Wiring waterproof structure of photovoltaic inverter

Abstract

The photovoltaic inverter wiring waterproof structure comprises a fixed frame and a fixed shell fixedly arranged on the lower surface of the fixed frame, a movable shell is arranged on the lower surface of the fixed frame and located on the side face of the fixed shell in a sliding mode, and a plurality of sets of threading holes are formed in the fixed shell and the movable shell in a penetrating mode; the fixed shell and the movable shell are each internally provided with a shielding assembly used for shielding and blocking the unused threading hole. A wire is clamped through the waterproof lower edge and the threading hole in the movable shell, the fixing frame, the fixed shell and the movable shell are matched to resist water for the wire, the corresponding movable columns on the two sides of the fixed shell and the movable shell are extruded to drive the corresponding blocking plates to move towards the inner side, and therefore the threading hole is shielded and blocked through the blocking plates; therefore, rainwater in the air is prevented from entering the fixed shell and the movable shell through the threading holes without wiring inside, and the situations of interface short circuit, burning and the like caused by the rainwater entering the fixed shell and the movable shell are further avoided.

Description

Technical Field

[0001] This utility model relates to the field of waterproof wiring technology, specifically a waterproof wiring structure for photovoltaic inverters. Background Technology

[0002] Photovoltaic inverters are key equipment in photovoltaic power generation systems, used to convert direct current (DC) generated by solar panels into alternating current (AC). When installing photovoltaic inverters outdoors, a waterproof structure is required to protect the wiring area of ​​the inverter from rainwater intrusion, which could lead to short circuits, burnout, or other damage. Currently, common waterproofing methods for photovoltaic inverters mainly involve using waterproof adhesive or waterproof sealant at the wiring ports. However, over time, this sealant is prone to cracking and peeling, resulting in a loss of waterproofing effectiveness. Furthermore, the sealant can hinder the removal and maintenance of wiring. Moreover, waterproof structures are often unsuitable for photovoltaic inverters with varying numbers of wiring connections. When the number of wiring connections is small, some wiring holes may not contain wiring, allowing airflow and potentially allowing moisture to enter the waterproof structure.

[0003] In the prior art, the authorized announcement number CN221102568U discloses a waterproof wiring structure for a photovoltaic inverter, including a photovoltaic inverter body and a wiring socket. The bottom of the photovoltaic inverter body is fixedly connected to a fixing plate and a protective frame. The bottom of the protective frame is bonded with a first waterproof pad. The protective frame is located between two fixing plates. The fixing plate has a guide groove inside.

[0004] The aforementioned patent is not applicable to photovoltaic inverters with varying numbers of wires. When there are fewer wires, some wiring holes do not contain wires, causing the wiring holes to be connected to the outside air, which may allow moisture in the air to enter the waterproof structure. Therefore, we need to propose a waterproof wiring structure for photovoltaic inverters. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof wiring structure for photovoltaic inverters. The wiring is clamped by the waterproof lower edge and the through hole inside the movable shell. The wiring is waterproofed by the cooperation of the fixed frame, fixed shell and movable shell. The corresponding movable columns on both sides of the fixed shell and movable shell are squeezed, which drives the corresponding blocking plates to move inward. The blocking plates block the through hole, thereby preventing rainwater in the air from entering the fixed shell and movable shell through the through hole without wiring inside, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof wiring structure for a photovoltaic inverter, comprising a fixed frame and a fixed shell fixedly disposed on the lower surface of the fixed frame, wherein a movable shell is slidably disposed on the lower surface of the fixed frame and on the side of the fixed shell, and both the fixed shell and the movable shell are provided with a plurality of through holes.

[0007] Both the fixed shell and the movable shell are equipped with shielding components to block unused wire holes.

[0008] The shielding assembly includes a blocking plate, a movable column, and a positioning module. Several sets of blocking plates and movable columns are provided. Several sets of blocking plates are slidably disposed inside the fixed shell and the movable shell, respectively, and several sets of movable columns are disposed outside the corresponding blocking plates.

[0009] Preferably, the positioning module includes a mounting plate and spring plungers. The mounting plate is provided in two sets, and the spring plungers are provided in several sets. The several sets of spring plungers are respectively installed on the outer arc surface of the corresponding moving column. The upper surface of both sets of mounting plates is provided with several sets of inner positioning holes and outer positioning holes corresponding to the spring plungers.

[0010] Preferably, both the fixed shell and the movable shell have several sets of movable grooves corresponding to the blocking plate inside, and the several sets of movable grooves are all connected to the corresponding wire holes.

[0011] Preferably, a plurality of sets of snap-fit ​​blocks are fixedly provided on the upper surface of the movable shell, and snap-fit ​​grooves corresponding to the plurality of sets of snap-fit ​​blocks are opened on the lower surface of the fixed frame. A lead screw is rotatably provided inside one set of the snap-fit ​​grooves, and the lead screw is threadedly connected to the corresponding snap-fit ​​block.

[0012] Preferably, several sets of bolts are provided on both sides of the fixing frame, and a first sealing gasket is provided on the upper surface of the fixing frame, and the upper surface of the first sealing gasket is provided with positioning holes corresponding to the several sets of bolts.

[0013] Preferably, both the fixed shell and the movable shell have waterproof lower edges fixedly connected to their lower surfaces, and the two sets of mounting plates are respectively disposed on opposite sides of the two sets of waterproof lower edges.

[0014] Preferably, the movable shell and the corresponding waterproof lower edge side are both fixedly provided with a second sealing gasket, and the fixed shell and the corresponding waterproof lower edge side are both provided with a sealing groove corresponding to the second sealing gasket.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention clamps the wiring through the waterproof lower edge and the wiring hole inside the movable shell. The fixed frame, fixed shell, and movable shell work together to waterproof the wiring. By squeezing the corresponding movable columns on both sides of the fixed shell and movable shell, the corresponding blocking plates move inward, thereby blocking the wiring hole. This prevents rainwater from entering the fixed shell and movable shell through the wiring hole, which is not connected to the wiring. This further prevents rainwater from entering the fixed shell and movable shell and causing short circuits or burnouts at the interface.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sealing structure of the fixed shell and the movable shell of this utility model;

[0019] Figure 2 This is a schematic diagram of the separation structure of the fixed shell and the movable shell of this utility model;

[0020] Figure 3 This is an exploded view of the overall structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the overall structure of this utility model.

[0022] In the diagram: 1. Fixed frame; 2. First sealing gasket; 3. Fixed shell; 4. Threading hole; 5. Blocking plate; 6. Waterproof lower edge; 7. Moving shell; 8. Mounting plate; 9. Moving column; 10. Spring plunger; 11. Inner positioning hole; 12. Extrusion ball; 13. Sealing groove; 14. Second sealing gasket; 15. Snap-fit ​​block; 16. Lead screw; 17. Moving groove; 18. Snap-fit ​​groove; 19. Outer positioning hole; 20. Positioning hole. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides: a waterproof wiring structure for a photovoltaic inverter, such as... Figure 1-4As shown, the device includes a fixed frame 1 and a fixed shell 3 fixedly disposed on the lower surface of the fixed frame 1. A movable shell 7 is slidably disposed on the lower surface of the fixed frame 1 and on the side of the fixed shell 3. Both the fixed shell 3 and the movable shell 7 have several sets of through holes 4. Several sets of bolts are provided on both sides of the fixed frame 1. A first sealing gasket 2 is provided on the upper surface of the fixed frame 1. The upper surface of the first sealing gasket 2 has positioning holes 20 corresponding to the several sets of bolts. The first sealing gasket 2 is sleeved on the outside of the bolts on the outside of the fixed frame 1 through the positioning holes 20, thereby preventing water leakage at the contact point between the fixed frame 1 and the inverter. Then, the fixed frame 1 is bolted to the bottom of the inverter, thereby facilitating the disassembly and assembly of the waterproof wiring structure and the inverter.

[0025] Preferably, both the fixed shell 3 and the movable shell 7 are equipped with blocking components to cover unused wire holes 4. The blocking components include blocking plates 5, movable columns 9, and positioning modules. Several sets of blocking plates 5 and movable columns 9 are provided, with each set slidingly disposed inside the fixed shell 3 and the movable shell 7. Several sets of movable columns 9 are disposed outside the corresponding blocking plates 5, and each movable column 9 has a compression ball 12 at its outer end, facilitating operation by staff. Each part is provided with several sets of movable slots 17 corresponding to the blocking plate 5, and the several sets of movable slots 17 are all connected to the corresponding wire holes 4. The movable column 9 slides through the fixed shell 3 and the movable shell 7. By operating the movable column 9, the blocking plate 5 is moved inside the movable slot 17, and the blocking plates 5 corresponding to the fixed shell 3 and the movable shell 7 come into contact with each other, so that the unused wire holes 4 are blocked by the two sets of blocking plates 5, thereby preventing rainwater in the air from entering the fixed shell 3 and the movable shell 7 through the wire holes 4 that are not connected inside.

[0026] It is worth noting that the positioning module includes a mounting plate 8 and a spring plunger 10. The mounting plate 8 is provided in two sets, and the spring plunger 10 is provided in several sets. The several sets of spring plungers 10 are respectively installed on the outer arc surface of the corresponding moving column 9. The upper surface of both sets of mounting plates 8 is provided with several sets of inner positioning holes 11 and outer positioning holes 19 corresponding to the spring plungers 10. The spring plunger 10 is located at the bottom of the outer side of the moving column 9. When the spring plunger 10 is inserted into the inner positioning hole 11, it just blocks the wire hole 4 through the blocking plate 5, thereby positioning the blocking plate 5 and preventing the blocking plate 5 from shifting and causing water vapor to seep in. When the spring plunger 10 is inserted into the outer positioning hole 19, the blocking plate 5 is completely retracted into the moving groove 17, thereby preventing the blocking plate 5 from affecting the wiring through the wire hole 4.

[0027] Furthermore, a number of sets of snap-fit ​​blocks 15 are fixedly provided on the upper surface of the movable shell 7, and snap-fit ​​grooves 18 corresponding to the sets of snap-fit ​​blocks 15 are opened on the lower surface of the fixed frame 1. A screw rod 16 is rotatably provided inside a set of snap-fit ​​grooves 18, and the screw rod 16 is threadedly connected to the corresponding snap-fit ​​block 15. The movable shell 7 moves by snapping the snap-fit ​​blocks 15 on the upper surface into the snap-fit ​​grooves 18, thereby ensuring that the movable shell 7 will not deviate while moving. The screw rod 16 rotates through the fixed frame 1, driving the screw rod 16 to rotate. The screw rod 16 then drives the snap-fit ​​blocks 15 to move through the threads, thereby driving the movable shell 7 to move along the lower part of the fixed frame 1, which facilitates the wiring through the wire hole 4, while ensuring that the movable shell 7 can move close to the fixed shell 3.

[0028] Furthermore, both the fixed shell 3 and the movable shell 7 have waterproof lower edges 6 fixedly connected to their lower surfaces, and two sets of mounting plates 8 are respectively set on the opposite sides of the two sets of waterproof lower edges 6; the movable shell 7 and the corresponding waterproof lower edge 6 are both fixedly provided with second sealing gaskets 14, and the fixed shell 3 and the corresponding waterproof lower edge 6 are both provided with sealing grooves 13 corresponding to the second sealing gaskets 14. The waterproof lower edges 6 further prevent rainwater from entering the interior of the fixed shell 3 and the movable shell 7, and the second sealing gaskets 14 on the sides of the movable shell 7 and the waterproof lower edge 6 are inserted into the sealing grooves 13 of the fixed shell 3 and the other set of waterproof lower edges 6, thereby ensuring the sealing performance after the fixed shell 3 and the movable shell 7 are connected.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof wiring structure for a photovoltaic inverter, characterized in that, Includes: a fixed frame (1) and a fixed shell (3) fixedly disposed on the lower surface of the fixed frame (1). A movable shell (7) is slidably disposed on the lower surface of the fixed frame (1) and on the side of the fixed shell (3). Both the fixed shell (3) and the movable shell (7) have several sets of through holes (4) through them. The fixed shell (3) and the movable shell (7) are both provided with a shielding component for blocking the unused threading hole (4); The shielding assembly includes a blocking plate (5), a movable column (9), and a positioning module. The blocking plate (5) and the movable column (9) are provided in several groups. The several groups of blocking plates (5) are slidably disposed inside the fixed shell (3) and the movable shell (7), respectively. The several groups of movable columns (9) are disposed outside the corresponding blocking plate (5).

2. The waterproof wiring structure for a photovoltaic inverter according to claim 1, characterized in that: The positioning module includes a mounting plate (8) and a spring plunger (10). The mounting plate (8) is provided in two sets, and the spring plunger (10) is provided in several sets. The several sets of spring plungers (10) are respectively installed on the outer arc surface of the corresponding moving column (9). The upper surface of the two sets of mounting plates (8) is provided with several sets of inner positioning holes (11) and outer positioning holes (19) corresponding to the spring plunger (10).

3. The waterproof wiring structure for a photovoltaic inverter according to claim 2, characterized in that: Both the fixed shell (3) and the movable shell (7) have several sets of movable slots (17) corresponding to the blocking plate (5) inside, and the several sets of movable slots (17) are connected to the corresponding wire holes (4).

4. The waterproof wiring structure for a photovoltaic inverter according to claim 3, characterized in that: The upper surface of the movable shell (7) is fixedly provided with several sets of snap-fit ​​blocks (15), and the lower surface of the fixed frame (1) is provided with snap-fit ​​grooves (18) corresponding to the several sets of snap-fit ​​blocks (15). A lead screw (16) is rotatably provided inside one set of the snap-fit ​​grooves (18), and the lead screw (16) is threadedly connected to the corresponding snap-fit ​​block (15).

5. The waterproof wiring structure for a photovoltaic inverter according to claim 1, characterized in that: The fixed frame (1) has several sets of bolts on both sides. The upper surface of the fixed frame (1) is provided with a first sealing gasket (2), and the upper surface of the first sealing gasket (2) is provided with positioning holes (20) corresponding to several sets of bolts.

6. The waterproof wiring structure for a photovoltaic inverter according to claim 2, characterized in that: The lower surfaces of the fixed shell (3) and the movable shell (7) are both fixedly connected with waterproof lower edges (6), and the two sets of mounting plates (8) are respectively set on opposite sides of the two sets of waterproof lower edges (6).

7. A waterproof wiring structure for a photovoltaic inverter according to claim 6, characterized in that: The movable shell (7) and the corresponding waterproof lower edge (6) are both fixedly provided with a second sealing gasket (14), and the fixed shell (3) and the corresponding waterproof lower edge (6) are both provided with a sealing groove (13) corresponding to the second sealing gasket (14).

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