Double-layer junction box

Abstract

The utility model provides a double-layer junction box, which comprises an insulating shell and a conductive piece arranged in the insulating shell, the insulating shell is provided with a circuit access end and at least two circuit output ends, and the circuit access end and the circuit output ends on the insulating shell are distributed up and down to form at least two layers of wiring structures which are vertically arranged. Wherein the circuit access ends are arranged on the upper layer or the lower layer, the circuit output ends are arranged on the upper layer and / or the lower layer, and the circuit access ends and the circuit output ends of the two layers are electrically connected through the conductive parts. The beneficial effects of the utility model are that the guide distribution is of a double-layer arrangement structure, and when a plurality of junction boxes are arranged for wiring, the transverse space can be saved so as to meet the installation requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit connection, in particular to a junction box. Background Art

[0002] In circuit wiring, it is common to encounter a situation where there is insufficient horizontal wiring space. For example, the high-current output terminals of traditional junction boxes are not arranged vertically, which results in a relatively wide horizontal width of the junction box. When there are many lines, multiple junction boxes need to be connected horizontally to meet the demand. However, due to the wide width of the junction boxes, it is difficult to install so many junction boxes in a limited space. For example, a maximum of 10 junction boxes can be installed in a row in an existing distribution box. When the line requires the installation of 12 junction boxes, the distribution box needs to be replaced to meet the demand, resulting in wasted space and increased costs. Utility Model Content

[0003] The technical problem to be solved by the present invention is how to reduce the width of a junction box with multiple output terminals so as to meet the needs of multiple output terminals without increasing the width of the junction box.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A double-layer junction box includes an insulating shell and a conductive member arranged within the insulating shell. The insulating shell is provided with a circuit input terminal and at least two circuit output terminals. The circuit input terminal and circuit output terminals on the insulating shell are arranged in an upper and lower distribution to form a vertically arranged at least two-layer wiring structure, wherein the circuit input terminal is arranged on the upper or lower layer, and the circuit output terminal is arranged on the upper and / or lower layer. The circuit input terminals and circuit output terminals on the two layers are electrically connected through the conductive member.

[0006] Preferably, the conductive part includes an aluminum part and a copper part, the aluminum part has a wiring port corresponding to the circuit input end and the circuit output end of the insulating shell, and the wiring port of the aluminum part and / or the insulating shell is connected to a tightening screw for clamping the wire. The copper part is located at one of the input ends and / or output ends of the junction box, wherein the copper part fits tightly with the aluminum part, and the copper part is pressed and positioned in the aluminum part by the insulating shell.

[0007] Preferably, the contact surface between the copper piece and the aluminum piece matches each other, and the contact surface between the copper piece and the aluminum piece includes a bottom surface and inclined surfaces on both sides.

[0008] Preferably, the insulating shell includes a base and an upper cover, the conductive member is embedded in the base and is pressed and fixed in the base by the upper cover, and the upper cover is buckled with the base.

[0009] Preferably, the base is a frame with an open top, a wiring port is provided on at least one end of the base, mounting portions extending outward are provided at both ends of the base, and mounting holes with countersunk holes are provided on the upper surfaces of the mounting portions.

[0010] Preferably, the aluminum piece is in an L-shaped structure as a whole, with the long part of the aluminum piece completely embedded in the base and the short part extending upward, and a cover is provided on the upper cover to cover the short part of the aluminum piece.

[0011] Preferably, a buckle is provided on one end of the upper cover facing the base, and a slot is provided on the base for the buckle on the upper cover to buckle.

[0012] Preferably, a barrier sheet is provided inside the upper cover for pressing the conductive component when the upper cover is buckled with the base.

[0013] Preferably, a positioning hole is provided on one surface of the copper piece, and a column is provided in the upper cover to be inserted into the positioning hole of the copper piece when the upper cover is buckled with the base.

[0014] Preferably, the column is arranged between the two tightening screws on the upper layer to block the insertion depth of the bidirectional wire.

[0015] The beneficial effect of the present invention is that the guide distribution of the present invention is a double-layer arrangement structure, which can save horizontal space when multiple junction boxes are arranged for wiring, thereby meeting installation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the entire utility model;

[0017] Figure 2 This is an exploded view of the structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the upper cover of the utility model;

[0019] Figure 4 It is a cross-sectional view of the entire utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example

[0022] See also Figure 1-Figure 4The figure shows a double-layer junction box, including an insulating shell and a conductive member arranged in the insulating shell. The insulating shell is provided with a circuit input terminal 1.1 and at least two circuit output terminals. The circuit input terminal 1.1 and the circuit output terminal on the insulating shell are arranged in an upper and lower distribution, forming a vertically arranged at least two-layer wiring structure, wherein the circuit input terminal 1.1 is arranged on the upper or lower layer, and the circuit output terminal is arranged on the upper and / or lower layer. The two layers of circuit input terminals 1.1 and circuit output terminals are electrically connected through the conductive member. In this embodiment, the circuit input terminal 1.1 is arranged on the lower layer, and the upper layer is provided with two circuit output terminals. In order to improve the conductive effect of the conductive parts and the wires, the conductive parts in this embodiment are designed to include aluminum parts 3 and copper parts 4. The aluminum part 3 has wiring ports corresponding to the circuit input end 1.1 and the circuit output end of the insulating shell. The wiring ports of the aluminum part 3 and / or the insulating shell are connected to the tightening screws 5 for pressing the wires. The corresponding insulating shell is provided with a through hole 2.2 for a tool to tighten the tightening screw 5, so that the tool can tighten and loosen the tightening screw 5. The copper part 4 is located at one of the input ends and / or output ends of the junction box, wherein the copper part 4 is tightly fitted with the aluminum part 3, and the copper part 4 is pressed and positioned in the aluminum part 3 by the insulating shell. In order to improve the contact effect between the copper part 4 and the aluminum part 3, in this embodiment, the contact surfaces of the copper part 4 and the aluminum part 3 are matched, and the contact surfaces of the copper part 4 and the aluminum part 3 include the bottom surface and the inclined surfaces on both sides, forming multi-faceted contact, increasing the contact surface, thereby improving the conductive performance, and making the copper and aluminum conductive parts in perfect contact, so that the junction box can realize the connection and output of aluminum wires, and can also connect copper wires for line output.

[0023] The aluminum component 3 described in this embodiment is an L-shaped structure as a whole, and the long part of the aluminum component 3 is completely embedded in the base 1, and the short part extends upward. A cover shell is provided on the upper cover 2 to cover the short part of the aluminum component 3. A wiring port is reserved at one end of the long part for connecting the incoming line, and wiring ports are provided at both ends of the short part for connecting the wires at the output end. Of course, one end of the short part can also be set as the incoming line port, and the other positions can be set as the output port.

[0024] In order to fix the copper part 4 and prevent it from shaking or falling off, in this embodiment, a positioning hole 4.1 is provided on one surface of the copper part 4, specifically on the upper surface of the copper part 4. A column 2.1 is provided in the upper cover 2 to be inserted into the positioning hole 4.1 of the copper part 4 when the upper cover 2 is buckled with the base 1. The copper part 4 is fixed by inserting the column 2.1 into the positioning hole 4.1 of the copper part 4. The depth of the positioning hole 4.1 and the size of the column 2.1 should match. It is best that the bottom of the column 2.1 of the upper cover 2 abuts against the bottom of the positioning hole 4.1 after the upper cover 2 is buckled with the base 1, so that the copper part 4 will not move up and down. The positioning hole 4.1 is opened. The bottom of the column 2.1 is preferably rounded, and the lower end of the column 2.1 is a cylindrical structure to facilitate the insertion of the column 2.1. The other positions of the column 2.1 are cross-shaped structures in cross section, which can increase the strength of the column 2.1. Since the length of the copper part 4 is not aligned with the length of the aluminum part 3 during installation, the copper part 4 is roughly positioned manually when installing the copper part 4, and then accurately positioned through the column 2.1 of the upper cover 2 and the positioning hole 4.1. When the column 2.1 is inserted into the positioning hole 4.1, the rounded corners of the positioning hole 4.1 have a guiding and positioning function, so that the copper part 4 can be automatically pushed to the correct position when the position is not accurate. The column 2.1 described in this embodiment is located between the two upper tightening screws 5 to block the insertion depth of the bidirectional wire. In this embodiment, the column 2.1 can also block the wires on both sides, so that the wires on both sides can be inserted to the appropriate depth, avoiding the problem of poor conductivity caused by insufficient insertion depth on one side. In this embodiment, there are two columns 2.1.

[0025] In this embodiment, the insulating housing includes a base 1 and a top cover 2. The conductive member is embedded in the base 1 and is pressed and fixed to the base 1 by the top cover 2. The top cover 2 is snap-fitted to the base 1. The base 1 is a frame with an open top. At least one end of the base 1 has a wiring port. The base 1 has outwardly extending mounting portions at both ends. The top surfaces of the mounting portions are provided with mounting holes 1 and 2 with countersunk holes. This allows the screw heads of the junction box to be hidden in the grooves after installation, without affecting the access of the wires, while ensuring a secure installation of the junction box.

[0026] In order to ensure that the upper cover 2 can be reliably connected to the base 1 in this embodiment, a buckle 2.4 is provided on the end of the upper cover 2 facing the base 1, and a slot 1.3 is provided on the base 1 for the buckle 2.4 on the upper cover 2 to be buckled. In order to facilitate opening the upper cover, a through slot 1.4 is provided on the side wall of the base corresponding to the position of the buckle 2.4. The upper cover is disassembled by inserting an external tool into the through slot, pressing the buckle and lifting the upper cover. In this embodiment, one of the slots is the wire input port on the base 1, and the upper arm of the wire input port is used to buckle with the buckle 2.4 on the upper cover 2. The entire product has only a tightening screw 5 for tightening the conductive wire, and no other screws are used for fixing it, so the assembly efficiency is high and the cost is low.

[0027] In order to fix the conductive part, this embodiment provides a barrier piece 2.3 inside the upper cover 2 to press the conductive part when the upper cover 2 is buckled with the base 1. This structure can prevent the conductive part from jumping up and down, and no additional screws are needed to fix the conductive part, which improves installation efficiency and reduces costs.

Claims

1. A double-layer junction box comprising an insulating housing and a conductive member disposed within the insulating housing, wherein the insulating housing is provided with a circuit input terminal and at least two circuit output terminals, and characterized in that: The circuit input terminal and the circuit output terminal on the insulating shell are distributed up and down to form at least two layers of vertically arranged wiring structure, wherein the circuit input terminal is arranged on the upper layer or the lower layer, and the circuit output terminal is arranged on the upper layer and / or the lower layer, and the circuit input terminals and circuit output terminals of the two layers are electrically connected through the conductive member.

2. The double-layer junction box according to claim 1, characterized in that: The conductive part includes an aluminum part and a copper part. The aluminum part has a wiring port corresponding to the circuit input end and circuit output end of the insulating shell. The wiring port of the aluminum part and / or the insulating shell is connected to a tightening screw for pressing the wire. The copper part is located at one of the input ends and / or output ends of the junction box, wherein the copper part is tightly fitted with the aluminum part and the copper part is pressed and positioned in the aluminum part by the insulating shell.

3. The double-layer junction box according to claim 2, characterized in that: The contact surfaces of the copper piece and the aluminum piece are consistent with each other, and the contact surfaces of the copper piece and the aluminum piece include a bottom surface and inclined surfaces on both sides.

4. The double-layer junction box according to claim 2, characterized in that: The insulating shell comprises a base and an upper cover. The conductive member is embedded in the base and is pressed and fixed in the base by the upper cover. The upper cover is buckled with the base.

5. The double-layer junction box according to claim 4, characterized in that: The base is a frame with an open top, a wiring port is provided on at least one end of the base, mounting portions extending outward are provided at both ends of the base, and mounting holes with countersunk holes are provided on the upper surfaces of the mounting portions.

6. The double-layer junction box according to claim 5, characterized in that: The aluminum piece is in an L-shaped structure as a whole, and the long part of the aluminum piece is completely embedded in the base, and the short part extends upward. The upper cover is provided with a cover shell that covers the short part of the aluminum piece.

7. The double-layer junction box according to claim 4, 5 or 6, characterized in that: The upper cover is provided with a buckle at one end facing the base, and the base is provided with a slot for the buckle on the upper cover to buckle.

8. The double-layer junction box according to claim 4, 5 or 6, characterized in that: A barrier sheet is provided inside the upper cover for pressing the conductive component when the upper cover is buckled with the base.

9. The double-layer junction box according to claim 4, 5 or 6, characterized in that: A positioning hole is provided on one surface of the copper piece, and a column is provided in the upper cover which is inserted into the positioning hole of the copper piece when the upper cover is buckled with the base.

10. The double-layer junction box according to claim 9, characterized in that: The upright post is arranged between the two upper tightening screws to block the insertion depth of the bidirectional wire.

Images