Programmable controller with detachable function extension module

Abstract

The utility model relates to a programmable controller with a detachable function expansion module, which comprises a function expansion module, a function expansion board and a controller main body, the function expansion board is installed on the function expansion module in a buckling mode, and the function expansion module is installed on the controller main body through a buckle and a guide rib position groove. Compared with the prior art, the utility model meets the expansion of different functions, and has the advantages of better flexibility and ductility and the like.

Description

Technical Field

[0001] The utility model relates to a programmable controller, in particular to a programmable controller with a detachable function expansion module. 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] Function expansion module is an expansion card used for signal transmission. It is usually used in electronic devices of programmable controllers. These devices use function expansion modules to perform input and output with external devices to achieve data interaction with external devices.

[0004] In most of the programmable controller products currently on the market, various functions are concentrated on the main shell of the programmable controller, which makes the product larger and occupies the space of the programmable controller, which is not conducive to the flexible use of the product in a limited space.

[0005] After searching, Chinese patent announcement number CN220671835U discloses an output port function expansion module, including a main control module U1, an output control circuit, a communication module and an address selection module, which is used to expand the output port of the generator set controller, thereby solving the high cost problem of achieving control by increasing the number of controllers. However, the existing patent still does not solve the problems of large size of the controller itself and inconvenient installation. Utility Model Content

[0006] The purpose of the utility model is to provide a programmable controller with a detachable function expansion module in order to overcome the defects of the prior art.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] According to one aspect of the utility model, a programmable controller with a detachable function expansion module is provided, comprising a function expansion module, a function expansion board and a controller body, wherein the function expansion board is mounted on the function expansion module by means of a snap-fit, and the function expansion module is mounted on the controller body by means of a snap-fit ​​and a guide rib groove.

[0009] As a preferred technical solution, the function expansion board is provided with a positioning column hole, and the function expansion module is provided with a positioning column matching the positioning column hole.

[0010] As a preferred technical solution, the function expansion board is provided with a fixed bayonet, and the function expansion module is provided with an expansion board fixing buckle matching the fixed bayonet.

[0011] As a preferred technical solution, the function expansion module is provided with a first detachable buckle and a second detachable buckle, and the controller body is provided with a bayonet protrusion respectively cooperating with the first detachable buckle and the second detachable buckle.

[0012] As a preferred technical solution, the controller body is provided with an A card slot or a B card slot for installing a function expansion module.

[0013] As a preferred technical solution, the controller body is provided with guide ribs that cooperate with the guide rib grooves.

[0014] As a preferred technical solution, four guide ribs and four guide rib grooves are provided.

[0015] As a preferred technical solution, the function expansion module is placed vertically into the A card slot or the B card slot along the guide ribs.

[0016] As a preferred technical solution, the function expansion board includes a TF storage expansion unit, a digital input expansion unit and / or a CAN-485 communication expansion unit.

[0017] As a preferred technical solution, after the function expansion module is engaged with the controller body, the surfaces of the two are flush.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1) The detachable function expansion module of the utility model is different from the commonly seen integrated programmable controller on the market. The detachable function expansion module of the utility model can meet the expansion of different functions and has better flexibility and scalability.

[0020] 2) The utility model adopts an expansion module that is integrally installed in a snap-fit ​​manner, making the connection between the function expansion module and the PCB board more convenient.

[0021] 3) The utility model improves the working efficiency of the controller and is convenient for customers to install and disassemble, repair and replace on site. The buckle replaces the screw installation to prevent poor contact caused by loose connection between the expansion module and the controller.

[0022] 4) The utility model adopts a tool-free snap-on method, which solves the problem of inconvenient installation when the space is narrow. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the functional expansion module of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the functional expansion board of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model after the functional expansion board is installed;

[0026] Figure 4 This is a schematic diagram of the functional expansion module and functional expansion board of the utility model after assembly;

[0027] Figure 5 This is a schematic diagram of the utility model in which the function expansion module is installed on the controller body.

[0028] Wherein: 1. Function expansion module, 11. Positioning column, 12. Expansion board fixing buckle, 13. First disassembly buckle, 14. Second disassembly buckle, 15. Guide rib slot;

[0029] 2. Function expansion board, 21. Positioning column hole, 22. Fixed bayonet;

[0030] 3. Controller body, 31. B card slot, 32. A card slot, 33. Guide ribs, 34. Card slot convex point. DETAILED DESCRIPTION

[0031] 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.

[0032] like Figure 1-5 As shown, a programmable controller with a detachable function expansion module includes a function expansion module 1, a function expansion board 2 and a controller body 3, wherein the function expansion board 2 is mounted on the function expansion module 1 by means of a snap-fit ​​method, and the function expansion module 1 is mounted on the controller body 3 by means of a snap-fit ​​and a guide rib groove 15.

[0033] The function expansion board 2 includes a TF storage expansion unit, a digital input expansion unit, and a CAN-485 communication expansion unit. Through the standard installation slots on the function expansion module 1, the function expansion board TF storage expansion unit, the digital input expansion unit, the CAN-485 communication expansion unit, etc. are gently pressed onto the slots to achieve unified and convenient installation and combine into an easily expandable function module.

[0034] like Figure 1 and Figure 2 As shown, the function expansion board 2 is provided with a positioning column hole 21, and the function expansion module 1 is provided with a positioning column 11 matching the positioning column hole 21. The function expansion board 2 is provided with a fixing bayonet 22, and the function expansion module 1 is provided with an expansion board fixing buckle 12 matching the fixing bayonet 22.

[0035] like Figure 1 and Figure 5 As shown, the function expansion module 1 is provided with a first detachable buckle 13 and a second detachable buckle 14 , and the controller body 3 is provided with a bayonet protrusion 34 respectively cooperating with the first detachable buckle 13 and the second detachable buckle 14 .

[0036] like Figure 4 and Figure 5 The controller body 3 is provided with an A card slot 32 or a B card slot 31 for installing the function expansion module 1. The controller body 3 is provided with a guide rib position 33 that cooperates with the guide rib position slot 15. There are four guide rib positions 33 and four guide rib position slots 15. The function expansion module 1 is vertically placed in the A card slot 32 or the B card slot 31 along the guide rib position 33. After the function expansion module 1 is engaged with the controller body 3, the surfaces of the two are flush.

[0037] The specific installation process of this utility model is as follows:

[0038] First, place the controller body 3 horizontally, align the function expansion module 1 with the A or B slot, vertically insert it into the A or B slot of the controller body along the four guide ribs, and press the function expansion module by hand. When you hear a clear snapping sound and the surface of the function expansion module is flush with the surface of the controller body, the expansion module is installed. This design is convenient for users and allows them to operate the product more quickly. If you want to remove the function expansion module, you only need to align a flat-blade screwdriver with the bayonet and gently lift it up. The function expansion module will pop out, and other function expansion modules can be replaced and installed without any screws to fix it. Compared with other common products on the market, this simple disassembly and assembly of function modules has better convenience and stability.

[0039] 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 programmable controller with a detachable function expansion module, characterized in that: The invention comprises a function expansion module (1), a function expansion board (2) and a controller body (3); the function expansion board (2) is mounted on the function expansion module (1) by means of a snap-fit ​​method, and the function expansion module (1) is mounted on the controller body (3) by means of a snap-fit ​​and a guide rib slot (15).

2. A programmable controller with a detachable function expansion module according to claim 1, characterized in that: The function expansion board (2) is provided with a positioning column hole (21), and the function expansion module (1) is provided with a positioning column (11) matching the positioning column hole (21).

3. A programmable controller with a detachable function expansion module according to claim 1, characterized in that: The function expansion board (2) is provided with a fixing bayonet (22), and the function expansion module (1) is provided with an expansion board fixing buckle (12) matching the fixing bayonet (22).

4. A programmable controller with a detachable function expansion module according to claim 1, characterized in that: The function expansion module (1) is provided with a first detachable buckle (13) and a second detachable buckle (14), and the controller body (3) is provided with a bayonet protrusion (34) respectively cooperating with the first detachable buckle (13) and the second detachable buckle (14).

5. A programmable controller with a detachable function expansion module according to claim 1, characterized in that: The controller body (3) is provided with an A card slot (32) or a B card slot (31) for installing the function expansion module (1).

6. A programmable controller with a detachable function expansion module according to claim 5, characterized in that: The controller body (3) is provided with a guide rib position (33) that matches the guide rib position groove (15).

7. A programmable controller with a detachable function expansion module according to claim 6, characterized in that: The guide rib positions (33) and the guide rib position grooves (15) are each provided with four.

8. A programmable controller with a detachable function expansion module according to claim 6, characterized in that: The function expansion module (1) is vertically placed into the A card slot (32) or the B card slot (31) along the guide ribs (33).

9. A programmable controller with a detachable function expansion module according to claim 1, characterized in that: The function expansion board (2) comprises a TF storage expansion unit, a digital quantity input expansion unit and / or a CAN-485 communication expansion unit.

10. A programmable controller with a detachable function expansion module according to claim 1, characterized in that: After the function expansion module (1) and the controller body (3) are engaged, the surfaces of the two are flush.

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