Rotatable cable outlet photovoltaic junction box structure for photovoltaic tracking support

Abstract

The invention discloses a rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking support. The rotatable cable outlet photovoltaic junction box structure comprises a shell, a retaining assembly and an electric connection assembly. A retaining seat, a plurality of retaining pieces, a plurality of fixed pieces and a plurality of movable pieces are arranged in the retaining assembly, and the electric connection assembly comprises a first conductive piece and a second conductive piece. According to the rotatable cable outlet photovoltaic junction box structure for the photovoltaic tracking support, fixation of the cable position and electric connection of conductors in the cable are realized in a direct insertion mode, rapid construction operation of constructors can be facilitated, it can be guaranteed that when the cable is twisted in the later period, the cable is rotated, and the cable is prevented from being damaged. According to the invention, the holding assembly on the cable rotates in the insertion hole, and the conductor is not affected by the first conductive member and the second conductive member, so that the position of the cable is ensured, rapid installation and connection of the cable are realized, stable power transmission is realized, and the cable can be adjusted when distorted in the later period.

Description

Technical Field

[0001] This invention relates to photovoltaic cable wiring technology, and more particularly to a rotatable cable outlet photovoltaic junction box structure for photovoltaic tracking brackets. Background Technology

[0002] A photovoltaic (PV) power generation system is a power generation system that uses the photovoltaic effect of semiconductor materials to convert solar radiation energy into electrical energy. The energy source for PV power generation systems is the inexhaustible solar energy, making it a clean, safe, and renewable energy source. The PV power generation process does not pollute the environment or damage the ecosystem.

[0003] After a photovoltaic power generation system generates electricity, the power needs to be transmitted. When connecting the cables on the photovoltaic panels to power transmission stations, power transfer stations, and power control switches, it is necessary to maintain the position of the cables. After all the cables are laid, some twisting is inevitable. The cables need to be rotated to ensure that the position and angle of the cables are appropriate, so as to avoid affecting the cables during power transmission. At the same time, there is also the possibility that the cable sheath may crack due to prolonged twisting. It is necessary to twist the cables in time to ensure that the position and angle of the cables meet the standards. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes a rotatable cable outlet photovoltaic junction box structure for photovoltaic tracking brackets.

[0005] A rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket, comprising: A housing, wherein the housing is provided with an insertion hole; A retaining assembly is provided in the insertion hole. The retaining assembly includes a retaining seat and multiple retaining members, multiple fixing members, and multiple movable members disposed on the retaining seat. One end of the retaining member is bolted to the outer wall of the retaining seat. The fixing member is disposed on the outer wall of the retaining member. The movable member is disposed in the middle of the fixing member. The movable member restricts the position of the other end of the retaining member so that the other end of the retaining member passes through the insertion hole. and a mounting base disposed inside the junction box, wherein the mounting base is provided with an electrical connection assembly, the electrical connection assembly comprising: A first conductive element is mounted on a fixed base, and a first elastic region is formed in the middle of the first conductive element. A second conductive member cooperates with the first conductive member. One end of the second conductive member is disposed inside the first elastic region, and the other end of the second conductive member forms a second elastic region. When the second conductive member is pushed by force, it is kept within and limited to the first elastic region. The retaining assembly secures the cable to the middle of the retaining assembly via the bolt. The cable passes through the insertion hole into the second elastic region and pushes the second conductive member to move within the first elastic region. The first conductive member pushes the second conductive member to clamp the cable within the second elastic region.

[0006] In this invention, the retaining seat is composed of a cylinder and a pressure plate. A through hole for a cable to pass through is formed in the middle of the cylinder, and a fixing protrusion is provided on the pressure plate.

[0007] In this invention, a fixed region is formed in the middle of the fixed protrusion, a limiting protrusion is provided on the inner wall of the fixed region, a sealing ring is provided in the fixed region, the sealing ring is composed of an mounting part and a sealing part, the mounting part is provided with a limiting recess that mates with the limiting protrusion, and a sealing region is formed between the sealing part and the mounting part.

[0008] In this invention, the retaining member consists of a sheet and a limiting body. The height of the sheet is less than the height of the limiting body. One end of the sheet is a fixed end and the other end is a free end. The limiting body is located at the free end.

[0009] In this invention, the movable component consists of a horizontal segment and a vertical segment, and the vertical segment forms a retaining area between itself and the outer wall of the cylinder.

[0010] In this invention, the middle of the fixing member forms a sliding groove that mates with the vertical section and an opening groove that communicates with the sliding groove, the width of the opening groove being smaller than the width of the sliding groove.

[0011] In this invention, the lower end of the opening groove forms a limiting notch, and the transverse segment is located within the limiting notch.

[0012] In this invention, the first conductive element is composed of a mounting plate and symmetrically arranged elastic plates. The height between the elastic plates and the side of the elastic plates away from the mounting plate is H1, and the height of the mounting plate is H2, where H1 < H2.

[0013] In this invention, the elastic plate is provided with a punching hole, and an elastic arm is provided in the punching hole facing the first elastic region, and a blocking block is provided on the elastic arm.

[0014] In this invention, the second conductive element consists of a push plate and symmetrically arranged deformation plates. The deformation plates are provided with strip grooves that cooperate with the blocking block. A pressure plate is provided at the end of the deformation plate away from the push plate. The push plate is provided with a conical body disposed in the second elastic region.

[0015] The rotatable cable outlet photovoltaic junction box structure for photovoltaic tracking brackets of the present invention has the following beneficial effects: This rotatable cable outlet photovoltaic junction box structure for photovoltaic tracking brackets uses a direct insertion method to fix the cable position and electrically connect the conductors inside the cable. This not only facilitates quick construction operations for construction personnel, but also ensures that if the cable is twisted later, it can be rotated so that the retaining component on the cable rotates within the insertion hole, and the conductors are not affected by the first and second conductive components. While ensuring the cable position, it achieves quick installation and connection of the cable, realizes stable power transmission, and allows for adjustment when the cable is twisted later. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to the present invention. Figure 2 for Figure 1 Exploded view; Figure 3 for Figure 2 A schematic diagram of the cable and retaining component structure; Figure 4 for Figure 3 Exploded view of the retaining component structure in the image; Figure 5 This is a cross-sectional view of the retainer and sealing ring structure in this invention; Figure 6 for Figure 4 A schematic diagram of the retaining, fixing, and moving parts in the structure; Figure 7 for Figure 6 A schematic diagram of the structure in another direction; Figure 8 This is a schematic diagram showing the structural installation state of the retaining seat, retaining member, fixing member, and moving member in this invention; Figure 9 for Figure 8 Another installation status diagram; Figure 10 This is a schematic diagram of the installation state of the housing and retaining assembly structure in this invention; Figure 11 for Figure 2 A schematic diagram of the first conductive component in the diagram; Figure 12 for Figure 2 A schematic diagram of the structure of the second conductive component; Figure 13 This is a schematic diagram of another embodiment of the present invention; Figure 14 for Figure 13 Exploded view of the cable, conductive base, and third conductive component structure in the image; Figure 15 for Figure 14 A schematic diagram of the conductive base structure in the diagram; Figure 16 for Figure 14 A schematic diagram of the third conductive component in the diagram; Figure 17 for Figure 16 A schematic diagram of the structure from another direction.

[0017] In the diagram: 1. Housing; 2. Retaining assembly; 3. Electrical connection assembly; 4. Cable; 5. Conductor; 6. Second conductive element; 7. First conductive element; 8. Cable; 9. Insertion hole; 10. Retaining seat; 11. Retaining element; 12. Fixing element; 13. Moving element; 14. Bolt; 15. Cylinder; 16. Pressure plate; 17. Through hole; 18. Fixing protrusion; 19. Fixing area; 20. Limiting protrusion; 21. Sealing ring; 22. Mounting part; 23. Sealing part; 24. Limiting recess; 25. Sealing area; 26. Plate; 27. Limiting body; 28. Fixed end; 29. ​​Free end; 30. Horizontal section; 31. Vertical section; 32. Retaining area; 33. Sliding groove; 34. Opening groove; 35. Limiting notch; 36. First contact surface; 37. Second contact surface; 38. Fixing seat. 38. Pushing area; 39. First elastic area; 40. Mounting plate; 41. Elastic plate; 42. Fixing screw; 43. Punching hole; 44. Elastic arm; 45. Blocking block; 46. Second elastic area; 47. Pushing plate; 48. Deformation plate; 49. Strip groove; 50. Pressure plate; 51. Conical body; 52. Third elastic area; 53. Horizontal section; 54. First guide section; 55. Second guide section; 56. First wrapping layer; 57. Second wrapping layer; 58. Conductive seat; 59. Third conductive component; 60. Fastening screw; 61. Wiring hole; 62. First stepped hole; 63. Stepped surface; 64. Second stepped hole; 65. Fixing plate; 66. First conical part; 67. Second conical part; 68. Conductive arm; 69. Contact plate; 70. Guide slope; 71. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figures 1 to 17 As shown, this invention relates to a rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket, comprising a housing 1, a retaining component 2, and an electrical connection component 3. The housing 1 is part of the junction box; for ease of showing the internal structure of the junction box, only a portion of the housing 1 is shown in the accompanying drawings. The retaining component 2 is used to limit the position of the cable 4, ensuring that the conductor 5 in the cable 4 remains in a limited position, and enabling the conductor 5 to push the second conductive element 6, thereby limiting the second conductive element 6 to the first conductive element 7, thus achieving an electrical connection between the conductor 5 and the cable 8.

[0020] Meanwhile, since the retaining component 2 is fixed to the outside of the cable 4, it can rotate with the cable 4 without being blocked or restricted by the insertion hole 9 on the housing 1. Furthermore, the electrical connection component 3 does not restrict the position of the conductor 5, allowing the conductor 5 to achieve electrical connection with the first conductive element 7 and the second conductive element 6 when the cable 4 rotates, ensuring the stability of the electrical connection between the cable 4 and the cable 8.

[0021] The housing 1 is provided with an insertion hole 9, which is used to restrict the position of the cable 4 and hold the component 2.

[0022] Example 1 The retaining component 2 is positioned inside the insertion hole 9, and is confined within the insertion hole 9 by direct insertion.

[0023] The retaining assembly 2 includes a retaining seat 10 and multiple retaining members 11, multiple fixing members 12, and multiple movable members 13 disposed on the retaining seat 10. The retaining members 11, fixing members 12, and movable members 13 are evenly distributed on the outer wall of the retaining seat 10. One end of the retaining member 11 is mounted on the outer wall of the retaining seat 10 by a bolt 14. The fixing member 12 is disposed on the outer wall of the retaining member 11. The movable member 13 is disposed in the middle of the fixing member 12, and the movable member 13 restricts the position of the other end of the retaining member 11, so that the other end of the retaining member 11 passes through the insertion hole 9.

[0024] The outer diameter of the fastener 12 matches the inner diameter of the insertion hole 9, and the fastener 12 can restrict the position of the retaining component 2 so that it will not move within the insertion hole 9.

[0025] The retainer 10 consists of a cylinder 15 and a pressure plate 16. A through hole 17 for the cable 4 to pass through is formed in the middle of the cylinder 15. A fixing protrusion 18 is provided on the pressure plate 16. A fixing area 19 is formed in the middle of the fixing protrusion 18. A limiting protrusion 20 is provided on the inner wall of the fixing area 19.

[0026] A sealing ring 21 is provided within the fixed area 19. The sealing ring 21 consists of a mounting part 22 and a sealing part 23. The mounting part 22 has a limiting recess 24 that mates with the limiting protrusion 20. A sealing area 25 is formed between the sealing part 23 and the mounting part 22. The sealing ring 21 is made of rubber material and can deform under force. The mounting part 22 is positioned within the fixed area 19, causing the sealing ring 21 to move along with the pressure plate 16. This allows the sealing ring 21 to be pressed against the housing 1 by the pressure plate 16, achieving a seal, preventing dust and water from entering the junction box.

[0027] The retainer 11 consists of a sheet 26 and a limiting body 27. The height of the sheet 26 is less than the height of the limiting body 27. One end of the sheet 26 is a fixed end 28 and the other end is a free end 29. The limiting body 27 is located at one end of the free end 29.

[0028] The movable part 13 consists of a horizontal section 30 and a vertical section 31, and a retaining area 32 is formed between the vertical section 31 and the outer wall of the cylinder 15. The fixed part 12 has a sliding groove 33 that mates with the vertical section 31 and an opening groove 34 that communicates with the sliding groove 33 in the middle, and the width of the opening groove 34 is smaller than the width of the sliding groove 33.

[0029] The lower end of the opening groove 34 forms a limiting notch 35, and the transverse segment 30 is located within the limiting notch 35. The opening groove 34 is used for the sliding of the transverse segment 30 and limits the sliding distance of the transverse segment 30.

[0030] A first contact surface 36 is formed at the lower end of the sheet 26, and a second contact surface 37 is formed on the fixing member 12. When the first contact surface 36 and the second contact surface 37 are in contact, the movable member 13 restricts the position of the sheet 26, so that the sheet 26 is pressed against the outer wall of the cylinder 15. At this time, the limiting body 27 can pass through the insertion hole 9.

[0031] When the retaining component 2 is inserted into the insertion hole 9, since the diameter of the horizontal segment 30 is larger than the diameter of the insertion hole 9, the housing 1 pushes the horizontal segment 30, causing the vertical segment 31 to slide in the sliding groove 33. This causes the vertical segment 31 to move downward, thereby removing the restriction on the position of the piece 26. Since one end of the piece 26 is restricted, and the piece 26 is in a straight state before installation, it can unfold under its stored elastic potential energy when the vertical segment 31 is not restricting the position of the piece 26. The maximum unfolding distance is greater than the diameter of the insertion hole 9, thereby causing the limiting body 27 to contact the inner wall of the housing 1, thus restricting the position of the entire retaining component 2 and the position of the cable 4.

[0032] Since the plate 26 is not substantially restricted, the retaining component 2 can rotate within the insertion hole 9, but it cannot be freed from the restriction of the insertion hole 9.

[0033] When the sealing ring 21 is squeezed by the pressure plate 16, the sealing area 25 will disappear. And if... Figure 10 As shown, the sealing area 25 has not disappeared at this time; it is only for demonstration purposes. In actual installation, after the retaining component 2 is installed into the insertion hole 9, the sealing area 25 will disappear, thereby maintaining the elastic potential energy of the sealing ring 21, which will fit the housing 1 and achieve a better sealing effect.

[0034] The mounting base 38 is disposed inside the junction box, and an electrical connection assembly 3 is provided on the mounting base 38. The electrical connection assembly 3 includes a first conductive element 7 and a second conductive element 6. The first conductive element 7 is fixed to the mounting base 38, while the second conductive element 6 is confined inside the first conductive element 7. The mounting base 38 is made of insulating material.

[0035] The first conductive element 7 is mounted on the fixed base 38, and a first elastic region 40 is formed in the middle of the first conductive element 7. The first conductive element 7 consists of a mounting plate 41 and symmetrically arranged elastic plates 42. The height between the elastic plates 42 and the side of the elastic plates 42 away from the mounting plate 41 is H1, and the height of the mounting plate 41 is H2, where H1 < H2.

[0036] The first conductive element 7 is designed with one end higher than the other. The end closer to the mounting plate 41 is higher, and the end farther from the mounting plate 41 is lower, making it easier to place the cable 8 at the higher end. A fixing screw 43 is provided on the first conductive element 7 to confine the cable 8 inserted into the first elastic region 40. Because the cable 8 is close to the mounting plate 41, its position is relatively low, and the fixing screw 43 can tighten and fix the cable 8.

[0037] Mounting plate 41 can be extended to secure it to mounting base 38.

[0038] A punching hole 44 is provided on the elastic plate 42, and an elastic arm 45 is provided in the punching hole 44 facing the first elastic region 40. A blocking block 46 is provided on the elastic arm 45. The blocking block 46 can be used to limit the position of the second conductive element 6, so that it will not detach from the first elastic region 40.

[0039] The second conductive element 6 is connected to the first conductive element 7. One end of the second conductive element 6 is disposed inside the first elastic region 40, and the other end of the second conductive element 6 forms the second elastic region 47. When the second conductive element 6 is pushed by force, it is kept within the first elastic region 40 and limited.

[0040] The second conductive element 6 consists of a push plate 48 and symmetrically arranged deformation plates 49. The deformation plates 49 are provided with strip grooves 50 that cooperate with the blocking block 46. A pressure plate 51 is provided at the end of the deformation plate 49 away from the push plate 48. The push plate 48 is provided with a conical body 52 disposed in the second elastic region 47. A push region 39 is formed between the pressure plates 51 and the pressure plates 51.

[0041] A third elastic region 53 is formed between the deformation plate 49 and the pressure plate 51. When the deformation plate 49 moves into the first elastic region 40, it gradually contracts into the second elastic region 47, pushing the pressure plate 51 closer to the conductor 5 of the cable 4 to achieve electrical connection. Furthermore, the cone-shaped body 52 can be inserted into the middle of the conductor 5, pushing the conductor 5 away while increasing the contact area.

[0042] The deformation plate 49 consists of a horizontal section 54, a first guide section 55, and a second guide section 56. The first guide section 55 and the second guide section 56 are inclined. The horizontal section 54 can be limited by the elastic plate 42. The blocking block 46 is placed in the strip groove 50 to prevent the second conductive element 6 from being displaced in the first elastic region 40.

[0043] The retaining component 2 fixes the cable 4 to the middle of the retaining component 2 by bolt 14. The cable 4 passes through the insertion hole 9 and enters the second elastic region 47, and pushes the second conductive member 6 to move within the first elastic region 40. The retaining first conductive member 7 pushes the second conductive member 6 to clamp the cable 4 in the second elastic region 47.

[0044] The cable 4 consists of a first sheath 57, a second sheath 58, and a conductor 5, which is composed of multiple copper wires. The bolt 14 passes through the retainer 11, the cylinder 15, and the first sheath 57, and stops inside the second sheath 58, but does not penetrate the second sheath 58, thereby fixing the cable 4 to the middle of the retaining assembly 2.

[0045] Example 2 like Figure 13 As shown, the assembly includes a housing 1, a retaining component 2, a cable 4, a conductive base 59, and a third conductive element 60. The conductive base 59 is disposed inside the junction box and has a fastening screw 61 and a wiring hole 62 for fixing the cable 8. The conductive base 59 also has a first stepped hole 63, a stepped surface 64, and a second stepped hole 65.

[0046] The third conductive element 60 consists of a fixed plate 66, a first conical part 67, a second conical part 68, and multiple conductive arms 69. The middle of the first conical part 67 and the second conical part 68 is hollowed out to facilitate the insertion of the conductive body 5 and to guide the conductive body 5.

[0047] A first tapered portion 67 is disposed within a first stepped hole 63, and a second tapered portion 68 contacts a stepped surface 64. A conductive arm 69 is disposed within a second stepped hole 65, with multiple conductive arms 69 being tapered, while the second stepped hole 65 is cylindrical. When the conductor 5 is inserted into the middle position of the conductive arm 69, the conductor 5 pushes the conductive arm 69 away, causing it to deform.

[0048] Meanwhile, a contact plate 70 is provided on the conductive arm 69, and a guide slope 71 is provided on the contact plate 70. The guide slope 71 can separate the conductor 5 so that it can be inserted into the middle of the conductor 5 to achieve electrical connection.

[0049] When the third conductive element 60 contacts the conductive body 5, it can limit the position of the cable 4. The third conductive element 60 can be connected to one end of the cable 8, and the other end of the cable 8 can be connected to the second conductive element 6 and the first conductive element 7. Therefore, one end of the cable 8 that needs to be adjusted can be kept stationary, while the other end can rotate, thereby adjusting the twisted part of the cable 4 and allowing one end of the cable 4 to rotate.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket, characterized in that, include: A housing, wherein the housing is provided with an insertion hole; A retaining assembly is provided in the insertion hole. The retaining assembly includes a retaining seat and multiple retaining members, multiple fixing members, and multiple movable members disposed on the retaining seat. One end of the retaining member is bolted to the outer wall of the retaining seat. The fixing member is disposed on the outer wall of the retaining member. The movable member is disposed in the middle of the fixing member. The movable member restricts the position of the other end of the retaining member so that the other end of the retaining member passes through the insertion hole. and a mounting base disposed inside the junction box, wherein the mounting base is provided with an electrical connection assembly, the electrical connection assembly comprising: A first conductive element is mounted on a fixed base, and a first elastic region is formed in the middle of the first conductive element. A second conductive member cooperates with the first conductive member. One end of the second conductive member is disposed inside the first elastic region, and the other end of the second conductive member forms a second elastic region. When the second conductive member is pushed by force, it is kept within and limited to the first elastic region. The retaining assembly secures the cable to the middle of the retaining assembly via the bolt. The cable passes through the insertion hole into the second elastic region and pushes the second conductive member to move within the first elastic region. The first conductive member pushes the second conductive member to clamp the cable within the second elastic region.

2. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 1, characterized in that, The retainer consists of a cylinder and a pressure plate. A through hole for a cable to pass through is formed in the middle of the cylinder, and a fixing protrusion is provided on the pressure plate.

3. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 2, characterized in that, A fixed area is formed in the middle of the fixed protrusion. A limiting protrusion is provided on the inner wall of the fixed area. A sealing ring is provided in the fixed area. The sealing ring is composed of an installation part and a sealing part. The installation part is provided with a limiting recess that mates with the limiting protrusion. A sealing area is formed between the sealing part and the installation part.

4. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 2, characterized in that, The retainer consists of a sheet and a limiting body. The height of the sheet is less than the height of the limiting body. One end of the sheet is a fixed end and the other end is a free end. The limiting body is located at the free end.

5. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 4, characterized in that, The movable component consists of a horizontal section and a vertical section, and the vertical section forms a retaining area with the outer wall of the cylinder.

6. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 5, characterized in that, The fixing member has a sliding groove in the middle that mates with the vertical section and an opening groove that communicates with the sliding groove. The width of the opening groove is smaller than the width of the sliding groove.

7. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 6, characterized in that, The lower end of the opening groove forms a limiting notch, and the transverse segment is located within the limiting notch.

8. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 1, characterized in that, The first conductive element consists of a mounting plate and symmetrically arranged elastic plates. The height between the elastic plates on the side away from the mounting plate is H1, and the height of the mounting plate is H2, where H1 < H2.

9. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 8, characterized in that, The elastic plate is provided with a punching hole, and an elastic arm is provided in the punching hole facing the first elastic region. A blocking block is provided on the elastic arm.

10. The rotatable cable outlet photovoltaic junction box structure for a photovoltaic tracking bracket according to claim 9, characterized in that, The second conductive element consists of a push plate and symmetrically arranged deformation plates. The deformation plates are provided with strip grooves that cooperate with the blocking block. The end of the deformation plate away from the push plate is provided with a pressure plate. The push plate is provided with a cone-shaped body disposed in the second elastic region.

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