Programmable controller device

Abstract

The utility model relates to a programmable controller device, which comprises at least one programmable controller module, and each programmable controller module comprises a first shell, a second shell, a pull rod, a backboard bus connector, a PCB (printed circuit board) and a wiring terminal, the first shell and the second shell are connected through a buckle to form a cavity used for installing the pull rod and the PCB, the backboard bus connector is welded to the PCB, and the wiring terminal is installed on a clamping structure formed between the first shell and the second shell and connected with the PCB. The first shell is provided with a sliding rail groove, the second shell is provided with a sliding rail boss, the sliding rail boss slides into the sliding rail groove of the adjacent programmable controller module, and installation between the adjacent programmable controller modules is achieved. Compared with the prior art, the utility model has the advantages that the modules are convenient to assemble and disassemble, and the like.

Description

Technical Field

[0001] The utility model relates to a programmable logic controller, in particular to a programmable logic controller device. Background Art

[0002] A programmable logic controller is a digital operation controller with a microprocessor for automatic control, which can load control instructions into the memory at any time for storage and execution. It uses a programmable memory to execute stored logic operations and sequential control, timing, counting, and arithmetic operation instructions, and controls various types of mechanical equipment and production processes through digital or analog input and output interfaces.

[0003] The prior art has the following defects:

[0004] 1) Most traditional programmable logic controllers directly install various functional components in the same housing and sell them as a whole. If a fault occurs during use or new functional requirements are added, it is extremely inconvenient for maintenance, disassembly, and replacement.

[0005] 2) During use, multiple programmable logic controller modules are usually connected. The connection is unstable and it is easy to cause poor contact due to external influences.

[0006] 3) Programmable logic controllers on the market usually adopt the method of grounding through a power connector. When there are many controller modules installed, the grounding path of the controller module far from the power connector is long and the grounding effect is not good.

[0007] 4) Most of the wiring terminals of the programmable logic controller module adopt the connection method of external screw tightening, which occupies too much space on the main board PCB and has low installation and disassembly efficiency. Summary of the Utility Model

[0008] The purpose of the utility model is to provide a programmable logic controller device to overcome the above-mentioned defects existing in the prior art.

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

[0010] According to one aspect of the utility model, a programmable logic controller device is provided, which includes at least one programmable logic controller module, and each programmable logic controller module includes a first housing, a second housing, a pull rod, a backplane bus connector, a PCB board, and a wiring terminal;

[0011] The first housing and the second housing are connected by a buckle to form a cavity for installing the pull rod and the PCB board. The backplane bus connector is welded on the PCB board, and the wiring terminal is installed on the engaging structure formed between the first housing and the second housing and is connected to the PCB board;

[0012] The first housing is provided with a slide rail groove, and the second housing is provided with a slide rail boss. The slide rail boss slides into the slide rail groove of an adjacent programmable logic controller module to achieve the installation between adjacent programmable logic controller modules.

[0013] As a preferred technical solution, there are two slide rail grooves, which are respectively arranged on the upper and lower sides of the first housing.

[0014] As a preferred technical solution, damping bosses are arranged in the slide rail grooves.

[0015] As a preferred technical solution, there are two slide rail bosses, which are respectively arranged on the upper and lower sides of the second housing.

[0016] As a preferred technical solution, the programmable logic controller module is installed on an installation guide rail.

[0017] As a preferred technical solution, mounting bosses for fixing the programmable logic controller module on the installation guide rail are arranged on the pull rod.

[0018] As a preferred technical solution, the programmable logic controller module further includes a grounding plate. One end of the grounding plate is welded to the PCB board, and the other end extends out of the programmable logic controller module and contacts the installation guide rail.

[0019] As a preferred technical solution, the engaging structure formed between the first housing and the second housing includes positioning posts and snap-in mounting grooves.

[0020] As a preferred technical solution, positioning grooves corresponding to the positioning posts and snaps corresponding to the snap-in mounting grooves are arranged on the terminal block.

[0021] As a preferred technical solution, the programmable logic controller module is provided with a program burning interface.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] 1) The programmable logic controller module of the utility model adopts the installation method of sliding in through the upper and lower guide rails, which is convenient for the assembly and disassembly between modules and provides a more flexible combination scheme for the whole controller;

[0024] 2) Damping bosses are arranged on both the upper and lower guide rails of the programmable logic controller module of the utility model, making the connection between modules more stable, avoiding poor connection caused by external influences, and having stronger anti-interference ability;

[0025] 3) Each programmable logic controller module of the utility model is provided with a metal grounding plate to eliminate static electricity for the PCB control board in the module, avoid signal interference or loss caused by static electricity, and make signal transmission more stable;

[0026] 4) The terminal of the programmable logic controller module of the present utility model adopts a snap-on installation connection method, replacing the common screw-tightening method; this greatly facilitates the wiring, installation, disassembly of the terminals, and improves the production and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic exploded view of the present utility model;

[0028] Figure 2 is an assembly schematic diagram of the terminal and the housing of the present utility model Figure 1 ;

[0029] Figure 3 is an assembly schematic diagram of the terminal and the housing of the present utility model Figure 2 ;

[0030] Figure 4 is a three-dimensional structure schematic diagram of the first housing of the present utility model;

[0031] Figure 5 is a front view structure schematic diagram of the first housing of the present utility model;

[0032] Figure 6 is an assembly schematic diagram of the slide rail groove and the slide rail boss of the present utility model;

[0033] Figure 7 is a structure schematic diagram of the grounding plate of the present utility model;

[0034] Figure 8 is a structure schematic diagram after the assembly of the present utility model.

[0035] Wherein 1 is the first housing, 2 is the pull rod, 3 is the backplane bus connector, 4 is the grounding plate, 5 is the PCB board, 6 is the second housing, 7 is the terminal, 8 is the mounting rail, 9 is the positioning post, 10 is the snap-in mounting groove, 11 is the program burning interface, 12 is the damping boss, 13 is the slide rail groove, 14 is the slide rail boss, 21 is the mounting boss, 71 is the positioning groove, and 72 is the snap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] The utility model provides a programmable controller device, which includes at least one programmable controller module, comprising left and right shells, a pull rod, a PCB board and a terminal block. A backplane bus connector and a grounding plate are soldered on the PCB board. The backplane bus connector provides signal communication between programmable controller modules, and the grounding plate provides grounding protection for the programmable controller modules. The PCB board and the pull rod are installed in the cavity formed by the left and right shells. The terminal block provides connection for external wiring and the PCB board inside the controller module. The snap-in installation method greatly facilitates the wiring, installation, disassembly and removal of the terminals, and improves the production and maintenance efficiency.

[0038] As Figure 1 shown, the programmable controller module includes a first shell 1, a second shell 6, a pull rod 2, a PCB board 5 and a terminal block 7. The first shell 1 and the second shell 6 are assembled together by a snap-in method to form a cavity, and the pull rod 2 and the PCB board 5 are installed in the cavity. The backplane bus connector 3 is soldered on the PCB board 5 to provide signal communication for each controller module.

[0039] As Figure 6 shown, there is a slide rail groove 13 at the top and bottom of the first shell 1, and a slide rail boss 14 at the top and bottom of the second shell 6. When more than two programmable controller modules are installed together, the slide rail boss 14 of the left programmable controller module slides into the slide rail groove 13 of the right programmable controller module to realize the installation between programmable controller modules. The modular programmable controller and the slide rail installation method facilitate the frequent disassembly and assembly of the controller modules at the customer site, and provide a more flexible combination scheme for the entire controller.

[0040] As Figure 4 and Figure 5 shown, damping bosses 12 are provided in the slide rail grooves 13 at the top and bottom of the first shell 1, making the connection between programmable controller modules more firm and the signal transmission between controller modules more stable.

[0041] As Figure 3 shown, there are 2 mounting bosses 21 on the pull rod 2, forming a mounting groove with the outer shell of the controller module, which can fix the controller module on the mounting rail 8, and at the same time enable the entire module to slide left and right on the mounting rail 8. When the customer has a need to increase or decrease the controller modules at the site, it facilitates the on-site operation and replacement by the workers.

[0042] As Figure 7 shown, the pins of the grounding plate 4 are soldered on the PCB board 5, and the other end extends out of the entire programmable controller module and contacts the mounting rail 8. It provides grounding protection for the entire controller module, avoids signal interference or loss caused by static electricity, and makes the signal transmission more stable.

[0043] AsFigure 2 As shown, a positioning post 9 and a snap-in mounting groove 10 are formed between the first housing 1 and the second housing 6 for installing and fixing the wiring terminal 7. The wiring terminal 7 is provided with a positioning groove 71 and a snap 72. When installing the wiring terminal 7, first snap the positioning groove 71 onto the positioning post 9, and then rotate the wiring terminal 7 to fix it in the snap-in mounting groove 10 through the snap 72, thus realizing the installation of the wiring terminal 7. Through the snap-in installation method, the wiring, installation, disassembly of the wiring terminal 7 are facilitated, and the production and maintenance efficiency are improved.

[0044] As Figure 2 shown, a program burning interface 11 is provided under the programmable controller module, providing a way for each controller module to perform program upgrade through a connector. Usually, the program burning interface 11 is sealed. When it is necessary to perform program upgrade for the controller module, the burning interface is opened, and then the program upgrade is carried out through the connector.

[0045] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A programmable controller device, characterized in that: It comprises at least one programmable controller module, each of which comprises a first housing (1), a second housing (6), a pull rod (2), a backplane bus connector (3), a PCB board (5) and a connection terminal (7); The first shell (1) and the second shell (6) are connected by snap fastening to form a cavity for installing the pull rod (2) and the PCB board (5); the backplane bus connector (3) is welded on the PCB board (5); and the connection terminal (7) is installed on the snap-fit ​​structure formed between the first shell (1) and the second shell (6) and connected to the PCB board (5); The first housing (1) is provided with a slide rail groove (13), and the second housing (6) is provided with a slide rail boss (14); the slide rail boss (14) slides into the slide rail groove (13) of an adjacent programmable controller module to achieve installation between adjacent programmable controller modules.

2. A programmable controller device according to claim 1, characterized in that: The slide rail grooves (13) are provided with two, which are respectively arranged on the upper and lower sides of the first housing (1).

3. A programmable controller device according to claim 1 or 2, characterized in that: A damping boss (12) is provided in the slide rail groove (13).

4. A programmable controller device according to claim 1, characterized in that: The slide rail bosses (14) are provided with two, which are respectively arranged on the upper and lower sides of the second housing (6).

5. A programmable controller device according to claim 1, characterized in that: The programmable controller module is mounted on a mounting rail (8).

6. A programmable controller device according to claim 5, characterized in that: The pull rod (2) is provided with a mounting boss (21) for fixing the programmable controller module on the mounting guide rail (8).

7. A programmable controller device according to claim 1, characterized in that: The programmable controller module also includes a grounding plate (4), one end of which is welded on the PCB board (5), and the other end of which extends out of the programmable controller module and contacts the mounting guide rail (8).

8. A programmable controller device according to claim 1, characterized in that: The snap-fit ​​structure formed between the first shell (1) and the second shell (6) comprises a positioning column (9) and a snap-fit ​​installation groove (10).

9. A programmable controller device according to claim 8, characterized in that: The wiring terminal (7) is provided with a positioning groove (71) corresponding to the positioning column (9) and a buckle (72) corresponding to the buckle installation groove (10).

10. A programmable controller device according to claim 1, characterized in that: The programmable controller module is provided with a program burning interface (11).

Images