Junction box

Abstract

The utility model discloses a junction box, which comprises a box body and a terminal group arranged in the box body, a partition plate and a mounting cavity formed below the partition plate are arranged in the box body, the mounting cavity is provided with a downward opening, and a bottom cover is arranged at the opening; the terminal group comprises a current-conducting plate positioned in the mounting cavity, a wiring frame sleeving the current-conducting plate and a wire pressing screw screwed at the upper end of the wiring frame; a pressing plate covers the upper portion of the partition plate, a screw penetrating hole is formed in the partition plate, a wire pressing screw penetrates through the screw penetrating hole, the partition plate and the pressing plate are matched to stop and limit the head of the wire pressing screw so as to limit vertical movement of the wire pressing screw, and an operation hole is formed in the position, corresponding to the wire pressing screw, of the pressing plate. According to the junction box, the assembly structure is optimized, the junction box is convenient to assemble and produce, damage to the wires during wiring can be avoided, and the junction box has good practicability.

Description

Technical Field

[0001] This utility model belongs to the field of electrical technology, and specifically relates to a junction box. Background Technology

[0002] A junction box for electricity metering devices is a wiring device specifically designed for electricity metering systems. It is primarily used to connect the electricity meter to external lines, ensuring accurate transmission of electricity data and safe operation. The main problems with existing junction boxes are: an unreasonable structural design leads to cumbersome assembly, resulting in low assembly efficiency; and the wiring method, where the wire screws directly contact the wires (creating a torsional force on the wires when tightened), easily damages the wires. Utility Model Content

[0003] The purpose of this utility model is to provide a junction box that is easy to assemble.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides a junction box, including a box body and a terminal group disposed within the box body; the box body is provided with a partition and a mounting cavity formed below the partition, the mounting cavity having a downward opening, and a bottom cover is installed at the opening; the terminal group includes a conductive plate positioned within the mounting cavity, a wiring frame sleeved on the conductive plate, and a wire clamping screw screwed to the upper end of the wiring frame; a pressure plate is installed on the upper cover of the partition, the partition has a screw through hole, the wire clamping screw is disposed through the screw through hole, the partition and the pressure plate cooperate to stop and limit the head of the wire clamping screw to restrict the vertical movement of the wire clamping screw, and an operating hole is provided on the pressure plate at a position corresponding to the wire clamping screw.

[0006] Preferably, the pressure plate and the partition plate are provided with corresponding clearance holes, the conductive plate has an upwardly bent contact portion that extends to the clearance hole, the upper part of the pressure plate is provided with a connecting piece for connecting and disconnecting the contact portions on two adjacent conductive plates, and the contact portion is provided with a locking screw for locking the connecting piece.

[0007] Preferably, the lower end of the wiring frame facing the wiring hole is provided with a downwardly protruding wire stop plate, which blocks the wiring hole when the wire pressing screw is tightened.

[0008] Preferably, the bottom cover is provided with an upwardly protruding pressing block, which presses the conductive plate tightly within the mounting cavity.

[0009] Preferably, the partition and the box body are integrally formed.

[0010] Preferably, a recess is formed in the box body above the partition, and the pressure plate is fixed in the recess.

[0011] The positive effects of this utility model are: the junction box structure of this utility model has been optimized, making assembly more convenient and improving production efficiency; moreover, this wiring method will not damage the wires, thus ensuring excellent electrical performance. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art are briefly introduced below. Similar elements or parts in the drawings are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0013] Figure 1 This is a perspective view of the junction box in this utility model;

[0014] Figure 2 For along Figure 1 A sectional view cut along line AA.

[0015] Figure 3 This is an exploded view of the junction box in this utility model;

[0016] Figure 4 This is a schematic diagram of the terminal block, connecting piece, and locking screw in this utility model when assembled.

[0017] Figure 5 This is a schematic diagram of the terminal assembly, connecting piece, and locking screw in this utility model when disassembled.

[0018] The reference numerals in the figure are as follows: 1. Box body; 11. Partition plate; 12. Mounting cavity; 13. Screw hole; 14. Wiring hole; 2. Terminal group; 20. Wiring frame; 21. Conductive plate; 22. Electrical connection part; 23. Locking screw; 24. Wire stop plate; 25. Wire clamping screw; 251. Head; 3. Pressure plate; 31. Operating hole; 32. Clearance hole; 4. Bottom cover; 40. Pressing block; 5. Connecting piece. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] The junction box structure of this utility model embodiment is as follows: Figures 1 to 5As shown, it includes a housing 1 and a terminal group 2 disposed inside the housing 1; in actual use, external wires are passed through the housing 3 and connected to the terminal group 2.

[0022] Specifically, the housing 1 has a partition 11 and a mounting cavity 12 formed below the partition 11. The mounting cavity 12 has a downward opening, and a bottom cover 4 is installed at the opening. The terminal group 2 includes a conductive plate 21 positioned in the mounting cavity 12, a wiring frame 20 sleeved on the conductive plate 21, and a wire clamping screw 25 screwed to the upper end of the wiring frame 20. A pressure plate 3 is installed on the upper part of the partition 11. The partition 11 has a screw through hole 13, through which the wire clamping screw 25 is installed. The partition 11 and the pressure plate 3 cooperate to stop and limit the head 251 of the wire clamping screw 25, thereby restricting the vertical movement of the wire clamping screw 25. An operating hole 31 is provided on the pressure plate 3 at a position corresponding to the wire clamping screw 25. The function of the operating hole 31 is to allow the head 251 of the wire clamping screw 25 to be exposed. This design facilitates the use of a screwdriver to tighten the wire clamping screw 25. During junction box assembly, the junction box frame 20 and conductive plate 21 are combined and inserted into the mounting cavity 12 through the opening, and the bottom cover 4 is installed. The wire clamping screw 25 is passed through the screw hole 13 from top to bottom and screwed into the junction box frame 20. The pressure plate 3 is installed on the upper part of the partition 11 and works with the partition 11 to stop and limit the head 251 of the wire clamping screw 25, preventing the wire clamping screw 25 from moving up and down. In this way, when the wire clamping screw 25 is tightened during wiring, the junction box frame 22 can move up and down relative to the conductive plate 21 to press the wire tightly between the junction box frame 21 and the conductive plate 21. Compared with the traditional method of directly contacting the wire with the wire clamping screw, this wiring method will not damage the wire. Moreover, the junction box structure has been optimized, which significantly improves the assembly efficiency and has good practicality.

[0023] For example, the pressure plate 3 can be fixed to the box body 1 by snap-fit ​​or screw fixing.

[0024] For further optimization, see Figure 2 , Figure 4 and Figure 5 As shown, the pressure plate 3 and the partition plate 11 are provided with corresponding clearance holes 32. The conductive plate 21 has an upwardly bent contact portion 22 that extends to the clearance hole 32. The upper part of the pressure plate 3 is provided with a connecting piece 5 for connecting and disconnecting the contact portions 22 on two adjacent conductive plates 21. The contact portion 22 is provided with a locking screw 23 for locking the connecting piece 5. Through the design of the connecting piece 5, the electrical connection state between adjacent conductive plates 21 can be flexibly controlled. The locking screw 23 makes the connecting piece 5 and the contact portion 22 in close contact, ensuring the reliability of the electrical connection.

[0025] See Figure 2A downwardly protruding wire baffle 24 is provided on the lower end of the side of the junction box 20 facing the wiring hole 14. When the wire clamping screw 25 is tightened, the wire baffle 24 blocks the wiring hole 14. In this state, the wire baffle 24 prevents the wire from directly extending into the junction box 20, thus preventing incorrect wiring. When wiring is required, the clamping screw 25 is loosened to move the junction box 20 downward, creating a wire clamping gap between it and the conductive plate 21. At the same time, the wire baffle 24 is removed from the position blocking the wiring hole 14. Then, the wire is inserted into the wire clamping gap through the wiring hole 14. Finally, the wire clamping screw 14 is tightened to move the junction box 20 upward, thereby clamping the wire between the junction box 20 and the conductive plate 21. For user convenience, the wire clamping screw 25 can be adjusted to the tightened state before the junction box leaves the factory.

[0026] See Figure 2 and Figure 3 In order to facilitate the positioning of the conductive plate 21, the bottom cover 4 is provided with an upwardly protruding pressing block 40, which presses the conductive plate 21 tightly in the mounting cavity 12, thereby completing the fixing of the conductive plate 21.

[0027] Preferably, the partition 11 and the box body 1 are integrally formed, specifically by injection molding. This eliminates the need to install the partition 11 into the box body 1, simplifying the assembly process.

[0028] The box body 1 has a recessed cavity formed above the partition 11, and the pressure plate 3 is fixed in the recessed cavity. This design allows the pressure plate 3 to be tightly integrated with the inside of the box body 1, which can improve the integrity and compactness of the structure.

[0029] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this invention still fall within the scope of protection of this invention.

Claims

1. A junction box, comprising a box body (1) and a terminal group (2) disposed within the box body (1); Its features are, The box body (1) is provided with a partition (11) and a mounting cavity (12) formed below the partition (11). The mounting cavity (12) has a downward opening and a bottom cover (4) is installed at the opening. The terminal group (2) includes a conductive plate (21) positioned in the mounting cavity (12), a wiring frame (20) sleeved on the conductive plate (21), and a wire clamping screw (25) screwed to the upper end of the wiring frame (20). A pressure plate (3) is installed on the upper part of the partition (11). The partition (11) is provided with a screw through hole (13). The wire clamping screw (25) is set through the screw through hole (13). The partition (11) and the pressure plate (3) cooperate to form a stop limit on the head (251) of the wire clamping screw (25) to restrict the up and down movement of the wire clamping screw (25). An operating hole (31) is provided on the pressure plate (3) at a position corresponding to the wire clamping screw (25).

2. The junction box according to claim 1, characterized in that, The pressure plate (3) and the partition plate (11) are provided with corresponding clearance holes (32). The conductive plate (21) has an upwardly bent contact part (22) that extends to the clearance hole (32). The upper part of the pressure plate (3) is provided with a connecting piece (5) for connecting and disconnecting the contact parts (22) on two adjacent conductive plates (21). The contact part (22) is provided with a locking screw (23) for locking the connecting piece (5).

3. The junction box according to claim 1, characterized in that, The wiring frame (20) has a downwardly protruding wire baffle (24) at the lower end of the side facing the wiring hole (14). When the wire pressing screw (25) is tightened, the wire baffle (24) blocks the wiring hole (14).

4. The junction box according to claim 1, characterized in that, The bottom cover (4) is provided with an upwardly protruding pressing block (40), which presses the conductive plate (21) tightly inside the mounting cavity (12).

5. The junction box according to claim 1, characterized in that, The partition (11) and the box body (1) are integrally formed.

6. The junction box according to claim 1, characterized in that, The box body (1) has a recessed cavity formed above the partition (11), and the pressure plate (3) is fixed in the recessed cavity.

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