Cable junction box

Abstract

The utility model provides a cable junction box, which belongs to the field of photovoltaic technology and comprises a junction box body and a guide post assembly, the guide post assembly is arranged on one side of the junction box body, a through hole is arranged in the guide post assembly, and the guide post assembly corresponds to a mounting hole through the through hole. When some severe installation conditions that the junction box is too close to the wall end, the ground and other devices of a machine are installed, only a screwdriver and a screw need to be stretched into the through hole in the guide column after being fixed, the screw can be directly locked through the screwdriver, the positions of the screw and a screw hole do not need to be adjusted and found, and the installation efficiency is greatly improved. Therefore, the problem that the alignment screws cannot be seen when the wire box is too close to the wall end, the ground and other devices of the machine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic, and particularly relates to a cable junction box. Background Art

[0002] In recent years, with the rapid development of the photovoltaic energy storage industry, customers have higher and higher requirements for the overcurrent and energy storage capabilities of energy storage inverters. However, at present, there are few cable junction boxes in the industry that can meet both IP66 and be compatible with currents of 80A - 200A. Most are limited by the installation of large-current cables and safety regulations gaps, resulting in relatively large overall dimensions, inconvenient installation, and high costs.

[0003] A cable junction box is an important device for connecting cables in electrical engineering, and it plays a crucial role in the power transmission and distribution system. Most of the cable junction boxes currently used in the industry have a small span of installed wire diameters and cannot meet the compatibility of large-span cables of 80A - 200A; moreover, there is no installation guiding component. When installing the junction box, in some relatively harsh installation conditions such as installing at the bottom of a battery cabinet, with the junction box being too close to the wall end, the ground, or other components of the machine, it is inconvenient to see the screw positions and align and lock them. Content of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that it is inconvenient to see the screw positions and align and lock them under some relatively harsh installation conditions such as the junction box being too close to the wall end, the ground, or other components of the machine in the prior art, so as to provide a cable junction box.

[0005] To solve the above problems, the utility model provides a cable junction box, including:

[0006] A junction box body with a wiring component arranged inside; one end of the junction box body is suitable for being fixed to a wall; the other end of the junction box body is suitable for a cable to enter the inside of the junction box body, and an abutting portion is formed at the end of the junction box body close to the wall; mounting holes are arranged on the abutting portion.

[0007] A guiding column assembly, having at least one; the guiding column assembly is arranged on one side of the junction box body; the guiding column is detachably connected to the junction box body; a through hole is arranged inside the guiding column assembly; the through hole is arranged corresponding to the mounting hole.

[0008] As a preferred solution, it further includes:

[0009] An injection molded nut, embedded and connected to the abutting portion; a through hole inside the injection molded nut forms the mounting hole.

[0010] A non-loosening screw, suitable for being connected to the injection molded nut.

[0011] As a preferred solution, a protrusion is formed on one side of the guide post assembly close to the junction box body; a groove is formed on the junction box body; the protrusion and the groove are adapted to be slidably connected.

[0012] As a preferred solution, the junction box body further includes:

[0013] A first sealing ring, arranged on one side of the abutting part close to the wall surface.

[0014] As a preferred solution, the wiring assembly includes:

[0015] A terminal block, fixedly connected to the wall body on one side; a conductive copper bar is arranged on the other side;

[0016] A wiring terminal, one end is adapted to be connected to the conductive copper bar, and the other end is adapted to be connected to a cable;

[0017] An insulating sleeve, sleeved on the outer surfaces of the wiring terminal and the cable.

[0018] As a preferred solution, the wiring assembly includes:

[0019] A second sealing ring, arranged on one side of the terminal block close to the wall body.

[0020] As a preferred solution, it further includes:

[0021] A joint assembly, connected to one end of the junction box body far from the wall surface; a through hole is formed inside the joint assembly; the through hole is adapted for the cable to pass through.

[0022] As a preferred solution, the joint assembly includes:

[0023] A joint body, one end is connected to one end of the junction box body far from the wall surface;

[0024] A bushing, arranged inside the joint body; the bushing is sleeved on the outer surface of the cable;

[0025] An installation nut, threadedly connected to the joint body.

[0026] As a preferred solution, the guide post assembly is integrally formed by injection molding.

[0027] As a preferred solution, there are four guide post assemblies, and the guide post assemblies are evenly arranged on the outer side of the junction box body.

[0028] The technical solution of the present utility model has the following advantages:

[0029] 1. A cable junction box provided by the present utility model includes a junction box body and a guide post assembly. The guide post assembly is arranged on one side of the junction box body, and a through hole is provided inside the guide post assembly. The through hole is correspondingly arranged with the installation hole. During the installation process, when there are some relatively harsh installation conditions such as the junction box being too close to the wall end, too close to the ground, or too close to other components of the machine, only need to insert a screwdriver and a screw into the through hole inside the guide post after fixation, and directly lock the screw with the screwdriver, without the need to adjust and find the position of the screw and the screw hole, thus solving the problem that it is impossible to see and align the screws when the junction box is too close to the wall end, too close to the ground, or too close to other components of the machine.

[0030] 2. A cable junction box provided by the present utility model is also provided with an injection molded nut and a non - dropping screw. Through the cooperation of the injection molded nut and the non - dropping screw, the problem that it is difficult to align the screw hole when the screw is locked can be avoided, and during the disassembly process, the screw will not fall off, which is convenient for secondary locking.

[0031] 3. For a cable junction box provided by the present utility model, a protrusion is formed on one side of the guide post assembly close to the junction box body; a groove is provided on the junction box body; the protrusion and the groove are suitable for sliding connection. By the form of the protrusion slidingly installed on the groove, there is no need to find the position of the screw and the screw hole, thus solving the problem that it is impossible to see and align the screws when the junction box is too close to the wall end, too close to the ground, or too close to other components of the machine.

[0032] 4. A cable junction box provided by the present utility model is also provided with a first sealing ring. By setting the first sealing ring, the sealing effect of the overall structure can be ensured to reach the waterproof level of IPX6, avoiding engineering hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic diagram of the overall structure of a cable junction box provided by the present utility model.

[0035] Figure 2 It is a schematic diagram of the guide post assembly of a cable junction box provided by the present utility model.

[0036] Figure 3 It is a schematic diagram of the wiring assembly of a cable junction box provided by the present utility model.

[0037] Figure 4 Schematic diagram of the non-loosening screw for a cable junction box provided by the present utility model.

[0038] Figure 5 Schematic diagram of the joint assembly for a cable junction box provided by the present utility model.

[0039] Explanation of reference numerals:

[0040] 1. Junction box body; 11. Abutting part; 12. Mounting hole; 13. Groove; 14. First sealing ring; 2. Guide post assembly; 21. Protrusion; 22. Through hole; 3. Injection molded nut; 4. Non-loosening screw; 5. Wiring assembly; 51. Terminal seat; 52. Wiring terminal; 53. Insulating sleeve; 54. Second sealing ring; 55. Conductive copper bar; 56. Wire locking stud; 57. Wire locking nut; 6. Joint assembly; 61. Joint body; 62. Bushing; 63. Mounting nut. Detailed implementation manners

[0041] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mount", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0045] Such asFigure 1 As shown in the figure, a cable junction box provided by the utility model includes a junction box body 1 and a guide post assembly 2. A wiring assembly 5 is arranged inside the junction box body 1. One end of the junction box body 1 is suitable for being fixed to a wall surface, and the other end of the junction box body 1 is suitable for a cable to enter the inside of the junction box body 1. An abutting portion 11 is formed at the end of the junction box body 1 close to the wall surface, and a mounting hole 12 is arranged on the abutting portion 11. At least one guide post assembly 2 is provided, and the guide post assembly 2 is arranged on one side of the junction box body 1; the guide post assembly 2 is detachably connected to the junction box body 1; a through hole 22 is arranged inside the guide post assembly 2; the through hole 22 is arranged corresponding to the mounting hole 12.

[0046] In this solution, the guide post assembly 2 is arranged on one side of the junction box body 1, and a through hole 22 is arranged inside the guide post assembly 2. Through the corresponding arrangement of the through hole 22 and the mounting hole 12, during the installation process, when there are some relatively harsh installation conditions such as the junction box being too close to the wall end, too close to the ground, or too close to other components of the machine, only need to insert a screwdriver and a screw into the through hole 22 inside the guide post after fixation, and directly lock the screw with the screwdriver, without the need to adjust and find the position of the screw and the screw hole, thus solving the problem that the screw cannot be seen and aligned when the junction box is too close to the wall end, too close to the ground, or too close to other components of the machine.

[0047] It should be noted that in this solution, the abutting portion 11 is specifically a plate-like structure extending along the wall surface direction of the junction box body 1. By setting the abutting portion 11, the contact area between the junction box body 1 and the wall surface can be increased, and it is convenient to connect the junction box body 1 to the wall surface by setting the abutting portion 11.

[0048] It should be noted that in this solution, the wall surface refers to a flat surface, which can specifically be a wall surface, a ground surface, or the surface of other machine parts.

[0049] As Figure 4 shown, further, it further includes an injection nut 3 and a non-loosening screw 4. The injection nut 3 is embedded and connected to the abutting portion 11. A through hole inside the injection nut 3 forms the mounting hole 12, and the non-loosening screw 4 is suitable for being connected to the injection nut 3. During actual use, the non-loosening screw 4 is always connected to the injection nut 3. Rotating the non-loosening screw 4 in a certain direction can realize the firm connection between the non-loosening screw 4 and the wall surface, and rotating in the reverse direction can realize the disassembly of the non-loosening screw 4 from the wall surface. By setting this, the problem that it is difficult to align the screw hole when locking the screw can be avoided, and during the disassembly process, the screw will not fall off, which is convenient for secondary locking.

[0050] As Figure 2As shown in the figure, further, a protrusion 21 is formed on one side of the guide post assembly 2 close to the junction box body 1, and a groove 13 is formed on the junction box body 1. The protrusion 21 and the groove 13 are adapted to be slidably connected. It should be noted that during the processing, the positions of the through hole 22 of the guide post assembly 2 and the mounting hole 12 are calculated in advance to ensure that the positions of the through hole 22 and the mounting hole 12 correspond to each other after the guide post assembly 2 is installed in cooperation with the junction box body 1 through the protrusion 21. It should be noted that by the form of sliding the protrusion 21 on the groove 13, there is no need to find the positions of the screws and screw holes, thus solving the problem that the alignment screws cannot be seen when the junction box is too close to the wall end, the ground, or other components of the machine.

[0051] It should be noted that in order to improve the assembly effect and stability of the protrusion 21 and the groove 13, the shape of the protrusion 21 can be designed to be wider at the top and narrower at the bottom. In this way, the protrusion 21 can only be assembled with the groove 13 by sliding, avoiding the guide post assembly 2 falling off the junction box body 1 during use.

[0052] Further, in order to improve the sealing performance of the connection between the guide post assembly 2 and the junction box body 1, a peripheral edge is provided at the end of the guide post assembly 2 close to the abutting portion 11. The peripheral edge extends towards the abutting portion 11 and presents a semi-enclosed shape. By providing the peripheral edge, the sealing performance of the connection between the guide post assembly 2 and the junction box body 1 can be further improved.

[0053] Further, a first sealing ring 14 is also provided. The first sealing ring 14 is provided on the side of the abutting portion 11 close to the wall surface. It should be noted that in this solution, the first sealing ring 14 is directly bonded to the side of the abutting portion 11 close to the wall surface. By providing the first sealing ring 14, the sealing effect of the overall structure can be ensured to reach the IPX6 waterproof level, avoiding engineering hazards caused by water leakage and other situations.

[0054] As Figure 3 shown in the figure, further, the wiring assembly 5 includes a terminal block 51, a wiring terminal 52, and an insulating sleeve 53; one side of the terminal block 51 is fixedly connected to the wall; the other side is provided with a conductive copper bar 55; one end of the wiring terminal 52 is adapted to be connected to the conductive copper bar 55, and the other end is adapted to be connected to a cable; the insulating sleeve 53 is sleeved on the outer surfaces of the wiring terminal 52 and the cable. During actual use, the cable passes through the junction box body 1 and is connected to the wiring assembly 5. Specifically, the copper wire inside the cable is directly connected to the wiring terminal 52, and then one end of the wiring terminal 52 is fixed to the conductive copper bar 55.

[0055] It should be noted that during the wiring process, the cable is generally stripped first and then connected to the terminal 52. Subsequently, in order to prevent electric leakage, an insulating sleeve 53 is sleeved on the outside of the connection between the cable and the terminal 52. Then, the terminal 52 is fixed to the terminal block 51. It should be noted that in this solution, one end of the terminal 52 is connected to the conductive copper bar 55. Specifically, the terminal 52 is fixedly connected to the conductive copper bar 55 by means of the cooperation of a wire-locking stud 56 and a wire-locking nut 57.

[0056] It should be noted that in this solution, the side of the terminal block 51 close to the conductive copper bar 55 is designed as a two-layer structure with two on the upper layer and three on the lower layer, and specifically, five copper wires can be connected. Others can also change the specific structure of the terminal block 51 according to the requirements of the copper wires.

[0057] Furthermore, a second sealing ring 54 is also provided, which is arranged on the side of the terminal block 51 close to the wall; by providing the second sealing ring 54, the sealing performance of the overall structure is further enhanced. Specifically, the second sealing ring 54 is connected to the terminal block 51 by means of bonding.

[0058] Furthermore, a joint assembly 6 is also provided, and the joint assembly 6 is connected to the end of the junction box body 1 away from the wall surface; a through hole is formed inside the joint assembly 6; the through hole is suitable for the cable to pass through. By providing the joint assembly 6, the sealing performance of the overall structure can be further enhanced.

[0059] As Figure 5 shown, furthermore, the joint assembly 6 includes a joint body 61, a bushing 62 and a mounting nut 63. One end of the joint body 61 is connected to the end of the junction box body 1 away from the wall surface; the bushing 62 is arranged inside the joint body 61; the bushing 62 is sleeved on the outer surface of the cable; the mounting nut 63 is threadedly connected to the joint body 61. During the installation process, the cable is passed through the joint body 61, then the bushing 62 is sleeved on the outside of the cable, and then the cable is fixed by the mounting nut 63; it should be noted that the size of the bushing 62 needs to correspond to the thickness of the cable. In this solution, the size of the bushing 62 needs to meet the thickness size range of the 80A - 200A cable.

[0060] It should be noted that holes suitable for the cable to pass through are provided in the centers of the joint body 61, the bushing 62 and the mounting nut 63.

[0061] It should be noted that the mounting nut 63 reaches the IPX6 waterproof level through threaded engagement with the joint body 61.

[0062] Furthermore, the guide post assembly 2 is integrally formed by injection molding.

[0063] Further, the components of the guiding group can be reasonably increased or decreased according to the specific size of the junction box body 1. In this solution, there are four guiding column components 2, and the guiding column components 2 are evenly arranged on the outer side of the junction box body 1.

[0064] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. The obvious changes or alterations derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A cable junction box, characterized in that, Comprising: A junction box body (1) with a wiring component (5) disposed inside; one end of the junction box body (1) is adapted to be fixed to a wall surface; the other end of the junction box body (1) is adapted for a cable to enter the interior of the junction box body (1), and an abutting portion (11) is formed at the end of the junction box body (1) close to the wall surface; mounting holes (12) are provided on the abutting portion (11). A guiding post assembly (2), having at least one; the guiding post assembly (2) is disposed on the outer side of the junction box body (1); a through hole (22) is provided inside the guiding post assembly (2); the through hole (22) is correspondingly disposed with the mounting hole (12).

2. The cable junction box according to claim 1, characterized in that, Further comprising: An injection molded nut (3), embedded and connected with the abutting portion (11); the through hole inside the injection molded nut (3) forms the mounting hole (12). A non-loosening screw (4), adapted to be connected with the injection molded nut (3).

3. The cable connection box according to claim 1, characterized in that, The guiding post assembly (2) is detachably connected with the junction box body (1); a protrusion (21) is formed on the side of the guiding post assembly (2) close to the junction box body (1); a groove (13) is provided on the junction box body (1); the protrusion (21) and the groove (13) are adapted for sliding connection.

4. The cable junction box according to claim 1, characterized in that, The junction box body (1) further comprises: A first sealing ring (14), disposed on the side of the abutting portion (11) close to the wall surface.

5. The cable junction box according to claim 1, characterized in that, The wiring component (5) comprises: A terminal block (51), fixed to a wall body on one side; a conductive copper bar (55) is provided on the other side. A wiring terminal (52), one end is adapted to be connected with the conductive copper bar (55), and the other end is adapted to be connected with a cable. An insulating sleeve (53), sleeved on the outer surfaces of the wiring terminal (52) and the cable.

6. The cable junction box according to claim 5, characterized in that, The wiring component (5) comprises: A second sealing ring (54), disposed on the side of the terminal block (51) close to the wall body.

7. The cable junction box according to claim 1, characterized in that, Further comprising: A joint component (6), connected to the end of the junction box body (1) away from the wall surface; a through hole is formed inside the joint component (6); the through hole is adapted for a cable to pass through.

8. The cable junction box according to claim 7, characterized in that, The joint component (6) comprises: A joint body (61), one end is connected to the end of the junction box body (1) away from the wall surface. A bushing (62), disposed inside the joint body (61); the bushing (62) is sleeved on the outer surface of the cable. A mounting nut (63), threadedly connected with the joint body (61).

9. The cable junction box according to claim 1, characterized in that, The guiding post assembly (2) is integrally formed by injection molding.

10. The cable junction box according to claim 1, characterized in that, There are four guiding post assemblies (2), and the guiding post assemblies (2) are evenly disposed on the outer side of the junction box body (1).

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