Anti-interference through-wall high-current terminal directly connected with PCB (Printed Circuit Board)

Abstract

The utility model provides an anti-interference through-wall type large current terminal directly connected with a PCB, one end of an equipment end main body is movably nested and butted with a protective cover, a bottom groove of the equipment end main body is internally provided with a sealing ring B, one end of the equipment end main body is provided with a lower red copper conducting strip and an upper red copper conducting strip, and the other end of the equipment end main body is provided with a sealing ring B; a pressing rivet nut is in spiral butt joint between the lower red copper conducting strip and the upper red copper conducting strip, a heat-shrinkable sleeve is arranged at the end, close to the upper red copper conducting strip, of the equipment end body, a sealing ring A surrounds the outer side of the equipment end body, and an E-shaped clamping spring, a shaft sleeve, a wabbler combination screw and a hexagon socket head cylindrical end set screw are embedded into the inner side of the equipment end body. According to the utility model, the through-wall terminal can be directly connected with the PCB in the inverter under the condition that the power line does not need to be specially lengthened and increased, and the cost is not increased, so that the cost and corresponding safety risk points are reduced, and a stable and reliable connection mode and a safe use environment are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic connectors, and more specifically to a through-the-wall high-current terminal with anti-interference function and directly connected to a PCB board. Background Art

[0002] The through-the-wall high-current terminal is one of the terminal blocks. The through-the-wall high-current terminal consists of an insulating base, an insulating partition, and a wire piece. The insulating base is integrated. The wiring piece is seated on the insulating base and placed in the insulating partition. The wiring piece includes a wire clamp, a screw, a nut, and a support frame. The support frame is U-shaped. The wire clamp is placed in the support frame. The nuts and screws press the wire clamp along the long holes at both end faces of the U-shaped support frame. The wire clamp consists of an upper wire clamp and a conductive sheet. Technical inspiration for through-the-wall high-current terminals;

[0003] Research on through-the-wall high-current terminals found the following problems:

[0004] During the use of high-power power lines, certain high-frequency noise or electromagnetic radiation waves will be automatically generated, which will cause great interference to the surrounding electronic components, affect their accuracy and service life, or affect normal signal transmission, resulting in equipment dysfunction and transmission of wrong signals, and may even threaten human health and safety. The impact and harm are very large. In order to eliminate the interference source generated by the power cable during use, a common-mode choke is generally formed by wrapping the power cable with a magnetic ring to suppress noise. However, this has certain requirements on the hardness and length of the power cable, as well as the installation space. If the power cable is too hard to wrap the magnetic ring, or it is easy to damage the power cable, it is necessary to reserve enough space and position during installation to place the wrapped magnetic ring, and the magnetic ring also has a certain gravity on the power line, affecting the fixation of the line;

[0005] At present, the wiring method between the through-wall terminal and the cabinet is mainly to achieve the connection between the through-wall terminal and the PCB board inside the inverter by adding cables or copper busbars. This increases the materials and corresponding costs of the wires or copper busbars, and adds multiple transfer points. It is necessary to ensure the safety, stability and reliability of multiple transfer points. Otherwise, the more transfer contact points there are, the higher the safety risk factor during the power-on process will be.

[0006] The utility model can mainly solve the problem that the through-wall terminal is inconvenient for anti-interference and direct connection with the PCB board. Utility Model Content

[0007] The utility model aims to solve the problem in the background, thereby providing a through-the-wall high-current terminal with anti-interference function and directly connected to a PCB board.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a through-wall high-current terminal with anti-interference function and directly connected to a PCB board, comprising a device end main body, one end of the device end main body is movably nested and docked with a protective cover, a sealing ring B is installed in the bottom groove of the device end main body, one end of the device end main body is provided with a lower copper conductive sheet and an upper copper conductive sheet, a rivet nut is spirally docked between the lower copper conductive sheet and the upper copper conductive sheet, a heat shrink sleeve is provided at one end of the device end main body close to the upper copper conductive sheet, a sealing ring A is surrounded by the outer side of the device end main body, an E-type retaining ring, a shaft sleeve, a plum head combination screw and a hexagonal cylindrical end set screw are embedded in the inner side of the device end main body, a wire pressing frame is installed at the end of the device end main body through a plum head combination screw, a cover plate is installed on the surface of the wire pressing frame, the cover plate and the device end main body are installed to limit the embedded wire pressing frame from escaping, and a dust cover is movably nested on the surface of the cover plate.

[0009] Furthermore, 2-3 of the lower copper conductive sheet and the upper copper conductive sheet are arranged on one side of the equipment end body, and rivet nuts are provided on the inner sides of the lower copper conductive sheet and the upper copper conductive sheet.

[0010] Furthermore, a pull buckle is installed on the outer side of the dust cover, and hot-melt adhesive columns and square nuts are respectively embedded at both ends of the pull buckle, and the other end of the pull buckle is spirally connected with a knurled head anti-slip screw. The end of the pull buckle away from the dust cover is provided with a wire end shell and a nut, and the inner side of the nut is spirally connected with a fastening ring and a magnetic ring.

[0011] Furthermore, the square nut adopts M3 square nut.

[0012] Furthermore, the magnetic ring is located at the end of a through-the-wall high-current cable.

[0013] 1. The through-wall terminal is designed as a component of two modules, and then the two modules are combined into a set of products. The device end of one module is mainly installed on the inverter, forming a separate connection between the inside and outside of the inverter and an IP protection level. The cable end of the other module is installed on the device end, forming a protection for the external connection and an IP protection level.

[0014] The copper busbar at the through-the-wall terminal device end is designed with a new structure and a rivet nut is added to directly lock the PCB board and the copper busbar of the through-the-wall terminal, achieving a quick and direct connection without the need for transfer through cables and copper busbars.

[0015] 2. The magnetic ring is placed at the end of the wall-penetrating high-current cable, eliminating the original method of winding the wire and the magnetic ring, achieving fast and convenient wiring, and providing corresponding IP protection for the wire and the magnetic ring;

[0016] There is no need to extend the power line or add special requirements. Without increasing costs, the through-wall terminal can be directly connected to the PCB board inside the inverter, reducing costs and corresponding safety risks, ensuring a stable and reliable connection method and a safe use environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall explosion structure of the utility model.

[0018] Figure 2 It is an overall plan view of the utility model.

[0019] Figure 3 It is a schematic diagram of the overall planar structure of the utility model.

[0020] Figure 4 It is a schematic diagram of the overall side plane structure of the utility model.

[0021] Figure 1-4 Middle: 1- nut, 2- fastening ring, 3- magnetic ring, 4- wire end housing, 5- knurled head anti-slip screw, 6- square nut, 7- lever, 8- hot melt adhesive column, 9- dust cover, 10- cover plate, 11- wire pressing frame, 12- hexagon socket cylindrical end set screw, 13- plum head combination screw, 14- E-type retaining ring, 15- shaft sleeve, 16- sealing ring A, 17- equipment end body, 18- heat shrink tubing, 19- upper copper conductive sheet, 20- lower copper conductive sheet, 21- rivet nut, 22- sealing ring B, 23- protective cover. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 In the embodiment of the utility model,

[0024] Embodiment 1: A through-the-wall high-current terminal with anti-interference function and directly connected to a PCB board, comprising a device end body 17, one end of the device end body 17 is movably nested with a protective cover 23, a sealing ring B22 is installed in the bottom groove of the device end body 17, one end of the device end body 17 is provided with a lower copper conductive sheet 20 and an upper copper conductive sheet 19, a pressure rivet nut 21 is spirally connected between the lower copper conductive sheet 20 and the upper copper conductive sheet 19, and one end of the device end body 17 close to the upper copper conductive sheet 19 is provided with a pressure rivet nut 21. A heat shrink sleeve 18 is provided, a sealing ring A16 surrounds the outer side of the device end body 17, an E-type retaining ring 14, a shaft sleeve 15, a plum head combination screw 13 and a hexagon socket cylindrical end set screw 12 are embedded in the inner side of the device end body 17, a wire pressing frame 11 is installed at the end of the device end body 17 through the plum head combination screw 13, a cover plate 10 is installed on the surface of the wire pressing frame 11, and the cover plate 10 and the device end body 17 are installed to limit the embedded wire pressing frame 11 from coming out, and a dust cover 9 is movably embedded on the surface of the cover plate 10;

[0025] Among them: 2-3 rivet nuts 21, lower copper conductive sheet 20 and upper copper conductive sheet 19 are arranged on one side of the equipment end body 17, and the inner sides of the lower copper conductive sheet 20 and the upper copper conductive sheet 19 are provided with rivet nuts 21;

[0026] By providing the protective cover 23 and the dust cover 9, the through-the-wall high-current terminal can be protected during the intermediate transportation link;

[0027] Among them: without the need to extend the power line or add special requirements, the through-wall terminal can be directly connected to the PCB board inside the inverter without increasing the cost, reducing the cost and corresponding safety risk points, ensuring a stable and reliable connection method and a safe use environment;

[0028] The through-wall terminal is designed as a component of two modules, and then the two modules are combined into a set of products. One module device end is mainly installed on the inverter, forming a separate connection between the inside and outside of the inverter and an IP protection level. The cable end of the other module is installed on the device end, forming a protection for the external connection and an IP protection level.

[0029] A new structure is designed for the connecting copper bar at the through-wall terminal device end, and a rivet nut 21 is added, so that the PCB board can be directly locked with the copper bar of the through-wall terminal, realizing a quick and direct connection without the need for transfer through cables and copper bars;

[0030] Example 2: Refer to the attached manual Figure 1-4, the difference between Example 2 and Example 1 is that a pull button 7 is installed on the outer side of the dust cover 9, and the two ends of the pull button 7 are respectively embedded with a hot melt adhesive column 8 and a square nut 6, and the other end of the pull button 7 is spirally connected with a knurled head anti-slip screw 5, and the end of the pull button 7 away from the dust cover 9 is provided with a wire end housing 4 and a nut 1, and the inner side of the nut 1 is spirally connected with a fastening ring 2 and a magnetic ring 3;

[0031] Among them: square nut 6, square nut 6 adopts M3 square nut;

[0032] Magnetic ring 3, which is located at the end of a through-the-wall high-current cable;

[0033] Wherein: the magnetic ring 3 is placed at the end of the wall-penetrating high-current cable, eliminating the original method of winding the wire and the magnetic ring, achieving fast and convenient wiring, and providing corresponding IP protection for the wire and the magnetic ring.

[0034] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A through-the-wall high-current terminal with anti-interference function and directly connected to a PCB board, comprising a device end body (17), characterized in that: One end of the device end body (17) is movably nested and docked with a protective cover (23), a sealing ring B (22) is installed in the bottom groove of the device end body (17), one end of the device end body (17) is provided with a lower copper conductive sheet (20) and an upper copper conductive sheet (19), a rivet nut (21) is spirally docked between the lower copper conductive sheet (20) and the upper copper conductive sheet (19), a heat shrink sleeve (18) is provided at one end of the device end body (17) close to the upper copper conductive sheet (19), and a sealing ring B (22) is installed around the outer side of the device end body (17). The sealing ring A (16) and the inner side of the device end body (17) are embedded with an E-type retaining ring (14), a shaft sleeve (15), a plum head combination screw (13) and a hexagon socket cylindrical end set screw (12). The end of the device end body (17) is installed with a wire pressing frame (11) through the plum head combination screw (13). The surface of the wire pressing frame (11) is installed with a cover plate (10). The cover plate (10) and the device end body (17) are installed to prevent the embedded wire pressing frame (11) from coming out. The surface of the cover plate (10) is movably embedded with a dust cover (9).

2. The through-the-wall high-current terminal with anti-interference function and directly connected to the PCB board according to claim 1, characterized in that: The lower copper conductive sheet (20) and the upper copper conductive sheet (19) are arranged in 2-3 numbers on one side of the equipment end body (17), and the inner sides of the lower copper conductive sheet (20) and the upper copper conductive sheet (19) are provided with rivet nuts (21).

3. The through-the-wall high-current terminal with anti-interference function and directly connected to the PCB board according to claim 2, characterized in that: A buckle (7) is installed on the outer side of the dust cover (9), and hot melt adhesive columns (8) and square nuts (6) are embedded at both ends of the buckle (7), and a knurled head anti-slip screw (5) is spirally connected to the other end of the buckle (7). The end of the buckle (7) away from the dust cover (9) is provided with a wire end housing (4) and a nut (1), and the inner side of the nut (1) is spirally connected with a fastening ring (2) and a magnetic ring (3).

4. The through-the-wall high-current terminal with anti-interference function and directly connected to the PCB board according to claim 3, characterized in that: The square nut (6) is an M3 square nut.

5. The through-the-wall high-current terminal with anti-interference function and directly connected to the PCB board according to claim 4, characterized in that: The magnetic ring (3) is located at the end of a wall-penetrating high-current cable.

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