Junction box
By designing the junction box, the gaps at the conductor connections are sealed using the inner shell and sealing structure, solving the problem of insufficient sealing in existing technologies and achieving good protection for conductor connections.
Patent Information
- Application Number
- CN202422386395.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing insulating tape at conductor joints has poor sealing performance, is prone to water seepage, and falls off during radial runout, resulting in insufficient protection.
The junction box structure includes an outer shell, an inner shell, a first sealing structure, and a second sealing structure. The inner shell is installed inside the outer shell, and the sealing structure seals the gap between the conductor and the through hole to form a sealed space to prevent water and debris from entering.
It improves the sealing performance of conductor connections, prevents water leakage and detachment, and provides good protection.
Smart Images
Figure CN223583773U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of wiring protection, especially relates to a junction box. BACKGROUND
[0002] Long distance signal transmission or power transmission needs to connect two adjacent conductors, the existing connection mode is to weld the connecting ends of two conductors together, and then wrap insulating tape at the welding position for insulation treatment.
[0003] However, the insulating tape wrapped at the welding position of two conductors has poor sealing performance, and water can easily penetrate from the outside to the welding position of the connecting ends of two conductors through the insulating tape, resulting in short circuit, and the insulating tape is also prone to damage during long-term use. In addition, if one of the two connected conductors is a soft conductor and the other is a hard conductor, the insulating tape is wrapped around the welding position of the soft conductor and the hard conductor, and the insulating tape is prone to fall off during radial jumping of the conductors, and the protection performance is poor. SUMMARY
[0004] The utility model solves the technical problem that the insulating tape wrapped at the welding position of two conductors has poor sealing performance in the existing conductor connection, and provides a junction box.
[0005] To solve the above technical problems, the utility model embodiment provides a junction box, which comprises a shell, an inner shell, a first sealing structure and a second sealing structure, the shell is provided with a mounting cavity, a first opening and a second opening communicated with the mounting cavity, the inner shell is installed in the mounting cavity, the inner shell is provided with a sealing cavity and a first perforation and a second perforation communicated with the sealing cavity, the first opening is used for the first conductor to enter the mounting cavity, the second opening is used for the second conductor to enter the mounting cavity, the first perforation is used for the first conductor to enter the sealing cavity, the second perforation is used for the second conductor to enter the sealing cavity, and the sealing cavity is used for accommodating the connecting position of the first conductor and the second conductor.
[0006] The first sealing structure is connected between the first opening and the first perforation, the first sealing structure is used for plugging the gap between the hole wall of the first perforation and the first conductor, the second sealing structure is connected between the second opening and the second perforation, and the second sealing structure is used for plugging the gap between the hole wall of the second perforation and the second conductor.
[0007] Optionally, the inner shell comprises oppositely arranged first and second shell bodies, the first shell body is provided with a first abutting surface on a side thereof facing the second shell body, the second shell body is provided with a second abutting surface on a side thereof facing the first shell body, the first abutting surface is provided with a first sealing groove, the first shell body is provided with a first and a second notches in communication with the first sealing groove, the second abutting surface is provided with a second sealing groove, and the second shell body is provided with a third and a fourth notches in communication with the second sealing groove.
[0008] The first abutting surface is in abutment with the second abutting surface, the first sealing groove and the second sealing groove are in conjunction to form the sealing cavity, the first notch and the third notch are in conjunction to form the first through hole, and the second notch and the fourth notch are in conjunction to form the second through hole.
[0009] Optionally, the first abutting surface is provided with a plug-in post, and the second abutting surface is provided with a plug-in hole, the plug-in post is in plug-in connection with the plug-in hole.
[0010] Optionally, the first sealing structure comprises a first sealing ring, the first sealing ring is provided with a first sealing hole through which the first conductor passes, the first sealing ring is in plug-in connection in the first opening, an outer periphery of the first sealing ring is in close contact with an inner cavity wall of the mounting cavity, and a side of the first sealing ring facing the inner shell is in abutment with a side of the inner shell facing the first opening.
[0011] Optionally, the first sealing structure further comprises a first end cover, the first end cover comprises a first blocking part and a first sleeving part connected in sequence, the first sleeving part is arranged around a periphery of the first blocking part, the first sleeving part is sleeved on the outer shell, an inner wall surface of the first sleeving part is connected with an outer peripheral surface of the outer shell, the first blocking part is in abutment with a side of the first sealing ring away from the inner shell, and the first blocking part is provided with a first port through which the first conductor passes.
[0012] Optionally, the first blocking part is provided with a first expansion opening extending along a length direction of the first conductor.
[0013] Optionally, the first sleeving part is provided with a first clamping hole, and an outer periphery of the outer shell close to the first opening is provided with a first clamping buckle, the first clamping buckle is in clamping connection with the first clamping hole.
[0014] Optionally, the second sealing structure comprises a second sealing ring, the second sealing ring is provided with a second sealing hole through which the second conductor passes, the second sealing ring is in plug-in connection in the second opening, an outer periphery of the second sealing ring is in close contact with an inner cavity wall of the mounting cavity, and a side of the second sealing ring facing the inner shell is in abutment with a side of the inner shell facing the second opening.
[0015] Optionally, the second sealing structure further comprises a second end cover, the second end cover comprises a second blocking part and a second sleeving part, the second sleeving part is arranged around the circumference of the second blocking part, the second sleeving part is sleeved on the outer shell, the inner wall surface of the second sleeving part is connected with the outer circumferential surface of the outer shell, the second blocking part abuts against the side of the second sealing ring away from the inner shell, and the second blocking part is provided with a second port for the second conductor to pass through.
[0016] Optionally, the second blocking part is provided with a second clamping hole, and the outer shell is provided with a second clamping buckle close to the second opening, the second clamping buckle is clamped with the second clamping hole.
[0017] Compared with the prior art, the inner shell is installed in the outer shell, the first sealing structure is arranged between the first opening and the first through hole, the gap between the outer circumference of the first conductor and the first through hole can be blocked, the second sealing structure is arranged between the second opening and the second through hole, the gap between the outer circumference of the second conductor and the second through hole can be blocked, so that the sealing cavity of the inner shell forms a sealed space, foreign matters and water are not easy to enter, the sealing performance is good, the connection part of the first conductor and the second conductor is installed in the sealed space, the connection part between the two conductors can be well protected, and the waterproof performance is good. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The utility model provides a junction box and the assembly schematic drawing of conductor of an embodiment;
[0019] Figure 2 The utility model discloses a junction box and the assembly schematic drawing of conductor of an embodiment; Figure 1 The utility model discloses a junction box and the assembly schematic drawing of conductor of an embodiment;
[0020] Figure 3 The utility model discloses a junction box and the assembly schematic drawing of conductor of an embodiment; Figure 2 The utility model discloses a junction box and the assembly schematic drawing of conductor of an embodiment;
[0021] Figure 4 The utility model discloses a junction box and the assembly schematic drawing of conductor of an embodiment; Figure 2 The utility model discloses a junction box and the assembly schematic drawing of conductor of an embodiment;
[0022] The reference numerals in the accompanying drawings are as follows: 1. First conductor; 2. Second conductor; 3. Outer shell; 4. First snap-fit; 5. Second snap-fit; 6. First sealing ring; 7. First sealing hole; 8. First end cap; 9. First fitting part; 10. First sealing part; 11. First port; 12. First expansion port; 13. First locking hole; 14. Inner shell; 15. First housing; 16. First abutment surface; 17. First sealing groove; 18. First notch; 19. Second notch; 20. Third snap-fit; 21. Second 22. Housing; 23. Second abutment surface; 24. Second sealing groove; 25. Third notch; 26. Fourth notch; 27. Insertion post; 28. Insertion hole; 29. Second sealing ring; 30. Second sealing hole; 31. Second fitting part; 32. Second sealing part; 33. Second port; 34. Second expansion port; 35. Second locking hole; 36. First opening; 37. Second opening; 38. Mounting cavity; 39. Locking groove; 40. First through hole; 41. Second through hole; 42. Sealing cavity. Detailed Implementation
[0023] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] like Figures 1 to 4 As shown, an embodiment of the present invention provides a junction box, including a housing 3, an inner housing 14, a first sealing structure, and a second sealing structure. The housing 3 is provided with a mounting cavity 38 and a first opening 36 and a second opening 37 communicating with the mounting cavity 38. The inner housing 14 is installed in the mounting cavity 38. The inner housing 14 is provided with a sealing cavity 42 and a first through hole 40 and a second through hole 41 communicating with the sealing cavity 42. The first opening 36 is used for a first conductor 1 to enter the mounting cavity 38, the second opening 37 is used for a second conductor 2 to enter the mounting cavity 38, the first through hole 40 is used for the first conductor 1 to enter the sealing cavity 42, and the second through hole 41 is used for the second conductor 2 to enter the sealing cavity 42. The sealing cavity 42 is used to accommodate the connection part of the first conductor 1 and the second conductor 2.
[0025] The first sealing structure is connected between the first opening 36 and the first through hole 40, and the first sealing structure is used to seal the gap between the hole wall of the first through hole 40 and the first conductor 1. The second sealing structure is connected between the second opening 37 and the second through hole 41, and the second sealing structure is used to seal the gap between the hole wall of the second through hole 41 and the second conductor 2.
[0026] Specifically, the shape of the sealing cavity 42 is designed according to the connecting position of the first conductor 1 and the second conductor 2, the inner shell 14 is installed in the outer shell 3, the first sealing structure is arranged between the first opening 36 and the first through hole 40, and the first sealing structure can block the gap between the outer periphery of the first conductor 1 and the first through hole 40; the second sealing structure is arranged between the second opening 37 and the second through hole 41, and the second sealing structure can block the gap between the outer periphery of the second conductor 2 and the second through hole 41, so that the sealing cavity 42 of the inner shell 14 forms a sealed space, and the connecting position of the first conductor 1 and the second conductor 2 is installed in the sealed space.
[0027] In an embodiment, the inner shell 14 includes a first shell 15 and a second shell 21 arranged oppositely, the first shell 15 is provided with a first abutting surface 16 on one side facing the second shell 21, the second shell 21 is provided with a second abutting surface 22 on one side facing the first shell 15, the first abutting surface 16 is provided with a first sealing groove 17, the first shell 15 is provided with a first notch 18 and a second notch 19 in communication with the first sealing groove 17, and the second abutting surface 22 is provided with a second sealing groove 23, and the second shell 21 is provided with a third notch 24 and a fourth notch 25 in communication with the second sealing groove 23.
[0028] The first abutting surface 16 and the second abutting surface 22 abut, the first sealing groove 17 and the second sealing groove 23 are matched to form the sealing cavity 42, the first notch 18 and the third notch 24 are matched to form the first through hole 40, and the second notch 19 and the fourth notch 25 are matched to form the second through hole 41.
[0029] Specifically, the inner shell 14 includes a first shell 15 and a second shell 21 that can be connected and disconnected, the first sealing groove 17 on the first shell 15 and the second sealing groove 23 on the second shell 21 are matched to form the sealing cavity 42, which is convenient for installing the connecting position of the first conductor 1 and the second conductor 2, and is convenient for disassembly and assembly, the first notch 18 and the third notch 24 are matched to form the first through hole 40, which is convenient for installing the first conductor 1 and enables the inner walls of the first notch 18 and the third notch 24 to clamp the outer periphery of the first conductor 1, the second notch 19 and the fourth notch 25 are matched to form the second through hole 41, which is convenient for installing the second conductor 2 and enables the inner walls of the second notch 19 and the fourth notch 25 to clamp the outer periphery of the second conductor 2, thereby improving the sealing performance of the sealing cavity 42.
[0030] In an embodiment, the first abutting surface 16 is provided with a plug-in column 26, the second abutting surface 22 is provided with a plug-in hole, and the plug-in column 26 is plugged into the plug-in hole 27.
[0031] Specifically, the first abutting surface 16 is provided with a plurality of insertion posts 26 and a plurality of insertion holes 27, and the second abutting surface 22 is provided with a plurality of insertion holes 27 and a plurality of insertion posts 26, the insertion posts 26 and the insertion holes 27 correspond to each other, and the insertion posts 26 and the insertion holes 27 are in interference fit, which can not only play a positioning role, but also facilitate disassembly and improve the connection strength between the first shell 15 and the second shell 21.
[0032] The outer periphery of the first shell 15 and the second shell 21 is provided with a third buckle 20, and the inner wall surface of the outer shell 3 is provided with a clamping groove 39 corresponding to the position of each third buckle 20. When the inner shell 14 is installed in the mounting cavity 38, the third buckle 20 is clamped in correspondence with the clamping groove 39 to realize the positioning and fixing of the inner shell 14, and avoid the inner shell 14 from shaking in the mounting cavity 38.
[0033] In an embodiment, the first sealing structure includes a first sealing ring 6, the first sealing ring 6 is provided with a first sealing hole 7 for the first conductor 1 to pass through, the first sealing ring 6 is inserted into the first opening 36, the outer periphery of the first sealing ring 6 is tightly fitted with the inner cavity wall of the mounting cavity 38, and the side of the first sealing ring 6 facing the inner shell 14 is in abutment with the side of the inner shell 14 facing the first opening 36.
[0034] Specifically, the first sealing ring 6 is inserted into the first opening 36 of the mounting cavity 38, the outer periphery of the first sealing ring 6 is in interference fit with the inner cavity wall of the mounting cavity 38, the hole wall of the first sealing hole 7 of the first sealing ring 6 is in interference fit with the outer periphery of the first conductor 1, and the side of the first sealing ring 6 facing the second opening 37 is in abutment with the first perforation 40 of the inner shell 14, thereby sealing the gap between the first perforation 40 and the first conductor 1. Using the first sealing ring 6 as the first sealing structure facilitates design and installation, and is conducive to reducing costs.
[0035] In an embodiment, the first sealing structure further includes a first end cover 8, the first end cover 8 includes a first sealing portion 10 and a first sleeving portion 9 connected to each other, the first sleeving portion 9 is arranged around the circumference of the first sealing portion 10, the first sleeving portion 9 is sleeved on the outer shell 3, the inner wall surface of the first sleeving portion 9 is connected to the outer peripheral surface of the outer shell 3, the first sealing portion 10 is in abutment with the side of the first sealing ring 6 away from the inner shell 14, and the first sealing portion 10 is provided with a first port 11 for the first conductor 1 to pass through.
[0036] Specifically, the first sleeve part 9 is arranged along the circumference of the first blocking part 10, the first sleeve part 9 is sleeved on the shell 3, the inner wall surface of the first sleeve part 9 is tightly combined with the outer circumferential surface of the shell 3, the first blocking part 10 abuts against the side of the first sealing ring 6 away from the inner shell 14, so that the first blocking part 10 and the inner shell 14 jointly clamp the first sealing ring 6, the positioning of the first sealing ring 6 is realized, the first sealing ring 6 is prevented from shaking, and the sealing performance is further improved.
[0037] In an embodiment, the first blocking part 10 is provided with a first expansion opening 12 extending along the length direction of the first conductor 1. The first expansion opening 12 is a long hole, and the first expansion opening 12 extends along the length direction of the first conductor 1, so as to facilitate the sleeving of the first sleeve part 9 on the shell 3 and facilitate the installation.
[0038] In an embodiment, the first sleeve part 9 is provided with a first clamping hole 13, and the outer circumference of the shell 3 close to the first opening 36 is provided with a first clamping buckle 4, and the first clamping buckle 4 is clamped with the first clamping hole 13.
[0039] Specifically, a plurality of first clamping holes 13 are arranged on the first sleeve part 9 along the circumference of the first blocking part 10, a plurality of first clamping buckles 4 are arranged on the outer circumference of the shell 3, the first clamping holes 13 correspond to the first clamping buckles 4 one by one, and when the first sleeve part 9 is sleeved on the shell 3, the first clamping buckles 4 are clamped in the first clamping holes 13 correspondingly, the connection between the first end cover 8 and the shell 3 is realized, and the connection strength between the first end cover 8 and the shell 3 is improved.
[0040] In an embodiment, the second sealing structure includes a second sealing ring 28, the second sealing ring 28 is provided with a second sealing hole 29 for the second conductor 2 to pass through, the second sealing ring 28 is inserted into the second opening 37, the outer circumference of the second sealing ring 28 is tightly combined with the inner cavity wall of the mounting cavity 38, and the side of the second sealing ring 28 facing the inner shell 14 abuts against the side of the inner shell 14 facing the second opening 37.
[0041] Specifically, the second sealing ring 28 is inserted into the second opening 37 of the mounting cavity 38, the outer circumference of the second sealing ring 28 is in interference fit with the inner cavity wall of the mounting cavity 38, the hole wall of the second sealing hole 29 of the second sealing ring 28 is in interference fit with the outer circumference of the second conductor 2, and the side of the second sealing ring 28 facing the first opening 36 abuts against the second perforation 41 of the inner shell 14, so as to block the gap between the second perforation 41 and the second conductor 2. The second sealing ring 28 is used as the second sealing structure, which is convenient for design and installation and is conducive to reducing the cost.
[0042] In an embodiment, the second sealing structure further comprises a second end cover 30, the second end cover 30 comprising a second blocking part 32 and a second sleeving part 31 connected to the second blocking part 32, the second sleeving part 31 being arranged around the circumference of the second blocking part 32, the second sleeving part 31 being sleeved on the outer shell 3, the inner wall surface of the second sleeving part 31 being connected to the outer circumferential surface of the outer shell 3, the second blocking part 32 being abutted against the side of the second sealing ring 28 away from the inner shell 14, and the second blocking part 32 being provided with a second port 33 for the second conductor 2 to pass through.
[0043] Specifically, the second sleeving part 31 is arranged around the circumference of the second blocking part 32, the second sleeving part 31 is sleeved on the outer shell 3, the inner wall surface of the second sleeving part 31 is tightly fitted to the outer circumferential surface of the outer shell 3, and the second blocking part 32 is abutted against the side of the second sealing ring 28 away from the inner shell 14, so that the second blocking part 32 and the inner shell 14 jointly clamp the second sealing ring 28, the positioning of the second sealing ring 28 is realized, the second sealing ring 28 is prevented from shaking, and the sealing performance is further improved.
[0044] In an embodiment, the second blocking part 32 is provided with a second expansion opening 34, and the second expansion opening 34 extends along the length direction of the second conductor 2. The second expansion opening 34 is a long hole, and the second expansion opening 34 extends along the length direction of the second conductor 2, so as to facilitate the sleeving of the second sleeving part 31 on the outer shell 3 and facilitate the installation.
[0045] The second blocking part 32 is provided with a second clamping hole 35, the outer shell 3 is provided with a second buckle 5 on the outer circumferential surface close to the second opening 37, and the second buckle 5 is clamped with the second clamping hole 35.
[0046] Specifically, the second sleeving part 31 is provided with a plurality of second clamping holes 35 around the circumference of the second blocking part 32, the outer shell 3 is provided with a plurality of second buckles 5 on the outer circumferential surface, the second clamping holes 35 correspond to the second buckles 5 one by one, when the second sleeving part 31 is sleeved on the outer shell 3, the second buckles 5 are correspondingly clamped in the second clamping holes 35, the connection between the second end cover 30 and the outer shell 3 is realized, and the connection strength between the second end cover 30 and the outer shell 3 is improved.
[0047] Compared with the prior art, the junction box, the inner shell 14 is installed in the outer shell 3, the first sealing structure is arranged between the first opening 36 and the first perforation 40, the gap between the outer periphery of the first conductor 1 and the first perforation 40 can be blocked, the second sealing structure is arranged between the second opening 37 and the second perforation 41, the gap between the outer periphery of the second conductor 2 and the second perforation 41 can be blocked, so that the sealing cavity 42 of the inner shell 14 forms a sealed space, impurities and water are not easy to enter, the sealing performance is good, the connecting part of the first conductor 1 and the second conductor 2 is installed in the sealed space, the connecting part between the two conductors can be well protected, and the waterproof performance is good.
[0048] The above merely describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A junction box, characterized in that, The device includes an outer shell (3), an inner shell (14), a first sealing structure, and a second sealing structure. The outer shell (3) has an installation cavity (38) and a first opening (36) and a second opening (37) communicating with the installation cavity (38). The inner shell (14) is installed in the installation cavity (38). The inner shell (14) has a sealing cavity (42) and a first through hole (40) and a second through hole (41) communicating with the sealing cavity (42). The first opening (36) is used to allow the first conductor (1) to enter the installation cavity (38), the second opening (37) is used to allow the second conductor (2) to enter the installation cavity (38), the first through hole (40) is used to allow the first conductor (1) to enter the sealing cavity (42), the second through hole (41) is used to allow the second conductor (2) to enter the sealing cavity (42), and the sealing cavity (42) is used to accommodate the connection part of the first conductor (1) and the second conductor (2). The first sealing structure is connected between the first opening (36) and the first perforation (40), and the first sealing structure is used to seal the gap between the hole wall of the first perforation (40) and the first conductor (1). The second sealing structure is connected between the second opening (37) and the second perforation (41), and the second sealing structure is used to seal the gap between the hole wall of the second perforation (41) and the second conductor (2).
2. The junction box according to claim 1, characterized in that, The inner shell (14) includes a first shell (15) and a second shell (21) disposed opposite to each other. The first shell (15) has a first abutting surface (16) on the side facing the second shell (21), and the second shell (21) has a second abutting surface (22) on the side facing the first shell (15). The first abutting surface (16) has a first sealing groove (17). The first shell (15) has a first notch (18) and a second notch (19) communicating with the first sealing groove (17). The second abutting surface (22) has a second sealing groove (23). The second shell (21) has a third notch (24) and a fourth notch (25) communicating with the second sealing groove (23). The first contact surface (16) abuts against the second contact surface (22), the first sealing groove (17) and the second sealing groove (23) are engaged to form the sealing cavity (42), the first notch (18) and the third notch (24) are engaged to form the first perforation (40), and the second notch (19) and the fourth notch (25) are engaged to form the second perforation (41).
3. The junction box according to claim 2, characterized in that, The first contact surface (16) is provided with a plug post (26), and the second contact surface (22) is provided with a plug hole (27). The plug post (26) is plugged into the plug hole (27).
4. The junction box according to claim 2, characterized in that, The first sealing structure includes a first sealing ring (6), the first sealing ring (6) is provided with a first sealing hole (7) for the first conductor (1) to pass through, the first sealing ring (6) is inserted into the first opening (36), the outer periphery of the first sealing ring (6) is tightly fitted with the inner wall of the mounting cavity (38), and the side of the first sealing ring (6) facing the inner shell (14) abuts against the side of the inner shell (14) facing the first opening (36).
5. The junction box according to claim 4, characterized in that, The first sealing structure further includes a first end cap (8), which includes a first sealing part (10) and a first fitting part (9) connected together. The first fitting part (9) is arranged around the first sealing part (10) in the circumferential direction. The first fitting part (9) is fitted onto the outer shell (3). The inner wall surface of the first fitting part (9) is connected to the outer circumferential surface of the outer shell (3). The first sealing part (10) abuts against the side of the first sealing ring (6) facing away from the inner shell (14). The first sealing part (10) is provided with a first port (11) through which the first conductor (1) passes.
6. The junction box according to claim 5, characterized in that, The first sealing part (10) is provided with a first expansion port (12), which extends along the length direction of the first conductor (1).
7. The junction box according to claim 5, characterized in that, The first fitting part (9) is provided with a first card hole (13), and the outer periphery of the outer shell (3) near the first opening (36) is provided with a first buckle (4), which engages with the first card hole (13).
8. The junction box according to claim 2, characterized in that, The second sealing structure includes a second sealing ring (28), which has a second sealing hole (29) through which the second conductor (2) passes. The second sealing ring (28) is inserted into the second opening (37). The outer periphery of the second sealing ring (28) is tightly fitted with the inner wall of the mounting cavity (38). The side of the second sealing ring (28) facing the inner shell (14) abuts against the side of the inner shell (14) facing the second opening (37).
9. The junction box according to claim 8, characterized in that, The second sealing structure further includes a second end cap (30), which includes a connected second sealing part (32) and a second fitting part (31). The second fitting part (31) is arranged around the second sealing part (32) in the circumferential direction. The second fitting part (31) is fitted onto the outer shell (3). The inner wall surface of the second fitting part (31) is connected to the outer circumferential surface of the outer shell (3). The second sealing part (32) abuts against the side of the second sealing ring (28) facing away from the inner shell (14). The second sealing part (32) is provided with a second port (33) through which the second conductor (2) passes.
10. The junction box according to claim 9, characterized in that, The second sealing part (32) is provided with a second card hole (35), and the outer periphery of the outer shell (3) near the second opening (37) is provided with a second buckle (5), which engages with the second card hole (35).