A device for rapid wiring of a PLC

Abstract

The utility model discloses a kind of PLC quick wiring devices, applied in wiring terminal technical field, including mounting seat, multiple installation grooves are equidistantly opened in the inside of mounting seat, the inside fixedly connected with electrically-conductive block of installation groove, the inside of installation groove is symmetrically provided with the spring card of electrically-conductive block threading groove clamping, the inside of installation groove is symmetrically opened with sliding slot, the inside sliding connection with the limiting block of electrically-conductive block two ends ear clamping of sliding slot, the inside of sliding slot is provided with compression mechanism, the top of mounting seat is opened with the guide slot of installation groove intercommunication;The utility model is designed with sliding slot in the inside of installation groove, the inside of sliding slot is installed with the limiting block for wire secondary clamping, after wire is inserted into the inside of installation groove, can pass through the double clamping of spring card and limiting block, improve the fixed stability of wire, avoid the situation that wire is pulled out and is disconnected.

Description

Technical Field

[0001] This utility model belongs to the field of terminal block technology, and specifically relates to a device for quick wiring of PLC. Background Technology

[0002] A PLC, also known as a programmable logic controller, is an electronic device used for automation control. It can receive and send various types of electrical or electronic signals to control and monitor almost all kinds of mechanical and electrical systems. The terminal blocks on a PLC are devices for quick wiring between the PLC and external devices.

[0003] Traditional terminal blocks are divided into bolt-on terminals and spring terminals. Spring terminals are electrical connection devices that use spring pressure to clamp wires, eliminating the need for screws. They are widely used in automated control systems such as PLCs, relays, and distribution boxes. Their core features are quick wiring and tool-free operation. However, they also have certain problems in use. For example, the clamping force of traditional spring terminals relies entirely on the supporting elasticity of the spring plate. Traditional spring terminals usually use a single spring clamping mechanism to fix the wires, relying solely on the elasticity of the spring plate to hold the wires. After vibration, temperature changes, or long-term use, the spring will fatigue, leading to a decrease in clamping force, and the wires may loosen or even fall off. Traditional spring terminals have limited resistance to axial tensile forces on the wires. When subjected to external force, the wires are prone to detachment and being pulled out, affecting the reliability of the electrical connection. Utility Model Content

[0004] The purpose of this invention is to provide a quick-connection device for PLCs, which has the advantage of high stability.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a PLC quick wiring device, including a mounting base, wherein multiple mounting slots are equidistantly provided inside the mounting base, a conductive block is fixedly connected inside the mounting slot, spring clips that engage with the wire passage slots of the conductive block are symmetrically arranged inside the mounting slot, a sliding groove is symmetrically provided inside the mounting slot, a limiting block that engages with the ears at both ends of the conductive block is slidably connected inside the sliding groove, a pressing mechanism is provided inside the sliding groove, a guide groove communicating with the mounting slot is provided on the top of the mounting base, a pressure block is slidably connected inside the guide groove, and a moving mechanism is provided between the pressure block and the limiting block.

[0006] The above technical solution is adopted: This utility model has a sliding groove designed inside the mounting groove, and a limiting block for secondary locking of the wire is installed inside the sliding groove. When the wire is inserted into the mounting groove, it can be locked by the spring card and the limiting block, which improves the fixing stability of the wire and avoids the situation of the wire being pulled out.

[0007] The present invention is further configured such that through slots are symmetrically provided inside the mounting groove, and the through slots are connected to the outside of the mounting base.

[0008] The above technical solution facilitates the insertion of external wires into the mounting slot via the through-slot.

[0009] The present invention is further configured such that, symmetrically fixedly connected to the inside of the mounting groove are two locking blocks, which are respectively located on both sides of the pressure block and slidably connected to the surface of the pressure block, and the spring clip is fixedly connected to the locking block.

[0010] The above technical solution involves sliding and limiting the pressure block and fixing the spring clip.

[0011] The present invention is further configured such that the pressing mechanism includes a guide rod fixedly connected inside the sliding groove, the guide rod being slidably connected to the limiting block, and a support spring being sleeved on the surface of the guide rod, the support spring being engaged with the inner wall of the sliding groove and the limiting block.

[0012] The above technical solution is adopted: the guide rod slides and limits the limiting block and fixes the support spring. The support spring is used to provide a reverse thrust to the limiting block, so that the limiting block moves towards the ear of the conductive block.

[0013] The present invention is further configured such that the moving mechanism includes two force-applying blocks symmetrically assembled on both sides of the pressure block, and the top of the limiting block is provided with a force-receiving groove that is slidably connected to the force-applying blocks.

[0014] The above technical solution is as follows: When the pressure block is pressed down, it can drive the force-applying block to move down. The inclined surface of the force-applying block, in conjunction with the force-receiving groove, can move the two limiting blocks towards the center position, shortening the distance between the two limiting blocks and creating a gap between the limiting blocks and the ears of the conductive block. When an external wire is inserted, the pressure block is released, and after the pressure block resets, the limiting blocks reset. The limiting blocks move towards the ears of the conductive block, pressing the wire tightly onto the ears of the conductive block.

[0015] The present invention is further configured such that the interior of the mounting groove is symmetrically provided with a lower pressure bracket bolted to the pressure block.

[0016] Using the above technical solution: when the pressure block is pressed down, the lower pressure bracket moves down, which can cause the angle of the end of the spring card that contacts the wire slot of the conductive block to change, and create space between the spring card and the wire slot of the conductive block for inserting wires.

[0017] In summary, this utility model has the following beneficial effects: 1. This utility model has a sliding groove designed inside the mounting groove, and a limiting block for secondary locking of the wire is installed inside the sliding groove. When the wire is inserted into the mounting groove, it can be locked by the spring card and the limiting block, which improves the fixing stability of the wire and avoids the wire from being pulled out. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural cross-sectional view of the present invention; Figure 3 This is a sectional view of the mounting base structure of this utility model; Figure 4 This is the utility model Figure 1 Enlarged view of point A in the middle.

[0019] Reference numerals: 1. Mounting base; 2. Mounting groove; 3. Conductive block; 4. Spring clip; 5. Sliding groove; 6. Limiting block; 7. Pressing mechanism; 71. Guide rod; 72. Support spring; 8. Guide groove; 9. Pressing block; 10. Moving mechanism; 101. Force-applying block; 102. Force-receiving groove; 11. Through groove; 12. Locking block; 13. Lowering bracket. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1: refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A PLC quick wiring device includes a mounting base 1. Multiple mounting slots 2 are equidistantly spaced inside the mounting base 1. Conductive blocks 3 are fixedly connected inside the mounting slots 2. Spring clips 4, which engage with the wire passages of the conductive blocks 3, are symmetrically arranged inside the mounting slots 2. Sliding slots 5 are symmetrically arranged inside the mounting slots 2. Limiting blocks 6, which engage with the ears at both ends of the conductive blocks 3, are slidably connected inside the sliding slots 5. A pressing mechanism 7 is provided inside the sliding slots 5. A guide slot 8, communicating with the mounting slots 2, is opened at the top of the mounting base 1. A pressure block 9 is slidably connected inside the guide slot 8. A moving mechanism 10 is provided between the pressure block 9 and the limiting block 6. By designing the sliding slots 5 inside the mounting slots 2 and installing the limiting blocks 6 inside the sliding slots 5 for secondary wire locking, when the wire is inserted into the mounting slot 2, it can be double-locked by the spring clips 4 and the limiting blocks 6, improving the fixing stability of the wire and preventing it from being pulled out.

[0022] refer to Figure 1 , Figure 2 and Figure 3The mounting slot 2 has symmetrical through slots 11 inside, which are connected to the outside of the mounting base 1. By setting through slots 11, it is convenient for external wires to be inserted into the mounting slot 2 through through slots 11.

[0023] refer to Figure 2 and Figure 3 The mounting slot 2 is symmetrically fixedly connected with two locking blocks 12. The two locking blocks 12 are located on both sides of the pressure block 9 and are slidably connected to the surface of the pressure block 9. The spring card 4 is fixedly connected to the locking blocks 12. By setting the locking blocks 12, the pressure block 9 is slidably limited and the spring card 4 is fixed.

[0024] refer to Figure 2 and Figure 3 The clamping mechanism 7 includes a guide rod 71 fixedly connected inside the sliding groove 5. The guide rod 71 is slidably connected to the limiting block 6. A support spring 72 is sleeved on the surface of the guide rod 71. The support spring 72 is engaged with the inner wall of the sliding groove 5 and the limiting block 6. By setting the guide rod 71 and the support spring 72, the guide rod 71 slides and limits the limiting block 6 and fixes the support spring 72. The support spring 72 is used to provide a reverse thrust to the limiting block 6, so that the limiting block 6 moves towards the ear of the conductive block 3.

[0025] refer to Figure 2 and Figure 4 The moving mechanism 10 includes two force-applying blocks 101 symmetrically mounted on both sides of the pressure block 9. The top of the limiting block 6 is provided with a force-receiving groove 102 that is slidably connected to the force-applying block 101. By setting the force-applying block 101 and the force-receiving groove 102, when the pressure block 9 is pressed down, the force-applying block 101 can be driven to move downward. The inclined surface of the force-applying block 101, in conjunction with the action of the force-receiving groove 102, can move the two limiting blocks 6 toward the center position, shortening the distance between the two limiting blocks 6 and creating a gap between the limiting blocks 6 and the ears of the conductive block 3. When the external wire is inserted, the pressure block 9 is released, the pressure block 9 is reset, the limiting block 6 is reset, and the limiting block 6 moves toward the ears of the conductive block 3, pressing the wire tightly onto the ears of the conductive block 3.

[0026] refer to Figure 2 The mounting slot 2 is symmetrically equipped with a pressing bracket 13 that is bolted to the pressure block 9. By setting the pressing bracket 13, when the pressure block 9 is pressed down, the pressing bracket 13 moves down, which can cause the end of the spring card 4 that contacts the wire groove of the conductive block 3 to change the angle, and open up space between the spring card 4 and the wire groove of the conductive block 3 for wire insertion.

[0027] Brief description of usage: When it is necessary to insert a wire, press down the pressure block 9. The pressure block 9 moves the pressure support 13 down. Under the action of the moving mechanism 10, the pressure block 9 simultaneously moves the limiting block 6 away from the ear of the conductive block 3, so that the spring card 4 and the wire-passing groove of the conductive block 3 are freed up with the ear of the conductive block 3 and the limiting block 6 for wire insertion. When the pressure block 9 is no longer pressed, under the elastic action of the spring card 4 and the support spring 72, the pressure block 9 resets, and the limiting block 6 and the spring card 4 return to their original positions. The limiting block 6 and the spring card 4, together with the ear of the conductive block 3 and the wire-passing groove of the conductive block 3, double-lock the wire, improving stability.

[0028] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A device for quick wiring of a PLC, comprising a mounting base (1), characterized in that: The mounting base (1) has multiple mounting slots (2) equidistantly spaced inside. A conductive block (3) is fixedly connected inside the mounting slot (2). A spring clip (4) is symmetrically arranged inside the mounting slot (2) and engages with the wire groove of the conductive block (3). A sliding slot (5) is symmetrically arranged inside the mounting slot (2). A limiting block (6) is slidably connected inside the sliding slot (5) and engages with the ears at both ends of the conductive block (3). A pressing mechanism (7) is arranged inside the sliding slot (5). A guide slot (8) communicating with the mounting slot (2) is opened on the top of the mounting base (1). A pressure block (9) is slidably connected inside the guide slot (8). A moving mechanism (10) is arranged between the pressure block (9) and the limiting block (6).

2. The device for quick wiring of a PLC according to claim 1, characterized in that: The mounting slot (2) has symmetrical through slots (11) inside, and the through slots (11) are connected to the outside of the mounting base (1).

3. The device for quick wiring of a PLC according to claim 1, characterized in that: The mounting groove (2) is symmetrically fixedly connected with a locking block (12). The two locking blocks (12) are located on both sides of the pressure block (9) and are slidably connected to the surface of the pressure block (9). The spring card (4) is fixedly connected to the locking block (12).

4. The device for quick wiring of a PLC according to claim 1, characterized in that: The pressing mechanism (7) includes a guide rod (71) fixedly connected inside the sliding groove (5). The guide rod (71) is slidably connected to the limiting block (6). A support spring (72) is sleeved on the surface of the guide rod (71). The support spring (72) is engaged with the inner wall of the sliding groove (5) and the limiting block (6).

5. The device for quick wiring of a PLC according to claim 1, characterized in that: The moving mechanism (10) includes two force-applying blocks (101) symmetrically assembled on both sides of the pressure block (9), and the top of the limiting block (6) is provided with a force-receiving groove (102) that is slidably connected to the force-applying block (101).

6. The device for quick wiring of a PLC according to claim 1, characterized in that: The mounting groove (2) is symmetrically provided with a lower pressure bracket (13) that is bolted to the pressure block (9).

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