Lead seal structure for terminal

Abstract

This application relates to a lead seal structure for terminal blocks, belonging to the field of terminal block technology. It includes a base plate, a top shell assembly, and a lead seal assembly. The top shell assembly includes a front top shell and a rear top shell mounted above the base plate. Guide blocks are fixedly connected to both sides of the top of the front and rear top shells. This application, through a design with no protruding ribs and a 90-degree bend in the lead seal hole, solves the problem of easy damage to traditional external lead seals, improving tamper resistance and concealment. It also reduces the difficulty of mold design for the internal bend structure, avoids mold damage, and improves production efficiency. The lead seal assembly achieves rapid assembly with the top shell assembly through the sliding connection of the guide groove and guide block, and the snap-fit ​​cooperation of the elastic buckle and slot. This solves the problems of complex internal lead seal structures and cumbersome assembly in existing systems. Heat dissipation holes ensure long-term stable operation of the equipment, and reinforcing blocks improve the structural reliability of the lead seal assembly. The overall structure is simple and practical, comprehensively optimizing the shortcomings of existing technologies.

Description

Technical Field

[0001] This application relates to the field of terminal block technology, and in particular to the lead seal structure of terminal blocks. Background Technology

[0002] As a key component of electrical connections, the safety and reliability of terminal blocks are of paramount importance.

[0003] In recent years, with the increasing safety requirements of power equipment, higher demands have been placed on the tamper-proof performance of lead seal structures. The industry is increasingly inclined to develop internal lead seal structures to improve security and concealment. However, the design and manufacturing of molds for internal lead seal structures are quite challenging, especially those involving internal bends, which can easily lead to mold damage or low production efficiency. To address these issues, a lead seal structure for wiring terminals has been proposed. Utility Model Content

[0004] The purpose of this application is to provide a lead-sealed structure for wiring terminals. By designing the inner wall of the lead-sealed hole to be without protruding ribs and with a 90-degree bend, the anti-tampering performance is improved, and the problems mentioned in the background art are solved.

[0005] The lead seal structure for the terminal block provided in this application adopts the following technical solution: The lead seal structure for the terminal block includes a base plate, a top shell assembly, and a lead seal assembly. The top shell assembly includes a front top shell and a rear top shell installed above the base plate. Guide blocks are fixedly connected to both sides of the top of the front top shell and the rear top shell. Two slots are opened on the outer surface of the front top shell and the rear top shell. Lead seal blocks are fixedly connected to the upper surface of the front top shell and the rear top shell. Each lead seal block has a lead seal hole with a 90-degree bend inside, and the inner wall of the lead seal hole has no protruding ribs.

[0006] The lead seal assembly includes a first lead seal cover plate and a second lead seal cover plate. Guide grooves are provided on both sides of the inner walls of the first and second lead seal cover plates. The guide grooves are slidably connected to guide blocks. Elastic buckles are fixedly connected to both ends of the first lead seal cover plate and the guide grooves. The elastic buckles are engaged with the inner walls of the grooves. Connecting plates are fixedly connected to the upper surfaces of the first lead seal cover plate and the guide grooves. Each connecting plate has two connecting holes inside. The connecting holes are adapted to lead seal holes with a 90-degree bend.

[0007] By adopting the above technical solution, the lead seal hole, with its design of no protruding ribs and a 90-degree bend, not only solves the problem of easy damage to traditional external lead seals and improves the concealment and anti-tampering performance of the lead seal structure, but also reduces the mold design difficulty of the internal bend structure, avoids mold damage caused by complex structure, and improves production efficiency. At the same time, the lead seal assembly achieves rapid assembly of the lead seal assembly and the top shell assembly through the sliding connection of the guide groove and guide block and the snap-fit ​​of the elastic buckle and the slot. The overall structure is simple and highly practical, solving the problems of complex internal lead seal structure and cumbersome assembly in the prior art. After snap-fit, the lead seal line can be passed through the connecting hole and the lead seal hole in sequence for tight locking, thereby achieving the effect of not being able to be directly disassembled.

[0008] Preferably, a circuit board is mounted on the top of the base plate, and a first terminal and a second terminal are soldered to both sides of the circuit board.

[0009] By adopting the above technical solution, the circuit board is installed on the top of the base plate, and the first and second terminals on both sides can realize the electrical connection of different lines respectively, which ensures the stability of the overall structure and the safety of the electrical connection, and meets the basic requirements of electrical connectors for reliability.

[0010] Preferably, the front top shell has eight first round holes and eight first square holes on one side. The positions of the eight first round holes are adapted to the positions of the screw holes on the top of the first terminal block, and the positions of the eight first square holes are adapted to the positions of the wiring ports on the side of the first terminal block.

[0011] By adopting the above technical solution, the first round hole is matched with the top screwing hole of the first terminal, and the first square hole is matched with the side wiring port of the first terminal, so that the front top shell can accurately cover the outside of the first terminal. This does not interfere with the normal wiring and screwing operation of the first terminal, and the sealing effect of the front top shell can form protection, providing a stable installation carrier for the lead seal assembly, while ensuring the convenience of wiring operation.

[0012] Preferably, the rear top shell has four second round holes and four second square holes on one side. The positions of the four second round holes are adapted to the positions of the top screw holes of the second terminal block, and the positions of the four second square holes are adapted to the positions of the side wiring ports of the second terminal block.

[0013] By adopting the above technical solution, the second round hole is matched with the top screw hole of the second terminal, and the second square hole is matched with the side wiring port of the second terminal. This is similar to the function of the front top shell, ensuring that the rear top shell can accurately cover the outside of the second terminal. This forms protection without affecting the normal use of the second terminal, providing a guarantee for the alignment and installation of the lead seal structure and improving the overall adaptability of the structure.

[0014] Preferably, the outer surfaces of both the front and rear top shells are provided with uniformly distributed heat dissipation holes.

[0015] By adopting the above technical solution, the evenly distributed heat dissipation holes can enhance the ventilation and heat dissipation performance of the front and rear top shells, avoid the aging of components caused by heat accumulation in the first and second terminals during long-term operation, extend the service life of the lead seal structure and terminals, and ensure the reliability of electrical connections.

[0016] Preferably, each of the connecting plates has two reinforcing blocks fixedly connected to its outer surface, and the bottom ends of the four reinforcing blocks are respectively fixedly connected to the upper surfaces of the first lead seal cover and the second lead seal cover.

[0017] By adopting the above technical solution, the reinforcing block can enhance the structural strength of the connecting plate, prevent the connecting plate from deforming due to external forces during lead sealing operations or long-term use, ensure that the connecting hole and the lead sealing hole always maintain precise fit, guarantee the stability of lead sealing wire installation, and improve the structural reliability of the lead sealing assembly.

[0018] Preferably, the four slots are located directly above the four guide blocks.

[0019] By adopting the above technical solution, the positional correspondence between the slot and the guide block ensures that when the lead seal assembly slides along the guide block through the guide groove, the elastic buckle can accurately engage in the slot, avoiding assembly jamming or loosening of the connection due to misalignment. This improves the smoothness of the assembly of the top shell assembly and the lead seal assembly and the firmness of the connection, and simplifies the assembly process.

[0020] Preferably, external limiting components are installed at each of the four corners of the base plate, and the four external limiting components are respectively adapted to two corners of the front top shell and the rear top shell.

[0021] By adopting the above technical solution, the external limiting component is adapted to the corners of the front and rear top shells, which can protect the corners of the front and rear top shells, avoid damage to components caused by collisions during assembly or use, and enhance the sealing performance of the overall structure, further improving the anti-tampering performance of the lead seal structure, which meets the high requirements of power equipment for safety protection.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] This terminal block lead seal structure, with its lead seal hole without protruding ribs and featuring a 90-degree bend, solves the problem of traditional external lead seals being easily damaged, improving tamper resistance and concealment. It also reduces the difficulty of mold design for the internal bend structure, avoiding mold damage and improving production efficiency. The lead seal assembly achieves rapid assembly with the top shell assembly through the sliding connection of the guide groove and guide block, and the snap-fit ​​engagement of the elastic buckle and slot. This solves the problems of complex internal lead seal structures and cumbersome assembly in existing systems. The heat dissipation holes ensure long-term stable operation of the equipment, and the reinforcing blocks improve the structural reliability of the lead seal assembly. The overall structure is simple and practical, comprehensively optimizing the shortcomings of existing technologies. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view structure of this application;

[0025] Figure 2 This is a schematic diagram of the overall side view structure of this application;

[0026] Figure 3 This is a schematic diagram of the overall exploded structure of this application;

[0027] Figure 4 For this application Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0028] Figure 5 This is a schematic diagram of a partial explosion structure in this application.

[0029] In the picture:

[0030] 1. Base plate; 2. Top shell assembly; 201. Front top shell; 202. Rear top shell; 203. First round hole; 204. Second round hole; 205. Guide block; 206. Slot; 207. Lead seal block; 208. Lead seal hole; 209. First square hole; 210. Heat dissipation hole; 211. Second square hole; 3. Lead seal assembly; 301. First lead seal cover plate; 302. Second lead seal cover plate; 303. Guide groove; 304. Elastic buckle; 305. Connecting plate; 306. Connecting hole; 307. Reinforcing block; 4. External limiting assembly; 5. Circuit board; 6. First terminal block; 7. Second terminal block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0032] Example 1: Lead seal structure for wiring terminals, refer to Figure 1 , Figure 3 and Figure 4The system includes a base plate 1, a top shell assembly 2, and a lead seal assembly 3. The top shell assembly 2 includes a front top shell 201 and a rear top shell 202 mounted on the base plate 1. Guide blocks 205 are fixedly connected to both sides of the top of the front top shell 201 and the rear top shell 202. Two slots 206 are opened on the outer surface of the front top shell 201 and the rear top shell 202. Lead seal blocks 207 are fixedly connected to the upper surface of the front top shell 201 and the rear top shell 202. Each lead seal block 207 has a lead seal hole 208 with a 90-degree bend inside, and the inner wall of the lead seal hole 208 has no protruding ribs.

[0033] Reference Figure 2 , Figure 3 and Figure 5 A circuit board 5 is mounted on top of the base plate 1. First terminals 6 and second terminals 7 are soldered to both sides of the circuit board 5. The circuit board 5, mounted on top of the base plate 1, allows for electrical connections between different circuits via its first terminals 6 and second terminals 7, ensuring the stability of the overall structure and the safety of the electrical connections. This meets the basic reliability requirements for electrical connectors. Eight first circular holes 203 and eight first square holes 209 are provided on one side of the front top shell 201. The positions of the eight first circular holes 203 are aligned with the screw holes on the top of the first terminals 6. The positions of the eight first square holes 209 are matched with the positions of the wiring ports on the side of the first terminal 6, the first round hole 203 is matched with the position of the screw hole on the top of the first terminal 6, and the first square holes 209 are matched with the positions of the wiring ports on the side of the first terminal 6. This allows the front top cover 201 to accurately cover the outside of the first terminal 6, without interfering with the normal wiring and screwing operations of the first terminal 6. At the same time, the front top cover 201 can form protection through its sealing effect, providing a stable installation carrier for the lead seal assembly 3, while ensuring the convenience of wiring operations.

[0034] Reference Figure 2 , Figure 3 and Figure 5The rear top cover 202 has four second round holes 204 and four second square holes 211 on one side. The positions of the four second round holes 204 are adapted to the positions of the top screw holes of the second terminal 7, and the positions of the four second square holes 211 are adapted to the positions of the side wiring ports of the second terminal 7. The matching of the second round holes 204 with the top screw holes of the second terminal 7 and the matching of the second square holes 211 with the side wiring ports of the second terminal 7 serves the same purpose as the front top cover 201, ensuring that the rear top cover 202 can accurately cover the outside of the second terminal 7. Without affecting the normal use of the second terminal 7, a protective barrier is formed, which provides a guarantee for the alignment and installation of the lead seal structure and improves the adaptability of the overall structure. The outer surfaces of the front top shell 201 and the rear top shell 202 are provided with evenly distributed heat dissipation holes 210. The evenly distributed heat dissipation holes 210 can enhance the ventilation and heat dissipation performance of the front top shell 201 and the rear top shell 202, avoid the aging of components caused by heat accumulation in the first terminal 6 and the second terminal 7 during long-term operation, extend the service life of the lead seal structure and the terminal, and ensure the reliability of the electrical connection.

[0035] Example 2: Lead seal structure for wiring terminals, refer to Figure 3 , Figure 4 and Figure 5 Based on the same concept as Embodiment 1 above, this embodiment proposes a lead seal assembly 3 including a first lead seal cover plate 301 and a second lead seal cover plate 302. Guide grooves 303 are provided on both sides of the inner walls of the first lead seal cover plate 301 and the second lead seal cover plate 302. The guide grooves 303 are slidably connected to guide blocks 205. Elastic buckles 304 are fixedly connected to both ends of the first lead seal cover plate 301 and the guide grooves 303. The elastic buckles 304 are engaged with the inner walls of the slots 206. Connecting plates 305 are fixedly connected to the upper surfaces of the first lead seal cover plate 301 and the guide grooves 303. Each connecting plate 305 has a [missing information - likely a design element or feature]. Two connecting holes 306 are adapted to the lead seal hole 208 with a 90-degree bend. Two reinforcing blocks 307 are fixedly connected to the outer surface of each connecting plate 305. The bottom ends of the four reinforcing blocks 307 are respectively fixedly connected to the upper surfaces of the first lead seal cover plate 301 and the second lead seal cover plate 302. The reinforcing blocks 307 can enhance the structural strength of the connecting plate 305, prevent the connecting plate 305 from deforming due to external force during lead sealing operation or long-term use, ensure that the connecting hole 306 and the lead seal hole 208 always maintain a precise fit, ensure the stability of the lead seal wire installation, and improve the structural reliability of the lead seal assembly 3.

[0036] Reference Figure 2 , Figure 3 and Figure 5Four slots 206 are located directly above four guide blocks 205. The positional correspondence between the slots 206 and the guide blocks 205 ensures that when the lead seal assembly 3 slides along the guide block 205 via the guide groove 303, the elastic buckle 304 can accurately engage in the slots 206, avoiding assembly jamming or loosening due to misalignment. This improves the smoothness of assembly and the firmness of connection between the top shell assembly 2 and the lead seal assembly 3, and simplifies the assembly process. External limiting components 4 are installed at the four corners of the base plate 1. The four external limiting components 4 are adapted to the two corners of the front top shell 201 and the rear top shell 202, respectively. The external limiting components 4 adapt to the corners of the front top shell 201 and the rear top shell 202, which can protect the corners of the front top shell 201 and the rear top shell 202, avoiding damage to components due to collisions during assembly or use. At the same time, it enhances the sealing performance of the overall structure and further improves the anti-tampering performance of the lead seal structure, meeting the high safety protection requirements of power equipment.

[0037] The implementation principle of this application embodiment is as follows: The base plate 1 serves as the basic carrier, and the circuit board 5 above it achieves electrical connection of the circuit through the first terminal 6 and the second terminal 7 welded on both sides. The front top shell 201 and the rear top shell 202 precisely cover the outside of the first terminal 6 and the second terminal 7, respectively. The first round hole 203 and the first square hole 209 on the front top shell 201, and the second round hole 204 and the second square hole 211 on the rear top shell 202 are respectively adapted to the twisting hole and the connection port of the corresponding terminal, ensuring that normal wiring operation is not affected while forming a preliminary closed protection; subsequently, the first lead seal cover plate 301 and the second lead seal are used to further seal the circuit. The guide groove 303 on the inner wall of the cover plate 302 slides along the guide block 205 of the top shell assembly 2, so that the elastic buckle 304 is engaged in the slot 206 to complete the fixation. At this time, the connecting hole 306 on the connecting plate 305 is precisely aligned with the lead sealing hole 208 in the lead sealing block 207. The reinforcing block 307 ensures that the connecting plate 305 does not deform to maintain the alignment. Finally, the lead sealing line passes through the connecting hole 306 and the 90-degree bend lead sealing hole 208 in sequence and locks it. Because the lead sealing hole 208 has no protruding ribs and is hidden inside, it cannot be directly contacted or disassembled from the outside. The heat dissipation hole 210 avoids heat accumulation that affects performance, and finally achieves the comprehensive effect of anti-tampering, easy assembly and stable operation.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A terminal block sealing structure, comprising a base plate (1), a top shell assembly (2), and a sealing assembly (3), characterized in that: The top shell assembly (2) includes a front top shell (201) and a rear top shell (202) installed above the base plate (1). Guide blocks (205) are fixedly connected to both sides of the top of the front top shell (201) and the rear top shell (202). Two slots (206) are opened on the outer surface of the front top shell (201) and the rear top shell (202). Lead seal blocks (207) are fixedly connected to the upper surface of the front top shell (201) and the rear top shell (202). Each lead seal block (207) has a lead seal hole (208) with a 90-degree bend inside, and the inner wall of the lead seal hole (208) has no protruding ribs. The lead seal assembly (3) includes a first lead seal cover plate (301) and a second lead seal cover plate (302). Guide grooves (303) are provided on both sides of the inner walls of the first lead seal cover plate (301) and the second lead seal cover plate (302). The guide grooves (303) are slidably connected to the guide block (205). Elastic buckles (304) are fixedly connected to both ends of the first lead seal cover plate (301) and the guide groove (303). The elastic buckles (304) are snapped into the inner wall of the slot (206). Connecting plates (305) are fixedly connected to the upper surfaces of the first lead seal cover plate (301) and the guide groove (303). Each connecting plate (305) has two connecting holes (306) inside. The connecting holes (306) are adapted to the 90-degree bend of the lead seal hole (208).

2. The lead seal structure for the wiring terminal according to claim 1, characterized in that: A circuit board (5) is mounted on the top of the base plate (1), and a first terminal (6) and a second terminal (7) are welded to both sides of the circuit board (5).

3. The lead seal structure for the wiring terminal according to claim 1, characterized in that: The front top shell (201) has eight first round holes (203) and eight first square holes (209) on one side. The positions of the eight first round holes (203) are adapted to the positions of the top screw holes of the first terminal (6), and the positions of the eight first square holes (209) are adapted to the positions of the wiring ports on the side of the first terminal (6).

4. The lead seal structure for the wiring terminal according to claim 1, characterized in that: The rear top shell (202) has four second round holes (204) and four second square holes (211) on one side. The positions of the four second round holes (204) are adapted to the positions of the top screw holes of the second terminal (7), and the positions of the four second square holes (211) are adapted to the positions of the side wiring ports of the second terminal (7).

5. The lead seal structure for the wiring terminal according to claim 1, characterized in that: The outer surfaces of both the front top shell (201) and the rear top shell (202) are provided with evenly distributed heat dissipation holes (210).

6. The lead seal structure for the wiring terminal according to claim 1, characterized in that: Two reinforcing blocks (307) are fixedly connected to the outer surface of each of the connecting plates (305), and the bottom ends of the four reinforcing blocks (307) are fixedly connected to the upper surfaces of the first lead seal cover plate (301) and the second lead seal cover plate (302), respectively.

7. The lead seal structure for the wiring terminal according to claim 1, characterized in that: The four slots (206) are located directly above the four guide blocks (205).

8. The lead seal structure for the wiring terminal according to claim 1, characterized in that: External limiting components (4) are installed at the four corners of the base plate (1), and the four external limiting components (4) are respectively adapted to the two corners of the front top shell (201) and the rear top shell (202).

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