Waterproof junction box and waterproof wiring terminal thereof

Abstract

The utility model belongs to the technical field of wiring, and particularly relates to a waterproof junction box and a waterproof wiring terminal thereof, which comprise a wire holder assembly, an insulating sealing cap and a first insulating sealing ring, connecting electrodes are arranged in the external thread convex columns on the upper surface of the wire holder assembly; a connecting bridge is arranged in the wire holder assembly and is electrically connected with the connecting electrode; the insulating sealing cap is in threaded connection with the external thread convex column; a wire core of the conductive wire can penetrate through a hole in the insulating sealing cap and the first insulating sealing ring and is in electric contact with the connecting electrode; and the insulating sealing cap can tightly press the first insulating sealing ring, so that the inner ring side of the first insulating sealing ring is in sealing contact with the insulating layer of the conductive wire. According to the scheme, the first insulating sealing ring is sealed among the insulating sealing cap, the external thread convex column and the conductive wire insulating layer, so that waterproof isolation between the wire core and the external environment is realized, the waterproof performance of the wiring position is effectively realized, and the waterproof performance of the wiring terminal in use is ensured.

Description

Technical Field

[0001] The utility model relates to a wiring connection in the technical field, and in particular to a waterproof wiring box and a waterproof wiring terminal thereof. Background Art

[0002] The wiring terminals inside the existing straight-through junction box are often directly exposed. Once the outer shell loses its waterproof function, or water flows into the junction box through the interlayer inside the cable, the water tends to flow in the straight-through junction box and cause a short circuit or power outage.

[0003] Therefore, it is necessary to design a structure that can realize waterproofing of the connection terminals inside the junction box. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the present invention provides a waterproof junction box and a waterproof junction terminal thereof.

[0005] The technical solution adopted by the utility model is:

[0006] A waterproof terminal block comprises a terminal block assembly, an insulating sealing cap and a first insulating sealing ring;

[0007] The upper surface of the terminal block assembly has at least one pair of externally threaded bosses, and a connection electrode is arranged in each of the externally threaded bosses; a connection bridge is arranged inside the terminal block assembly, the connection bridge is insulated from the external environment, and is electrically connected to the two connection electrodes at the pair of externally threaded bosses;

[0008] The insulating sealing cap is threadedly connected to the external threaded boss, and the first insulating sealing ring is arranged in the insulating sealing cap; the core of the conductive wire can pass through the hole on the insulating sealing cap and the first insulating sealing ring, and make electrical contact with the electrode; the insulating sealing cap can press the first insulating sealing ring so that the inner ring side of the first insulating sealing ring is in sealing contact with the insulating layer of the conductive wire.

[0009] As an alternative or supplement to the above-mentioned waterproof terminal: the lower end of the connection electrode is cylindrical, and connection sleeves are provided at both ends of the connection bridge, and the connection sleeves are plug-connected with the connection electrode.

[0010] As an alternative or supplement to the above-mentioned waterproof terminal block: the terminal block assembly includes an upper plate and a lower plate; a circular boss is provided on the upper surface of the upper plate, the electrical connection sleeve is provided at the center of the circular boss, and the circular boss is plug-connected to the lower surface of the upper plate.

[0011] As an alternative or supplement to the above waterproof terminal: a second insulating sealing ring is provided at the root of the circular boss, and the second insulating sealing ring is used for sealing between the circular boss and the upper plate.

[0012] As an alternative or supplement to the above-mentioned waterproof terminal: a groove is provided at the bottom of the lower plate, the connecting bridge is provided in the groove, and the groove is filled with potting glue for sealing.

[0013] As an alternative or supplement to the above-mentioned waterproof terminal: a radial hole is arranged on the side wall of the external threaded boss, and a locking screw is arranged in the radial hole.

[0014] As an alternative or supplement to the above-mentioned waterproof terminal: the upper end of the connection electrode is in the shape of a circular tube, and one end of the locking screw passes through the tube wall of the upper end of the connection electrode and extends into the tube cavity of the connection electrode.

[0015] As an alternative or supplement to the above-mentioned waterproof terminal: the inner top of the insulating sealing cap is provided with a first conical surface, which can fit with the first insulating sealing ring and be used to radially extrude the first insulating sealing ring; the root of the external threaded boss is provided with a third insulating sealing ring, and the lower edge of the insulating sealing cap is provided with a third conical surface, which can fit with the third insulating sealing ring and be used to radially extrude the third insulating sealing ring.

[0016] As an alternative or supplement to the above-mentioned waterproof terminal: when the upper surface of the terminal block assembly has two externally threaded bosses, the two externally threaded bosses are respectively used for connecting the live wire and the neutral wire; when the upper surface of the terminal block assembly has three externally threaded bosses, the three externally threaded bosses are respectively used for connecting the three-phase conductive wires or respectively for connecting the live wire, the neutral wire and the ground wire.

[0017] A waterproof junction box and its waterproof junction terminal, comprising an outer box, a line inlet and a line outlet are arranged on the box wall of the outer box, the above-mentioned waterproof junction terminal is arranged inside the outer box, the conductive wire extends into the outer box from the line inlet or the line outlet and is connected to the waterproof junction terminal; a box cover for sealing is arranged at the box opening of the outer box.

[0018] The beneficial effects of the utility model are as follows: the scheme realizes waterproof isolation of the wire core and the external environment through the sealing of the first insulating sealing ring between the insulating sealing cap, the external threaded boss and the insulating layer of the conductive wire, effectively realizes waterproofing of the wiring position, and ensures the waterproof performance of the wiring terminal when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0020] Figure 1 This is the exploded structural diagram of the waterproof junction box in this scheme;

[0021] Figure 2 This is the exploded structure diagram of the waterproof terminal block;

[0022] Figure 3 This is a cross-sectional structural diagram of the waterproof terminal block.

[0023] In the figure: 1-outer box; 2-box cover; 3-insulating sealing cap; 4-first insulating sealing ring; 5-electrode connection; 6-upper plate; 61-external threaded boss; 7-second insulating sealing ring; 8-lower plate; 81-circular boss; 9-electrical connection sleeve; 10-connecting bridge; 11-potting glue. DETAILED DESCRIPTION

[0024] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0025] Example 1

[0026] like Figures 1 to 3 As shown, this embodiment designs a waterproof terminal block, including a terminal block assembly, an insulating cap 3, a first insulating sealing ring 4 and other components.

[0027] The upper surface of the terminal block assembly has at least one pair of externally threaded bosses 61, the number of which corresponds to the number of wires to be connected, and each externally threaded boss 61 includes two externally threaded bosses 61. When the upper surface of the terminal block assembly has two pairs of externally threaded bosses 61, the two pairs of externally threaded bosses 61 are respectively used for connecting the live wire and the neutral wire; when the upper surface of the terminal block assembly has three pairs of externally threaded bosses 61, the three externally threaded bosses 61 are respectively used for connecting the three-phase conductive wires or for connecting the live wire, the neutral wire and the ground wire.

[0028] A connection electrode 5 is provided in each external threaded boss 61 , and the connection electrodes 5 of each pair of external threaded bosses 61 are electrically connected to each other. A connection bridge 10 is provided inside the terminal block assembly, and the connection bridge 10 is insulated and isolated from the external environment. The connection bridge 10 is used to electrically connect the two connection electrodes 5 at a pair of external threaded bosses 61 .

[0029] The insulating cap 3 is threadedly connected with the external thread boss 61, and a hole is provided at the inner top of the insulating cap 3 for the conductive wire to pass through. A first insulating seal is also provided at the inner top of the insulating cap 3. The first insulating seal is used to seal between the insulating cap 3, the external thread boss 61 and the insulating layer of the conductive wire, thereby achieving waterproof isolation of the wire core and the connecting electrode 5 from the external environment, effectively achieving waterproofness of the wiring position, and ensuring the waterproof performance of the terminal when in use. When the wire core of the conductive wire can insulate the hole on the cap 3 and the first insulating seal ring 4, and is in electrical contact with the connecting electrode 5, tightening the insulating cap 3 can compress the first insulating seal ring 4, ensuring that the inner ring side of the first insulating seal ring 4 is in sealed contact with the insulating layer of the conductive wire. The inner top of the insulating sealing cap 3 is provided with a first conical surface, and the first conical surface can fit with the first insulating sealing ring 4. When the insulating sealing cap 3 is tightened, the pressure of the first conical surface on the first insulating sealing ring 4 can be decomposed into a radial component along the first insulating sealing ring 4 and an axial component along the first insulating sealing ring 4, wherein the radial component of force can radially press against the insulating layer of the conductive wire, and the axial component of force can press against the upper end surface of the external threaded boss 61.

[0030] The lower end of the connecting electrode 5 is cylindrical, and a connecting sleeve 9 is provided at both ends of the connecting bridge 10. The connecting sleeve 9 is in the shape of a tube sleeve.

[0031] The terminal block assembly includes components such as an upper plate 6, a lower plate 8 and a potting glue 11. A circular boss 81 is provided on the upper surface of the upper plate 6, and the electrical connection sleeve 9 is provided at the center of the circular boss 81. The circular boss 81 is plug-connected with the lower surface of the upper plate 6. The circular boss 81 is not only convenient for the installation of the electrical connection sleeve 9, but also convenient for the positioning of the upper plate 6. A second insulating sealing ring 7 is provided at the root of the circular boss 81, and the second insulating sealing ring 7 is used for sealing between the circular boss 81 and the upper plate 6.

[0032] A groove is provided at the bottom of the lower plate 8, and the connecting bridge 10 is provided in the groove. The potting glue 11 covers the notch of the groove and seals the groove, thereby ensuring waterproof isolation of the connecting bridge 10 from the external environment.

[0033] A radial hole is provided on the side wall of the external threaded boss 61, and a locking screw is provided in the radial hole. The locking screw is threadedly matched with the radial hole. The upper end of the connection electrode 5 is in a circular tube shape. One end of the locking screw passes through the tube wall of the upper end of the connection electrode 5 and extends into the tube cavity of the connection electrode 5. When the core of the conductive wire is inserted into the upper end of the connection electrode 5, the locking screw can be tightened to ensure a reliable connection between the core and the connection electrode 5.

[0034] A third insulating sealing ring is disposed at the root of the external threaded boss 61 , and a third conical surface is disposed at the lower edge of the insulating sealing cap 3 , and the third conical surface can fit the third insulating sealing ring and is used to radially extrude the third insulating sealing ring.

[0035] Example 2

[0036] like Figures 1 to 3 As shown, this embodiment designs a waterproof junction box and a waterproof junction terminal thereof, including an outer box 1 and the waterproof junction terminal described in Embodiment 1.

[0037] The outer box 1 is a round box, square box or other box structure with an opening at the top. A wire inlet and a wire outlet are provided on the box wall of the outer box 1, and the conductive wire extends into the outer box 1 from the wire inlet or the wire outlet. A hanging ear for connecting a screw is also provided on the outer wall of the outer box 1, so that the outer box 1 can be fixed to a wall, a ground or a ceiling by screws.

[0038] The waterproof terminal block is arranged in the box cavity of the outer box 1. After the conductive wire is inserted into the outer box 1 from the wire inlet or the wire outlet, it can be connected to the waterproof terminal block. The waterproof terminal block includes a terminal block assembly, an insulating cap 3 and a first insulating sealing ring 4;

[0039] The upper surface of the terminal block assembly has at least one pair of externally threaded bosses 61, and a connection electrode 5 is arranged in each externally threaded boss 61; a connection bridge 10 is arranged inside the terminal block assembly, and the connection bridge 10 is insulated from the external environment and electrically connected to the two connection electrodes 5 at the pair of externally threaded bosses 61; the insulating sealing cap 3 is threadedly connected to the externally threaded bosses 61, and the first insulating sealing ring 4 is arranged in the insulating sealing cap 3; the core of the conductive wire can pass through the hole on the insulating sealing cap 3 and the first insulating sealing ring 4, and be in electrical contact with the connection electrode 5; the insulating sealing cap 3 can press the first insulating sealing ring 4 so that the inner ring side of the first insulating sealing ring 4 is in sealing contact with the insulating layer of the conductive wire.

[0040] The lower end of the connecting electrode 5 is cylindrical, and connecting sleeves 9 are provided at both ends of the connecting bridge 10 , and the connecting sleeves 9 are plug-connected to the connecting electrode 5 .

[0041] The terminal block assembly includes an upper plate 6 and a lower plate 8; a circular boss 81 is provided on the upper surface of the upper plate 6, the electrical connection sleeve 9 is provided at the center of the circular boss 81, and the circular boss 81 is plug-connected with the lower surface of the upper plate 6. A second insulating seal ring 7 is provided at the root of the circular boss 81, and the second insulating seal ring 7 is used for sealing between the circular boss 81 and the upper plate 6. A groove is provided at the bottom of the lower plate 8, the electrical bridge 10 is provided in the groove, and the groove is filled with a potting glue 11 for sealing.

[0042] A box cover 2 for sealing is arranged at the box opening of the outer box 1, and the box cover 2 can be made of plastic material.

[0043] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A waterproof terminal block, characterized in that: It comprises a terminal block assembly, an insulating sealing cap (3) and a first insulating sealing ring (4); The upper surface of the terminal block assembly has at least one pair of externally threaded bosses (61), and a connection electrode (5) is arranged inside each externally threaded boss (61); a connection bridge (10) is arranged inside the terminal block assembly, and the connection bridge (10) is insulated from the external environment and electrically connected to the two connection electrodes (5) at the pair of externally threaded bosses (61); The insulating sealing cap (3) is threadedly connected to the external threaded protrusion (61), and the first insulating sealing ring (4) is arranged in the insulating sealing cap (3); the core of the conductive wire can pass through the hole on the insulating sealing cap (3) and the first insulating sealing ring (4) and be in electrical contact with the electrode (5); the insulating sealing cap (3) can press the first insulating sealing ring (4) so ​​that the inner ring side of the first insulating sealing ring (4) is in sealing contact with the insulating layer of the conductive wire.

2. The waterproof terminal block according to claim 1, characterized in that: The lower end of the connection electrode (5) is cylindrical, and connection sleeves (9) are provided at both ends of the connection bridge (10), and the connection sleeves (9) are plug-connected to the connection electrode (5).

3. The waterproof terminal block according to claim 2, characterized in that: The terminal block assembly comprises an upper plate (6) and a lower plate (8); a circular boss (81) is provided on the upper surface of the upper plate (6); the electrical connection sleeve (9) is provided at the center of the circular boss (81); and the circular boss (81) is plug-connected to the lower surface of the upper plate (6).

4. The waterproof terminal block according to claim 3, characterized in that: A second insulating sealing ring (7) is provided at the root of the circular convex column (81), and the second insulating sealing ring (7) is used for sealing between the circular convex column (81) and the upper plate (6).

5. The waterproof terminal block according to claim 3, characterized in that: A groove is provided at the bottom of the lower plate (8), the connecting bridge (10) is arranged in the groove, and the groove is filled with a potting glue (11) for sealing.

6. The waterproof terminal block according to any one of claims 1 to 5, characterized in that: A radial hole is arranged on the side wall of the external threaded boss (61), and a locking screw is arranged in the radial hole.

7. The waterproof terminal block according to claim 6, characterized in that: The upper end of the connection electrode (5) is in the shape of a circular tube, and one end of the locking screw passes through the tube wall of the upper end of the connection electrode (5) and extends into the tube cavity of the connection electrode (5).

8. The waterproof terminal block according to claim 6, characterized in that: The inner top of the insulating sealing cap (3) is provided with a first conical surface, which can be fitted with the first insulating sealing ring (4) and used for radially extruding the first insulating sealing ring (4); the root of the external threaded boss (61) is provided with a third insulating sealing ring, and the lower edge of the insulating sealing cap (3) is provided with a third conical surface, which can be fitted with the third insulating sealing ring and used for radially extruding the third insulating sealing ring.

9. The waterproof terminal block according to claim 1, characterized in that: When the upper surface of the terminal block assembly has two pairs of externally threaded bosses (61), the two externally threaded bosses (61) are respectively used for connecting the live wire and the neutral wire; when the upper surface of the terminal block assembly has three pairs of externally threaded bosses (61), the three externally threaded bosses (61) are respectively used for connecting the three-phase conductive wires or respectively for connecting the live wire, the neutral wire and the ground wire.

10. A waterproof junction box and a waterproof terminal thereof, characterized in that: The invention comprises an outer box (1), a line inlet and a line outlet are arranged on the box wall of the outer box (1), a waterproof terminal according to any one of claims 1 to 5, 7 to 9 is arranged inside the outer box (1), a conductive wire extends into the outer box (1) from the line inlet or the line outlet and is connected to the waterproof terminal; a box cover (2) for sealing is arranged at the box opening of the outer box (1).

Images