Serial port expansion module supporting multi-protocol conversion

Abstract

The utility model relates to the technical field of computer communication, in particular to a serial port expansion module supporting multi-protocol conversion. The extension module comprises an extension module body and a machine cover, the surface of the extension module body is in sliding connection with the machine cover, a power interface is arranged on the surface of the machine cover, a plurality of communication interfaces are arranged on the surface of the machine cover, dismounting devices are arranged on the two sides of the machine cover, and each dismounting device comprises two fixing plates. The two fixing plates are fixedly connected with the two sides of the machine cover respectively, fixing frames are fixedly connected with the two sides of the extension module body, the inner walls of the fixing frames are slidably connected with the fixing plates, and grooves are formed in the inner walls of the fixing frames. The problems of production line stagnation and data acquisition interruption in an industrial automation scene, or network communication paralysis caused by module faults in an Internet of Things system, which are caused by maintenance delay due to a complicated traditional disassembly structure when the expansion module body needs to be maintained, are solved.

Description

Technical Field

[0001] This utility model relates to the field of computer communication technology, and in particular to a serial port expansion module that supports multi-protocol conversion. Background Technology

[0002] A serial port expansion module supporting multi-protocol conversion is a hardware component used to expand the number of serial ports on a device and realize the conversion of different communication protocols. It usually has multiple serial communication interfaces, which can connect to various devices that follow different communication protocols and convert data formats, electrical characteristics or communication rules between different protocols, thereby realizing the interconnection between heterogeneous devices. Serial port expansion modules are widely used to connect PLCs, sensors, actuators and other devices to realize collaborative work between different devices. However, traditional serial port expansion modules have many drawbacks in terms of the disassembly structure of the cover. The complicated disassembly method often requires professional tools and cumbersome operation steps, such as removing multiple screws and using pry tools to open the tightly fitted shell. This not only requires maintenance personnel to spend a lot of time and energy to disassemble the cover and access the internal components that need maintenance during equipment maintenance, but also, if not careful during the operation, it may cause physical damage to the internal circuits and components, such as wire breakage, solder joint detachment, interface deformation, etc., which can lead to equipment failure, resulting in problems such as production line stoppage, data acquisition interruption, and network communication paralysis.

[0003] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when the expansion module body needs maintenance, the traditional disassembly structure is complicated, which leads to maintenance delays, causing production line shutdowns and data acquisition interruptions in industrial automation scenarios, or network communication paralysis in IoT systems due to module failures; therefore, a serial port expansion module that supports multi-protocol conversion is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies, such as the delay caused by the complex disassembly structure of traditional expansion modules when maintenance is required, which leads to production line shutdowns and data acquisition interruptions in industrial automation scenarios, or network communication paralysis in IoT systems due to module failures. Therefore, this utility model proposes a serial port expansion module that supports multi-protocol conversion.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a serial port expansion module supporting multi-protocol conversion, comprising an expansion module body and a cover. The surface of the expansion module body is slidably connected to the cover. The surface of the cover is provided with a power interface and several communication interfaces. Disassembly devices are provided on both sides of the cover. Each disassembly device includes two fixing plates, which are respectively fixedly connected to the sides of the cover. Fixing frames are fixedly connected to both sides of the expansion module body. The inner wall of each fixing frame is slidably connected to the fixing plate. A groove is formed in the inner wall of the fixing frame. A first spring is fixedly connected to the inner wall of the groove. A limit block is fixedly connected to one end of the first spring. A limit groove is formed on the surface of the fixing plate. The inner wall of the limit groove is slidably connected to the limit block. A through hole is formed on the surface of the fixing plate. A threaded rod is threaded through the fixing frame. The threaded rod is threadedly connected to the inner wall of the through hole in the fixing plate. A rotating plate is fixedly connected to one end of the threaded rod.

[0006] The aforementioned components achieve the following effects: By incorporating a disassembly device, the cover on the expansion module body can be quickly disassembled and reassembled, facilitating its maintenance. When the expansion module body requires maintenance, maintenance personnel only need to unscrew the threaded rod and press the limiting block to disengage from the limiting groove to easily remove the cover and quickly access the internal components. Compared to traditional complex disassembly structures, this device significantly shortens maintenance time and avoids the problems of production line stagnation, data acquisition interruption, or network communication paralysis in IoT systems caused by module failures due to the complexity of traditional disassembly structures in industrial automation scenarios. It can respond quickly, especially in emergency maintenance scenarios, improving maintenance efficiency and safety.

[0007] Preferably, the arc surface of the rotating plate is provided with a plurality of anti-slip grooves, and the plurality of anti-slip grooves are evenly distributed in a circular array on the rotating plate.

[0008] The effect achieved by the above-mentioned components is as follows: by setting anti-slip grooves, the friction between the hand and the rotating plate is increased. When the maintenance personnel rotate the rotating plate and turn the threaded rod, the rough surface provided by the anti-slip grooves allows the fingers to better fit the rotating plate, ensuring stable force application.

[0009] Preferably, a pressing plate is fixedly connected to one side of the limiting block, and the surface of the pressing plate is provided with anti-slip protrusions.

[0010] The effect achieved by the above components is as follows: by setting up the pressing plate, a larger force application area is provided for maintenance personnel. Compared with directly pressing the limit block, there is no need to search for the pressing point during operation. Just press the pressing plate lightly to easily disengage the limit block from the limit groove, which greatly simplifies the operation steps of disassembling the cover.

[0011] Preferably, a sealing gasket is fixedly connected to the inner wall of the cover, and the surface of the sealing gasket is slidably connected to the expansion module body. The sealing gasket is made of rubber.

[0012] The effect achieved by the above components is as follows: by setting a sealing gasket, when the cover and the expansion module body are tightly fitted, the gap between them can be completely filled, preventing external contaminants such as dust, debris, and moisture from entering the module. This avoids dust, moisture, and other contaminants from entering the expansion module body through the gap, which could lead to problems such as short circuits.

[0013] Preferably, the surface of the cover is provided with a protective device, which includes two square plates. A round rod is fixedly connected to one side of the two square plates that are close to each other. A protective plate is rotatably connected to the arc surface of the round rod. A limit plate is fixedly connected to the surface of the protective plate. An insertion hole is opened on the surface of the limit plate. A support plate is fixedly connected to the surface of the cover. A fixing rod is slidably inserted into the support plate. The fixing rod is slidably connected to the inner wall of the insertion hole of the limit plate. A pull plate is fixedly connected to one end of the fixing rod.

[0014] The effect achieved by the above-mentioned components is as follows: by setting up a protective device, the power interface is covered and protected when the expansion module body is not in use. This prevents the interface from being physically damaged by accidental collisions or scratches, and prevents dust, debris and other foreign objects from entering the interface and accumulating inside, causing faults such as poor contact and short circuits in the power interface. This significantly reduces the probability of interface damage and extends the service life of the expansion module body.

[0015] Preferably, the arc surface of the round rod is fitted with two torsion springs, and the two ends of the torsion springs are fixedly connected to the protective plate and the square plate, respectively.

[0016] The effect achieved by the above components is that, under the action of the torsion spring, the protective plate is automatically rotated open and fixed at a certain angle, eliminating the need for manual opening of the protective plate, greatly simplifying the operation process, and significantly improving protection efficiency, especially in scenarios where the power interface is frequently used.

[0017] Preferably, a second spring is fitted onto the arc surface of the fixing rod, and the two ends of the second spring are fixedly connected to the support plate and the pull plate, respectively.

[0018] The effect achieved by the above components is that, under the action of the second spring, the pull plate and the fixing rod are automatically pushed back to their original positions and the tension on the pull plate is maintained, so that the fixing rod is firmly inserted into the hole of the limiting plate, which significantly improves the ease of operation and the stability of protection.

[0019] The beneficial effects of this utility model are:

[0020] 1. In this utility model, by setting up a disassembly device, the cover on the expansion module body can be quickly disassembled and assembled, facilitating its maintenance. When the expansion module body needs maintenance, the maintenance personnel only need to unscrew the threaded rod and press the limiting block to disengage from the limiting groove to easily remove the cover and quickly access the internal components. Compared with the traditional complex disassembly structure, this device significantly shortens the maintenance time and avoids the problems of production line stagnation, data acquisition interruption, or network communication paralysis caused by module failure in IoT systems due to the complexity of the traditional disassembly structure in industrial automation scenarios. Especially in emergency maintenance scenarios, it can respond quickly and improve maintenance efficiency and safety.

[0021] 2. In this utility model, by setting a protective device, the power interface is covered and protected when the expansion module body is not in use. This prevents the interface from being physically damaged by accidental collisions or scratches, and from the accumulation of dust, debris and other foreign objects inside the interface, which can cause poor contact, short circuits and other faults. This significantly reduces the probability of interface damage and extends the service life of the expansion module body. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the disassembly device in this utility model;

[0024] Figure 3 This is a schematic diagram of the disassembly structure of the disassembly device in this utility model;

[0025] Figure 4 This is a schematic diagram of the protective device in this utility model;

[0026] Figure 5 This is a partial structural schematic diagram of the protective device in this utility model.

[0027] Legend: 1. Expansion module body; 2. Cover; 3. Power interface; 4. Disassembly device; 401. Fixing plate; 402. Fixing bracket; 403. Groove; 404. Limiting groove; 405. First spring; 406. Limiting block; 407. Threaded rod; 408. Rotating plate; 409. Anti-slip groove; 410. Pressing plate; 411. Sealing gasket; 5. Protective device; 51. Square plate; 52. Round rod; 53. Protective plate; 54. Torsion spring; 55. Limiting plate; 56. Support plate; 57. Fixing rod; 58. Pull plate; 59. Second spring; 6. Communication interface. Detailed Implementation

[0028] Reference Figure 1 , Figure 2 and Figure 4As shown, this utility model provides a technical solution: a serial port expansion module supporting multi-protocol conversion, including an expansion module body 1 and a cover 2. The surface of the expansion module body 1 is slidably connected to the cover 2. The surface of the cover 2 is provided with a power interface 3 and several communication interfaces 6. Disassembly devices 4 are provided on both sides of the cover 2. By setting the disassembly devices 4, the cover 2 on the expansion module body 1 can be quickly disassembled and assembled, facilitating its maintenance. When the expansion module body 1 needs maintenance, the maintenance personnel only need to unscrew the threaded rod 407 and press the limiting block 406 to disengage from the limiting groove 404 to easily remove the cover 2 and quickly access the internal components. Compared with the traditional complex disassembly structure, this device significantly shortens the maintenance time. This design avoids the problems of production line stagnation and data acquisition interruption caused by the complexity of traditional disassembly structures in industrial automation scenarios, or network communication paralysis caused by module failures in IoT systems. It can respond quickly, especially in emergency maintenance scenarios, improving maintenance efficiency and safety. The surface of the cover 2 is equipped with a protective device 5. By setting the protective device 5, the power interface 3 is covered when the expansion module body 1 is not in use, thus protecting the power interface 3 from physical damage caused by accidental collisions and scratches, and from the accumulation of dust, debris and other foreign objects inside the interface, which can cause poor contact, short circuits and other faults in the power interface 3. This significantly reduces the probability of interface damage and extends the service life of the expansion module body 1.

[0029] The following section will explain the specific design and function of the disassembly device 4 and the protective device 5.

[0030] Reference Figure 2 and Figure 3As shown, in this embodiment: the disassembly device 4 includes two fixing plates 401, which are fixedly connected to both sides of the cover 2 respectively. Fixing brackets 402 are fixedly connected to both sides of the expansion module body 1. The inner wall of the fixing bracket 402 is slidably connected to the fixing plate 401. A groove 403 is provided on the inner wall of the fixing bracket 402. A first spring 405 is fixedly connected to the inner wall of the groove 403. One end of the first spring 405 is fixedly connected to a limiting block 406. A limiting groove 404 is provided on the surface of the fixing plate 401. The inner wall is slidably connected to the limiting block 406. A through hole is provided on the surface of the fixing plate 401. A threaded rod 407 passes through the inner thread of the fixing bracket 402. The threaded rod 407 is threadedly connected to the inner wall of the through hole in the fixing plate 401. One end of the threaded rod 407 is fixedly connected to a rotating plate 408. Several anti-slip grooves 409 are provided on the arc surface of the rotating plate 408. These anti-slip grooves 409 are evenly distributed in a circular array on the rotating plate 408. By setting the anti-slip grooves 409, the friction between the hand and the rotating plate 408 is increased. When maintenance personnel rotate... When the rotating plate 408 rotates the threaded rod 407, the rough surface provided by the anti-slip groove 409 allows fingers to better fit the rotating plate 408, ensuring stable force application. A pressing plate 410 is fixedly connected to one side of the limiting block 406. The surface of the pressing plate 410 is provided with anti-slip protrusions. By setting the pressing plate 410, a larger force application area is provided for maintenance personnel. Compared with directly pressing the limiting block 406, there is no need to laboriously find the pressing point during operation. Simply press the pressing plate 410 lightly to easily disengage the limiting block 406 from the limiting groove 404. The operation steps for disassembling the cover 2 are greatly simplified. A sealing gasket 411 is fixedly connected to the inner wall of the cover 2. The surface of the sealing gasket 411 is slidably connected to the expansion module body 1. The sealing gasket 411 is made of rubber. By setting the sealing gasket 411, when the cover 2 and the expansion module body 1 are tightly fitted, the gap between them can be completely filled, preventing external pollutants such as dust, debris, and moisture from entering the module. This avoids the problem of dust, moisture, and other pollutants entering the expansion module body 1 through the gap, which could lead to short circuits and other issues.

[0031] Reference Figure 4 and Figure 5As shown, specifically, the protective device 5 includes two square plates 51. A round rod 52 is fixedly connected to one side of the two square plates 51 that is close to each other. A protective plate 53 is rotatably connected to the arc surface of the round rod 52. A limit plate 55 is fixedly connected to the surface of the protective plate 53. An insertion hole is opened on the surface of the limit plate 55. A support plate 56 is fixedly connected to the surface of the cover 2. A fixing rod 57 is slidably inserted into the support plate 56. The fixing rod 57 is slidably connected to the inner wall of the insertion hole of the limit plate 55. A pull plate 58 is fixedly connected to one end of the fixing rod 57. Two torsion springs 54 are sleeved on the arc surface of the round rod 52. The two ends of the torsion springs 54 are fixedly connected to the protective plate 53 and the square plate 51 respectively. Under the force of the torsion spring 54, the protective plate 53 is automatically rotated open and fixed at a certain angle, eliminating the need for manual opening of the protective plate 53 and greatly simplifying the operation process. Especially in scenarios where the power interface 3 is frequently used, the protection efficiency can be significantly improved. The arc surface of the fixing rod 57 is fitted with a second spring 59. The two ends of the second spring 59 are fixedly connected to the support plate 56 and the pull plate 58, respectively. Under the force of the second spring 59, the pull plate 58 and the fixing rod 57 are automatically pushed back to their original positions and the tension on the pull plate 58 is maintained, so that the fixing rod 57 is stably inserted into the socket of the limiting plate 55, which significantly improves the ease of operation and the stability of protection.

[0032] Working principle: When maintenance and repair of the expansion module body 1 are required, the maintenance personnel hold the rotating plate 408, and increase the friction through the anti-slip groove 409 on the arc surface of the rotating plate 408, easily turning the threaded rod 407 to disengage it from the through hole of the fixing bracket 402 and the fixing plate 401. After the threaded rod 407 loses its limiting effect, the pressing plate 410 on one side of the limiting block 406 is pressed. The pressing plate 410 applies stable force, causing the limiting block 406 to overcome the elastic force of the first spring 405 and disengage from the limiting groove 404. At this time, the fixing plates 401 on both sides of the cover 2 can slide freely along the inner wall of the fixing bracket 402, thereby easily removing the cover 2. The internal components of the expansion module body 1 are exposed below, facilitating maintenance and repair. When installation is required after maintenance, the fixing plates 401 on both sides of the cover 2 are aligned with the inner walls of the fixing brackets 402 on both sides of the expansion module body 1. The fixing plates 401 are then inserted into the fixing brackets 402. During this process, the first spring 405 in the groove 403 on the inner wall of the fixing bracket 402 is in its natural state, and the limiting block 406 connected to one end is compressed by the fixing plate 401 and retracts into the groove 403. When the limiting groove 404 on the fixing plate 401 is aligned with the limiting block 406, the first spring 405 returns to its original deformation, pushing the limiting block 406 into the limiting groove 403. 04. After initial positioning, the rotating plate 408 drives the threaded rod 407 to rotate. The threaded rod 407 passes through the through hole of the fixing plate 401 and is threadedly connected to the fixing bracket 402, completing the installation of the cover 2. The sealing gasket 411 fixed to the inner wall of the cover 2, with the good elasticity and flexibility of rubber, tightly fills the gap between the cover 2 and the expansion module body 1 when they are installed and attached. This design effectively prevents external dust, moisture, oil and other contaminants from entering the module, preventing short circuits caused by dust accumulation or component damage caused by moisture corrosion. By setting up the disassembly device 4, the expansion module body 1 can be disassembled. The cover 2 can be quickly disassembled and reassembled, facilitating its maintenance. When the expansion module body 1 needs maintenance, the maintenance personnel only need to unscrew the threaded rod 407 and press the limit block 406 to disengage from the limit groove 404 to easily remove the cover 2 and quickly access the internal components. Compared with the traditional complex disassembly structure, this device significantly shortens the maintenance time and avoids the problems of production line stagnation, data acquisition interruption, or network communication paralysis caused by module failure in IoT systems due to the complexity of traditional disassembly structures in industrial automation scenarios. It can respond quickly, especially in emergency maintenance scenarios, improving maintenance efficiency and safety.

[0033] Working principle: When power interface 3 is needed, the operator pulls the pull plate 58. The pull plate 58 overcomes the tension of the second spring 59, causing the fixing rod 57 to slide within the support plate 56, thus pulling the fixing rod 57 out of the insertion hole of the limiting plate 55. During this process, the second spring 59 is stretched and accumulates elastic potential energy. At this time, the protective plate 53 loses the limiting effect of the fixing rod 57. Since the arc surface of the round rod 52 is fitted with two torsion springs 54, and the two ends of the torsion springs 54 are fixedly connected to the protective plate 53 and the square plate 51 respectively, at the moment the fixing rod 57 is pulled, the protective plate 53, under the action of the elastic potential energy of the torsion springs 54, quickly rotates around the round rod 52 to open, automatically exposing the power interface 3 on the surface of the cover 2. There is no need to manually rotate the protective plate 53, making the operation simple and efficient. After the interface is used, simply push the protective plate 53 gently to make it rotate around the round rod 52 to reset. During the rotation of the protective plate 53, the torsion spring 54 undergoes elastic deformation and accumulates potential energy. When the protective plate 53 returns to its initial position and the insertion hole of the limiting plate 55 aligns with the fixing rod 57, the pull plate 58 is released, and the second spring 59 releases its elastic potential energy, automatically pushing the pull plate 58 and the fixing rod 57 back to their original positions. This allows the fixing rod 57 to re-insert into the insertion hole of the limiting plate 55 and maintain the pulling force on the pull plate 58, ensuring that the fixing rod 57 is securely inserted into the insertion hole of the limiting plate 55, thus completing the fixation of the protective plate 53. By setting the protective device 5, the power interface 3 is covered and protected when the expansion module body 1 is not in use. This prevents physical damage to the interface due to accidental collisions or scratches, and prevents dust, debris, and other foreign objects from entering the interface and accumulating, causing faults such as poor contact and short circuits in the power interface 3. This significantly reduces the probability of interface damage and extends the service life of the expansion module body 1.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A serial port expansion module supporting multi-protocol conversion, comprising an expansion module body (1) and a cover (2), characterized in that: The surface of the expansion module body (1) is slidably connected to the cover (2). The surface of the cover (2) is provided with a power interface (3) and several communication interfaces (6). The two sides of the cover (2) are provided with disassembly devices (4). The disassembly devices (4) include two fixing plates (401). The two fixing plates (401) are respectively fixedly connected to the two sides of the cover (2). The two sides of the expansion module body (1) are fixedly connected with fixing brackets (402). The inner wall of the fixing brackets (402) is slidably connected to the fixing plates (401). The inner wall of the fixing brackets (402) is provided with grooves. (403), a first spring (405) is fixedly connected to the inner wall of the groove (403), a limit block (406) is fixedly connected to one end of the first spring (405), a limit groove (404) is opened on the surface of the fixing plate (401), the inner wall of the limit groove (404) is slidably connected to the limit block (406), a through hole is opened on the surface of the fixing plate (401), a threaded rod (407) is threaded through the fixing bracket (402), the threaded rod (407) is threadedly connected to the inner wall of the through hole of the fixing plate (401), and a rotating plate (408) is fixedly connected to one end of the threaded rod (407).

2. The serial port expansion module supporting multi-protocol conversion according to claim 1, characterized in that: The rotating plate (408) has a plurality of anti-slip grooves (409) on its arc surface, and the plurality of anti-slip grooves (409) are evenly distributed in a circular array on the rotating plate (408).

3. The serial port expansion module supporting multi-protocol conversion according to claim 1, characterized in that: A pressing plate (410) is fixedly connected to one side of the limiting block (406), and the surface of the pressing plate (410) is provided with anti-slip protrusions.

4. The serial port expansion module supporting multi-protocol conversion according to claim 1, characterized in that: A sealing gasket (411) is fixedly connected to the inner wall of the cover (2). The surface of the sealing gasket (411) is slidably connected to the body of the expansion module (1). The material of the sealing gasket (411) is rubber.

5. The serial port expansion module supporting multi-protocol conversion according to claim 1, characterized in that: The surface of the cover (2) is provided with a protective device (5). The protective device (5) includes two square plates (51). A round rod (52) is fixedly connected to one side of the two square plates (51) that are close to each other. A protective plate (53) is rotatably connected to the arc surface of the round rod (52). A limiting plate (55) is fixedly connected to the surface of the protective plate (53). An insertion hole is opened on the surface of the limiting plate (55). A support plate (56) is fixedly connected to the surface of the cover (2). A fixing rod (57) is slidably inserted into the support plate (56). The fixing rod (57) is slidably connected to the inner wall of the insertion hole of the limiting plate (55). A pull plate (58) is fixedly connected to one end of the fixing rod (57).

6. The serial port expansion module supporting multi-protocol conversion according to claim 5, characterized in that: The circular rod (52) has two torsion springs (54) fitted on its arc surface. The two ends of the torsion springs (54) are fixedly connected to the protective plate (53) and the square plate (51) respectively.

7. The serial port expansion module supporting multi-protocol conversion according to claim 5, characterized in that: The arc surface of the fixing rod (57) is fitted with a second spring (59), and the two ends of the second spring (59) are fixedly connected to the support plate (56) and the pull plate (58) respectively.

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