to the horizontal insertion block 201 and capable of abutting against the inner wall of the housing 1, horizontal insertion holes 102 opened at the left and right ends of the housing 1 and corresponding to the shape of the horizontal insertion block 201, and protrusion grooves 103 symmetrically opened at the front and rear ends of the horizontal insertion holes 102 for the anti-retraction protrusions 202 to slide into the inner side of the housing 1. When the horizontal insertion block 201 is inserted into the horizontal insertion hole 102 of the housing 1, the degree of freedom of the cable connector 2 in the Y-axis and Z-axis directions on the housing 1 can be restricted. When the anti-retraction protrusions 202 slide into the housing 1 through the protrusion grooves 103 and rotate to an alternating distribution, the degree of freedom of the cable connector 2 in the X-axis direction on the housing 1 can be restricted.

[0018] Specifically, such as Figure 1-3As shown, a limiting part is provided between the lower end of the cable connector 2 and the housing 1 to prevent the cable connector 2 from deflecting within the horizontal insertion hole 102. The limiting part includes a lower slide rail 204 integrally fixed to the lower end of the cable connector 2, a limiting slide post 205 laterally movably installed inside the lower slide rail 204, a handle 206 fixed on the limiting slide post 205 and located inside the lower slide rail 204, and a limiting insertion ring 104 fixed at the left and right ends of the housing 1 and facing the limiting slide post 205. When the limiting slide post 205... After being inserted into the limiting ring 104, the cable connector 2 is prevented from axially deflecting within the horizontal insertion hole 102, thereby reducing the rotation of the anti-retraction protrusion 202 away from the protrusion groove 103. The limiting slide post 205 and the limiting ring 104 are in transition fit, which allows the limiting slide post 205 to be stably inserted between the housing 1 and the limiting ring 104, improving the connection stability after the limiting slide post 205 is inserted into the limiting ring 104, and preventing the cable connector 2 from deflecting on the housing 1.

[0019] Specifically, such as Figure 1-3 As shown, an outer screw cylinder 203 is integrally fixedly connected to the end of the cable connector 2 away from the housing 1. A locking cap 3 for fixing the cable inside the cable connector 2 is screwed onto the outside of the outer screw cylinder 203. When the cable is inserted into the cable connector 2, the locking cap 3 is screwed into the outer screw cylinder 203. Under the locking force of the outer screw cylinder 203, the cable can be locked and fixed on the cable connector 2, realizing the locking operation between the cable and the cable connector 2.

[0020] Working principle: When connecting the cable to the junction box, the operator first inserts the cable into the cable connector 2, the horizontal insertion block 201, and the outer screw 203. Then, the locking cap 3 is screwed into the outer screw 203, locking the cable to the cable connector 2. Next, the operator holds the cable connector 2, aligning the horizontal insertion block 201 and the anti-retraction protrusion 202 with the horizontal insertion hole 102 and the protrusion groove 103 on the housing 1. The head of the horizontal insertion block 201 is then inserted into the housing 1. Finally, the cable connector 2 is rotated clockwise or counterclockwise by 9 seconds. 0°, so that the convex slide groove 103 and the anti-retraction convex 202 are distributed at 90°. At this time, the anti-retraction convex 202 can be locked on the housing 1. At the same time, the lower slide rail 204 can be rotated and adjusted to be below the cable connector 2. Finally, the operator holds and slides the handle 206 to move the limiting slide post 205 horizontally towards the housing 1. When the limiting slide post 205 is inserted into the limiting ring 104 on the housing 1, the cable connector 2 can be fixed on the housing 1. At this time, the cable on the cable connector 2 can be electrically connected to the connector 4 in the housing 1, thus completing the tool-free electrical connection operation between the cable and the junction box.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A modular solar power station cable junction box, comprising a housing (1), a cover (101) detachably mounted on the upper end of the housing (1), a plurality of connectors (4) equidistantly mounted inside the housing (1), and a plurality of cable connectors (2) symmetrically arranged on the left and right sides of the housing (1) and facing the connectors (4), characterized in that, A quick-connect mechanism for establishing a tool-free connection between the cable connector (2) and the left and right ends of the housing (1) is provided; The quick-installation mechanism includes a horizontal insertion block (201) fixed to the end of the cable connector (2) facing the housing (1), anti-retraction protrusions (202) symmetrically fixed on the horizontal insertion block (201) and able to abut against the inner wall of the housing (1), horizontal insertion holes (102) opened at the left and right ends of the housing (1) and corresponding to the shape of the horizontal insertion block (201), and protrusion grooves (103) symmetrically opened at the front and rear ends of the horizontal insertion hole (102) for the anti-retraction protrusions (202) to slide into the inner side of the housing (1).

2. The modular solar power station cable junction box according to claim 1, characterized in that, A limiting part is provided between the lower end of the cable connector (2) and the housing (1) to prevent the cable connector (2) from deflecting in the transverse insertion hole (102).

3. A modular solar power station cable junction box according to claim 2, characterized in that, The limiting part includes a lower slide rail (204) integrally fixed to the lower end of the cable connector (2), a limiting slide post (205) movably installed on the inner side of the lower slide rail (204), a handle (206) fixed on the limiting slide post (205) and located on the inner side of the lower slide rail (204), and a limiting insert ring (104) fixed on the left and right ends of the housing (1) and facing the limiting slide post (205).

4. A modular solar power station cable junction box according to claim 3, characterized in that, The limiting slide (205) and the limiting ring (104) are in a transitional fit.

5. A modular solar power station cable junction box according to claim 1, characterized in that, The cable connector (2) is integrally fixedly connected to an outer screw cylinder (203) at one end away from the housing (1). The outer screw cylinder (203) is screwed with a locking cap (3) for fixing the cable inside the cable connector (2) by thread engagement.

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