Assembly fixing structure of industrial PLC terminal connector

Abstract

The utility model discloses an assembly fixed structure of industrial PLC terminal connector, including main protective shell still include having set up the mounting panel of main protective shell outside, set up the first clamping component on the mounting panel, set up the second clamping component on main protective shell, fixedly connected on the limit mouth of main protective shell, fixedly connected on the limit stopper of mounting panel, set up the connecting base piece between main protective shell and mounting panel. Compared with traditional riveting fixed mode, the limit stopper in this structure is connected in the limit mouth, the first clamping component cooperates with the clamping plate, the second clamping component cooperates with the terminal body, and the cooperation of multiple clamping structures does not need the help of additional tools for installation, does not need to adjust the riveting related device, improves the overall efficiency when batch production, when needing to disassemble maintenance or replacement to main protective shell, mounting panel, connecting base piece, terminal body etc. part, can directly realize separation through relieving the connection of each clamping structure.

Description

Technical Field

[0001] This utility model relates to the field of fixing structures, and in particular to the assembly and fixing structure of industrial PLC terminal connectors. Background Technology

[0002] In the field of existing electronic components and precision mechanical connection technology, the fixing process of terminals and springs plays a crucial role. This process is not only related to the stable connection between various components of the product, but also directly affects the overall reliability of the product.

[0003] In existing technologies, the riveting fixing method commonly used in the industry, while having the advantages of simple structure and high initial connection strength, has drawbacks in practical applications. Traditional riveting uses mechanical pressure to deform the rivet, forming a permanent mechanical interlocking structure at the contact surface between the terminal and the spring. When this connection method requires disassembly and maintenance, destructive methods such as drilling and shearing must be used to separate the components. More seriously, destructive disassembly often leads to deformation of the surrounding structure, requiring the replacement of adjacent parts during most secondary assembly, which increases the material and labor costs of each maintenance. Furthermore, during the deformation and extrusion process of the rivet, the metal material undergoes plastic flow, forming tiny protrusions at the edge of the connection. These burrs can scratch the coating of adjacent components or the surface of precision parts during installation. Therefore, it is necessary to improve the assembly and fixing structure of industrial PLC terminal connectors to solve the above problems. Utility Model Content

[0004] To overcome the inconvenience of disassembly when using riveting, and the fact that burrs formed by material deformation during the extrusion process can scratch the connecting components and affect subsequent use.

[0005] The technical solution of this utility model is as follows: an assembly and fixing structure for an industrial PLC terminal connector, including a main protective shell, a mounting plate disposed outside the main protective shell, a first snap-fit ​​component disposed on the mounting plate, a second snap-fit ​​component disposed on the main protective shell, a limiting port fixedly connected to the main protective shell, a limiting block fixedly connected to the mounting plate, a connecting base block disposed between the main protective shell and the mounting plate, a snap-fit ​​plate fixedly connected to the connecting base block, a first spring piece fixedly connected to the connecting base block, a terminal body disposed between the main protective shell and the mounting plate, a second spring piece fixedly connected to the terminal body, an external plug disposed between the main protective shell and the mounting plate, a connecting wire fixedly connected to the external plug, and the limiting block snap-fitted into the limiting port.

[0006] Preferably, the limiting port has a limiting slot at the relative position of the limiting block, and the limiting block is snapped into the slot.

[0007] Preferably, the connecting base block has a partition groove, and the connecting base block cooperates with the second spring piece through the partition groove to limit the terminal body.

[0008] Preferably, the first snap-fit ​​assembly includes a first fixing buckle fixedly connected to the mounting plate, a first snap block slidably connected to the first fixing buckle, a first spring fixedly connected to the first snap block, and the first snap block snap-fitted to the snap-fit ​​plate.

[0009] Preferably, the mounting plate has a through slot, and the snap-fit ​​plate passes through the through slot and snaps into the first snap-fit ​​block.

[0010] Preferably, the first fixing buckle has a limiting groove at the relative position of the first locking block, and the first locking block is slidably connected to the groove.

[0011] Preferably, the second snap-fit ​​assembly includes a second fixing buckle fixedly connected to the main protective shell, a second snap block slidably connected to the second fixing buckle, a second spring fixedly connected between the second fixing buckle and the second snap block, and the second snap block snap-fitted to the terminal body.

[0012] Preferably, the terminal body has a matching slot at the relative position of the second card block, and the second card block is snapped into the slot.

[0013] The beneficial effects of this utility model are:

[0014] 1. Compared to traditional riveting fixing methods, in this structure, the limiting block is connected inside the limiting port. The first locking component cooperates with the locking plate, and the second locking component cooperates with the terminal body. The cooperation of multiple locking structures does not require additional tools for installation, nor does it require adjustment of riveting-related devices. This significantly shortens the assembly time of a single industrial PLC terminal connector and improves the overall efficiency during mass production. At the same time, when it is necessary to disassemble, repair, or replace components such as the main protective shell, mounting plate, connecting base block, and terminal body, separation can be achieved directly by disconnecting the connection of each locking structure. This avoids the damage to components that may be caused by riveting during disassembly and greatly reduces the difficulty of maintenance.

[0015] 2. This structure forms a multi-point coordinated fixing mechanism through multiple locking relationships, such as the locking of the limiting block and the limiting port, the cooperation of the first locking component and the locking plate, and the cooperation of the second locking component and the terminal body. When a certain locking part is subjected to external force impact, other locking structures can share part of the force, reduce the stress load on the individual part, thereby enhancing the fatigue resistance and connection stability of the overall structure under complex working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the assembly and fixing structure of the industrial PLC terminal connector of this utility model;

[0017] Figure 2 for Figure 1 A rear view structural schematic diagram of the main protective shell and its connected components;

[0018] Figure 3 for Figure 1 A disassembled structural diagram of the main protective shell and its connected components;

[0019] Figure 4 This is a schematic diagram of the structure of the first snap-fit ​​assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the second snap-fit ​​component of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Main protective shell; 21. Limiting port; 22. Limiting block; 23. Snap-fit ​​plate; 24. First spring; 25. Terminal body; 26. Second spring; 27. Connecting base block; 28. External plug; 29. ​​Connecting wire; 210. First fixing buckle; 211. First locking block; 212. First spring; 213. Second fixing buckle; 214. Second locking block; 215. Second spring; 4. Mounting plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figure 1 - Figure 5This utility model provides an embodiment of an assembly and fixing structure for an industrial PLC terminal connector, including a main protective shell 1, a mounting plate 4 disposed outside the main protective shell 1, a first snap-fit ​​component disposed on the mounting plate 4, a second snap-fit ​​component disposed on the main protective shell 1, a limiting port 21 fixedly connected to the main protective shell 1, a limiting block 22 fixedly connected to the mounting plate 4, a connecting base block 27 disposed between the main protective shell 1 and the mounting plate 4, a snap-fit ​​plate 23 fixedly connected to the connecting base block 27, a first spring 24 fixedly connected to the connecting base block 27, a terminal body 25 disposed between the main protective shell 1 and the mounting plate 4, a second spring 26 fixedly connected to the terminal body 25, an external plug 28 disposed between the main protective shell 1 and the mounting plate 4, and a connecting wire 29 fixedly connected to the external plug 28. The limiting block 22 is snapped into the limiting port 21. When the assembly and fixing structure for the industrial PLC terminal connector is in operation, the main protective shell 1 serves as a base component, providing a mounting carrier for other components, and the connecting base block 27 is placed on the main protective shell. After placing the terminal body 25 inside the connecting base block 27, align the second spring piece 26 with the slot of the connecting base block 27. The terminal body 25 passes through the connecting base block 27 and the main protective shell 1, and then, through cooperation with the second snap-fit ​​assembly, completes the assembly with the connecting base block 27 and the main protective shell 1. Align the through hole of the mounting plate 4 with the snap-fit ​​plate 23, align the limiting block 22 with the limiting port 21, and then push the mounting plate 4 towards the main protective shell 1. After snapping with the snap-fit ​​plate 23 through the first snap-fit ​​assembly, the assembly is complete. After assembling the main protective shell 1 and mounting plate 4 in pairs, insert the external plug 28 between the connecting base blocks 27. First, the first spring 24 is compressed outward by pressing the bottom end of the external plug 28. After the external plug 28 passes through the plug, the first spring 24 pops up to restrict the external plug 28. After the assembly is completed, connect the bottom connector of the second spring 26 to the external connector. Then, transmit signals or power through the connecting line 29 and connect the external plug 28 to the terminal body 25 to realize the transmission of signals or power.

[0024] Please see Figure 1 - Figure 5In this embodiment, the limiting port 21 has a limiting groove at the relative position of the limiting block 22. The limiting block 22 is engaged with the inside of the groove, limiting the relative displacement of the two in the horizontal and vertical directions, thereby ensuring the flushness between the main protective shell 1 and the mounting plate 4. The connecting base block 27 has a partition groove. The connecting base block 27 cooperates with the second spring piece 26 through the partition groove to limit the terminal body 25. The partition groove restricts the movement space of the second spring piece 26 after installation. When the terminal body 25 is subjected to external force, part of the impact force can be absorbed by the elastic deformation of the second spring piece 26. At the same time, the boundary of the partition groove restricts the displacement of the terminal body 25, ensuring that the terminal body 25 is always in the preset working position, ensuring the stability of its connection. The first snap-fit ​​assembly includes a first fixing buckle 210 fixedly connected to the mounting plate 4, a first snap-fit ​​block 211 slidably connected to the first fixing buckle 210, and a first spring 212 fixedly connected to the first snap-fit ​​block 211. The first snap-fit ​​block 211 is snap-fitted onto the snap-fit ​​plate 23. The first spring 212 provides continuous elastic pressure to the first snap-fit ​​block 211, causing the first snap-fit ​​block 211 to snap tightly into the slot of the snap-fit ​​plate 23. When subjected to external force, the elastic force of the first spring 212 is transmitted to the snap-fit ​​plate 23 through the first snap-fit ​​block 211, enhancing the snap-fit ​​force between the two. The mounting plate 4 has a through slot through which the snap-fit ​​plate 23 passes and snaps into the first snap-fit ​​block 211. The size of the through slot is adapted to the cross-section of the snap-fit ​​plate 23. The first fixing buckle 210 provides initial guidance and restriction on the insertion direction and position of the snap-fit ​​plate 23, preventing it from shifting or tilting during installation and ensuring accurate alignment and engagement with the first snap-fit ​​block 211. Simultaneously, the first snap-fit ​​block 211 and the snap-fit ​​plate 23 form lateral support, restricting the connection between the main protective shell 1 and the mounting plate 4. The first fixing buckle 210 has a limiting groove at the relative position of the first snap-fit ​​block 211. The first snap-fit ​​block 211 is slidably connected to the groove, which constrains its movement, allowing it to move only along the extension direction of the groove. This prevents the first snap-fit ​​block 211 from jamming or shifting during movement, ensuring smooth completion under the action of the first spring 212. The second locking assembly includes a second fixing buckle 213 fixedly connected to the main protective shell 1, a second locking block 214 slidably connected to the second fixing buckle 213, and a second spring 215 fixedly connected between the second fixing buckle 213 and the second locking block 214. The second locking block 214 is locked to the terminal body 25. The elastic force of the second spring 215 ensures that the second locking block 214 always maintains pressure towards the terminal body 25, ensuring tight contact between the locking part of the second locking block 214 and the terminal body 25. Even when the main protective shell 1 is subjected to vibration or temperature changes and undergoes slight deformation, the second spring 215 can maintain a stable locking state, effectively preventing the terminal body 25 from falling out of the main protective shell 1.The terminal body 25 has a matching slot at a position opposite to the second locking block 214. The second locking block 214 is engaged with the slot. When the terminal body 25 is subjected to axial tension, the inner wall of the slot will generate a reverse blocking force on the second locking block 214. Combined with the elastic force of the second spring 215, this effectively resists external forces and prevents the second locking block 214 from slipping out of the slot, further improving the connection reliability between the terminal body 25 and the main protective shell 1.

[0025] During operation, the assembly and fixing structure of the industrial PLC terminal connector uses the main protective shell 1 as a base component, providing a mounting carrier for other components. After placing the connecting base block 27 inside the main protective shell 1, the terminal body 25 is placed inside the connecting base block 27. The second spring 26 is then aligned with the slot of the connecting base block 27. By moving the second locking block 214, it slides on the second fixing buckle 213. After the terminal body 25 passes through the connecting base block 27 and the main protective shell 1, the second locking block 214 is released. The second spring 215 provides a pushing force to the second locking block 214, pushing it to reset and simultaneously engaging the second locking block 214 with the terminal body 25, thus restricting the terminal body 25. This completes the assembly of the terminal body 25 with the connecting base block 27 and the main protective shell 1. The through hole of the mounting plate 4 is aligned with the snap-fit ​​plate 23, and the limiting locking block 22 is aligned with the limiting port 21. Then, by moving the first locking block 211 to slide it on the first fixing buckle 210, the mounting plate 4 is pushed towards the main protective shell 1, so that the snap-fit ​​plate 23 passes through the through slot of the mounting plate 4. The first locking block 211 is then released, and the first spring 212 provides a pushing force to the first locking block 211, pushing the first locking block 211 to reset and snap-fit ​​with the snap-fit ​​plate 23, thus completing the assembly of the main protective shell 1 and the mounting plate 4. After completion, the external plug 28 is inserted between the connecting base blocks 27. First, the bottom end of the external plug 28 squeezes the first spring piece 24 to compress the first spring piece 24 outward. After the external plug 28 passes through the plug, the first spring piece 24 springs up to restrict the external plug 28. After the assembly is completed, the bottom connector of the second spring piece 26 is connected to the external connector, and the signal or power is transmitted through the connecting line 29. The external plug 28 is connected to the terminal body 25 to realize the transmission of signal or power.

[0026] Through the above steps, compared with the traditional riveting fixing method, in this structure, the limiting block 22 is snapped into the inside of the limiting port 21. The first snapping component cooperates with the snapping plate 23, and the second snapping component cooperates with the terminal body 25. The cooperation of multiple snapping structures does not require the use of additional tools for installation. This solves the problem that the riveting fixing method is inconvenient to disassemble, and that the burrs formed by the material deformation during the extrusion process can scratch the connecting components and affect subsequent use.

Claims

1. An assembly and fixing structure for an industrial PLC terminal connector, comprising a main protective shell (1), characterized in that: It also includes a mounting plate (4) disposed outside the main protective shell (1), a first snap-fit ​​assembly disposed on the mounting plate (4), a second snap-fit ​​assembly disposed on the main protective shell (1), a limiting port (21) fixedly connected to the main protective shell (1), a limiting block (22) fixedly connected to the mounting plate (4), a connecting base block (27) disposed between the main protective shell (1) and the mounting plate (4), a snap-fit ​​plate (23) fixedly connected to the connecting base block (27), a first spring piece (24) fixedly connected to the connecting base block (27), a terminal body (25) disposed between the main protective shell (1) and the mounting plate (4), a second spring piece (26) fixedly connected to the terminal body (25), an external plug (28) disposed between the main protective shell (1) and the mounting plate (4), a connecting wire (29) fixedly connected to the external plug (28), and the limiting block (22) snap-fitted into the limiting port (21).

2. The assembly and fixing structure of the industrial PLC terminal connector according to claim 1, characterized in that: The limiting port (21) has a limiting slot at the relative position of the limiting block (22), and the limiting block (22) is snapped into the slot.

3. The assembly and fixing structure of the industrial PLC terminal connector according to claim 1, characterized in that: A slot is provided on the connecting base block (27). The connecting base block (27) cooperates with the second spring piece (26) through the slot to limit the terminal body (25).

4. The assembly and fixing structure of the industrial PLC terminal connector according to claim 1, characterized in that: The first snap-fit ​​assembly includes a first fixing buckle (210) fixedly connected to the mounting plate (4), a first snap block (211) slidably connected to the first fixing buckle (210), a first spring (212) fixedly connected to the first snap block (211), and the first snap block (211) snap-fit ​​connected to the snap-fit ​​plate (23).

5. The assembly and fixing structure of the industrial PLC terminal connector according to claim 4, characterized in that: The mounting plate (4) has a through slot, and the snap-fit ​​plate (23) passes through the through slot and snaps into the first snap-fit ​​block (211).

6. The assembly and fixing structure of the industrial PLC terminal connector according to claim 4, characterized in that: The first fixing buckle (210) has a limiting groove at the relative position of the first locking block (211), and the first locking block (211) is slidably connected to the groove.

7. The assembly and fixing structure of the industrial PLC terminal connector according to claim 1, characterized in that: The second snap-fit ​​assembly includes a second fixing buckle (213) fixedly connected to the main protective shell (1), a second snap block (214) slidably connected to the second fixing buckle (213), a second spring (215) fixedly connected between the second fixing buckle (213) and the second snap block (214), and the second snap block (214) snap-fit ​​connected to the terminal body (25).

8. The assembly and fixing structure of the industrial PLC terminal connector according to claim 7, characterized in that: The terminal body (25) has a matching slot at the relative position of the second card block (214), and the second card block (214) is snapped into the slot.

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