A photovoltaic junction box

Abstract

The present invention discloses a photovoltaic junction box, specifically relating to the field of junction boxes, including a device body. A first groove is formed on one side of the device body, and a plurality of second grooves are formed on the inner wall of the first groove. A connecting piece is fixedly installed on the inner wall of the plurality of second grooves. A first wire is fixedly installed on one side of the connecting piece, and a first insulating sleeve is fixedly installed on the outer wall of the first wire. By providing an arc-shaped conductive plate, when the transmission line outside the junction box is pulled by an external force, the outside of the first connecting piece is pulled by the external force, and at the same time, the second insulating sleeve is driven by the second guide rod to move to the same side. As a result, the second insulating sleeve squeezes the spring to move to the same side, and at the same time, the carbon ring rotates on the outer wall of the first wire. Thus, the connecting conductor is driven by the carbon tube and the arc-shaped conductive plate to slide on the outer wall of the first wire, avoiding short circuits at the internal connections of the junction box caused by the external force pulling of the transmission line and improving the practicability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of junction boxes, and more specifically, to a photovoltaic junction box. Background Art

[0002] A photovoltaic junction box is one of the electrical accessories, a connecting device between a solar cell array composed of solar cell modules and a solar charging control device. Its main function is to connect and protect the solar photovoltaic modules, connect the electricity generated by the solar cells to the external circuit, and conduct the current generated by the photovoltaic modules. At the joint part of the wires (such as when the line is relatively long or the wire pipe needs to turn a corner), a junction box is used as a transition. The wire pipe is connected to the junction box, and the wires inside the pipe are connected in the junction box, playing the role of protecting the wires and connecting the wires.

[0003] However, in the existing technology, when using a junction box to connect a transmission line to a solar cell, the structure of the photovoltaic junction box is single. When the transmission line is pulled by an external force, it is easy to make the connection between the transmission line and the photovoltaic junction box loose, resulting in a short circuit, causing the temperature at the connection to rise, triggering a fire, causing unnecessary losses, and reducing the practicality of the device. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a photovoltaic junction box. By setting an arc-shaped conductive plate, when the transmission line outside the junction box is pulled by an external force, the outer side of the first connecting piece is pulled by the external force, and at the same time, the second insulating sleeve is driven to move to the same side through the second guide rod, so that the second insulating sleeve squeezes the spring to move to the same side. At the same time, the carbon ring rotates on the outer wall of the first wire, so that the connecting conductor slides on the outer wall of the first wire through the carbon tube and the arc-shaped conductive plate, so as to solve the problems proposed in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A photovoltaic junction box, including a device body, a first groove is opened on one side of the device body, a plurality of second grooves are opened on the inner wall of the first groove, a connecting piece is fixedly installed on the inner wall of the plurality of second grooves, a first wire is fixedly installed on one side of the connecting piece, and a first insulating sleeve is fixedly installed on the outer wall of the first wire;

[0006] A connecting conductor is arranged on the outer wall of the first wire, a plurality of arc-shaped conductive plates are fixedly installed on the inner wall of the connecting conductor, a plurality of carbon tubes are fixedly installed on the inner wall of the plurality of arc-shaped conductive plates, a plurality of carbon rings are rotatably installed on the outer wall of the plurality of carbon tubes, the carbon rings are rotatably connected to the first wire, a plurality of third grooves are opened on the outer wall of the connecting conductor, a first guide rod is fixedly installed on the inner wall of the plurality of third grooves, and a rubber block is fixedly installed on the outer wall of the plurality of first guide rods;

[0007] One end of the rubber block is slidably installed with a plurality of second insulating sleeves. One end of the plurality of second insulating sleeves is provided with a fourth groove. A second guide rod is slidably installed on the inner wall of the fourth groove. The second guide rod is fixedly connected to the first guide rod. One end of the second insulating sleeve is fixedly installed with a slide rod. The slide rod is slidably installed with the rubber block. A spring is arranged on the outer wall of the slide rod. A plurality of fifth grooves are provided on one side of the device body. A plurality of sixth grooves are provided on the inner walls of the plurality of fifth grooves. A fixing rod is fixedly installed on the inner walls of the plurality of sixth grooves. A fixing member is slidably installed on the outer wall of the fixing rod. A first wiring member is fixedly installed on the inner wall of the fixing member. The first wiring member is fixedly connected to the second guide rod.

[0008] In a preferred embodiment, a plurality of wiring blocks are fixedly installed on the inner wall of the first wiring member. The first wiring member is fixedly connected to the second guide rod. One end of the first wiring member is fixedly installed with a third wire. The third wire is fixedly connected to the first wiring member.

[0009] In a preferred embodiment, a plurality of protection plates are fixedly installed on the inner wall of the first wiring member. A second wiring member is fixedly installed on the outer wall of the first wiring member. A movable member is rotatably installed on the inner wall of the second wiring member.

[0010] In a preferred embodiment, an external wire is fixedly installed on the outer wall of the movable member. A third insulating sleeve is arranged on the outer wall of the external wire. The third insulating sleeve is fixedly connected to the movable member.

[0011] In a preferred embodiment, a seventh groove is provided on one side of the device body. A plurality of eighth grooves are provided on the inner wall of the seventh groove. A hook is slidably installed on the inner walls of the plurality of eighth grooves.

[0012] In a preferred embodiment, one end of the hook is fixedly connected to a first rubber rod. A limiting ring is fixedly installed on the outer wall of the first rubber rod. A plurality of sliding blocks are slidably installed on the inner wall of the seventh groove.

[0013] In a preferred embodiment, a second rubber rod is slidably installed on the outer wall of the first rubber rod. The second rubber rod is fixedly connected to the sliding block. An installation member is fixedly installed on one end of the sliding block.

[0014] The technical effects and advantages of the present invention:

[0015] 1. In the present invention, by providing an arc-shaped conductive plate, when the transmission line outside the junction box is pulled by an external force, the outer side of the first connection member is moved by the external force. At the same time, the second insulating sleeve is driven by the second guide rod to move to the same side, so that the second insulating sleeve squeezes the spring to move to the same side. At the same time, the carbon ring rotates on the outer wall of the first wire, so that the connecting conductor slides on the outer wall of the first wire through the carbon tube and the arc-shaped conductive plate, avoiding short circuits at the internal connections of the junction box caused by the external force pulling of the transmission line and improving the practicability of the device;

[0016] 2. In the present invention, by providing a first rubber rod, when the junction box is impacted by an external force, the first rubber rod contacts the impact object, causing the first rubber rod to bend inward. Through the hook for connection and restraint, the impact force is absorbed. At the same time, when the impact object impacts from the side, the impact object contacts the first rubber rod, causing the hook to slide on the inner wall of the eighth groove. At the same time, it drives the first rubber rod to slide on the outer wall, causing the limiting ring to contact the second rubber rod, causing the second rubber rod to distort and absorb the impact force. When the impact force disappears, the second rubber rod drives the limiting ring to cause the hook to slide on the inner wall of the eighth groove and return to the original state, facilitating the improvement of the self-protection ability of the junction box and avoiding damage to the internal power button of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 is the present invention Figure 1 an enlarged view of the structure of part A.

[0019] Figure 3 is a schematic diagram of the structure of the first rubber rod of the present invention.

[0020] Figure 4 is the present invention Figure 3 an enlarged view of the structure of part B.

[0021] Figure 5 is a cross-sectional view of the present invention.

[0022] Figure 6 is the present invention Figure 5 an enlarged view of the structure of part C.

[0023] Figure 7 is the present invention Figure 5 an enlarged view of the structure of part D.

[0024] The reference numerals are: 1, device body; 2, first groove; 3, second groove; 4, connecting piece; 5, first wire; 6, first insulating sleeve; 7, connecting conductor; 8, arc-shaped conductive plate; 9, carbon tube; 10, carbon ring; 11, third groove; 12, first guide rod; 13, rubber block; 14, second insulating sleeve; 15, fourth groove; 16, second guide rod; 17, sliding rod; 18, spring; 19, fifth groove; 20, sixth groove; 21, fixing rod; 22, fixing piece; 23, first wiring piece; 24, wiring block; 25, third wire; 26, protection plate; 27, second wiring piece; 28, movable piece; 29, external wire; 30, third insulating sleeve; 31, seventh groove; 32, eighth groove; 33, hook; 34, first rubber rod; 35, limiting ring; 36, sliding block; 37, second rubber rod; 38, mounting piece. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Referring to the attached drawings of the specification Figures 1-7 A photovoltaic junction box according to an embodiment of the present invention includes a device body 1. A first groove 2 is opened on one side of the device body 1. A plurality of second grooves 3 are opened on the inner wall of the first groove 2. A connecting piece 4 is fixedly installed on the inner walls of the plurality of second grooves 3. A first wire 5 is fixedly installed on one side of the connecting piece 4. A first insulating sleeve 6 is fixedly installed on the outer wall of the first wire 5;

[0027] A connecting conductor 7 is arranged on the outer wall of the first wire 5. A plurality of arc-shaped conductive plates 8 are fixedly installed on the inner wall of the connecting conductor 7. A plurality of carbon tubes 9 are fixedly installed on the inner walls of the plurality of arc-shaped conductive plates 8. A plurality of carbon rings 10 are rotatably installed on the outer walls of the plurality of carbon tubes 9. The carbon rings 10 are rotatably connected to the first wire 5. A plurality of third grooves 11 are opened on the outer wall of the connecting conductor 7. A first guide rod 12 is fixedly installed on the inner walls of the plurality of third grooves 11. A rubber block 13 is fixedly installed on the outer walls of the plurality of first guide rods 12;

[0028] One end of the rubber block 13 is slidably installed with a plurality of second insulating sleeves 14. One end of the plurality of second insulating sleeves 14 is provided with a fourth groove 15. A second guide rod 16 is slidably installed on the inner wall of the fourth groove 15. The second guide rod 16 is fixedly connected to the first guide rod 12. One end of the second insulating sleeve 14 is fixedly installed with a slide rod 17. The slide rod 17 is slidably installed with the rubber block 13. A spring 18 is arranged on the outer wall of the slide rod 17. A plurality of fifth grooves 19 are provided on one side of the device body 1. A plurality of sixth grooves 20 are provided on the inner walls of the plurality of fifth grooves 19. A fixing rod 21 is fixedly installed on the inner walls of the plurality of sixth grooves 20. A fixing member 22 is slidably installed on the outer wall of the fixing rod 21. A first wiring member 23 is fixedly installed on the inner wall of the fixing member 22. The first wiring member 23 is fixedly connected to the second guide rod 16;

[0029] It should be noted that such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7As shown in the figure, the first insulating sleeve 6 is used to protect the first wire 5 to prevent the first wire 5 from contacting the power button inside the junction box, which may cause a short circuit. The connecting conductor 7 is used to receive the power on the first wire 5. The arc-shaped conductive plate 8 is a connecting piece between the connecting conductor 7 and the first wire 5. The carbon tube 9 and the carbon ring 10 are conductors for connecting the connecting conductor 7 and the first wire 5. At the same time, the carbon tube 9 and the carbon ring 10 replace the connection buckle generated by the connection between traditional wires, which does not change the movement of the wires and is not prone to short circuits. The first guide rod 12 is used to conduct the power connecting piece. The rubber block 13 is used to prevent the second guide rod 16 from contacting the power button inside the junction box, which may cause a short circuit. The second insulating sleeve 14 is used to protect the second guide rod 16 and prevent the second guide rod 16 from contacting the power button inside the junction box, which may cause a short circuit. The sliding rod 17 is used to limit the movement of the second insulating sleeve 14. The spring 18 facilitates the second guide rod 16 to return to its original state when the external force is released after being pulled by the external force. The fixing piece 22 is used to install the first wiring piece 23. The fixing rod 21 is for the movement path of the first wiring piece 23. The first wiring piece 23 is used to connect the external connecting wire to the junction box. When the transmission line outside the junction box is pulled by an external force, the first wiring piece 23 moves outward under the action of the external force. At the same time, the second insulating sleeve 14 is driven by the second guide rod 16 to move to the same side. As a result, the second insulating sleeve 14 squeezes the spring 18 and moves to the same side. At the same time, the carbon ring 10 rotates on the outer wall of the first wire 5. Thus, the connecting conductor 7 is driven to slide on the outer wall of the first wire 5 through the carbon tube 9 and the arc-shaped conductive plate 8. When the force is over, the spring 18 drives the sliding rod 17 to slide inward, causing the second guide rod 16 to drive the first wiring piece 23 and the fixing piece 22 to slide inward on the outer wall of the fixing rod 21. At the same time, the second insulating sleeve 14 slides inward at one end of the rubber block 13. Through the first guide rod 12, the carbon ring 10 rotates on the outer wall of the first wire 5. Thus, the connecting conductor 7 is driven to slide on the outer wall of the first wire 5 through the carbon tube 9 and the arc-shaped conductive plate 8, pulling the second guide rod 16 and making the connecting conductor 7 return to its original state. Therefore, it is possible to prevent the transmission line from being pulled by an external force and causing a short circuit at the internal connection of the junction box.

[0030] A plurality of wiring blocks 24 are fixedly installed on the inner wall of the first wiring piece 23. The first wiring piece 23 is fixedly connected to the second guide rod 16. One end of the first wiring piece 23 is fixedly installed with a third wire 25, and the third wire 25 is fixedly connected to the first wiring piece 23.

[0031] It should be noted that, as Figure 7 shown, the wiring block 24 is used as a connecting conductor between the third wire 25 and the second guide rod 16, preventing the connection between wires, reducing the transmission force, and causing power loss. The third wire 25 is used to transmit power.

[0032] A plurality of protection plates 26 are fixedly installed on the inner wall of the first wiring member 23, a second wiring member 27 is fixedly installed on the outer wall of the first wiring member 23, and a movable member 28 is rotatably installed on the inner wall of the second wiring member 27;

[0033] An external connecting wire 29 is fixedly installed on the outer wall of the movable member 28, a third insulating sleeve 30 is arranged on the outer wall of the external connecting wire 29, and the third insulating sleeve 30 is fixedly connected with the movable member 28;

[0034] It should be noted that, as Figure 7 shown, the protection plate 26 is used to protect the second guide rod 16 and the third wire 25 inside 23. The second wiring member 27 is used as a power transmission member and is also used to connect the wire 29 and the wiring connection member. The movable member 28 facilitates the movement of the external connecting wire 29, avoiding damage to the external connecting wire 29 when it is bent due to being pulled. The third insulating sleeve 30 is used to protect the external connecting wire 29 and prevent the external connecting wire 29 from being damaged.

[0035] A seventh groove 31 is formed on one side of the device body 1, a plurality of eighth grooves 32 are formed on the inner wall of the seventh groove 31, and a hook 33 is slidably installed on the inner walls of the plurality of eighth grooves 32;

[0036] One end of the hook 33 is fixedly connected with a first rubber rod 34, a limiting ring 35 is fixedly installed on the outer wall of the first rubber rod 34, and a plurality of sliding blocks 36 are slidably installed on the inner wall of the seventh groove 31;

[0037] A second rubber rod 37 is slidably installed on the outer wall of the first rubber rod 34, the second rubber rod 37 is fixedly connected with the sliding block 36, and a mounting member 38 is fixedly installed at one end of the sliding block 36;

[0038] It should be noted that, as Figure 1 、 Figure 3 、 Figure 5As shown, the seventh groove 31 is for the moving path of the hook 33. The hook 33 is used to limit the first rubber rod 34. The first rubber rod 34 is elastic, so that when the first rubber rod 34 is subjected to an external force, it can absorb the external force and at the same time can return to its original state. The limiting ring 35 is used to limit the movement of the first rubber rod 34. At the same time, through the cooperation of the limiting ring 35 and the second rubber rod 37, when the first rubber rod 34 is subjected to an external force, it can return to its original state. The second rubber rod 37 is elastic, which is convenient for the first rubber rod 34 to absorb the external force when it is subjected to an external force, and at the same time, through the limiting ring 35, the first rubber rod 34 can return to its original state. When the junction box is impacted by an external force, the first rubber rod 34 contacts the impact object, causing the first rubber rod 34 to bend inward. It is bound by the connection between the hook 33 and 32, so as to absorb the impact force. At the same time, when the impact object impacts from the side, the impact object contacts the first rubber rod 34, causing the hook 33 to slide on the inner wall of the eighth groove 32, and at the same time driving the first rubber rod 34 to slide on the outer wall of 37, so that the limiting ring 35 contacts the second rubber rod 37, causing the second rubber rod 37 to distort and absorb the impact force. When the impact force disappears, the limiting ring 35 is driven by the second rubber rod 37 to make the hook 33 slide on the inner wall of the eighth groove 32 and return to its original state, which is convenient to improve the self-protection ability of the junction box.

[0039] Working principle: When the transmission line outside the junction box is pulled by an external force, the outer side of the first wiring member 23 is moved by the external force. At the same time, the second insulating sleeve 14 is driven by the second guide rod 16 to move in the same direction, so that the second insulating sleeve 14 squeezes the spring 18 to move in the same direction. At the same time, the carbon ring 10 rotates on the outer wall of the first wire 5, so that the connecting conductor 7 slides on the outer wall of the first wire 5 through the carbon tube 9 and the arc-shaped conductive plate 8. When the force application ends, the spring 18 drives 17 to slide inward, so that the second guide rod 16 drives the first wiring member 23 and the fixing member 22 to slide inward on the outer wall of the fixing rod 21. At the same time, the second insulating sleeve 14 slides inward at one end of the rubber block 13. Through the first guide rod 12, the carbon ring 10 rotates on the outer wall of the first wire 5, so that the connecting conductor 7 slides on the outer wall of the first wire 5 through the carbon tube 9 and the arc-shaped conductive plate 8 to pull the second guide rod 16, so that the connecting conductor 7 returns to its original state, thus avoiding short circuits at the internal connections of the junction box due to the external force pulling of the transmission line. At the same time, when the external wire 29 is pulled, the movable member 28 rotates inside the second wiring member 27, thus avoiding damage to the external wire 29 when the external wire 29 is bent by an external force. At the same time, when the junction box is impacted by an external force, the first rubber rod 34 contacts the impact object, so that the first rubber rod 34 bends inward and is bound by the connection of the hooks 33 and 32, thereby absorbing the impact force. At the same time, when the impact object impacts from the side, the impact object contacts the first rubber rod 34, so that the hook 33 slides on the inner wall of the eighth groove 32, and at the same time drives the first rubber rod 34 to slide on the outer wall of 37, so that the limiting ring 35 contacts the second rubber rod 37, so that the second rubber rod 37 is distorted to absorb the impact force. When the impact force disappears, the second rubber rod 37 drives the limiting ring 35 to make the hook 33 slide on the inner wall of the eighth groove 32 and return to its original state, which is convenient for improving the self-protection ability of the junction box and avoiding damage to the power button inside the junction box.

[0040] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0041] Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0042] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A photovoltaic junction box, comprising a device body (1), characterized in that: One side of the device body (1) is provided with a first groove (2), the inner wall of the first groove (2) is provided with a plurality of second grooves (3), a connecting piece (4) is fixedly installed on the inner wall of the plurality of second grooves (3), a first wire (5) is fixedly installed on one side of the connecting piece (4), and a first insulating sleeve (6) is fixedly installed on the outer wall of the first wire (5); A connecting conductor (7) is arranged on the outer wall of the first wire (5), a plurality of arc-shaped conductive plates (8) are fixedly installed on the inner wall of the connecting conductor (7), a plurality of carbon tubes (9) are fixedly installed on the inner wall of the plurality of arc-shaped conductive plates (8), a plurality of carbon rings (10) are rotatably installed on the outer wall of the plurality of carbon tubes (9), the carbon ring (10) is rotatably connected with the first wire (5), a plurality of third grooves (11) are opened on the outer wall of the connecting conductor (7), a first guide rod (12) is fixedly installed on the inner wall of the plurality of third grooves (11), and a rubber block (13) is fixedly installed on the outer wall of the plurality of first guide rods (12); One end of the rubber block (13) is slidably installed with a plurality of second insulating sleeves (14), a fourth groove (15) is opened at one end of the plurality of second insulating sleeves (14), a second guide rod (16) is slidably installed on the inner wall of the fourth groove (15), the second guide rod (16) is fixedly connected with the first guide rod (12), a slide rod (17) is fixedly installed at one end of the second insulating sleeve (14), the slide rod (17) is slidably installed with the rubber block (13), a spring (18) is arranged on the outer wall of the slide rod (17), a plurality of fifth grooves (19) are opened on one side of the device body (1), a plurality of sixth grooves (20) are opened on the inner wall of the plurality of fifth grooves (19), a fixing rod (21) is fixedly installed on the inner wall of the plurality of sixth grooves (20), a fixing piece (22) is slidably installed on the outer wall of the fixing rod (21), a first wiring piece (23) is fixedly installed on the inner wall of the fixing piece (22), and the first wiring piece (23) is fixedly connected with the second guide rod (16); A plurality of wiring blocks (24) are fixedly installed on the inner wall of the first wiring piece (23), the first wiring piece (23) is fixedly connected with the second guide rod (16), a third wire (25) is fixedly installed at one end of the first wiring piece (23), and the third wire (25) is fixedly connected with the first wiring piece (23); A plurality of protection plates (26) are fixedly installed on the inner wall of the first wiring piece (23), a second wiring piece (27) is fixedly installed on the outer wall of the first wiring piece (23), and a movable piece (28) is rotatably installed on the inner wall of the second wiring piece (27); An external wire (29) is fixedly installed on the outer wall of the movable piece (28), a third insulating sleeve (30) is arranged on the outer wall of the external wire (29), and the third insulating sleeve (30) is fixedly connected with the movable piece (28); On one side of the device body (1), a seventh groove (31) is formed, and a plurality of eighth grooves (32) are formed in the inner wall of the seventh groove (31). A hook (33) is slidably mounted on the inner walls of the plurality of eighth grooves (32); One end of the hook (33) is fixedly connected to a first rubber rod (34), a limiting ring (35) is fixedly mounted on the outer wall of the first rubber rod (34), and a plurality of sliding blocks (36) are slidably mounted on the inner wall of the seventh groove (31); A second rubber rod (37) is slidably mounted on the outer wall of the first rubber rod (34). The second rubber rod (37) is fixedly connected to the sliding block (36), and a mounting member (38) is fixedly mounted on one end of the sliding block (36); By pulling the outer side of the first wiring member (23) to move externally, and at the same time driving the second insulating sleeve (14) to move towards the same side through the second guide rod (16), so that the second insulating sleeve (14) squeezes the spring (18) to move towards the same side. At the same time, the carbon ring (10) rotates on the outer wall of the first wire (5); When the force application ends, the spring (18) drives (17) to slide inwards, so that the second guide rod (16) drives the first wiring member (23) and the fixing member (22) to slide inwards on the outer wall of the fixing rod (21). At the same time, the second insulating sleeve (14) slides inwards at one end of the rubber block (13).

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