Terminal block for programmable controller

Abstract

The utility model relates to a terminal block used for a programmable controller, which comprises a terminal block base, a reed, a terminal block main body and a button, the reed is a reed formed by integral punch forming, the terminal block main body is arranged on the terminal block base in a buckling mode, the reed and the button are arranged on the terminal block main body, and the button is arranged on the terminal block base. And the terminal block base is arranged on the programmable controller. Compared with the prior art, the utility model has the advantages of high production and assembly efficiency, better fatigue resistance and stability and the like.

Description

Technical Field

[0001] The utility model relates to a terminal block, in particular to a terminal block used for a programmable controller. Background Art

[0002] Programmable Logic Controller (PC or PLC) is a digital computing controller used for automated control. It can load control instructions into memory for storage and execution at any time. It is widely used in the automatic control of various machines and production processes, becoming the most important, most popular and most widely used industrial control device. It is recognized as one of the three pillars of modern industrial automation (PLC, robot, CAD / CAM).

[0003] Terminal blocks are electronic components used for circuit connection, generally called terminal blocks or connectors. They are usually used in electronic devices such as expansion modules, couplers and PLCs. These devices use terminal blocks to perform input and output with external devices to achieve data interaction with external devices.

[0004] The main defects of the prior art include:

[0005] 1) Most terminal springs on the market are assembled by riveting, which is complicated to assemble and has poor fatigue resistance and stability;

[0006] 2) Most of the existing terminal blocks are directly welded to the main board through solder pins at one end, and the other end is connected to the external wiring by screwing; this not only takes up the space of the programmable controller, but also makes the connection between the terminal block and the PCB board lose flexibility, that is, it is troublesome to disassemble;

[0007] 3) Traditional external wiring uses a terminal block that is screwed together, which is not only cumbersome to operate, but also makes it easy for the wiring to detach from the terminal block, resulting in poor contact. Utility Model Content

[0008] The purpose of the utility model is to provide a terminal block for a programmable controller in order to overcome the defects of the prior art.

[0009] The purpose of the utility model can be achieved through the following technical solutions:

[0010] According to one aspect of the utility model, a terminal block for a programmable controller is provided, comprising a terminal block base, a spring, a terminal block body and a button, wherein the spring is an integrally stamped spring, the terminal block body is mounted on the terminal block base by a snap-fit ​​manner, the spring and the button are mounted on the terminal block body, and the terminal block base is mounted on the programmable controller.

[0011] As a preferred technical solution, the terminal block body is provided with a reed installation cavity for installing a reed.

[0012] As a preferred technical solution, the terminal block body is provided with a button hole for installing a button.

[0013] As a preferred technical solution, the terminal block base includes a buckle and an arc positioning groove respectively matched with the programmable controller.

[0014] As a preferred technical solution, the terminal block base also includes a guide rail for providing a guide function for the installation of the terminal block.

[0015] As a preferred technical solution, one or more guide rails are provided and arranged at the upper and lower ends or the left and right sides of the terminal block.

[0016] As a preferred technical solution, the guide rail includes an upper guide rail and a lower guide rail.

[0017] As a preferred technical solution, the reed includes a pressing sheet and a reed body, and the pressing sheet is in contact with the key.

[0018] As a preferred technical solution, the terminal block body is provided with a wiring hole for external wiring to pass through, and the external wiring is connected to the spring after passing through the wiring hole.

[0019] As a preferred technical solution, the reed body is a reed body made by an integrated stamping process.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1) The utility model adopts an integrally stamped spring sheet, which has high production and assembly efficiency and better fatigue resistance and stability;

[0022] 2) The utility model adopts a terminal block that is integrally installed in a snap-on manner, which solves the problem that the terminal block occupies too much space in the controller;

[0023] 3) The utility model adopts a terminal block that is integrally installed by means of a snap-on method, which makes the connection between the terminal block and the PCB board of the controller more convenient, improves the production efficiency of the controller, and facilitates on-site installation and disassembly, as well as repair and replacement by customers. The snap-on installation replaces the screw installation to prevent poor contact caused by loose connection between the terminal block and the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0027] Figure 4 It is a schematic diagram of the specific structure of the reed of the utility model.

[0028] Among them, 1. terminal block base, 11. buckle, 12. arc positioning groove, 13. upper guide rail, 14. lower guide rail, 2. spring, 21. pressing piece, 22. spring body, 3. terminal block body, 31. spring installation cavity, 32. button hole, 33. wiring hole, 4. button. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] like Figure 1 and Figure 2 As shown, the utility model is a terminal block for a programmable controller, comprising a terminal block base 1, a spring 2, a terminal block body 3 and a button 4, wherein the spring 2 is an integrally stamped spring, the terminal block body 3 is mounted on the terminal block base 1 by a snap-fit ​​method, the spring 2 and the button 4 are mounted on the terminal block body 3, and the terminal block base 1 is mounted on the programmable controller. The terminal block spring adopts an integrally stamped process to replace the common riveted springs on the market; the terminal block adopts an integral snap-fit ​​installation method.

[0031] The reed 2 is installed in the reed installation cavity 31 in the terminal block body 3, and each terminal block body 3 needs to install 18 reeds 2; the button 4 is installed in the button hole 32 in the terminal block body 3, and each terminal block is installed with 18 buttons 32; the terminal block base 1 includes a buckle 11, an arc positioning groove 12, an upper guide rail 13 and a lower guide rail 14; when installing the terminal block, first connect the arc positioning groove 12 to the controller, and then fix it to the controller through the buckle 11; Figure 3 As shown, the upper guide rail 13 and the lower guide rail 14 can ensure the accurate left and right position of the terminal block and provide guidance for the installation of the terminal block; the guide rails of the terminal block can be selected to be one or more, and the arrangement method can be selected at the upper and lower ends or the left and right sides of the terminal block.

[0032] like Figure 4As shown, the reed 2 is divided into two parts, a pressing piece 21 and a reed body 22. When connecting wires, the button 4 is pressed, and the force on the button 4 causes the pressing piece 21 to deform, and a gap is generated between the pressing piece 21 and the reed body 22, so that the external wiring is connected to the reed 2 through the wiring hole 33. When disconnecting wires, the button 4 is also pressed, and the pressing piece 21 and the reed body 22 are separated, and then the external wiring is pulled out.

[0033] The reed body 22 is made by an integrated stamping process, and can remain unchanged during multiple pressing and plugging and unplugging processes, and has better fatigue resistance and stability.

[0034] The terminal block provided by the utility model comprises a terminal block body, wherein the terminal block body has a spring installation cavity for spring installation, a key hole and a threading hole are arranged on the top of the spring installation cavity, and a terminal key is arranged in the key hole; by applying downward pressure to the key, the spring can be driven to leave space for the wiring passing through the threading groove, and after the key pressure is cancelled, the spring returns to its original position under the left and right of the elastic force, thereby compressing or loosening the wiring. Compared with the common riveted springs on the market, the one-piece stamped spring has better fatigue resistance and stability.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A terminal block for a programmable controller, characterized in that: The invention comprises a terminal block base (1), a spring (2), a terminal block body (3) and a button (4); the spring (2) is an integrally stamped spring; the terminal block body (3) is mounted on the terminal block base (1) by snapping; the spring (2) and the button (4) are mounted on the terminal block body (3); and the terminal block base (1) is mounted on a programmable controller.

2. A terminal block for a programmable controller according to claim 1, characterized in that: The terminal block body (3) is provided with a spring installation cavity (31) for installing the spring (2).

3. A terminal block for a programmable controller according to claim 1, characterized in that: The terminal block body (3) is provided with a button hole (32) for installing a button (4).

4. A terminal block for a programmable controller according to claim 1, characterized in that: The terminal block base (1) comprises a buckle (11) and an arc positioning groove (12) respectively matched with a programmable controller.

5. A terminal block for a programmable controller according to claim 1, characterized in that: The terminal block base (1) also includes a guide rail for providing a guiding function for installing the terminal block.

6. A terminal block for a programmable controller according to claim 5, characterized in that: The guide rails are provided with one or more and arranged at the upper and lower ends or the left and right sides of the terminal block.

7. A terminal block for a programmable controller according to claim 5, characterized in that: The guide rail comprises an upper guide rail (13) and a lower guide rail (14).

8. A terminal block for a programmable controller according to claim 1, characterized in that: The reed (2) comprises a pressing sheet (21) and a reed body (22), and the pressing sheet (21) is in contact with the key (4).

9. A terminal block for a programmable controller according to claim 8, characterized in that: The terminal block body (3) is provided with a wiring hole (33) for external wiring to pass through, and the external wiring passes through the wiring hole (33) and is connected to the spring sheet (2).

10. A terminal block for a programmable controller according to claim 8, characterized in that: The leaf spring body (22) is a leaf spring body manufactured by an integrated stamping process.

Images