A terminal block

Abstract

The utility model discloses a terminal box, including box body and box cover, the inside central place of box body is equipped with mounting seat, the top of mounting seat is installed in proper order and is pressed line board and press line board, the surface of line board is equipped with the arc -shaped groove for accommodating wire that sinks, the both sides of the front and rear of line board all are equipped with connecting plate, the front and rear of two opposite inner walls of box body all are seted up to have the locating slot, every locating slot all is provided with terminal post, the connecting plate respectively inserts into corresponding terminal post, the end of connecting plate towards line board extends and exceeds terminal post, make the clearance between terminal post with line board, the bottom of box body is equipped with the guide rail groove for matching installation guide rail, the utility model effectively solved the key problem such as wiring firmness, contact resistance, installation flexibility and splicing convenience, significantly improved the electrical performance, installation efficiency and user experience of terminal box.

Description

Technical Field

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

[0002] A junction box is an electrical enclosure used to house and protect wire / cable connections (joints, branches, terminations) and facilitate future maintenance. You can think of it as a "protective shell" and "transfer station" for wire connections.

[0003] Current rail-mounted junction boxes generally suffer from the following technical defects:

[0004] 1. Insufficient reliability of electrical connections: The internal terminal blocks are mostly flat plate structures, which have limited contact area with the wires during wiring, resulting in poor wire crimping stability and high contact resistance. This can easily cause abnormal heating at the connection points, posing a safety hazard.

[0005] 2. Lack of expansion flexibility: The lack of standardized splicing structure between the boxes makes it impossible to achieve rapid modular combination, resulting in low installation efficiency when deploying multiple boxes;

[0006] 3. Limited installation location: Traditional guide rail clips can only be fixed from the end of the guide rail. The installation position needs to be precisely reserved during construction. It cannot be flexibly installed at any position on the guide rail according to the needs of the site, which greatly limits the freedom of wiring.

[0007] Therefore, the applicant has made beneficial designs and found a way to solve the above problems. The technical solution to be introduced below is generated in this context. Utility Model Content

[0008] The present invention provides a junction box to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A junction box, comprising a box body and a box cover, characterized in that:

[0011] A mounting base is provided in the center of the inside of the box;

[0012] A terminal block and a wire clamping plate are sequentially installed on the top of the mounting base;

[0013] The terminal block surface is recessed with an arc-shaped groove for accommodating wires;

[0014] The terminal block is provided with connecting plates on both the front and rear sides;

[0015] Positioning grooves are provided on the front and rear parts of the two opposite inner walls of the box body;

[0016] Each of the positioning slots is provided with a terminal block;

[0017] The connecting plates are respectively inserted into the corresponding terminals;

[0018] The end of the connecting plate extends beyond the terminal block, creating a gap between the terminal block and the terminal block.

[0019] The bottom of the box is provided with a guide rail groove for matching and installing guide rails;

[0020] The front of the guide rail groove is provided with a retaining strip for limiting position;

[0021] A through hole is provided at the rear part of the bottom wall of the box;

[0022] A guide rail buckle for locking the guide rail is rotatably provided inside the through hole;

[0023] The through hole extends towards the bottom of the box to form a buckle groove, and the inner wall of the buckle groove is provided with a limiting groove;

[0024] The bottom of the guide rail buckle is provided with a stop block for abutting against the guide rail, and one side of the stop block is provided with a protruding edge that cooperates with the limiting groove;

[0025] The top surface of the stop has a sloping structure;

[0026] The front and rear parts of one outer side wall of the box are provided with inverted L-shaped splicing buckles;

[0027] The front and rear parts of the other opposite outer side wall of the box are provided with splicing grooves for matching the splicing buckles on the adjacent junction boxes.

[0028] Preferably, the top of the guide rail buckle is provided with a screwdriver slot for tightening operations.

[0029] Preferably, the lid is placed on top of the box body; the box body and the lid each have through lead sealing holes at two diagonal positions for threading lead sealing wire.

[0030] Preferably, mounting holes are provided on the front and rear sides of the bottom wall of the box to assist in installation and fixation.

[0031] Preferably, guide grooves are provided on the front and rear sides of the box cover, corresponding to the positions of the lead seal holes; the two side walls of the guide grooves have outwardly expanding arc-shaped surfaces.

[0032] Beneficial effects

[0033] The beneficial effects of this utility model are as follows:

[0034] 1. Enhance the reliability and safety of electrical connections:

[0035] By recessing an arc-shaped groove into the surface of the terminal block, the contact area between the wires and the terminal block is significantly increased. This design not only improves the mechanical stability of the wire crimping but also effectively reduces contact resistance, thereby greatly reducing the risk of abnormal overheating at the connection point and improving the long-term reliability and operational safety of the electrical connection.

[0036] 2. Optimize installation convenience and flexibility:

[0037] The rail mounting system comprises a rail groove at the bottom of the box, a front retaining strip, and a rear rotatable rail clip (with a stop, raised edge, and screwdriver slot), forming a highly efficient rail mounting mechanism. Simply insert the rail groove into the rail, and use a tool to rotate the rail clip to lock the stop in place. This allows for stepless adjustment and quick locking of the junction box at any position on the rail, making installation extremely convenient and flexible.

[0038] Modular splicing design: The inverted L-shaped splicing buckle and matching splicing groove on the side wall of the box allow multiple junction boxes to be quickly and stably spliced ​​horizontally through a simple snap-fit ​​action, which greatly simplifies the multi-box assembly and installation process and facilitates expanded applications.

[0039] 3. Improve structural stability and ease of maintenance:

[0040] The design of the connector plate being inserted into the terminal block and extending to form a gap, along with the positioning groove, ensures precise and stable installation of the terminal block and connector plate within the box.

[0041] The mounting holes on the front and back of the bottom wall of the box provide auxiliary fixing points, enhancing the overall installation strength. Through-hole lead-sealing holes diagonally located on the cover and box body facilitate the application of lead seals, ensuring the equipment is safe and tamper-proof.

[0042] The guide groove (with an outwardly flared arc surface) on the box cover, corresponding to the lead seal hole position, effectively guides the lead seal thread through, simplifying the sealing operation. Attached Figure Description

[0043] Figure 1 This is a three-dimensional structural diagram of the right side of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall left-side three-dimensional structure of this utility model;

[0045] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0046] Figure 4 This is a schematic diagram of the bottom structure of the box body of this utility model;

[0047] Figure 5 This is a schematic diagram of the guide rail buckle structure of this utility model.

[0048] The correspondence between the labels and component names in the attached figures is as follows:

[0049] 1. Box body; 2. Box cover; 3. Mounting base; 4. Terminal block; 5. Wire clamping plate; 6. Arc groove; 7. Connecting plate; 8. Positioning groove; 9. Terminal post; 10. Guide rail groove; 11. Clip; 12. Through hole; 13. Guide rail buckle; 14. Buckle groove; 15. Limiting groove; 16. Stop block; 17. Raised edge; 18. Splicing buckle; 19. Splicing groove; 20. Screwdriver groove; 21. Lead seal hole; 22. Mounting hole; 23. Guide groove. Detailed Implementation

[0050] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments.

[0054] like Figure 1-5 The diagram shown is a structural schematic of a junction box according to a preferred embodiment of the present invention.

[0055] In this embodiment, a junction box includes a box body 1 and a box cover 2, the box body 1 and the box cover 2 forming a complete cavity. A mounting base 3 is provided in the center of the box body 1. A terminal block 4 and a wire clamping plate 5 are sequentially mounted on the top of the mounting base 3. The surface of the terminal block 4 is recessed with an arc-shaped groove 6 for accommodating wires, increasing the contact area of ​​the wires. When installing wires, the wires are placed in the arc-shaped groove 6, the wire clamping plate 5 is pressed onto the top of the wires, and the wire clamping plate 5 and the terminal block 4 are locked to the top of the mounting base 3 with screws to fix the wires. The front and rear sides of the terminal block 4 are integrally formed. A connecting plate 7 is provided; positioning grooves 8 are provided on the front and rear parts of the two opposite inner walls of the housing 1; each positioning groove 8 is provided with a terminal post 9, which is used to connect wires; the positioning grooves 8 are used to position the terminal post 9 to prevent displacement of the terminal post 9 during wiring; the connecting plate 7 is inserted into the corresponding terminal post 9; the end of the connecting plate 7 extending beyond the terminal post 9 towards the terminal plate 4 creates a gap between the terminal post 9 and the terminal plate 4, so that when the wire is inserted from one end of the terminal post 9 during wiring, the end of the wire can extend from the other end of the terminal post 9, and when the screw on the terminal post 9 is tightened, the wire... The wire may slip due to the friction of the screw; however, the gap provides extra space for the wire, allowing a larger portion of the wire to remain within the terminal 9, thereby strengthening the connection between the wire and the terminal 9. The bottom of the housing 1 has a guide rail groove 10 for mounting a guide rail; the front of the guide rail groove 10 has a retaining clip 11; the rear of the bottom wall of the housing 1 has a through hole 12; a guide rail buckle 13 for locking the guide rail is rotatably disposed within the through hole 12; the through hole 12 extends towards the bottom of the housing 1 to form a buckle groove 14, the inner wall of which has a limiting groove 15; The bottom of the guide rail buckle 13 is provided with a stop block 16 for abutting the guide rail. One side of the stop block 16 is provided with a protruding edge 17 that cooperates with the limiting groove 15. The protruding edge 17 cooperates with the limiting groove 15 on the inner wall of the buckle groove 14 to realize the rotational limitation of the guide rail buckle 13. The top surface of the stop block 16 has a sloping structure. The front and rear parts of one outer side wall of the box body 1 are provided with inverted L-shaped splicing buckles 18. The front and rear parts of the other opposite outer side wall of the box body 1 are provided with splicing grooves 19 for matching the splicing buckles 18 on adjacent junction boxes. Through the cooperation of the splicing buckles 18 and the splicing grooves 19, the rapid horizontal splicing between multiple boxes 1 is realized.

[0056] In this embodiment, the top of the guide rail buckle 13 is provided with a screwdriver slot 20 for screwing operation, which is used for screwing with tools.

[0057] In this embodiment, the box cover 2 is placed on top of the box body 1; the box body 1 and the box cover 2 are provided with through lead sealing holes 21 at two diagonal positions for threading lead sealing wire.

[0058] In this embodiment, mounting holes 22 are respectively provided on the front and rear sides of the bottom wall of the box 1 for assisting in installation and fixing.

[0059] In this embodiment, guide grooves 23 are provided on the front and rear sides of the box cover 2, corresponding to the positions of the lead seal hole 21; the two side walls of the guide groove 23 have outwardly expanding arc-shaped surfaces, which facilitates the guidance of the lead seal line into the lead seal hole 21.

[0060] The junction box of this utility model can be installed, connected or set in a common mechanical way, and can be implemented as long as it can achieve its beneficial effect.

[0061] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0062] The above description provides a more detailed explanation of the present invention in conjunction with specific embodiments. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present invention.

Claims

1. A junction box, comprising a box body and a box cover, characterized in that: A mounting base is provided in the center of the inside of the box; A terminal block and a wire clamping plate are sequentially installed on the top of the mounting base; The terminal block surface is recessed with an arc-shaped groove for accommodating wires; The terminal block is provided with connecting plates on both the front and rear sides; Positioning grooves are provided on the front and rear parts of the two opposite inner walls of the box body; Each of the positioning slots is provided with a terminal block; The connecting plates are respectively inserted into the corresponding terminals; The end of the connecting plate extends beyond the terminal block, creating a gap between the terminal block and the terminal block. The bottom of the box is provided with a guide rail groove for matching and installing guide rails; The front of the guide rail groove is provided with a retaining strip for limiting position; A through hole is provided at the rear part of the bottom wall of the box; A guide rail buckle for locking the guide rail is rotatably provided inside the through hole; The through hole extends towards the bottom of the box to form a buckle groove, and the inner wall of the buckle groove is provided with a limiting groove; The bottom of the guide rail buckle is provided with a stop block for abutting against the guide rail, and one side of the stop block is provided with a protruding edge that cooperates with the limiting groove; The top surface of the stop has a sloping structure; The front and rear parts of one outer side wall of the box are provided with inverted L-shaped splicing buckles; The front and rear parts of the other opposite outer side wall of the box are provided with splicing grooves for matching the splicing buckles on the adjacent junction boxes.

2. A junction box according to claim 1, characterized in that: The top of the guide rail buckle has a screwdriver slot for tightening.

3. A junction box according to claim 1, characterized in that: The lid is placed on top of the box body; the box body and the lid both have through lead sealing holes at two diagonal positions for threading lead sealing wire.

4. A junction box according to claim 1, characterized in that: The box body has mounting holes on the front and rear sides of its bottom wall to assist in installation and fixation.

5. A junction box according to claim 3, characterized in that: The front and rear sides of the box cover are provided with guide grooves corresponding to the positions of the lead seal holes; the two side walls of the guide grooves have outwardly expanding arc-shaped surfaces.

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