Circuit board convenient to maintain and replace, having short-circuit protection function and improving load driving capability

Abstract

The utility model relates to the field of motion controllers, and discloses a circuit board convenient to maintain and replace, with short-circuit protection and load driving capability increasing, which comprises a main circuit board connected with a controller and a sub circuit board which is used for short-circuit protection and load driving current increasing and can be rapidly replaced. The bottom of the main connection circuit board is provided with a terminal seat, a female header and a plug-in terminal connected with the controller, and the top of the sub circuit board is provided with a detection lamp, a mos tube, an optocoupler and the like. According to the motion controller, the main circuit board and the secondary circuit board are arranged, circuits in the motion controller are protected, meanwhile, when electronic components are damaged, the secondary circuit board can be detached for replacement and maintenance, and the motion controller does not need to stop working by pulling out a wire, so that the motion controller is relatively simple and convenient to maintain, and the maintenance waiting time of the motion controller is shortened.

Description

Technical Field

[0001] The utility model relates to the field of motion controllers, in particular to a circuit board which is convenient for maintenance and replacement and has short-circuit protection and increased load driving capability. Background Art

[0002] Motion controllers usually refer to the process of converting predetermined control schemes and planning instructions into desired mechanical motion under complex conditions, and realizing the position control, speed control, acceleration control, torque or force control of mechanical motion. Motion controllers are widely used in industrial automation fields that require high-speed and real-time communication, such as robot control, motion control systems, packaging machinery, CNC machine tools, test and measurement equipment, and automobile assembly lines.

[0003] In order to realize complex control functions, current motion controllers are equipped with numerous input / output (IO) interfaces and power supply interfaces to connect with various encoders and drivers. In order to simplify the connection process of wires and prevent the controller from being damaged due to overheating, a wiring protection circuit board is usually used. This circuit board is designed with a terminal block, a limit seat and a reset spring, and the use of a spring-type terminal block of a pressing column allows the cable to be quickly and smoothly inserted into the slot and fixed. The installation of cables is thus simplified, and the cable connectors are protected to avoid the risk of short circuits. Even if the voltage or current fluctuates and causes damage to the components on the protection circuit board, the motion controller itself will not be affected. However, if there is no circuit board described in this patent, once the electronic components on the protection circuit board need to be repaired, all connected wires must be unplugged first, and then the motion element controller must be replaced. This process is relatively cumbersome and time-consuming, and causes the equipment to be discontinued. For this reason, a circuit board with short-circuit protection and increased load driving capacity that is easy to repair and replace is proposed to solve the above problems. At the same time, the output point of most controllers has an output capacity of only 0.3A, and cannot directly drive loads with slightly larger power. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a circuit board with short-circuit protection and increased load driving capability, which is convenient for maintenance and replacement. It aims to improve the problem in the prior art that after the electronic components on the protection circuit board are damaged, all the wires plugged in the protection circuit board must be unplugged and the components must be replaced, which is troublesome to replace, and the problem that the load with a current greater than 0.3A cannot be directly driven.

[0005] To achieve the above object, the utility model adopts the following technical solutions: a circuit board with short-circuit protection and increased load driving ability for convenient maintenance and replacement, including a main circuit board. A terminal block is arranged at the bottom of the main circuit board, a wiring block is arranged at the top of the main circuit board, and a plug-in component is arranged at the top of the main circuit board. A sub-circuit board is fixedly connected to the top of the plug-in component. The plug-in component is used to connect the sub-circuit board and the main circuit board. An optocoupler is arranged at the top of the sub-circuit board, a MOS transistor is arranged at the top of the sub-circuit board, and an LED indicator light is arranged at the top of the sub-circuit board. The MOS transistor is used to make the load current at the output point reach 5A, and the optocoupler is used to isolate the output point from the MOS transistor, so that the output point of the controller does not respond when the load is short-circuited.

[0006] As a further description of the above technical solution:

[0007] The plug-in component includes a female header. The bottom end of the female header is arranged at the top end of the main circuit board. A male pin is inserted into the female header, and the outer periphery of the male pin is fixedly connected to the inside of the sub-circuit board.

[0008] As a further description of the above technical solution:

[0009] The female header is electrically connected to the terminal block and the wiring block, and the optocoupler is electrically connected to the male pin and the MOS transistor.

[0010] As a further description of the above technical solution:

[0011] The LED indicator light is electrically connected to the male pin and the MOS transistor through a resistor.

[0012] As a further description of the above technical solution:

[0013] The optocoupler is located on one side of the MOS transistor, and the LED indicator light is located on the other side of the MOS transistor.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, by setting the main and sub-circuit boards to protect the circuit inside the motion controller, and when electronic components are damaged, the sub-circuit board can be disassembled for replacement and repair without unplugging the wires to stop the motion controller from working. Thus, not only the maintenance is relatively simple, but also the maintenance waiting time for the motion controller is reduced.

[0016] 2. In the utility model, by setting the optocoupler and the MOS transistor, the load current of the controller is increased, and the optocoupler is used to isolate the output point from the MOS transistor, so that the output point of the controller does not respond when the load is short-circuited, enabling the controller to drive a higher load. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall top surface of a circuit board with short - circuit protection and increased load - driving ability, which is convenient for maintenance and replacement, proposed by the present utility model;

[0018] Figure 2 Schematic diagram of the right side of the main circuit board of a circuit board with short - circuit protection and increased load - driving ability, which is convenient for maintenance and replacement, proposed by the present utility model;

[0019] Figure 3 Schematic diagram of the right side of the sub - circuit board of a circuit board with short - circuit protection and increased load - driving ability, which is convenient for maintenance and replacement, proposed by the present utility model;

[0020] Figure 4 Schematic cross - sectional diagram of the right side of the female header of a circuit board with short - circuit protection and increased load - driving ability, which is convenient for maintenance and replacement, proposed by the present utility model.

[0021] Legend:

[0022] 1. Main circuit board; 2. Terminal block; 3. Wiring block; 4. Female header; 5. Pin header; 6. Sub - circuit board; 7. Optocoupler; 8. MOS transistor; 9. LED indicator. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Refer to Figure 1 、 Figure 2 and Figure 4, an embodiment provided by the present utility model: a circuit board that facilitates maintenance and replacement, has short-circuit protection, and increases load driving capacity, including a main circuit board 1 connected to a motion controller. A terminal block 2 is provided at the bottom of the main circuit board 1. Multiple groups of terminal blocks 2 are provided, and the main circuit board 1 can be connected to the motion controller through pluggable terminals to transmit signals and current. A wiring block 3 is provided at the top of the main circuit board 1. Multiple groups of wiring blocks 3 are provided to facilitate the connection of various types of wires required by the motion controller. A plug-in component is provided at the top of the main circuit board 1. The plug-in component includes a female header 4. The bottom end of the female header 4 is provided at the top end of the main circuit board 1. Multiple groups of slots for convenient plugging are provided inside the female header 4. The female header 4 is electrically connected between the terminal block 2 and the wiring block 3. The current of the wiring block 3 is transmitted to the motion controller through the female header 4 after passing through the female header 4. A male header 5 is plugged inside the female header 4. The male header 5 is provided with multiple sets of pins. The quantity and position are opposite to the slots inside the female header 4 and are evenly distributed in the slots inside the female header 4. The outer periphery of the male header 5 is plugged inside the female header 4. According to different definitions, some of the pins inside the male header 5 are used for inputting current and signals, and some are used for outputting current and signals.

[0025] Referring to Figures 2 - 3 , a sub-circuit board 6 for facilitating component maintenance is fixedly connected to the top of the plug-in component. The outer periphery of the male header 5 is fixedly connected inside the sub-circuit board 6. Multiple groups of sub-circuit boards 6 are provided and are linearly and evenly distributed on the top of the main circuit board 1. Two sets of male headers 5 are fixedly connected to the bottom of each group of sub-circuit boards 6 and are symmetrically arranged front and back at the bottom of the sub-circuit board 6. The plug-in component is used to connect the sub-circuit board 6 and the main circuit board 1. An optocoupler 7 is provided at the top of the sub-circuit board 6. A MOS transistor 8 is provided at the top of the sub-circuit board 6. The optocoupler 7 is electrically connected between the male header 5 and the MOS transistor 8. Multiple groups of optocouplers 7 and MOS transistors 8 are provided. There is an electrical connection between each group of MOS transistors 8 and the upper and lower two corresponding optocouplers 7. The MOS transistor 8 is used to make the load current at the output point reach 5A, and the optocoupler 7 is used to isolate the output point from the MOS transistor 8, so that the output point of the controller does not respond when the load is short-circuited. An LED indicator light 9 is provided at the top of the sub-circuit board 6. The LED indicator light 9 is electrically connected between the male header 5 and the MOS transistor 8 through a resistor. A short circuit will cause the LED indicator light 9 to light up, indicating the location of the problem and reminding that replacement is needed. The optocoupler 7 is located on one side of the MOS transistor 8, and the LED indicator light 9 is located on the other side of the MOS transistor 8.

[0026] Working principle: When the MOS transistor 8 is damaged, the LED indicator 9 around the MOS transistor 8 will light up. At this time, find the daughter circuit board 6 corresponding to the damaged MOS transistor 8, remove the daughter circuit board 6, replace it with a new one, and then repair the damaged daughter circuit board 6. At this time, there is no need to remove the main circuit board 1 for repair, which not only simplifies the repair but also reduces the repair waiting time for the motion controller. At the same time, when the daughter circuit board 6 is connected to the main circuit board 1, current enters the MOS transistor 8, enabling the output load current of the controller to reach 5A, allowing the controller to control a higher load. At the same time, an optocoupler 7 is used to isolate the output point from the MOS transistor 8, so that the output point of the controller does not respond when the load is short-circuited, ensuring that the circuit of the controller will not burn out. Thus, while protecting the circuit board, the load that the controller can drive is improved.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circuit board with short-circuit protection and increased load driving capability is convenient for maintenance and replacement, comprising a main circuit board (1), characterized in that: The main circuit board (1) is provided with a terminal seat (2) at the bottom, the main circuit board (1) is provided with a wiring seat (3) at the top, the main circuit board (1) is provided with a plug-in assembly at the top, a sub-circuit board (6) is fixedly connected to the top of the plug-in assembly, the plug-in assembly is used to connect the sub-circuit board (6) and the main circuit board (1), an optical coupler (7) is provided at the top of the sub-circuit board (6), a MOS tube (8) is provided at the top of the sub-circuit board (6), and an LED indicator light (9) is provided at the top of the sub-circuit board (6).

2. The circuit board with short circuit protection and increased load driving capability for easy maintenance and replacement according to claim 1, characterized in that: The plug-in assembly comprises a female connector (4), the bottom end of which is arranged at the top end of the main circuit board (1), a pin connector (5) is inserted into the interior of the female connector (4), and the outer periphery of the pin connector (5) is fixedly connected to the interior of the sub-circuit board (6).

3. The circuit board with short circuit protection and increased load driving capability for easy maintenance and replacement according to claim 2, characterized in that: The female connector (4) is electrically connected to the terminal block (2) and the wiring block (3); the optical coupler (7) is electrically connected to the pin connector (5) and the MOS tube (8).

4. The circuit board with short circuit protection and increased load driving capability for easy maintenance and replacement according to claim 1, characterized in that: The LED indicator light (9) is electrically connected to the pin header (5) and the MOS tube (8) via a resistor.

5. The circuit board with short circuit protection and increased load driving capability for easy maintenance and replacement according to claim 1, characterized in that: The optical coupler (7) is located on one side of the MOS tube (8), and the LED indicator light (9) is located on the other side of the MOS tube (8).

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