A pulse-proof terminal strip

Abstract

This utility model relates to the field of electrical connection device technology and discloses an anti-pulse terminal block, including a PCB board. The PCB board has an upper cover and a lower cover on its upper and lower ends, respectively, and an anti-pulse component is provided on the PCB board. An acrylic observation block, made of transparent material and with its upper end extending through the upper end of the cover, allows operators to directly observe the appearance of the internal diodes without opening the cover. If the diodes show obvious damage such as burning, cracking, or fused pins, the cause of the fault can be quickly determined visually without disassembling the cover, significantly shortening the fault diagnosis time. With the anti-pulse component, when repairing or replacing diodes, operators only need to loosen the screw assembly on the cover, remove the cover from the slot in the upper cover, and then directly grasp the diode housing and vertically pull it out of the socket for replacement.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection device technology, and in particular to an anti-pulse terminal block. Background Technology

[0002] Terminal blocks are the most basic electrical connection components in the fields of industrial automation, power control and instrumentation. They are mainly used to achieve reliable electrical connections between wires and between wires and equipment.

[0003] However, currently available low-end or general-purpose terminal blocks do not integrate any pulse protection components. If users need pulse protection in a circuit, they can only add external protection devices such as diodes or TVS diodes in series. This external connection method not only requires additional installation space inside the equipment but also increases the complexity of wiring and the workload of workers. Therefore, those skilled in the art have provided a pulse protection terminal block to solve the problems mentioned in the background art. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide an anti-pulse terminal block to solve the above-mentioned shortcomings in the prior art.

[0005] Technical solution: An anti-pulse terminal block includes a PCB board, wherein an upper cover and a lower cover are respectively provided on the upper and lower end faces of the PCB board, and an anti-pulse component is provided on the PCB board;

[0006] The anti-pulse component includes a socket, and the PCB board has a corresponding socket hole; a diode is inserted into the socket, and the pins of the diode are electrically in contact with the conductive terminals inside the socket; the socket is soldered to the PCB board, and the conductive terminals of the socket pass through the socket holes of the PCB board and are electrically connected to the circuit of the PCB board; a cover plate is provided on the upper cover, and the upper cover has a slot corresponding to the cover plate; an acrylic observation block is embedded in the cover plate, and the lower end face of the acrylic observation block has a groove corresponding to the diode, and one end face of the groove is open and communicates with the external environment; an insulating buffer pad is fixedly attached to the inner wall of the groove, and the cross-sectional area of ​​the insulating buffer pad is smaller than the cross-sectional area of ​​the groove surface of the acrylic observation block.

[0007] As a further description of the above technical solution: the upper surface of the acrylic observation block penetrates the upper surface of the cover plate.

[0008] As a further description of the above technical solution: the upper cover is provided with a threaded mounting block corresponding to the cover plate, and the cover plate is fixedly connected to the upper cover by a screw assembly.

[0009] As a further description of the above technical solution: the upper cover has screw mounting holes, and the lower cover has screw posts corresponding to the screw mounting holes; the upper cover and the lower cover are locked to the screw posts by screws passing through the screw mounting holes.

[0010] As a further description of the above technical solution: the PCB board is soldered with a docking seat, and a terminal block is inserted into the docking seat; the lower end of the terminal block is provided with a plug-in pin that is adapted to the internal conductive structure of the docking seat, and after the plug-in pin is inserted into the docking seat, it makes close contact with the conductive component inside the docking seat to achieve electrical conduction.

[0011] As a further description of the above technical solution: slots corresponding to the wiring terminals are opened at both ends of the lower cover.

[0012] As a further description of the above technical solution: a handle is fixedly connected to the upper end face of the cover plate. Beneficial effects

[0013] 1. A transparent acrylic observation block with an insulating buffer pad installed in a groove allows for direct observation of the diode pin connection status and quick troubleshooting by avoiding the energized parts. Simultaneously, it forms a natural convection heat dissipation channel, ensuring the long-term stable operation of the anti-pulse component. The insulating buffer pad has a cross-sectional area smaller than the groove surface and only contacts the top face of the diode, thus pressing the diode firmly to prevent vibration-induced loosening and pin connection issues, and buffering hard contact stress to prevent damage to the diode.

[0014] 2. This device adopts a convenient disassembly and assembly design for diodes. When repairing or replacing diodes, operators only need to loosen the screw assembly on the cover plate, remove the cover plate from the slot on the top cover, and then directly hold the diode housing and pull it vertically out of the socket. Align the new diode with the socket hole and press it down until the diode's leads are in full contact with the conductive terminals inside the socket. Then, put the cover plate back into the slot and tighten the screw assembly to complete the replacement. The entire operation does not require disassembling the top and bottom covers of the entire machine, nor does it require soldering with a soldering iron, greatly improving maintenance efficiency. Ordinary operators can complete the task independently. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an anti-pulse terminal block proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the PCB board and socket of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the PCB board and the terminal block of this utility model when connected.

[0018] Figure 4 This is a three-dimensional structural diagram of the connection between the top cover and the cover plate of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the cover plate and the acrylic observation block of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the acrylic observation block of this utility model when viewed from below.

[0021] Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle.

[0022] Legend:

[0023] 1. PCB board; 2. Top cover; 3. Bottom cover; 4. Anti-pulse assembly; 41. Socket; 42. Diode; 5. Cover plate; 6. Acrylic observation block; 7. Terminal block; 8. Groove; 9. Insulating buffer pad. Detailed Implementation

[0024] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figures 1-7 An anti-pulse terminal block includes a PCB board 1, with an upper cover 2 and a lower cover 3 respectively provided on the upper and lower end faces of the PCB board 1, and an anti-pulse component 4 provided on the PCB board 1.

[0026] The anti-pulse component 4 includes a socket 41, and a corresponding socket hole is provided on the PCB board 1; a diode 42 is inserted into the socket 41, and the pins of the diode 42 are electrically in contact with the conductive terminals inside the socket 41; the socket 41 is soldered onto the PCB board 1, and the conductive terminals of the socket 41 pass through the socket hole of the PCB board 1 and are electrically connected to the circuit of the PCB board 1; a cover plate 5 is provided on the upper cover 2, and a slot corresponding to the cover plate 5 is provided on the upper cover 2; an acrylic observation block 6 is embedded in the cover plate 5, and a groove 8 corresponding to the diode 42 is provided on the lower end face of the acrylic observation block 6, and one end face of the groove 8 is open and communicates with the external environment; an insulating buffer pad 9 is fixedly attached to the inner wall of the groove 8, and the cross-sectional area of ​​the insulating buffer pad 9 is smaller than the cross-sectional area of ​​the groove 8 of the acrylic observation block 6; the upper end face of the acrylic observation block 6 penetrates the upper end face of the cover plate 5; a threaded mounting block corresponding to the cover plate 5 is provided on the upper cover 2, and the cover plate 5 is fixedly connected to the upper cover 2 by a screw assembly.

[0027] Specifically, when repairing or replacing diode 42 using cover plate 5, simply loosen the screw assembly on cover plate 5 to remove it from the slot in upper cover 2. At this time, acrylic observation block 6 is removed along with cover plate 5, and the top of diode 42 is fully exposed. The operator can directly hold the housing of diode 42 and pull it vertically out of socket 41. Then, align the new diode 42 with the socket hole in socket 41 and press it down until the pins of diode 42 are in complete contact with the conductive terminals in socket 41. At the same time, the top of diode 42 is embedded in the groove 8 on the lower end face of acrylic observation block 6. The insulating buffer pad 9 on the inner wall of groove 8 abuts against the top end face of diode 42, which can prevent diode 42 from loosening due to vibration and also provide insulation. After putting cover plate 5 back into the slot in upper cover 2 and tightening the screw assembly, the replacement is completed. The entire operation does not require disassembling the upper cover 2 and lower cover 3 of the whole machine, nor does it require soldering with an electric soldering iron, greatly improving maintenance efficiency. Ordinary operators can complete the operation independently.

[0028] By setting an insulating buffer pad 9 with a cross-sectional area smaller than the groove surface of the acrylic observation block 6 in the groove 8, multiple practical functions can be achieved simultaneously during the daily use and maintenance of the terminal block: the insulating buffer pad 9 only abuts against the top end face of the diode 42 for positioning, which can firmly press the diode 42 into the socket 41, effectively preventing the diode 42 from loosening or the pins from being loosened due to vibration during equipment transportation and operation, and can also buffer the hard contact stress of the acrylic observation block 6 with flexible insulating material to prevent the diode 42 body from being damaged by pressure; since the cross-sectional area of ​​the insulating buffer pad 9 is smaller than the groove surface of the acrylic observation block 6, a continuous annular gap is formed between the pad and the inner wall of the groove 8, which completely avoids the diode 42. The conductive terminals and soldering areas of the diode 42 pins and socket 41, together with the transparent acrylic observation block 6, allow operators to directly observe the pin connection status of the diode 42 through the acrylic observation block 6 without disassembling the entire structure such as the upper cover 2 and lower cover 3. This enables quick troubleshooting of faults such as cold solder joints, desoldering, and oxidation, greatly improving the convenience and efficiency of daily inspections. At the same time, the annular gap can serve as a natural convection heat dissipation channel for the top of the diode 42. The heat generated by the diode 42 during operation can be quickly dissipated through air convection within the gap, avoiding the heat accumulation problem caused by the pad completely filling the groove 8. This effectively improves the heat dissipation efficiency of the diode 42, ensuring the long-term stable operation of the anti-pulse component 4 under high current and high pulse conditions, and extending the product's service life.

[0029] By incorporating an acrylic observation block 6, made of transparent material with its upper surface extending through the upper surface of the cover plate 5, operators can directly observe the appearance of the internal diode 42 without opening the cover plate 5. If the diode 42 shows obvious damage such as burning, cracking, or lead melting, the cause of the fault can be quickly determined visually without disassembling the cover, significantly shortening the fault diagnosis time. Simultaneously, the lower surface of the acrylic observation block 6 has a groove 8 corresponding to the top of the diode 42. When the cover plate 5 is installed, the top of the diode 42 fits precisely into the groove 8. The insulating buffer pad 9 attached to the inner wall of the groove 8 abuts against the top surface of the diode 42, providing both limiting the insertion depth of the diode 42 and preventing it from loosening upwards due to vibration. The insulating buffer pad 9 isolates the top of diode 42 from the external environment, preventing the risk of short circuit due to accidental contact. When replacing diode 42, after the operator reinstalls cover plate 5 into the slot of upper cover 2, the groove 8 on the lower end face of acrylic observation block 6 and the insulating buffer pad 9 press down on the top of diode 42 from above. When tightening the screw assembly, acrylic observation block 6 simultaneously applies downward pre-pressure to diode 42, ensuring that the pins of diode 42 and the conductive terminals in socket 41 always maintain tight contact, avoiding poor contact problems caused by improper insertion. In addition, acrylic observation block 6 completely covers the top of diode 42, preventing external foreign objects or operator's fingers from directly contacting the live parts of diode 42 during daily use, effectively improving the safety of product use.

[0030] Each diode 42 has two pins corresponding to an independent socket 41. The spacing between the pads of the two sockets 41 on the PCB is consistent with the pin spacing of the diode 42. The optional socket 41 is a single-hole round hole socket with an integrated industry-standard symmetrical elastic metal spring. The pins and conductive parts are connected by an elastic clamping contact. When the plug pin of the terminal 7 is inserted into the socket 41, it forms an elastic clamping surface contact with the conductive parts. Stable electrical conduction and mechanical fixation are achieved by the elastic clamping force of the spring. The hole diameter is adapted to the pins of diodes 42 with specifications of DO-35 (0.5mm) or DO-41 (0.8mm). The PCB layout adopts existing mature PCB design technology. Two independent pads are drawn according to the selected diode 42 package. The pad spacing is 5mm for DO-35 and 8mm for DO-41. Each pad is soldered with a single-hole socket 41. After soldering, a set of two-pin sockets 41 adapted to the diode 42 is formed, realizing reliable conduction between the socket 41 and the PCB circuit.

[0031] Furthermore, the upper cover 2 has screw mounting holes, and the lower cover 3 has screw posts corresponding to the screw mounting holes; the upper cover 2 and the lower cover 3 are locked to the screw posts by screws passing through the screw mounting holes; a docking seat is welded on the PCB board 1, and a terminal block 7 is inserted into the docking seat; the lower end of the terminal block 7 is provided with a plug-in pin adapted to the internal conductive structure of the docking seat, and after the plug-in pin is inserted into the docking seat, it makes close contact with the conductive parts inside the docking seat to achieve electrical conduction; slots corresponding to the terminal blocks 7 are opened at both ends of the lower cover 3; a handle is fixedly connected to the upper surface of the cover plate 5.

[0032] Specifically, by using the plug-in structure with terminals 7 and mating sockets, when maintaining or replacing terminals 7, simply pull terminals 7 outward from the slot at the end of the lower cover 3. The plug-in pins at the lower end of terminals 7 can then be separated from the conductive parts inside the mating socket, achieving quick disassembly. During installation, align the plug-in pins of terminals 7 with the socket holes of the mating socket and push them inward until the plug-in pins are fully inserted into the mating socket to complete electrical conduction and mechanical fixation. No welding or screw tightening is required, making the operation convenient and efficient. The slots at both ends of the lower cover 3 limit and guide terminals 7, ensuring accurate positioning during plugging.

[0033] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An anti-pulse terminal block, comprising a PCB board (1), characterized in that, The PCB board (1) is provided with an upper cover (2) and a lower cover (3) on its upper and lower end faces respectively, and an anti-pulse component (4) is provided on the PCB board (1). The anti-pulse component (4) includes a socket (41), and the PCB board (1) is provided with a socket corresponding to the socket (41); a diode (42) is inserted into the socket (41), and the pins of the diode (42) are electrically in contact with the conductive terminals inside the socket (41); the socket (41) is soldered to the PCB board (1), and the conductive terminals of the socket (41) pass through the sockets of the PCB board (1) and are electrically connected to the circuit of the PCB board (1); a cover plate is provided on the upper cover (2). 5), and the upper cover (2) is provided with a slot corresponding to the cover plate (5); an acrylic observation block (6) is embedded on the cover plate (5), and the lower end face of the acrylic observation block (6) is provided with a groove (8) corresponding to the diode (42), and one side end face of the groove (8) is open and connected to the external environment; an insulating buffer pad (9) is fixedly attached to the inner wall of the groove (8), and the cross-sectional area of ​​the insulating buffer pad (9) is smaller than the cross-sectional area of ​​the groove (8) of the acrylic observation block (6).

2. The anti-pulse terminal block according to claim 1, characterized in that, The upper surface of the acrylic observation block (6) penetrates the upper surface of the cover plate (5).

3. The anti-pulse terminal block according to claim 2, characterized in that, The upper cover (2) is provided with a threaded mounting block corresponding to the cover plate (5), and the cover plate (5) is fixedly connected to the upper cover (2) by a screw assembly.

4. The anti-pulse terminal block according to claim 1, characterized in that, The upper cover (2) has screw mounting holes, and the lower cover (3) has screw posts corresponding to the screw mounting holes; the upper cover (2) and the lower cover (3) are locked to the screw posts by screws passing through the screw mounting holes.

5. The anti-pulse terminal block according to claim 1, characterized in that, The PCB board (1) is welded with a docking seat, and a terminal block (7) is inserted into the docking seat; the lower end of the terminal block (7) is provided with a plug-in pin that is compatible with the internal conductive structure of the docking seat. After the plug-in pin is inserted into the docking seat, it makes close contact with the conductive component inside the docking seat to achieve electrical conduction.

6. The anti-pulse terminal block according to claim 5, characterized in that, The lower cover (3) has slots at both ends that correspond to the wiring terminals (7).

7. The anti-pulse terminal block according to claim 3, characterized in that, A handle is fixedly connected to the upper end face of the cover plate (5).

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