A junction box

Abstract

This utility model provides a junction box, including: a terminal assembly, an upper cover, a fixed lower cover, and a flip-down lower cover; the fixed lower cover has a chamber for fixing the terminal assembly, and the front end and rear end of the fixed lower cover along the length direction are respectively rotatably connected to the flip-down lower cover and the upper cover, so that the flip-down lower cover and the upper cover have an open position and a closed position relative to the fixed lower cover; when the flip-down lower cover and the upper cover are in the closed position, the upper cover and the flip-down lower cover cooperate to close the chamber; the upper cover and the flip-down lower cover are provided with screw holes and bolts, and the screw holes and bolts are used to connect and fix the upper cover and the flip-down lower cover to each other in the closed position; the threaded portion of the bolt is necked so that the bolt, after being loosened, engages with the flip-down lower cover in the direction of detachment.

Description

Technical Field

[0001] This utility model relates to junction boxes. Background Technology

[0002] There are three main types of junction boxes commonly found on the market:

[0003] Pure tooth-clamping structure: has fewer compatible wire specifications, poor pull resistance, and is not easy to connect;

[0004] Clamping screw structure: compatible with a wide range of wire specifications, with good anti-pull reliability, but it is not easy to connect wires and requires tools;

[0005] Gate-shaped structure: compatible with a wide range of wire specifications, generally reliable in terms of pull resistance, but not easy to connect wires.

[0006] Therefore, existing junction boxes generally suffer from problems such as difficult wiring and poor user experience. Utility Model Content

[0007] The main technical problem to be solved by this utility model is to provide a junction box that improves the convenience of inserting wires into terminals and provides a better user experience.

[0008] To solve the above-mentioned technical problems, this utility model provides a junction box, including: a terminal assembly, an upper cover, a fixed lower cover, and a flip-up lower cover;

[0009] The fixed lower cover has a chamber for fixing the terminal assembly. The front end and rear end of the fixed lower cover along the length direction are respectively rotatably connected to the flip lower cover and the upper cover, so that the flip lower cover and the upper cover have an open position and a closed position relative to the fixed lower cover, respectively. When the flip lower cover and the upper cover are in the closed position, the upper cover and the flip lower cover cooperate to close the chamber.

[0010] The upper cover and the flip-down lower cover are provided with screw holes and bolts, which are used to connect and fix the upper cover and the flip-down lower cover to each other in the closed position; the threaded portion of the bolt is necked so that the bolt, after being loosened, engages with the flip-down lower cover in the direction of detachment.

[0011] In a preferred embodiment: the terminal block assembly has a wiring hole on the side facing the front end of the fixed lower cover.

[0012] In a preferred embodiment: the front ends of the upper cover and the flip-down lower cover are respectively provided with clearance openings. When the upper cover and the flip-down lower cover are in the closed position, the clearance openings of the upper cover and the flip-down lower cover are combined to form an inlet hole for the power supply line to enter and exit.

[0013] In a preferred embodiment: the inner wall of the clearance opening is provided with a first serration to increase the friction between the clearance opening and the wire.

[0014] In a preferred embodiment: the top cover is provided with a row of second serrations behind the first serration.

[0015] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0016] This utility model provides a junction box that is compatible with various specifications of wires, has good anti-pull reliability, and is not easy to fall off when rotating the screws when opening the top cover and flipping the bottom cover. The bottom cover can be flipped to free up space, improving the convenience of inserting wires into the terminals and providing a good user experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention when both the upper cover and the flip-down lower cover are closed;

[0018] Figure 2 This is a schematic diagram of the upper cover being opened in a preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the preferred embodiment of the present invention when both the upper cover and the flip-down lower cover are open;

[0020] Figure 4 This is a cross-sectional view of the upper cover when it is open in a preferred embodiment of the present invention;

[0021] Figure 5 This is a wiring diagram of the upper cover when it is opened in a preferred embodiment of the present invention. Detailed Implementation

[0022] To make the technical solution and features of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific examples. It should be understood that these examples are only for illustrating this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0023] refer to Figure 1-5 This embodiment provides a junction box, including: a terminal block assembly 1, an upper cover 2, a fixed lower cover 3, and a flip-down lower cover 4;

[0024] The fixed lower cover 3 has a chamber for fixing the terminal assembly 1. The front end and rear end of the fixed lower cover 3 along the length direction are respectively rotatably connected to the flip lower cover 4 and the upper cover 2, so that the flip lower cover 4 and the upper cover 2 have an open position and a closed position relative to the fixed lower cover 3, respectively. When the flip lower cover 4 and the upper cover 2 are in the closed position, the upper cover 2 and the flip lower cover 4 cooperate to close the chamber. In this way, after the terminal assembly 1 is placed in the chamber, the interference of the flip lower cover 4 and the upper cover 2 on the terminal can be eliminated by rotating the flip lower cover 4 and the upper cover 2 to the open position, making wiring simpler and easier.

[0025] Simultaneously, after wiring is completed, the upper cover 2 and the flip-down lower cover 4 need to be fixed in the closed position to better isolate the wire 5 and terminal assembly 1 from the outside. For this purpose, the upper cover 2 and the flip-down lower cover 4 are provided with screw holes 9 and bolts 6. The screw holes 9 and bolts 6 are used to connect and fix the upper cover 2 and the flip-down lower cover 4 to each other in the closed position. The threaded portions of the screw holes 9 and bolts 6 are necked so that after loosening, the screw holes 9 and bolts 6 engage with the flip-down lower cover 4 in the direction of detachment. That is, when the user needs to open the upper cover 2 and the flip-down lower cover 4, they need to first loosen the screw holes 9 and bolts 6, and then remove the bolts 6 from the screw holes 9 of the upper cover 2 to open the upper cover 2 and the flip-down lower cover 4. Furthermore, because the threaded portions of the screw holes 9 and bolts 6 are necked, the bolts 6 maintain a engagement with the flip-down lower cover 4 after being removed from the screw holes 9 of the upper cover 2, thus preventing the bolts 6 from falling out of the flip-down lower cover 4.

[0026] In this embodiment, the terminal assembly 1 has a wiring hole on the side facing the front end of the fixed lower cover 3. Furthermore, to prevent the upper cover 2 and the flip-down lower cover 4 from interfering with the wire 5, the front ends of the upper cover 2 and the flip-down lower cover 4 are each provided with clearance openings. When the upper cover 2 and the flip-down lower cover 4 are in the closed position, the clearance openings of the upper cover 2 and the flip-down lower cover 4 combine to form an inlet hole for the power supply wire. As long as the diameter of the wire 5 is smaller than the inlet hole, it can be installed, thus adapting to the installation of wires 5 of different sizes.

[0027] Furthermore, the inner wall of the clearance opening is provided with a first serration 7 to increase the friction between the clearance opening and the wire 5. Further, the upper cover 2 is provided with a row of second serrations 8 behind the first serration 7.

[0028] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A junction box, characterized in that... include: Terminal block assembly, top cover, fixed bottom cover, and flip-down bottom cover; The fixed lower cover has a chamber for fixing the terminal assembly. The front end and rear end of the fixed lower cover along the length direction are respectively rotatably connected to the flip lower cover and the upper cover, so that the flip lower cover and the upper cover have an open position and a closed position relative to the fixed lower cover, respectively. When the flip lower cover and the upper cover are in the closed position, the upper cover and the flip lower cover cooperate to close the chamber. The upper cover and the flip-down lower cover are provided with screw holes and bolts, which are used to connect and fix the upper cover and the flip-down lower cover to each other in the closed position; the threaded portion of the bolt is necked so that the bolt, after being loosened, engages with the flip-down lower cover in the direction of detachment.

2. A junction box according to claim 1, characterized in that: The terminal block assembly has a wiring hole on the side facing the front end of the fixed lower cover.

3. A junction box according to claim 1, characterized in that: The front ends of the upper cover and the flip-down lower cover are respectively provided with clearance openings. When the upper cover and the flip-down lower cover are in the closed position, the clearance openings of the upper cover and the flip-down lower cover are combined to form an inlet hole for the power supply line.

4. A junction box according to claim 3, characterized in that: The inner wall of the clearance opening is provided with a first serration to increase the friction between the clearance opening and the wire.

5. A junction box according to claim 4, characterized in that: The top cover has a row of second serrations behind the first serration.

Images