Roof photovoltaic electrical connection box facilitating wiring operation

Abstract

The utility model relates to photovoltaic accessory technical field especially, more particularly to a roof photovoltaic electrical connection box convenient to wiring operation, including box body, two threading pipes of symmetry intercommunication in the front end of box body, the lock line screw cap of installation through screwing in the front end of threading pipe, the wiring hole of opening in the inside rear side of box body, the lid of installation through a plurality of fastening screws screwing in the upper end of box body, equidistance fixed in the inside of box body a plurality of electrode pieces and install in a plurality of electrode pieces between the bypass diode. In the utility model, through having carried out scientific rationalization improvement to the original photovoltaic electrical connection box, set up C type electricity buckle on the electrode piece, set up horizontal shift slide rail, horizontal shift lock block and outer stud between the box body and C type electricity buckle simultaneously, can realize the quick wiring processing of cable and electrode piece between exempt from to tear open lid, effectively reduced the workload and difficulty of cable actual wiring operation, thereby promoted the convenience and efficiency of cable wiring operation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic accessory technology, and in particular to a rooftop photovoltaic electrical connection box that facilitates wiring operations. Background Technology

[0002] A photovoltaic junction box is a connection device between a solar cell array and a charging control device. It is an essential supporting product for a solar photovoltaic power generation system. Although it accounts for less than 1% of the weight, it plays a role in line protection. Its main function is to conduct the current generated by the components and prevent hot spot effects. It integrates electrical design, mechanical design and materials science.

[0003] like Figure 4 As shown, this is the electrical junction box used in the previous generation of rooftop photovoltaic systems. Similar to conventional electrical junction boxes on the market, after the cable passes through the conduit, the outer sheath is locked to the conduit using a locking cap, while the conductor enters the wire clip on the electrode plate. The operator then uses a screwdriver to turn the screw inwards, locking the conductor to the end of the electrode plate. However, this type of electrical junction box has the following drawbacks in actual use: When wiring between the cable conductor and the electrode plate, the operator needs to first remove the box cover from the box body using tools, and then continue using tools to fix the cable conductor to the electrode plate. The entire wiring process requires the operator to use tools, increasing the workload and difficulty of the actual wiring operation and reducing the convenience and efficiency of cable wiring.

[0004] In view of this, it is particularly important to design and manufacture a photovoltaic electrical connection box that enables convenient cable wiring without removing the cover, and improves the convenience and efficiency of wiring operations. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the existing roof photovoltaic electrical connection box requires tools to be used for cable wiring operations, such as disassembling and assembling the box cover and fixing the cables, resulting in poor convenience and low efficiency in wiring operations. Therefore, a roof photovoltaic electrical connection box that facilitates wiring operations is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A rooftop photovoltaic electrical connection box for easy wiring includes a box body, two conduits symmetrically connected to the front end of the box body, a locking cap screwed onto the front end of the conduits, a wiring hole on the rear side inside the box body, a cover screwed onto the upper end of the box body by multiple fastening screws, multiple electrode plates equidistantly fixed inside the box body, and bypass diodes installed between the multiple electrode plates. A locking mechanism is provided between the left and right ends of the box body and the front end of the electrode plates for easy electrical connection of cables with the electrode plates without removing the cover.

[0007] As a further description of the above technical solution: The locking mechanism includes a C-shaped electrical connector fixed to the lower end of the electrode plate, a horizontal sliding rail fixed inside the box and facing the C-shaped electrical connector, a horizontal locking block movably installed between the horizontal sliding rail and the C-shaped electrical connector, a waist hole opened in the horizontal locking block and located outside the C-shaped electrical connector, a locking block fixed inside the waist hole and facing the opening end of the C-shaped electrical connector, and a rotary adjustment part disposed between the box and the horizontal locking block.

[0008] As a further description of the above technical solution: The adjusting part includes an inner recessed rotating seat integrally fixed to the left and right ends of the box body and facing the transverse locking block, an outer stud rotatably installed inside the inner recessed rotating seat and penetrating the transverse locking block, and an inner threaded hole opened on the transverse locking block and matching the outer stud.

[0009] As a further description of the above technical solution: The outer end of the external stud is fitted with a knob located inside the concave screw seat.

[0010] As a further description of the above technical solution: A limiting insert is fixedly connected to the external stud, penetrating the external stud and fitting against the inner wall of the concave screw seat. A limiting insertion hole for accommodating the limiting insert is provided on the external stud.

[0011] As a further description of the above technical solution: A viewing window is installed on the box cover above the horizontal sliding lock block.

[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 photovoltaic electrical connection box has been scientifically and rationally improved. A C-shaped electrical connector is set on the electrode plate, and a horizontal sliding rail, a horizontal locking block, and an external stud are set between the box body and the C-shaped electrical connector. Under normal conditions, the C-shaped electrical connector of the electrode plate abuts against the side wall of the waist hole of the horizontal locking block. At this time, the conductor part of the cable can be inserted into the space between the C-shaped electrical connector and the horizontal locking block through the conduit. When the knob on the external stud is held and rotated, the entire horizontal locking block can move in the direction of the C-shaped electrical connector within the horizontal sliding rail under the helical transmission action between the external stud and the internal thread hole. When the locking block in the waist hole of the horizontal locking block contacts and abuts against the conductor part of the cable, the conductor part of the cable is stably locked between the C-shaped electrical connector and the horizontal locking block. This structure enables quick wiring between the cable and the electrode plate without removing the cover, effectively reducing the workload and difficulty of the actual cable wiring operation, thereby improving the convenience and efficiency of the cable wiring operation. Attached Figure Description

[0013] Figure 1 This is a simplified structural diagram of a rooftop photovoltaic electrical connection box that facilitates wiring operations, as proposed in this utility model. Figure 2 This is a three-dimensional disassembly diagram of the present invention; Figure 3 This is a schematic diagram showing the internal disassembly of the box in this utility model; Figure 4 This is a schematic diagram of the structure of the previous generation of photovoltaic electrical connection box in the existing technology.

[0014] Legend: 1. Box body; 101. Conduit; 102. Wire locking cap; 103. Recessed screw seat; 104. Wiring hole; 105. Horizontal slide rail; 2. Box cover; 201. Fastening screw; 202. Viewing window; 3. Electrode plate; 301. C-type power connector; 4. Bypass diode; 5. Horizontal locking block; 501. Waist hole; 502. Wire locking block; 503. Internal threaded hole; 6. External stud; 601. Knob; 602. Limiting insertion hole; 7. Limiting insert. 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 1-4This utility model provides a technical solution: a rooftop photovoltaic electrical connection box that facilitates wiring operations, including a box body 1, two conduits 101 symmetrically connected to the front end of the box body 1, a locking cap 102 screwed onto the front end of the conduit 101, a wiring hole 104 opened inside the rear side of the box body 1, a cover 2 screwed onto the upper end of the box body 1 by multiple fastening screws 201, multiple electrode plates 3 equidistantly fixed inside the box body 1, and bypass diodes 4 installed between the multiple electrode plates 3. A locking mechanism is provided between the left and right ends of the box body 1 and the front end of the electrode plates 3 for easy electrical connection between the cable and the electrode plates 3 without removing the cover.

[0017] Specifically, such as Figure 1-3 As shown, the wire locking mechanism includes a C-shaped electrical connector 301 fixed to the lower end of the electrode plate 3, a horizontal sliding rail 105 fixed inside the box 1 and facing the C-shaped electrical connector 301, a horizontal locking block 5 movably installed between the horizontal sliding rail 105 and the C-shaped electrical connector 301, a waist hole 501 opened in the horizontal locking block 5 and located outside the C-shaped electrical connector 301, a wire locking block 502 fixed inside the waist hole 501 and facing the opening end of the C-shaped electrical connector 301, and a rotary adjustment part disposed between the box 1 and the horizontal locking block 5.

[0018] The adjusting part includes an inner recessed rotating seat 103 integrally fixed to the left and right ends of the housing 1 and facing the transverse locking block 5, an outer stud 6 rotatably installed inside the inner recessed rotating seat 103 and passing through the transverse locking block 5, and an inner threaded hole 503 opened on the transverse locking block 5 and matching the outer stud 6.

[0019] Meanwhile, a knob 601 is installed on the outer end of the outer stud 6 on the inner side of the concave rotating seat 103, which facilitates the operator's grip and rotation adjustment of the outer stud 6. A limiting insert 7 is fixedly connected to the outer stud 6, which passes through the outer stud 6 and fits against the inner wall of the concave rotating seat 103. A limiting insertion hole 602 is opened on the outer stud 6 to accommodate the limiting insert 7. When the limiting insert 7 is inserted into the limiting insertion hole 602 of the outer stud 6, the lateral displacement of the outer stud 6 in the concave rotating seat 103 can be restricted, without affecting the normal rotation of the outer stud 6. This structure can convert the helical action between the outer stud 6 and the inner thread hole 503 into the horizontal sliding of the transverse locking block 5 on the transverse sliding rail 105 when the outer stud 6 is driven to rotate, thereby locking the cable conductor part between the C-type electrical connector 301 and the locking block 502.

[0020] Specifically, such as Figure 1-3 As shown, a viewing window 202 is installed on the cover 2 above the horizontal locking block 5, which facilitates the operator's observation of the cable wiring process. The operator can understand the position of the cable conductor in the box 1 and the cover 2 through the viewing window 202.

[0021] Working principle: When using this device, if cable routing is required, the operator first strips the conductor portion of the cable and then inserts the cable into the conduit 101. During this process, the operator can observe the position of the cable within the box 1 through the viewing window 202 on the cover 2. Once the conductor portion of the cable is inserted between the C-type connector 301 and the waist hole 501 of the horizontal locking block 5, the operator can grasp and rotate the knob 601 on the corresponding external stud 6. Under the helical transmission action between the external stud 6 and the internal threaded hole 503, The horizontal locking block 5 can gradually move towards the C-shaped electrical connector 301, and the locking block 502 in the waist hole 501 can gradually contact and abut against the conductor part of the cable, squeezing and fixing the conductor part of the cable to the inside of the C-shaped electrical connector 301. At this time, the cable can establish an electrical connection with the electrode plate 3, thus completing the quick wiring operation of the cable and the photovoltaic electrical connection box without removing the cover. Finally, the locking cap 102 is screwed into the conduit 101, which can lock and fix the cable in the conduit 101, preventing the cable from being accidentally pulled out of the conduit 101 and the electrode plate 3 under force.

[0022] 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 rooftop photovoltaic electrical junction box for easy wiring operations, comprising a box body (1), two conduits (101) symmetrically connected to the front end of the box body (1), a locking cap (102) screwed onto the front end of the conduits (101), a wiring hole (104) opened inside the rear side of the box body (1), a cover (2) screwed onto the upper end of the box body (1) by multiple fastening screws (201), multiple electrode plates (3) equidistantly fixed inside the box body (1), and bypass diodes (4) installed between the multiple electrode plates (3), characterized in that, A cable locking mechanism is provided between the left and right ends of the box (1) and the front end of the electrode plate (3) for easy electrical connection between the cable and the electrode plate (3) without removing the cover.

2. The rooftop photovoltaic electrical connection box for easy wiring operation according to claim 1, characterized in that, The locking mechanism includes a C-type electrical connector (301) fixed at the lower end of the electrode plate (3), a horizontal sliding rail (105) fixed inside the box (1) and facing the C-type electrical connector (301), a horizontal locking block (5) movably installed between the horizontal sliding rail (105) and the C-type electrical connector (301), a waist hole (501) opened on the horizontal locking block (5) and located outside the C-type electrical connector (301), a locking block (502) fixed inside the waist hole (501) and facing the opening end of the C-type electrical connector (301), and a rotary part disposed between the box (1) and the horizontal locking block (5).

3. The rooftop photovoltaic electrical connection box for easy wiring operation according to claim 2, characterized in that, The adjusting part includes an inner recessed rotating seat (103) integrally fixed to the left and right ends of the box body (1) and facing the transverse locking block (5), an outer stud (6) rotatably installed inside the inner recessed rotating seat (103) and penetrating the transverse locking block (5), and an inner threaded hole (503) opened on the transverse locking block (5) and matching the outer stud (6).

4. A rooftop photovoltaic electrical connection box for easy wiring operations according to claim 3, characterized in that, The outer end of the external stud (6) is located on the inner side of the concave screw seat (103) and a knob (601) is installed.

5. A rooftop photovoltaic electrical connection box for easy wiring operations according to claim 3, characterized in that, A limiting insert (7) is fixedly connected to the external stud (6) and fits against the inner wall of the concave screw seat (103). A limiting insertion hole (602) for accommodating the limiting insert (7) is provided on the external stud (6).

6. A rooftop photovoltaic electrical connection box for easy wiring operation according to claim 1, characterized in that, A viewing window (202) is installed on the cover (2) above the transverse locking block (5).

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