Photovoltaic junction box with function of preventing cable from loosening

Abstract

The present invention relates to the technical field of photovoltaic junction boxes, and specifically to a photovoltaic junction box with a function of preventing cables from loosening, comprising: a box body, an extension ring fixed on the surface of the box body; a first screw-on ring, a second screw-on ring provided at the end of the first screw-on ring, a sleeve ring provided on the surface of the second screw-on ring, anti-slip grooves provided on the surface of the first screw-on ring, an elastic band provided on the surface of the first screw-on ring, a first vertical plate provided on the surface of the first screw-on ring, and a second vertical plate provided inside the first screw-on ring; and a second rubber tube provided on the surface of the second vertical plate; the beneficial effect is: the first connecting rod proposed by the present invention drives the sleeve ring to move on the surface of the second screw-on ring, the sleeve ring pulls the first rubber tube through the second connecting rod, so that the first rubber tube is deformed, and the air inside the second rubber tube enters into the interior of the first rubber tube through the connecting tube, and when there is sufficient air in the second rubber tube, the second rubber tube can be supported on the surface of the stress ring.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic junction boxes, and in particular to a photovoltaic junction box with a function of preventing cables from loosening. Background Art

[0002] The photovoltaic junction box is a connecting 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 the solar photovoltaic modules, connect the power generated by the solar cells to the external circuit, and conduct the current generated by the photovoltaic modules.

[0003] In the prior art, a cable is connected to the inside of a photovoltaic junction box. After the cable is fixed inside the photovoltaic junction box by a screw, a screw ring is provided on the surface of the cable. One end of the screw ring is supported on the surface of the cable, and the other end is screwed on the surface of the photovoltaic junction box to stabilize the end of the cable on the surface of the photovoltaic junction box.

[0004] However, when the screw ring is screwed and held on the surface of the photovoltaic junction box for a long time, it may be too tight to be removed when it needs to be removed, making it difficult to remove the cable from the inside of the photovoltaic junction box. Summary of the invention

[0005] The object of the present invention is to provide a photovoltaic junction box with a function of preventing cables from loosening, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a photovoltaic junction box with a function of preventing cables from loosening, comprising:

[0007] A box body, with an extension ring fixed on the surface of the box body;

[0008] A first screw-on ring, a second screw-on ring is arranged at the end of the first screw-on ring, a sleeve ring is arranged on the surface of the second screw-on ring, anti-slip grooves are arranged on the surface of the first screw-on ring, an elastic band is arranged on the surface of the first screw-on ring, a first vertical plate is arranged on the surface of the first screw-on ring, and a second vertical plate is arranged inside the first screw-on ring; and a second rubber tube is arranged on the surface of the second vertical plate.

[0009] Preferably, the interior of the box body is connected to a cable, a stress ring is fixed on the surface of the cable, a first screw ring is sleeved on the outside of the cable, the first screw ring and the second screw ring can move on the surface of the cable, and the first screw ring can be screwed on the surface of the extension ring.

[0010] Preferably, a lifting groove is provided on the surface of the first screw ring, a lifting block is inserted in the lifting groove, the lifting block can be lifted and moved in the lifting groove, a spring is provided in the lifting groove, one end of the spring is connected to the surface of the lifting block, and the other end is connected to the inner wall of the lifting groove.

[0011] Preferably, a through groove is provided on the surface of the lifting block, an elastic band is inserted into the through groove, and multiple groups of lifting blocks are provided, and the same group of elastic bands are inserted into the through grooves on the surfaces of the multiple groups of lifting blocks.

[0012] Preferably, a supporting block is fixed at the end of the lifting block, a limiting block is fixed on the surface of the first screw ring, a first connecting rod is inserted into the inside of the limiting block, the first connecting rod can move inside the limiting block, a force-bearing rod is fixed at the end of the first connecting rod, the force-bearing rod is located at the end of the supporting block, and the supporting block can be supported on the surface of the force-bearing rod when it moves, so that the force-bearing rod moves, and the force-bearing rod drives the first connecting rod to move.

[0013] Preferably, a box body is provided on the surface of the first vertical plate, and a second rubber tube is provided on the surface of the second vertical plate, the interiors of the second rubber tube and the first rubber tube are empty, the surfaces of the second rubber tube and the first rubber tube are connected through a connecting tube, the interior of the connecting tube is empty, the first rubber tube can communicate with the interior of the second rubber tube through the connecting tube, and the interiors of the first rubber tube and the second rubber tube are both filled with air.

[0014] Preferably, a second connecting rod is fixed on the surface of the first rubber tube, and the movement of the second connecting rod causes the first rubber tube to deform. The other end of the second connecting rod is fixed on the surface of the sleeve ring, and the second connecting rod moves with the sleeve ring.

[0015] Preferably, the end of the first connecting rod is fixed on the surface of the sleeve ring, and the sleeve ring moves with the first connecting rod.

[0016] Preferably, the end of the cable is fixed inside the box body by a screw rod, and when the first screw-connecting ring is screwed onto the surface of the extension ring, the second vertical plate is supported on the surface of the stress-bearing ring.

[0017] Preferably, the diameter of the second threaded ring is the same as the diameter of the cable, the diameter of the first threaded ring is larger than the diameter of the cable, and the diameter of the first threaded ring is consistent with the diameter of the outer portion of the extension ring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The first connecting rod proposed in the present invention drives the sleeve ring to move on the surface of the second threaded ring, and the sleeve ring pulls the first rubber tube through the second connecting rod, so that the first rubber tube is deformed, and the air inside the second rubber tube enters the interior of the first rubber tube through the connecting tube. When the air in the second rubber tube is sufficient, the second rubber tube can be supported on the surface of the stress ring to apply pressure to the stress ring. When the air in the second rubber tube is reduced, the pressure of the second rubber tube on the stress ring is reduced, thereby reducing the friction between the second rubber tube and the stress ring, so that effort can be saved when screwing the first threaded ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 This is a structural schematic diagram from another viewing angle of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the first screw-connected ring of the present invention.

[0023] Figure 4 This is a schematic structural diagram of the first screw-connecting ring from another perspective of the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the screw-connected ring of the present invention.

[0025] Figure 6 for Figure 5 A schematic diagram of the enlarged structure in the middle.

[0026] Figure 7 for Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0027] In the figure: box body 1, extension ring 2, force ring 3, cable 4, first screw ring 5, elastic band 6, anti-slip pattern 7, sleeve ring 8, second screw ring 9, first connecting rod 10, first vertical plate 11, first rubber tube 12, second rubber tube 13, second vertical plate 14, connecting tube 15, second connecting rod 16, force rod 17, limit block 18, spring 19, lifting groove 20, through groove 21, lifting block 22, top holding block 23. DETAILED DESCRIPTION

[0028] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 7 , the present invention provides a technical solution:

[0030] Embodiment 1: A photovoltaic junction box with a function of preventing cables from loosening, comprising: a box body 1, an extension ring 2 is fixed on the surface of the box body 1; a first screw ring 5, a second screw ring 9 is arranged at the end of the first screw ring 5, a sleeve ring 8 is arranged on the surface of the second screw ring 9, an anti-slip pattern 7 is arranged on the surface of the first screw ring 5, an elastic band 6 is arranged on the surface of the first screw ring 5, a first vertical plate 11 is arranged on the surface of the first screw ring 5, and a second vertical plate 14 is arranged inside the first screw ring 5; and a second rubber tube 13, which is arranged on the surface of the second vertical plate 14, the sleeve ring 8 pulls the first rubber tube 12 through the second connecting rod 16, so that the first rubber tube 12 is deformed, and the air inside the second rubber tube 13 enters the inside of the first rubber tube 12 through the connecting tube 15, and when the air in the second rubber tube 13 is sufficient, the second rubber tube 13 can be supported on the surface of the stress ring 3 to apply pressure to the stress ring 3.

[0031] Embodiment 2: On the basis of embodiment 1, a cable 4 is connected to the interior of the box body 1, a stress ring 3 is fixed on the surface of the cable 4, a first screw ring 5 is sleeved on the outside of the cable 4, the first screw ring 5 and the second screw ring 9 can move on the surface of the cable 4, the first screw ring 5 can be screwed on the surface of the extension ring 2, the box body 1 is provided on the surface of the first vertical plate 11, the second rubber tube 13 is provided on the surface of the second vertical plate 14, the interiors of the second rubber tube 13 and the first rubber tube 12 are empty, the surfaces of the second rubber tube 13 and the first rubber tube 12 are connected by a connecting tube 15, the interior of the connecting tube 15 is empty, the first rubber tube 12 can communicate with the interior of the second rubber tube 13 through the connecting tube 15, the interiors of the first rubber tube 12 and the second rubber tube 13 are both filled with air, a second connecting rod 16 is fixed on the surface of the first rubber tube 12, the second connecting rod 16 causes the first rubber tube 12 to deform after moving, and the second connecting rod 16 The other end is fixed to the surface of the sleeve ring 8, and the second connecting rod 16 moves with the sleeve ring 8. The end of the cable 4 is fixed to the inside of the box body 1 by a screw. When the first screwed ring 5 is screwed on the surface of the extension ring 2, the second vertical plate 14 is supported on the surface of the force ring 3. The diameter of the second screwed ring 9 is the same as the diameter of the cable 4. The diameter of the first screwed ring 5 is larger than the diameter of the cable 4. The diameter of the first screwed ring 5 is consistent with the diameter of the outside of the extension ring 2. The end of the cable 4 is fixed to the inside of the box body 1 by a screw, and the end of the first screwed ring 5 is screwed on the surface of the extension ring 2. The second vertical plate 14 inside the first screwed ring 5 is supported on the surface of the force ring 3, so that the force ring 3 is supported close to the surface of the box body 1. When the first screwed ring 5 is screwed, the lifting block 22 is pressed, so that the supporting block 23 on the surface of the lifting block 22 is supported on the surface of the force rod 17, the force rod 17 moves, and the force rod 17 drives the first connecting rod 10 to move.

[0032] A lifting groove 20 is provided on the surface of the first screw-connecting ring 5, in which a lifting block 22 is inserted. The lifting block 22 can be lifted and moved in the lifting groove 20. A spring 19 is provided in the lifting groove 20, one end of the spring 19 is connected to the surface of the lifting block 22, and the other end is connected to the inner wall of the lifting groove 20.

[0033] A through groove 21 is provided on the surface of the lifting block 22, and an elastic band 6 is inserted in the through groove 21. The lifting block 22 is provided with multiple groups, and the same group of elastic bands 6 are inserted in the through grooves 21 on the surfaces of the multiple groups of lifting blocks 22. A supporting block 23 is fixed to the end of the lifting block 22, and a limiting block 18 is fixed to the surface of the first screw ring 5. The inside of the limiting block 18 is inserted with the first connecting rod 10, and the first connecting rod 10 can move inside the limiting block 18. A force-bearing rod 17 is fixed to the end of the first connecting rod 10, and the force-bearing rod 17 is located at the end of the supporting block 23. When the supporting block 23 moves, it can be supported on the surface of the force-bearing rod 17, so that the force-bearing rod 17 moves, and the force-bearing rod 17 drives the first connecting rod 10 to move. The end of the first connecting rod 10 is fixed to the surface of the sleeve ring 8, and the sleeve ring 8 moves with the first connecting rod 10.

[0034] The end of the cable 4 is fixed to the inside of the box body 1 by a screw, and the end of the first screw ring 5 is screwed to the surface of the extension ring 2. The second vertical plate 14 inside the first screw ring 5 is supported on the surface of the force ring 3, so that the force ring 3 is supported close to the surface of the box body 1. When the cable 4 is pulled, it can prevent loosening. When the first screw ring 5 is screwed, the lifting block 22 is pressed, so that the supporting block 23 on the surface of the lifting block 22 is supported on the surface of the force rod 17, and the force rod 17 moves, and the force rod 17 drives the first connecting rod 10 to move, and the first connecting rod 10 drives the sleeve ring 8 to move in the first The surface of the second screw ring 9 moves, and the sleeve ring 8 pulls the first rubber tube 12 through the second connecting rod 16, so that the first rubber tube 12 is deformed, and the air inside the second rubber tube 13 enters the inside of the first rubber tube 12 through the connecting tube 15. When the air in the second rubber tube 13 is sufficient, the second rubber tube 13 can be supported on the surface of the force ring 3 to apply pressure to the force ring 3. When the air in the second rubber tube 13 is reduced, the pressure of the second rubber tube 13 on the force ring 3 is reduced, thereby reducing the friction between the second rubber tube 13 and the force ring 3, so that effort can be saved when screwing the first screw ring 5.

[0035] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A photovoltaic junction box with a function of preventing cables from loosening, characterized in that: include: A box body (1), an extension ring (2) is fixed on the surface of the box body (1); A first screw-on ring (5), a second screw-on ring (9) is arranged at the end of the first screw-on ring (5), a sleeve ring (8) is arranged on the surface of the second screw-on ring (9), an anti-slip pattern (7) is arranged on the surface of the first screw-on ring (5), an elastic band (6) is arranged on the surface of the first screw-on ring (5), a first vertical plate (11) is arranged on the surface of the first screw-on ring (5), and a second vertical plate (14) is arranged inside the first screw-on ring (5); and a second rubber tube (13) is arranged on the surface of the second vertical plate (14).

2. A photovoltaic junction box with a function of preventing cables from loosening according to claim 1, characterized in that: The interior of the box body (1) is connected to a cable (4), a stress ring (3) is fixed on the surface of the cable (4), a first screw-connecting ring (5) is sleeved on the outside of the cable (4), the first screw-connecting ring (5) and the second screw-connecting ring (9) are movable on the surface of the cable (4), and the first screw-connecting ring (5) is screw-connected to the surface of the extension ring (2).

3. A photovoltaic junction box with a function of preventing cables from loosening according to claim 2, characterized in that: A lifting groove (20) is provided on the surface of the first screw-connecting ring (5), a lifting block (22) is inserted into the lifting groove (20), and the lifting block (22) can be lifted and moved in the lifting groove (20). A spring (19) is provided in the lifting groove (20), one end of the spring (19) is connected to the surface of the lifting block (22), and the other end is connected to the inner wall of the lifting groove (20).

4. A photovoltaic junction box with a function of preventing cables from loosening according to claim 3, characterized in that: The surface of the lifting block (22) is provided with a through groove (21), and an elastic band (6) is inserted into the through groove (21). The lifting block (22) is provided with multiple groups, and the through grooves (21) on the surfaces of the multiple groups of lifting blocks (22) are all inserted with the same group of elastic bands (6).

5. A photovoltaic junction box with a function of preventing cables from loosening according to claim 4, characterized in that: A supporting block (23) is fixed at the end of the lifting block (22); a limiting block (18) is fixed on the surface of the first screw ring (5); a first connecting rod (10) is inserted into the limiting block (18); the first connecting rod (10) can move inside the limiting block (18); a force-bearing rod (17) is fixed at the end of the first connecting rod (10); the force-bearing rod (17) is located at the end of the supporting block (23); when the supporting block (23) moves, it can be supported on the surface of the force-bearing rod (17), so that the force-bearing rod (17) moves, and the force-bearing rod (17) drives the first connecting rod (10) to move.

6. A photovoltaic junction box with a function of preventing cables from loosening according to claim 5, characterized in that: The surface of the first vertical plate (11) is provided with a box body (1), the surface of the second vertical plate (14) is provided with a second rubber tube (13), the interiors of the second rubber tube (13) and the first rubber tube (12) are empty, the surfaces of the second rubber tube (13) and the first rubber tube (12) are connected via a connecting tube (15), the interior of the connecting tube (15) is empty, the first rubber tube (12) can communicate with the interior of the second rubber tube (13) via the connecting tube (15), and the interiors of the first rubber tube (12) and the second rubber tube (13) are both filled with air.

7. A photovoltaic junction box with a function of preventing cables from loosening according to claim 6, characterized in that: A second connecting rod (16) is fixed on the surface of the first rubber tube (12), and the first rubber tube (12) is deformed when the second connecting rod (16) moves. The other end of the second connecting rod (16) is fixed on the surface of the sleeve ring (8), and the second connecting rod (16) moves along with the sleeve ring (8).

8. The photovoltaic junction box with the function of preventing the cable from loosening according to claim 7, characterized in that: The end of the first connecting rod (10) is fixed on the surface of the sleeve ring (8), and the sleeve ring (8) moves along with the first connecting rod (10).

9. The photovoltaic junction box with the function of preventing the cable from loosening according to claim 8, characterized in that: The end of the cable (4) is fixed inside the box body (1) by means of a screw rod, and when the first screw-connecting ring (5) is screwed onto the surface of the extension ring (2), the second vertical plate (14) is supported on the surface of the force-bearing ring (3).

10. A photovoltaic junction box with a function of preventing cables from loosening according to claim 9, characterized in that: The diameter of the second screw-on ring (9) is the same as the diameter of the cable (4), the diameter of the first screw-on ring (5) is larger than the diameter of the cable (4), and the diameter of the first screw-on ring (5) is consistent with the diameter of the outside of the extension ring (2).

Images