Inverter junction box

Abstract

The utility model discloses an inverter junction box which comprises an inverter junction box back shell, one side of the inverter junction box back shell is hinged with a panel through a hinge, the top of the inverter junction box back shell is provided with a top plate, and the bottom of the inverter junction box back shell is provided with a bottom plate. The inverter junction box back shell is internally provided with wiring terminals at the top of the bottom plate, the top of the bottom plate is provided with wrapping posts, the multiple wrapping posts are in one-to-one correspondence with the wiring terminals, the wrapping posts are provided with abutting assemblies, and one side of the inverter junction box back shell is provided with a threading sliding groove; the junction box is allowed to be opened from two directions through the double-opening design of the panel, a larger operation space is provided, so that the operation process is simplified, the wiring terminals are transversely arranged along the bottom plate, access and wiring operation of cables are facilitated, the cables are prevented from being excessively bent or wound in the junction box, the threading sliding grooves provide guide paths for the cables, and the service life of the junction box is prolonged. The cable can conveniently enter the junction box from the outside.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of junction box, concretely is inverter junction box. BACKGROUND

[0002] In the existing photovoltaic power generation system, the inverter junction box as the important component of connecting photovoltaic module and inverter, usually adopts the traditional square or rectangular box body design, these traditional design junction box has the following problems in installation, wiring and maintenance process:

[0003] The cover plate of the traditional junction box is usually opened on one side, which makes it difficult to operate when installing and wiring in a small space, and a large operating space is needed. Once the cable or terminal in the junction box needs to be checked or replaced, the traditional design often needs to open the cover plate completely, increasing the difficulty and time of maintenance. Due to the limited space inside the junction box, when multiple cables need to be connected, the layout and fixation of the cables become complex, which can easily cause cable confusion. SUMMARY

[0004] The utility model aims at providing inverter junction box to solve the problem raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: the inverter junction box, including inverter junction box back shell, the side of inverter junction box back shell is hinged with the panel through the hinge, the top of inverter junction box back shell is provided with the top plate, the bottom of inverter junction box back shell is provided with the bottom plate, the inside of inverter junction box back shell is located at the top of bottom plate and is provided with terminal, the top of bottom plate is provided with the winding post, a plurality of winding posts correspond to the terminal, the winding post is provided with the abutment assembly, and the side of inverter junction box back shell is provided with the threading sliding slot.

[0006] Preferably, the panel is double-opened, and the inverter junction box back shell is in a stepped box structure with high top and low bottom.

[0007] Preferably, one side of the panel is provided with a latch, and the other side of the panel is provided with an angle fastener, which is buckled between the latch and the angle fastener.

[0008] Preferably, the terminal is provided with a plurality of terminals, which are arranged along the transverse direction of the bottom plate, and the threading sliding slot is in a long slot structure.

[0009] Preferably, the abutment assembly includes a limiting ring, which is fixedly connected to the top of the winding post, a supporting spring is sleeved on the winding post, and an abutment ring is slidably sleeved on the winding post.

[0010] Preferably, the bottom of the abutment ring abuts against the winding body, and the supporting spring is located between the limiting ring and the abutment ring.

[0011] Preferably, the inner side of the inverter terminal box back shell is provided with support blocks on the upper and lower sides of the threading sliding groove, threaded holes are formed in the support blocks, adjusting screws are inserted into the support blocks, and the adjusting screws are connected with the threaded holes in an internal and external thread connection.

[0012] Preferably, end portions of the adjusting screws are rotationally provided with abutting blocks, and the end portions of the two abutting blocks form a fixed abutment.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The double-opening design of the panel allows the terminal box to be opened from two directions, so that a larger operation space can be provided when installing and maintaining, even in a narrow space, thereby simplifying the operation process, and the design solves the operation difficulty problem caused by the single-face opening of the traditional terminal box.

[0015] 2. The utility model arranges the terminal in the horizontal direction along the bottom plate, facilitates the access and wiring operation of the cable, and provides appropriate guidance and fixation for the cable through the one-to-one correspondence between the winding column and the terminal, so that the cable is prevented from being excessively bent or wound in the terminal box, the abutment assembly is formed by the limiting ring, the supporting spring and the abutment ring, and is used for fixing the cable, the supporting spring provides elastic force to make the abutment ring tightly contact the winding body, the cable is fixed, and the limiting ring limits the sliding range of the abutment ring.

[0016] 3. The utility model provides a guide path for the cable through the threading sliding groove, facilitates the entry of the cable from the outside into the terminal box, and allows the user to adjust the fixing position according to the number and diameter of the cable through the design of the support block and the adjusting screw, and the abutting block is used for fixing the cable and preventing the cable from moving in the terminal box. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structure schematic view of the inverter terminal box of the utility model.

[0018] Fig. 2 It is a structure schematic view of the inside of the back shell of the inverter terminal box of the utility model.

[0019] Fig. 3 It is a structure schematic view of the terminal fixing assembly of the utility model.

[0020] Fig. 4 It is a structure schematic view of the abutment assembly of the utility model.

[0021] In the drawing: the inverter terminal box back shell 1; the panel 2; the angle fastener 21; the bolt buckle 3; the top plate 4; the bottom plate 5; the terminal 6; the winding column 7; the limiting ring 71; the supporting spring 72; the abutment ring 73; the threading sliding groove 8; the support block 81; the adjusting screw 82; the threaded hole 83; and the abutting block 84. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figs. 1 to 4 The utility model provides a technical scheme: inverter junction box, including inverter junction box back shell 1, one side of inverter junction box back shell 1 is hinged with panel 2 through hinge, panel 2 is double open setting, and the double open design junction box of panel 2 can be opened from two directions, provides greater operating space, facilitates installation and maintenance, inverter junction box back shell 1 is the stepped box structure of high low, and panel 2 is used to close back shell 1, protects internal wiring terminal and cable from the influence of external environment.

[0024] One side of panel 2 is provided with latch 3, and the other side of panel 2 is provided with corner fastener 21, which is buckled between latch 3 and corner fastener 21. The design of latch 3 should consider easy operation while ensuring the firmness of the connection to prevent accidental opening.

[0025] The top of inverter junction box back shell 1 is fixedly connected with top plate 4, and the top plate 4 is only partially shown in the drawing and is actually closed. The top plate 4 is made of the same material as the back shell 1. The bottom of the inverter junction box back shell 1 is fixedly connected with the bottom plate 5. The bottom plate 5 considers electrical insulation and mechanical strength and is made of a material with good insulation performance, such as phenolic resin or polycarbonate.

[0026] A plurality of wiring terminals 6 are arranged on the top of the bottom plate 5 inside the inverter junction box back shell 1. The wiring terminals 6 are arranged along the transverse direction of the bottom plate 5. The wiring terminals 6 are arranged along the transverse direction of the bottom plate 5, which facilitates the access of cables and wiring operations. The top of the bottom plate 5 is fixedly connected with a winding column 7. The plurality of winding columns 7 correspond one-to-one with the wiring terminals 6. The position of the winding column 7 corresponds one-to-one with the wiring terminal 6, ensuring that each cable has appropriate guidance and fixation.

[0027] The winding column 7 is provided with an abutting assembly, which includes a limiting ring 71 fixedly connected to the top of the winding column 7. A supporting spring 72 is sleeved on the winding column 7. An abutting ring 73 is slidably sleeved on the winding column 7. The bottom of the abutting ring 73 abuts against the winding body. The supporting spring 72 is located between the limiting ring 71 and the abutting ring 73. The supporting spring 72 provides an elastic force, so that the abutting ring 73 can tightly adhere to the winding body, thereby keeping the cable fixed.

[0028] The wire insertion groove 8 is provided on one side of the inverter junction box back shell 1, and is in a long slot structure, providing a guide path for the cable, facilitating the cable to enter the junction box from the outside, and the long slot structure is convenient for cables of different diameters to pass through, and has a certain inclination angle.

[0029] The support blocks 81 are fixedly connected to the upper and lower sides of the wire insertion groove 8 on the inner side of the inverter junction box back shell 1, and the screw holes 83 are provided on the support blocks 81, and the adjusting screw rods 82 are inserted into the support blocks 81, and the adjusting screw rods 82 are connected with the screw holes 83 through internal and external threads.

[0030] The end portions of the adjusting screw rods 82 are rotatably connected with the abutting blocks 84, the end portions of the two abutting blocks 84 are connected in abutment, the positions and numbers of the support blocks 81 are adjusted according to the length of the wire insertion groove 8 and the number of the cables, the adjusting screw rods 82 are designed to be convenient for rotation adjustment, the abutting blocks 84 at the end portions of the adjusting screw rods 82 can fix the cables, and the cables are prevented from moving in the junction box.

[0031] The double-opening design of the panel 2 allows the junction box to be opened from two directions, so that more operation space can be provided when installing and maintaining, even in a narrow space, thereby simplifying the operation process, and this design solves the operation difficulty problem caused by the single-face opening of the traditional junction box; the stepped design of the back shell 1 with the upper part being higher and the lower part being lower is helpful for drainage and dust prevention, and protects the internal wiring terminals and cables from the influence of the external environment, and this structure is also convenient for the layout and heat dissipation of the internal elements; the wiring terminals 6 are arranged transversely along the bottom plate 5, which is convenient for the cable to be connected and wired, the winding columns 7 correspond to the wiring terminals 6 one by one, and provide appropriate guidance and fixation for the cable, avoiding the cable from being excessively bent or wound in the junction box; the limiting ring 71, the supporting spring 72 and the abutting ring 73 jointly constitute an abutting assembly for fixing the cable, the supporting spring 72 provides elastic force to make the abutting ring 73 tightly contact the winding body, and the limiting ring 71 limits the sliding range of the abutting ring 73; the wire insertion groove 8 provides a guide path for the cable, facilitating the cable to enter the junction box from the outside, and the design of the support blocks 81 and the adjusting screw rods 82 allows the user to adjust the fixed position according to the number and diameter of the cables, and the abutting blocks 84 are used to fix the cables to prevent them from moving in the junction box.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An inverter junction box comprising an inverter junction box backshell (1), characterized in that: The side of the inverter terminal box back shell (1) is hinged with a panel (2) through a hinge, the top of the inverter terminal box back shell (1) is provided with a top plate (4), the bottom of the inverter terminal box back shell (1) is provided with a bottom plate (5), the inside of the inverter terminal box back shell (1) is provided with a terminal (6) on the top of the bottom plate (5), the top of the bottom plate (5) is provided with a winding post (7), a plurality of winding posts (7) correspond one-to-one between the terminal (6), the winding post (7) is provided with an abutting assembly, and the side of the inverter terminal box back shell (1) is provided with a threading sliding groove (8).

2. The inverter junction box of claim 1, wherein: The panel (2) is provided with a hinge, and the inverter terminal box back shell (1) is provided with a stepped box structure.

3. The inverter junction box of claim 1, wherein: The panel (2) is provided with a latch (3), and the other panel (2) is provided with an angle fastener (21), and the latch (3) and the angle fastener (21) are buckled.

4. The inverter junction box of claim 1, wherein: The terminal (6) is provided with a plurality of terminals (6), and the plurality of terminals (6) are arranged along the transverse direction of the bottom plate (5), and the threading sliding groove (8) is provided with a long slot structure.

5. The inverter junction box of claim 1, wherein: The abutting assembly comprises a limiting ring (71), the limiting ring (71) is fixedly connected to the top of the winding post (7), the winding post (7) is sleeved with a supporting spring (72), and the winding post (7) is sleeved with an abutting ring (73).

6. The inverter junction box of claim 5, wherein: The bottom of the abutting ring (73) abuts on the winding body, and the supporting spring (72) is located between the limiting ring (71) and the abutting ring (73).

7. The inverter junction box of claim 1, wherein: The inside of the inverter terminal box back shell (1) is provided with a supporting block (81) on the upper and lower sides of the threading sliding groove (8), the supporting block (81) is provided with a threaded hole (83), the supporting block (81) is provided with an adjusting screw (82), and the adjusting screw (82) and the threaded hole (83) are connected through internal and external threads.

8. The inverter junction box of claim 7, wherein: The end of the adjusting screw (82) is rotatably provided with an abutting block (84), and the ends of the two abutting blocks (84) form a fixed connection.

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