Photovoltaic junction box
By using a combination of rubber strips and arc-shaped pressure plates to fix the wiring harness in the photovoltaic junction box, and setting a sealing ring and snap between the cover plate and the box body, the problem of unfixed junction box is solved, improving stability and safety and pass through the filter to prevent dust from entering to ensure the normal operation of the circuit.
Patent Information
- Application Number
- CN202323478790.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The existing photovoltaic junction boxes are not firmly fixed at the cables and joints, which are prone to loosening or falling off due to external force, which may cause short circuits.
A photovoltaic junction box structure including a box body, a cover assembly and a restraining assembly is designed. The combination of rubber strips and arc-shaped pressure plates can be used to achieve extrusion and fixation of the wire harness, and the stability of the cover is ensured through sealing rings and snaps. At the same time, install a filter on the bottom of the box to filter dust and prevent short circuits.
It effectively improves the stability of the wiring harness, reduces the risk of joints falling off due to external force pulling, enhances the safety of the device, and keeps the interior clean through the filter to prevent dust from entering, and ensures that the circuit works normally.
Smart Images
Figure CN222147558U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic junction box structures, in particular to a 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] However, the existing photovoltaic junction box is effectively fixed to the cable socket. When the cable is pulled by external force, the cable joint is directly stressed, which can easily make the joint loose, resulting in an accidental short circuit. In severe cases, the joint is easily pulled off by external force. Therefore, a photovoltaic junction box is needed to solve the above problem. Utility Model Content
[0004] The purpose of the utility model is to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A photovoltaic junction box comprises a junction box accessory, the junction box accessory comprises a box body, a cover plate assembly is buckled and installed on the top of the box body, the cover plate assembly comprises a top cover, two lifting rods are symmetrically connected to the top of the top cover, a ring groove is arranged at the bottom of the top cover, the top cover ring groove and the box body are plugged and docked with each other, a constraint assembly is arranged on the front side of the box body, the constraint assembly comprises a wire bobbin, the wire bobbin is inserted into the inside of the box body through a through hole, a threaded swivel is inserted into the right side of the wire bobbin through a threaded hole, and an arc pressure plate is rotatably installed on the end of the threaded swivel, two clamping plates are symmetrically connected to the inner wall of the box body, and the clamping plates are inserted into the inside of the wire bobbin through grooves.
[0007] Preferably, a rubber strip is connected to the inner wall of the wire barrel at a position corresponding to the arc-shaped pressure plate, and the rubber strip is fixed to the inner wall of the wire barrel. The rubber strip abuts against the outside of the wire harness, thereby conveniently squeezing the side of the wire harness to achieve a pre-fixing effect.
[0008] Preferably, a sealing ring is inserted into the inner wall of the top cover ring groove, and the bottom end of the sealing ring abuts against the surface of the box body, and the top end of the box body can abut against the surface of the sealing ring to ensure the tightness between the box body and the top cover.
[0009] Preferably, a frame strip end is provided at the top of the sealing ring, and the frame strip end is clamped in the buckle, and the top of the buckle is connected and fixed to the inner wall of the top cover ring groove, and the sealing ring is limited and fixed by the buckle to ensure the stability of the sealing ring embedded in the top cover ring groove.
[0010] Preferably, docking components are provided on the left and right sides of the top cover, and the docking components include plug-in plates, which are inserted into the plug-in frame. The plug-in frame is connected and fixed to the box body by bolts, and the plug-in plates are inserted into the plug-in frame to ensure the docking stability between the box body and the top cover.
[0011] Preferably, two rubber blocks are symmetrically arranged on the left and right sides of the bottom of the plugboard, and the rubber blocks abut against the outside of the bottom of the plugframe. The rubber blocks on the outside of the plugboard abut against the bottom of the plugframe to ensure the stability of the docking between the plugboard and the plugframe.
[0012] Preferably, a filter is embedded in the bottom of the box body, and a hollow plate is arranged below the filter. The hollow plate is embedded in the bottom of the box body through a groove, and the corners of the hollow plate are fixed to the box body by locking bolts. Dust can be filtered through the filter to prevent dust from entering the box body, thereby preventing short circuit and confusion of the circuit.
[0013] The utility model has at least the following beneficial effects:
[0014] 1. By setting a constraint component, the wire harness can be constrained and fixed. Compared with the traditional structure, the device inserts the wire harness into the inside of the wire tube, so that the rubber strip squeezes the side of the wire harness. At the same time, the threaded shaft rotates and moves to push the arc pressure plate. The arc pressure plate moves to squeeze and buckle the outside of the wire harness, ensuring the stability of the wire harness docking, reducing the probability of the wire harness being pulled by external force and falling off directly at the joint, and improving the safety of the device when in use.
[0015] 2. By setting up the junction box accessories, dust prevention can be achieved. The device places the filter at the bottom of the box body, so that the hollow plate is buckled on the inner side of the bottom of the box body, and then the filter can be squeezed and limited. The locking bolt can penetrate the hollow plate and then be inserted into the inside of the box body for locking and fixing. At this time, the filter can intercept the magnetically adsorbed dust at the bottom of the box body, thereby improving the cleanliness of the inside of the box body. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic diagram of the external structure of a photovoltaic junction box proposed by the utility model;
[0018] Figure 2 This is a schematic diagram of the external disassembled structure of a photovoltaic junction box proposed by the utility model;
[0019] Figure 3 This is a schematic diagram of a three-dimensional explosion structure of a restraining component in a photovoltaic junction box proposed by the utility model;
[0020] Figure 4 This is a three-dimensional disassembled structural schematic diagram of a cover plate assembly in a photovoltaic junction box proposed by the utility model;
[0021] Figure 5 The present invention is a schematic diagram of the three-dimensional disassembled structure of a junction box accessory in a photovoltaic junction box.
[0022] In the figure: 1. Junction box accessories; 11. Box body; 12. Hollow plate; 13. Locking bolt; 14. Filter; 2. Constraint assembly; 21. Wire drum; 22. Cardan; 23. Rubber strip; 24. Threaded swivel; 25. Arc pressure plate; 3. Cover assembly; 31. Top cover; 32. Buckle; 33. Sealing ring; 34. Lifting rod; 4. Docking assembly; 41. Plug plate; 42. Plug frame. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0024] Reference Figure 1-5 A photovoltaic junction box includes a junction box accessory 1, which includes a box body 11. A cover assembly 3 is buckled and installed on the top of the box body 11. The cover assembly 3 includes a top cover 31. Two lifting rods 34 are symmetrically connected to the top of the top cover 31. A ring groove is provided at the bottom of the top cover 31. The ring groove of the top cover 31 and the box body 11 are plugged and docked with each other. A constraint assembly 2 is provided on the front of the box body 11. The constraint assembly 2 includes a wire drum 21. The wire drum 21 is inserted into the box body 11 through a through hole. A threaded shaft 24 is inserted into the right side of the wire drum 21 through a threaded hole, and an arc-shaped pressing plate 25 is rotatably installed at the end of the threaded shaft 24. Two clamping plates 22 are symmetrically connected to the inner wall of the box body 11, and the clamping plate 22 is inserted into the wire drum 21 through a groove.
[0025] A rubber strip 23 is connected to the inner wall of the wire barrel 21 at a position corresponding to the arc-shaped pressing plate 25 , and the rubber strip 23 is fixed to the inner wall of the wire barrel 21 .
[0026] A sealing ring 33 is inserted into the inner wall of the annular groove of the top cover 31 , and the bottom end of the sealing ring 33 contacts the surface of the box body 11 .
[0027] A frame strip end is provided at the top end of the sealing ring 33 , and the frame strip end is clamped in the buckle 32 , and the top end of the buckle 32 is connected and fixed to the inner wall of the ring groove of the top cover 31 .
[0028] The top cover 31 is provided with docking components 4 on both sides thereof. The docking components 4 include plug-in plates 41 . The plug-in plates 41 are inserted through the inside of the plug-in frame 42 . The plug-in frame 42 is connected and fixed to the box body 11 by bolts.
[0029] Two rubber blocks are symmetrically arranged on the left and right sides of the bottom end of the plug board 41 , and the rubber blocks abut against the outer side of the bottom end of the plug frame 42 .
[0030] A filter screen 14 is embedded inside the bottom of the box body 11, and a hollow plate 12 is disposed below the filter screen 14. The hollow plate 12 is embedded in the bottom of the box body 11 through a groove, and the corners of the hollow plate 12 are fixed to the box body 11 by locking bolts 13.
[0031] When the wire harness is inserted into the wire tube 21, the rubber strip 23 can contact the outside of the wire harness, which is convenient for squeezing the side of the wire harness to achieve a pre-fixing effect. The rubber strip 23 cooperates with the arc-shaped pressing plate 25 to facilitate fixing the wire harness. When the top cover 31 and the box body 11 are plugged into each other, the top of the box body 11 can contact the surface of the sealing ring 33 to ensure the tightness between the box body 11 and the top cover 31. When installing the sealing ring 33, the frame strip end of the sealing ring 33 is inserted into the buckle 32, and the sealing ring 33 can be limited and fixed by the buckle 32 to ensure the stability of the sealing ring 33 embedded in the ring groove of the top cover 31, so as to prevent the sealing ring 33 from falling off easily. During docking, the plug board 41 can be inserted into the plug frame 42 to ensure the docking stability of the box body 11 and the top cover 31, and prevent the top cover 31 from being easily separated from the box body 11. When the plug board 41 is inserted into the plug frame 42, the rubber block on the outside of the plug board 41 can be buckled at the bottom of the plug frame 42 to ensure the docking stability of the plug board 41 and the plug frame 42. The hollow design of the hollow plate 12 can facilitate heat dissipation. When the hollow plate 12 is buckled at the bottom of the box body 11, the filter 14 can be attached to the top surface of the hollow plate 12. Dust can be filtered through the filter 14 to prevent dust from entering the box body 11. Short circuit and confusion of the circuit can be prevented, thereby ensuring the normal operation of the internal joints of the box body 11 and improving work efficiency.
[0032] Working principle: According to the attached Figure 2 With attached Figure 4 As shown, after the wiring harness is connected, the sealing ring 33 can be buckled inside the buckle 32, so that the top cover 31 is buckled on the surface of the box body 11. At this time, the plug board 41 can be inserted into the plug frame 42, so that the rubber block on the outer side of the bottom end of the plug board 41 is buckled against the outer side of the bottom end of the plug frame 42, so as to ensure the stability of the connection between the top cover 31 and the box body 11;
[0033] Secondly, according to the attached Figure 3 and attached Figure 5As shown, when the wire harness is inserted into the inner part of the wire barrel 21 and the electrodes of the box body 11 are connected, the rubber strip 23 can be made to contact the outside of the wire harness. At this time, the threaded shaft 24 can be twisted to move the threaded shaft 24 in the threaded hole of the wire barrel 21, and the axial end of the threaded shaft 24 pushes the arc pressure plate 25 so that the arc pressure plate 25 can be squeezed and buckled on the outside of the wire harness, thereby fixing the wire harness to prevent the wire harness from being easily loosened and falling off during pulling. At the same time, the filter screen 14 can be buckled on the bottom end of the box body 11 so that the hollow plate 12 covers the bottom surface of the box body 11, and the hollow plate 12 is locked and fixed by locking bolts 13 on both sides to complete the operation.
[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A photovoltaic junction box, comprising a junction box accessory (1), It is characterized in that The junction box accessory (1) comprises a box body (11), a cover assembly (3) is buckled and installed on the top of the box body (11), the cover assembly (3) comprises a top cover (31), two lifting rods (34) are symmetrically connected to the top of the top cover (31), a ring groove is provided at the bottom of the top cover (31), the ring groove of the top cover (31) and the box body (11) are plugged and docked with each other, a constraint assembly (2) is arranged on the front of the box body (11), the constraint assembly (2) comprises a wire drum (21), the wire drum (21) is inserted into the box body (11) through a through hole, a threaded shaft (24) is inserted into the right side of the wire drum (21) through a threaded hole, and an arc-shaped pressure plate (25) is rotatably installed at the end of the threaded shaft (24), and two clamping plates (22) are symmetrically connected to the inner wall of the box body (11), and the clamping plate (22) is inserted into the wire drum (21) through a groove.
2. A photovoltaic junction box according to claim 1, It is characterized in that A rubber strip (23) is connected to the inner wall of the wire barrel (21) at a position corresponding to the arc-shaped pressing plate (25), and the rubber strip (23) is fixed to the inner wall of the wire barrel (21).
3. A photovoltaic junction box according to claim 1, It is characterized in that A sealing ring (33) is inserted into the inner wall of the annular groove of the top cover (31), and the bottom end of the sealing ring (33) contacts the surface of the box body (11).
4. A photovoltaic junction box according to claim 3, It is characterized in that The top end of the sealing ring (33) is provided with a frame strip end, and the frame strip is clamped inside the buckle (32), and the top end of the buckle (32) is connected and fixed to the inner wall of the ring groove of the top cover (31).
5. A photovoltaic junction box according to claim 1, It is characterized in that The top cover (31) is provided with docking components (4) on the left and right sides. The docking components (4) include an inserting plate (41). The inserting plate (41) is inserted through an inserting frame (42). The inserting frame (42) is connected and fixed to the box body (11) by bolts.
6. A photovoltaic junction box according to claim 5, It is characterized in that Two rubber blocks are symmetrically arranged on the left and right sides of the bottom end of the plug board (41), and the rubber blocks abut against the outer side of the bottom end of the plug frame (42).
7. A photovoltaic junction box according to claim 6, It is characterized in that A filter screen (14) is embedded in the bottom of the box body (11), and a hollow plate (12) is disposed below the filter screen (14) to abut against the bottom of the box body (11). The hollow plate (12) is embedded in the bottom of the box body (11) via a groove, and the corners of the hollow plate (12) are fixedly connected to the box body (11) via locking bolts (13).