Low-temperature-resistant photovoltaic junction box

Abstract

The utility model relates to the technical field of low-temperature-resistant photovoltaic junction boxes, in particular to a low-temperature-resistant photovoltaic junction box, which comprises an ABS (acrylonitrile butadiene styrene) plastic shell, a plug-in port is arranged at the rear end of the ABS plastic shell, clamping grooves are arranged on two sides of the plug-in port of the ABS plastic shell, first springs are arranged in the clamping grooves, one side of each first spring is connected with a clamping block, and the other side of each first spring is connected with a second spring. The outer sides of the clamping blocks are connected with connecting blocks, the inner sides of the two groups of connecting blocks are respectively connected with a first clamping ring, a second clamping ring and a cable, and the cable can be inserted into the insertion port; the low-temperature-resistant photovoltaic junction box provided by the utility model has the beneficial effects that the first clamping ring and the second clamping ring are pushed towards the inner side of the plugging port, so that the limiting blocks on the plugging rods arranged at the upper end and the lower end of the second clamping ring are aligned with the extending ports formed in the upper end and the lower end of the first clamping ring; and meanwhile, the limiting block pops out of the telescopic groove through a second spring connected to the bottom and leaks out of the limiting block, and telescopic fixing of the first clamping ring and the second clamping ring is achieved.

Description

Technical Field

[0001] The utility model relates to the field of low-temperature resistant photovoltaic junction boxes, in particular to a low-temperature resistant photovoltaic junction box. Background Art

[0002] The photovoltaic junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the power generated by solar cells to external lines, and conduct the current generated by photovoltaic modules.

[0003] In the prior art, the box body of the photovoltaic junction box is provided with a plug interface for connecting the cables at the position where the cables are led out, and the cables enter the interior of the box body through the plug interface and are connected to the diodes inside the box body.

[0004] However, in the prior art, since the cable is often pulled during use, the connection between the diode inside the box and the cable is not reliable enough, and the cable is easily removed. Utility Model Content

[0005] The purpose of the utility model is to provide a low temperature resistant photovoltaic junction box to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ABS plastic shell, a plug-in interface is provided at the rear end of the ABS plastic shell, clamping grooves are provided on both sides of the plug-in interface of the ABS plastic shell, a first spring is provided in the clamping groove, one side of the first spring is connected to a clamping block, the outer side of the clamping block is connected to a connecting block, the inner sides of the two groups of connecting blocks are respectively connected to a first clamping ring, a second clamping ring and a cable, and the cable can be plugged into the plug-in interface.

[0007] Preferably, the ABS plastic shell is ABS plastic. ABS (Acrylonitrile-Butadiene-Styrene) is a resin with good comprehensive performance, high impact strength and surface hardness, good dimensional stability, and can still show a certain toughness at -40°C, and can be used in a temperature range of -40 to 100°C. Preferably, the upper and lower ends of the inner side of the first clamping ring are provided with plug-in grooves, and the upper and lower ends of the inner side of the second clamping ring are provided with plug-in rods. The plug-in groove is parallel to the plug-in rod, and the plug-in rod can be plugged into the plug-in groove to clamp and fix the cable plugged into the plug interface.

[0008] Preferably, a telescopic groove is provided at the outer end of the plug rod, a second spring is arranged in the telescopic groove, the top of the second spring is connected to the limit block, and the second spring can drive the limit block to telescope in the telescopic groove.

[0009] Preferably, the first spring can drive the first clamping ring and the second clamping ring connected to the inner sides of the two groups of connecting blocks outside the clamping block to expand and contract, so that the connecting rods at the upper and lower ends of the inner side of the second clamping ring are inserted into the connecting grooves at the two ends of the inner side of the first clamping ring.

[0010] Preferably, a protruding opening is provided at the top of the plug-in rod, and the second spring in the telescopic groove at the top of the plug-in rod can drive the limit block to pop out from the telescopic groove by opening, and pop out from the extension, thereby fixing the telescopic connection of the first clamping ring and the second clamping ring to prevent the first clamping ring and the second clamping ring from loosening their clamping of the cable.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model proposes a low-temperature resistant photovoltaic junction box, which pushes the first clamping ring and the second clamping ring toward the inner side of the plug interface so that the limit blocks on the plug rods arranged at the upper and lower ends of the second clamping ring are aligned with the protruding openings opened at the upper and lower ends of the first clamping ring, and at the same time, the limit blocks are popped out from the telescopic groove through the second spring connected to the bottom and leak out from the limit blocks, so as to fix the telescopic connection of the first clamping ring and the second clamping ring. At this time, by pushing the first clamping ring and the second clamping ring inward, the first clamping ring and the second clamping ring firmly clamp and fix the outer side of the cable plugged into the plug interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the clamping ring of the utility model.

[0016] In the figure: ABS plastic shell 1, plug interface 2, clamping groove 3, first spring 4, clamping block 5, connecting block 6, first clamping ring 7, second clamping ring 8, plug-in groove 9, plug-in rod 10, telescopic groove 11, second spring 12, limit block 13, rubber pad 14, cable 15. DETAILED DESCRIPTION

[0017] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Embodiment 1

[0019] See also Figure 1-Figure 3 The utility model provides a technical solution: an ABS plastic shell 1, a plug-in interface 2 is provided at the rear end of the ABS plastic shell 1, and clamping grooves 3 are provided on both sides of the plug-in interface 2 of the ABS plastic shell 1, and a first spring 4 is arranged in the clamping groove 3, and one side of the first spring 4 is connected to a clamping block 5, and the outer side of the clamping block 5 is connected to a connecting block 6, and the inner sides of the two groups of connecting blocks 6 are respectively connected to a first clamping ring 7, a second clamping ring 8 and a cable 15, and the cable 15 can be plugged into the plug-in interface 2; the clamping block 5 connected to the inner side of the connecting block 6 squeezes the clamping block 5 in the clamping groove 3, so that the first spring 4 drives the first clamping ring 7 and the second clamping ring 8 to slide outward, and the gap between the first clamping ring 7 and the second clamping ring 8 is enlarged, and then the cable 15 is plugged into the plug-in interface 2.

[0020] Embodiment 2

[0021] On the basis of the first embodiment, the ABS plastic shell 1 is ABS plastic. ABS acrylonitrile-butadiene-styrene is a resin with good comprehensive properties, high impact strength and surface hardness, good dimensional stability, and can still show certain toughness at -40°C, and can be used in a temperature range of -40 to 100°C; plug-in grooves 9 are provided at the upper and lower ends of the inner side of the first clamping ring 7, and plug-in rods 10 are provided at the upper and lower ends of the inner side of the second clamping ring 8. The plug-in groove 9 is parallel to the plug-in rod 10. The plug-in rod 10 can be plugged into the plug-in groove 9 to clamp and fix the cable 15 plugged into the plug interface 2; a telescopic groove 11 is provided at the outer end of the plug-in rod 10, and a second spring 12 is provided in the telescopic groove 11. The top of the second spring 12 is connected to a limit block 13, and the second spring 12 can drive the limit block 13 to telescope in the telescopic groove 11. The limiting block 13 pops out from the telescopic groove 11 through the second spring 12 connected to the bottom, and leaks out of the limiting block 13 to fix the telescopic movement of the first clamping ring 7 and the second clamping ring 8 .

[0022] Embodiment 3

[0023] On the basis of the second embodiment, the first spring 4 can drive the first clamping ring 7 and the second clamping ring 8 connected to the inner sides of the two groups of connecting blocks 6 on the outer sides of the clamping block 5 to expand and contract, so that the plug-in rods 10 at the upper and lower ends of the inner side of the second clamping ring 8 are inserted into the plug-in grooves 9 at the two ends of the inner side of the first clamping ring 7; an extension opening is provided at the top of the plug-in rod 10, and the second spring 12 in the telescopic groove 11 at the top of the plug-in rod 10 can drive the limit block 13 to pop out of the telescopic groove 11 by opening, and pop out from the extension, thereby fixing the expansion and contraction of the first clamping ring 7 and the second clamping ring 8, and preventing the first clamping ring 7 and the second clamping ring 8 from loosening the clamping of the cable 15; the first clamping ring 7 and the second clamping ring 8 firmly clamp and fix the outer side of the cable 15 plugged into the plug interface 2, to prevent the cable 15 from falling off.

[0024] In actual use, when the cable 15 is connected to the ABS plastic housing 1, the first clamping ring 7 and the second clamping ring 8 are first pushed outward, so that the clamping block 5 connected to the inner side of the connecting block 6 squeezes the clamping block 5 in the clamping groove 3, so that the first spring 4 drives the first clamping ring 7 and the second clamping ring 8 to slide outward, and the gap between the first clamping ring 7 and the second clamping ring 8 is enlarged, and then the cable 15 is inserted into the plug interface 2, and then the first clamping ring 7 and the second clamping ring 8 are released. The first spring 4 drives the first clamping ring 7 and the second clamping ring 8 to rebound through tension, and then the first clamping ring 7 and the second clamping ring 8 are pushed toward the inner side of the plug interface 2, so that the upper and lower ends of the second clamping ring 8 are set. The limit block 13 on the plug rod 10 is aligned with the protruding openings opened at the upper and lower ends of the first clamping ring 7. At the same time, the limit block 13 pops out from the telescopic groove 11 through the second spring 12 connected to the bottom and leaks out from the limit block 13, which fixes the telescopic first clamping ring 7 and the second clamping ring 8. At this time, by pushing the first clamping ring 7 and the second clamping ring 8 inward, the first clamping ring 7 and the second clamping ring 8 firmly clamp the outer side of the cable 15 plugged into the plug interface 2 to prevent the cable 15 from falling off. Rubber pads 14 are provided on the inner sides of the first clamping ring 7 and the second clamping ring 8. The rubber pads 14 protect the cable 15 to prevent the first clamping ring 7 and the second clamping ring 8 from damaging the cable 15.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low temperature resistant photovoltaic junction box, characterized in that: The low temperature resistant photovoltaic junction box comprises: an ABS plastic shell (1), a plug interface (2) is provided at the rear end of the ABS plastic shell (1), clamping grooves (3) are provided on both sides of the plug interface (2) of the ABS plastic shell (1), a first spring (4) is arranged in the clamping groove (3), one side of the first spring (4) is connected to a clamping block (5), the outer side of the clamping block (5) is connected to a connecting block (6), and the inner sides of two groups of connecting blocks (6) are respectively connected to a first clamping ring (7) and a second clamping ring (8) and A cable (15), the cable (15) can be plugged into the plug interface (2).

2. A low temperature resistant photovoltaic junction box according to claim 1, characterized in that: The first clamping ring (7) is provided with plug-in grooves (9) at the upper and lower ends of the inner side, and the second clamping ring (8) is provided with plug-in rods (10) at the upper and lower ends of the inner side. The plug-in groove (9) is parallel to the plug-in rod (10). The plug-in rod (10) can be plugged into the plug-in groove (9) to clamp and fix the cable (15) plugged into the plug interface (2).

3. A low temperature resistant photovoltaic junction box according to claim 2, characterized in that: The outer end of the plug rod (10) is provided with a telescopic groove (11), a second spring (12) is arranged in the telescopic groove (11), the top of the second spring (12) is connected to a limit block (13), and the second spring (12) can drive the limit block (13) to telescope in the telescopic groove (11).

4. The low temperature resistant photovoltaic junction box according to claim 3, characterized in that: The first spring (4) can drive the first clamping ring (7) and the second clamping ring (8) connected to the inner sides of the two groups of connecting blocks (6) outside the clamping block (5) to expand and contract, so that the plug-in rods (10) at the upper and lower ends of the inner side of the second clamping ring (8) are plugged into the plug-in grooves (9) at the two ends of the inner side of the first clamping ring (7).

5. A low temperature resistant photovoltaic junction box according to claim 4, characterized in that: The top of the plug rod (10) is provided with an extension opening, and the second spring (12) in the telescopic groove (11) at the top of the plug rod (10) can open and drive the limit block (13) to pop out from the telescopic groove (11), and then pop out from the extension opening, thereby fixing the telescopic connection of the first clamping ring (7) and the second clamping ring (8), and preventing the first clamping ring (7) and the second clamping ring (8) from loosening the clamping of the cable (15).

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