PCB board direct connection type large current wall bushing

Abstract

This utility model relates to the field of connector technology, and more particularly to a PCB board direct-connection high-current through-wall terminal, including an insulating base, a conductive sheet, a wiring assembly, and a sealing ring. An external wiring portion protrudes from the insulating base, and an internal wiring portion is recessed on the insulating base. The internal wiring portion is smaller than the external wiring portion. A sealing ring surrounds the internal wiring portion of the insulating base, and mounting holes are provided on the outer side of the insulating base. An external partition divides the external wiring portion into several external wiring slots, and the internal wiring portion similarly has an internal partition dividing the internal wiring portion into the same number of internal wiring slots as the external wiring slots. The conductive sheet is integrally injection molded with the insulating base. One end of the conductive sheet is pre-embedded in the external wiring slot, and the other end is pre-embedded in the internal wiring slot, with the middle encased within the insulating base. Wiring assemblies are provided at both ends of the conductive sheet. This utility model provides a through-wall terminal integrating high-current transmission, multi-functional modularity, rapid installation, and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a PCB board direct-connection high-current through-wall terminal. Background Technology

[0002] With the development of hardware intelligence and the Internet of Things, electrical connections for various components and electrical equipment rely on terminal blocks, which are widely used in industrial production, communications, and household applications. A through-wall connector with integrated wiring and protection functions, disclosed in CN113314882A, includes an insulating body, a protective cover, and an insulating partition. The insulating body comprises a plastic insulating component, conductive parts, a bolt assembly, and a seal. This type of through-wall connector with integrated wiring and protection functions can simultaneously connect multiple different sets of wires and has a built-in IP protection rating. During use, it ensures that rainwater and dust from outside the installation cabinet cannot enter the cabinet through this product, effectively protecting the environment inside the cabinet and the safety of electronic components. The protective cover also prevents accidental electric shock to installation and maintenance personnel.

[0003] However, since it is only used as a power transmission interface, it requires additional components when encountering complex circuit connections that need to integrate signal, data or grounding functions. For example, when connecting to a PCB board, it needs to be soldered or have auxiliary fasteners, which takes up more space, has low installation efficiency, and is difficult to maintain. Therefore, a PCB board direct-connection high-current through-wall terminal is needed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a through-wall terminal that integrates high current transmission, multi-functional modularity, rapid installation, and high reliability, thereby solving the problems of low current capacity, single function, and complex installation in the prior art.

[0005] Specifically, a PCB board direct-connection high-current through-wall terminal includes an insulating base, a conductive sheet, a wiring assembly, and a sealing ring. An external wiring portion is provided on the insulating base, and an internal wiring portion is provided on the insulating base. The internal wiring portion is smaller than the external wiring portion. A sealing ring is provided around the internal wiring portion on the insulating base, and a mounting hole is provided on the outer side of the insulating base.

[0006] The external wiring section is equipped with an external partition to divide the external wiring section into several external wiring slots, and the internal wiring section is also equipped with an internal partition to divide the internal wiring section into the same number of internal wiring slots as the external wiring slots.

[0007] The number of conductive sheets is the same as that of the external wiring groove and the internal wiring groove. The conductive sheets are integrally injection molded with the insulating base. One end of the conductive sheet is pre-embedded in the external wiring groove, and the other end is pre-embedded in the internal wiring groove. The middle is wrapped in the insulating base. Both ends of the conductive sheet are equipped with wiring assemblies.

[0008] Wiring components include bolts and / or nuts.

[0009] Preferably, the external wiring channels are arranged in a stepped pattern.

[0010] Preferably, an insulating partition is inserted at the end of the outer partition.

[0011] Preferably, the insulating base is provided with a mounting flange, and the mounting holes are located on the mounting flange. The mounting hole arrangement is designed with an irregular shape to prevent mistake-proofing.

[0012] Preferably, an insulating plug is provided on the mounting hole adjacent to the external wiring slot.

[0013] Preferably, the internal wiring grooves are arranged in a stepped pattern.

[0014] Preferably, the inner wiring groove is divided into three layers, with four inner wiring grooves in each layer, and the outer wiring grooves are also set accordingly.

[0015] Preferably, the wiring assembly connected to the conductive sheet embedded in the outer wiring groove is a bolt and a nut. The bolt passes through the conductive sheet and the bolt head is embedded in the outer wiring groove. The wiring assembly connected to the conductive sheet embedded in the inner wiring groove is a press-fit nut. The press-fit nut is press-fitted to the conductive sheet and embedded in the inner wiring groove.

[0016] Preferably, at least one bolt has a double-threaded structure, with a large thread at the lower end connected to a large nut, and a small thread at the upper end connected to a small nut, which can be used as an NTC interface.

[0017] Preferably, the outer wiring slot and the inner wiring slot connected by the same conductive sheet are marked with the same marking. Beneficial effects

[0018] The product is a single unit consisting of a conductor and a plastic shell, which has high mechanical strength, strong temperature resistance, can transmit high current, has high reliability, and provides reliable waterproof sealing performance.

[0019] The conductive terminal end is designed to connect to the integrated internal wiring section, which can be directly attached to the gold-plated through holes or high-current pads on the PCB board through the conductor, without soldering, and can be installed quickly.

[0020] It integrates multi-functional modular design, with large and small thread design, and the bolt has a reserved NTC interface with small thread for connecting an external temperature sensor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the bottom structure of an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the rear structure of an embodiment of the present utility model;

[0024] Figure 4 This is an exploded view of the overall structure of an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the conductive sheet and wiring assembly structure according to an embodiment of the present utility model;

[0026] Insulating base-1, external wiring section-11, external wiring groove-1101, insulating partition-1102, internal wiring section-12, internal wiring groove-1201, mounting hole-13, conductive sheet-2, wiring assembly-3, bolt-31, large thread-311, small thread-312, nut-32, large nut-321, small nut-322, press-fit nut-33, sealing ring-4, insulating plug-5. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Furthermore, it should be understood in this utility model that the directions or positional relationships indicated by "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "top", "bottom", "inner", and "outer" are based on the directions or positional relationships shown in the accompanying drawings and are only for the purpose of describing this utility model. They are not intended to indicate or imply that the device or element referred to must have this specific orientation or operate in a specific orientation, and should not be construed as a limitation of this utility model.

[0029] As attached Figure 1 To be continued Figure 5 As shown:

[0030] A PCB board direct-connection high-current through-wall terminal includes an insulating base 1, a conductive sheet 2, a wiring assembly 3, and a sealing ring 4. An external wiring portion 11 is protruding on the insulating base 1, and an internal wiring portion 12 is recessed on the insulating base 1. The internal wiring portion 12 is smaller than the external wiring portion 11. The sealing ring 4 is provided around the internal wiring portion 12 on the insulating base 1, and a mounting hole 13 is provided on the outer side of the insulating base 1.

[0031] The external wiring section 11 is provided with an external partition to divide the external wiring section 11 into several external wiring slots 1101, and the internal wiring section 12 is also provided with an internal partition to divide the internal wiring section 12 into the same number of internal wiring slots 1201 as the external wiring slots 1101.

[0032] The number of conductive sheets 2 is the same as that of the outer wiring groove 1101 and the inner wiring groove 1201. The conductive sheets 2 and the insulating base 1 are integrally injection molded. One end of the conductive sheet 2 is embedded in the outer wiring groove 1101, and the other end is embedded in the inner wiring groove 1201. The middle part is wrapped in the insulating base 1. Both ends of the conductive sheet 2 are provided with wiring components 3.

[0033] In this embodiment, the inner wiring slots 1201 are arranged neatly and regularly within the inner wiring section 12. Furthermore, through the irregularly shaped conductive sheet 2, the inner wiring section 12 is smaller than the outer wiring section 11, which means that the inner wiring section 12 is arranged more compactly, reducing the volume of the internal wiring points of the equipment and facilitating direct connection with the PCB board.

[0034] In this embodiment, the insulating base 1 on the outer side of the external wiring part 11 has a mounting groove that is compatible with the sealing ring 4, and the sealing ring 4 is filled in the mounting groove.

[0035] In this implementation, the use of integrated injection molding of the insulating base and conductive sheet ensures both mechanical strength and electrical isolation.

[0036] In this embodiment, components such as conductive sheets are made of high-conductivity copper alloy with nickel plating to reduce contact resistance, increase current carrying capacity, and reduce temperature rise.

[0037] Furthermore, the wiring assembly 3 includes bolts and / or nuts.

[0038] Optionally, the wiring assembly 3 can be a bolt, nut, or a combination of bolts and nuts, and different wiring assemblies can be selected according to different wiring requirements.

[0039] In this embodiment, preferably, the wiring assembly 3 connected to the conductive sheet 2 embedded in the outer wiring groove 1101 is a bolt 31 and a nut 32. The bolt 31 passes through the conductive sheet 2, and the bolt head is embedded in the outer wiring groove 1101. The wiring assembly 3 connected to the conductive sheet 2 embedded in the inner wiring groove 1201 is a press-fit nut 33. The press-fit nut 33 is press-fitted to the conductive sheet 2 and embedded in the inner wiring groove 1201. In this embodiment, the screw press-fit locking structure is used instead of welding, which increases the current carrying capacity, reduces the temperature rise, supports high current and is easy to maintain, reduces installation time, and ensures a stable and reliable connection method and working environment.

[0040] In this embodiment, the external wiring troughs 1101 are arranged in a stepped manner. This design facilitates wiring of the wiring components on each layer and improves installation efficiency.

[0041] The external wiring trough 1101 can also be distributed in a plane, but this design makes it inconvenient to operate the wiring components and requires special L-shaped wiring noses for connection, resulting in low installation efficiency.

[0042] Furthermore, an insulating partition 1102 is inserted into the end of the outer partition. After the insulating partition 1102 is inserted into the groove at the end of the outer partition, it is firmly fixed to the outer partition by an interference fit, making it difficult to fall off and achieving effective electrical isolation.

[0043] Furthermore, the insulating base 1 is provided with a mounting flange, and the mounting hole 13 is provided on the mounting flange. The mounting hole arrangement is designed with an irregular shape to prevent mistaken installation. In this embodiment, an asymmetrical hole spacing is adopted to prevent reverse installation. In this embodiment, the insulating base 1 is provided with mounting flanges on both sides, which are fixed to the equipment panel by bolts or clips to achieve "through-wall" installation.

[0044] Furthermore, an insulating plug 5 is provided on the mounting hole 13 near the external wiring channel 1101. The insulating plug 5 can isolate the wiring lug from the mounting bolt on the mounting hole 13 during installation and use, thus ensuring electrical safety.

[0045] Furthermore, the internal wiring grooves 1201 are arranged in a stepped manner, which can effectively achieve physical isolation to ensure electrical safety on the one hand, and reduce the amount of conductive sheet material used on the other hand, thereby reducing production costs.

[0046] In this embodiment, the inner wiring groove 1201 is preferably divided into three layers, with four inner wiring grooves 1201 in each layer. The outer wiring groove 1101 is also set accordingly. Each conductive sheet interface connects to different functional areas. The outer wiring groove 1101 and the inner wiring groove 1201 connected to the same conductive sheet 2 are marked with the same markings, such as R / T / S / N corresponding to ground, live, and neutral signals, respectively. Power supply, signal, and grounding functions are integrated on a single terminal body, reducing the size of the equipment.

[0047] In this embodiment, the gold-plated through holes or high-current pads of the PCB board can be directly locked with a dedicated conductor without soldering. The dedicated conductor can be a conductive stud. By using conductive studs of different lengths to match the rivet nuts 33 on different steps, the PCB boards can be connected on a uniform plane. The PCB board refers to the PCB board of the component. The traditional connection method is to fix it with solder pins. However, this application now uses threaded locking to fasten the conductive parts of the PCB board, thereby avoiding the problems of low efficiency and difficult maintenance caused by soldering during PCB connection and improving the convenience of connection.

[0048] In this implementation, the three-phase parallel module design of the through-wall terminal is mainly suitable for installation on inverters. It can be directly connected to the PCB board inside the inverter, forming a separate connection between the internal and external parts of the inverter. It has an IP protection rating. The external wiring can be used as a whole, or as a single phase, or as a combination thereof, without interference. It plays multiple roles, realizes multiple uses for one product, reduces costs and corresponding safety risks, ensures a stable and reliable connection method and a safe operating environment, and is suitable for high-frequency vibration and high-power scenarios such as energy storage equipment and industrial power supplies.

[0049] In this embodiment, the PCB board direct-connect high-current through-wall terminal has multiple functions. It integrates power, signal and grounding functions on the original single metal conductive terminal, effectively reducing the size of the equipment. In addition, the three-phase parallel copper conductors are riveted and injection molded to form an integrated structure to realize through-wall wiring. Its advantages are that the current can be distributed, the resistance is reduced, the safety of use is improved, and the anti-misinsertion and high sealing reliability are improved.

[0050] Furthermore, at least one bolt has a double-threaded structure, with a large thread 311 at the lower end and a large nut 321 connected to it, and a small thread 312 at the upper end and a small nut 322 connected to it. The bolt has an NTC interface for the small nut 322, which can be connected to an external temperature sensor to monitor the operating temperature of the conductive sheet 2.

[0051] In this implementation, the two sets of bolts at the top are configured with a double-threaded structure.

[0052] In this embodiment, the insulating base 1 is also provided with several through-holes for heat dissipation, which can achieve heat dissipation on the one hand and reduce material usage and save costs on the other hand.

[0053] In this embodiment, the insulating base 1 is also provided with several reinforcing ribs to provide stronger structural stability for the insulating base.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A PCB board direct-connection high-current through-wall terminal, comprising an insulating base (1), a conductive sheet (2), a wiring assembly (3), and a sealing ring (4), characterized in that: An external wiring portion (11) is provided on the insulating base (1), and an internal wiring portion (12) is provided on the insulating base (1). The internal wiring portion (12) is smaller than the external wiring portion (11). A sealing ring (4) is provided around the internal wiring portion (12) of the insulating base (1), and an installation hole (13) is provided on the outside of the insulating base (1). The external wiring section (11) is provided with an external partition to divide the external wiring section (11) into a number of external wiring slots (1101), and the internal wiring section (12) is also provided with an internal partition to divide the internal wiring section (12) into the same number of internal wiring slots (1201) as the external wiring slots (1101). The number of conductive sheets (2) is the same as that of the outer wiring groove (1101) and the inner wiring groove (1201), and the conductive sheets (2) and the insulating base (1) are integrally injection molded. One end of the conductive sheet (2) is embedded in the outer wiring groove (1101), the other end is embedded in the inner wiring groove (1201), and the middle is wrapped in the insulating base (1). Both ends of the conductive sheet (2) are provided with wiring assemblies (3). The wiring assembly (3) includes bolts and / or nuts.

2. The PCB board direct connect high current feed-through terminal of claim 1, wherein: The external wiring channels (1101) are arranged in a stepped pattern.

3. The PCB board direct connect high current feed-through terminal of claim 2, wherein: An insulating partition (1102) is inserted at the end of the outer partition.

4. The PCB board direct connect high current feed-through terminal of claim 3, wherein: The insulating base (1) is provided with a mounting flange, and the mounting hole (13) is provided on the mounting flange. The mounting hole is arranged in an irregular shape to prevent mistakes.

5. The PCB board direct connect high current feed-through terminal of claim 4, wherein: An insulating plug (5) is provided on the mounting hole (13) near the external wiring groove (1101).

6. The PCB board direct connect high current feed-through terminal of claim 2, wherein: The internal wiring groove (1201) is distributed in a stepped manner.

7. The PCB board direct connect high current feed-through terminal of claim 6, wherein: The inner wiring groove (1201) is divided into three layers, with four inner wiring grooves (1201) in each layer. The outer wiring groove (1101) is also set accordingly.

8. The PCB board direct connect high current feed-through terminal of claim 1, wherein: The wiring assembly (3) connected to the conductive sheet (2) embedded in the outer wiring groove (1101) is a bolt (31) and a nut (32). The bolt (31) passes through the conductive sheet (2) and the bolt head is embedded in the outer wiring groove (1101). The wiring assembly (3) connected to the conductive sheet (2) embedded in the inner wiring groove (1201) is a press-fit nut (33). The press-fit nut (33) is press-fitted to the conductive sheet (2) and embedded in the inner wiring groove (1201).

9. The PCB board direct connect high current feed-through terminal of claim 8, wherein: The at least one bolt (31) has a double thread structure, with a large thread (311) at the lower end and connected to a large nut (321), and a small thread (312) at the upper end and connected to a small nut (322).

10. The PCB board direct connecting large current feed-through terminal according to any one of claims 1-9, characterized in that: The outer wiring groove (1101) and the inner wiring groove (1201) connected to the same conductive sheet (2) are marked with the same mark.

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