A PLC embedded in an HMI
By embedding a PLC within the HMI, the complex wiring and flexibility issues caused by separate HMI and PLC devices are resolved. This enables convenient PLC embedding and functional expansion, improving the application flexibility and economy in industrial settings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FEILING ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
The existing independent existence of HMI and PLC devices leads to complex wiring, high system redundancy, response delay, and is not conducive to the flexible selection of small and medium-sized industrial automation products.
Design an HMI embedded PLC structure. By combining the PLC controller, HMI display body and display back cover, and using multifunctional components such as expansion compartments, expansion cards and spring sheets, the PLC controller can be embedded. It does not limit the HMI display model, saves installation space and expands functions.
It enables convenient embedding of PLC controllers, improves application flexibility in industrial settings, saves installation space, expands functionality without changing the size of the PLC, and reduces costs.
Smart Images
Figure CN224553684U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of industrial automation technology and relates to a PLC embedded in an HMI. Background Technology
[0002] In the field of industrial automation, the collaborative application of Human-Machine Interfaces (HMIs) and Programmable Logic Controllers (PLCs) is the core of achieving efficient production. In traditional solutions, HMIs and PLCs are connected as independent devices via communication protocols. While this can meet basic requirements, it suffers from problems such as complex wiring, high system redundancy, and response delays.
[0003] In existing industrial automation applications, HMI (Human Machine Interface) and PLC (Programmable Logic Controller) are generally independent of each other. This type of application has the problem of large installation space occupation, which is not conducive to the application of small and medium-sized industrial automation products. Existing products also have HMI and PLC integrated machines, but they are limited to specific models of HMI and specific models of PLC, which is not conducive to the flexible selection needs of industrial applications.
[0004] Therefore, we propose a PLC embedded in HMI. Utility Model Content
[0005] The technical problem this invention aims to solve is that existing products also have HMI and PLC integrated machines, but they are limited to specific models of HMI and PLC, which is not conducive to the flexible selection needs in industrial applications.
[0006] The present invention describes an HMI embedded PLC, including a PLC controller, an HMI display body and a display back cover, wherein the PLC controller is located between the HMI display body and the display back cover, and a circuit board is provided inside the PLC controller.
[0007] A multi-functional component is located inside the PLC controller and assists the PLC controller and HMI display body in use.
[0008] Preferably, the multifunctional component includes an expansion compartment, an expansion port, an expansion card, and a spring sheet. The expansion compartment is fixedly connected to the inside of the PLC controller. One side of the expansion compartment passes through the PLC controller. An expansion card is provided on the inside of the expansion compartment. An expansion port is installed in the expansion compartment away from the expansion card. The expansion port matches the expansion card.
[0009] Preferably, the multifunctional component includes a spring sheet, an inner groove, a locking block, and a locking slot. The inner groove is symmetrically arranged on the side of the expansion compartment away from the expansion port. Spring sheets are fixedly connected to both end faces of the expansion card plate. Locking blocks are fixedly connected to the end faces of the spring sheets away from the expansion card plate. A locking slot is opened on the inner side of the expansion compartment away from the expansion port, and the locking slot matches the locking block.
[0010] Preferably, the multifunctional component further includes brackets, fixing holes, and indicator lights. The PLC controller is symmetrically fixedly connected to the brackets on its inner side. The circuit board is mounted on the two brackets. The top of the brackets has evenly distributed fixing holes. Several evenly distributed indicator lights are installed on the inner side of the PLC controller away from the expansion compartment. One end of each indicator light passes through the PLC controller.
[0011] Furthermore, the PLC controller has evenly distributed mounting screw holes fixedly connected to its inner side, and these mounting screw holes match the threaded holes on the back cover of the PLC controller and the display.
[0012] Furthermore, a connection opening is provided at the bottom of the PLC controller cavity away from the indicator light, and several reserved holes are provided on the side of the PLC controller away from the indicator light.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] By cooperating with the PLC controller, HMI display body, display back cover, mounting screw holes, and expansion cards, the PLC controller can be embedded into the HMI display body without limiting the model of the HMI display body in the application. It also eliminates the need to allocate separate installation space for the PLC controller, saving installation space for the PLC controller in industrial settings and greatly improving the application flexibility in industrial settings. It effectively solves the problem of being limited to specific models of HMI and PLC. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the PLC controller in this utility model;
[0017] Figure 3 This utility model Figure 2 A schematic diagram of the rear view structure;
[0018] Figure 4 This is a schematic diagram showing the location distribution of the expansion compartment in this utility model;
[0019] Figure 5 This is a schematic diagram showing the distribution of the inner groove positions in this utility model;
[0020] Figure 6 This is a schematic diagram of the structure of the expansion card plate in this utility model;
[0021] Figure 7 This is a schematic diagram of the structure of the display back cover in this utility model.
[0022] In the diagram: 1. PLC controller; 2. HMI display body; 3. Display back cover; 4. Circuit board; 5. Mounting screw holes; 6. Bracket; 7. Fixing holes; 8. Expansion compartment; 9. Expansion port; 10. Expansion card; 11. Spring sheet; 12. Inner groove; 13. Indicator light; 14. Card block; 15. Card slot; 16. Reserved hole; 17. Connection opening. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] like Figures 1 to 7 As shown, it includes a PLC controller 1, an HMI display body 2, and a display back cover 3. The PLC controller 1 is located between the HMI display body 2 and the display back cover 3. A circuit board 4 is provided inside the PLC controller 1. A multi-function component is located inside the PLC controller 1 and assists the PLC controller 1 and the HMI display body 2 in use.
[0027] The PLC controller 1, HMI display body 2, and circuit board 4 in this technical solution are all relatively mature equipment and accessories in the prior art. Their installation methods and usage methods are common knowledge among people in this field, so they will not be described in detail in this technical solution.
[0028] like Figures 1 to 7As shown, the multi-functional component includes an expansion compartment 8, an expansion port 9, an expansion card plate 10, and a spring plate 11. The expansion compartment 8 is fixedly connected to the inside of the PLC controller 1. One side of the expansion compartment 8 penetrates the PLC controller 1, and the expansion card plate 10 is installed inside it. An expansion port 9 is installed inside the expansion compartment 8, away from the expansion card plate 10. The expansion port 9 matches the expansion card plate 10. The multi-functional component includes a spring plate 11, an inner groove 12, a card block 14, and a card slot 15. The inner groove 12 is symmetrically arranged on the side of the expansion compartment 8 away from the expansion port 9. Both end faces of the expansion card plate 10 are fixedly connected to... A spring sheet 11 is fixedly connected to a locking block 14 at its end face away from the expansion plate 10. A slot 15 is provided inside the expansion compartment 8 away from the expansion port 9. The slot 15 matches the locking block 14. The multi-functional component also includes a bracket 6, fixing holes 7, and indicator lights 13. A bracket 6 is symmetrically fixedly connected inside the PLC controller 1. The circuit board 4 is mounted on the two brackets 6. The top of the bracket 6 has evenly distributed fixing holes 7. Several evenly distributed indicator lights 13 are installed inside the PLC controller 1 away from the expansion compartment 8. One end of the indicator light 13 passes through the PLC controller 1.
[0029] The expansion card 10 in this technical solution can expand other functions when needed. Mainly, it can facilitate the functional expansion of the PLC controller 1 during its use without changing the size of the PLC controller 1. For example, if there are not enough digital or analog input ports, not enough communication ports, or not enough temperature measurement functions, etc., the PLC controller 1 can be expanded without replacing it or increasing the cost. It is economical and convenient to use.
[0030] The circuit board 4 in this technical solution has mounting holes at all four corners. By passing self-tapping screws through the holes on the circuit board 4 and connecting them to the fixing holes 7, the circuit board 4 can be fixed. The indicator light 13 can be observed during use to determine if there is a fault. The indicator light 13 can easily show the working status of the PLC controller 1 and the I / O status of the PLC controller 1, which facilitates the debugging and maintenance of the PLC controller 1.
[0031] The PLC controller 1 has evenly distributed mounting screw holes 5 fixedly connected to its inner side. The mounting screw holes 5 match the screw holes on the PLC controller 1 and the back cover 3 of the display. The mounting screw holes 5 enable the PLC controller 1 to be matched and installed with the HMI display body 2 and the back cover 3 of the display by screws, thus achieving the function of fixed installation.
[0032] In addition, a connection opening 17 is provided at the bottom of the inner cavity of the PLC controller 1 away from the indicator light 13. Several reserved holes 16 are provided on the side of the PLC controller 1 away from the indicator light 13. The connection opening 17 allows the circuit board 4 or the internal wires of the PLC controller 1 to pass through, so that the PLC controller 1 is linearly connected to the HMI display body 2.
[0033] Working principle: This technical solution is mainly designed to solve the installation and application flexibility issues between the existing PLC controller 1 and HMI display body 2. It allows the PLC controller 1 to be easily embedded into the HMI display body 2, without limiting the model of the HMI display body 2 used in the application, and without requiring separate installation space to be allocated for the PLC controller 1. This saves installation space for the PLC controller 1 in the industrial field and greatly improves the application flexibility in the industrial field.
[0034] During installation, the HMI display body 2 and the display back cover 3 are first disassembled and separated. Then, the PLC controller 1 is placed between the HMI display body 2 and the display back cover 3, and screws are inserted into the mounting screw holes 5 to secure the PLC controller 1, the HMI display body 2 and the display back cover 3, so that they will not loosen during use. The connecting baseband on the circuit board 4 can be connected to the HMI display body 2 through the connecting opening 17.
[0035] The expansion card 10 can be separated from the PLC controller 1. When needed, two spring plates 11 can be pressed simultaneously to disengage the locking block 14 on the spring plates 11 from the slot 15, thus pulling out the expansion card 10. After being pulled out, the expansion card 10 is separated from the expansion port 9. If it is necessary to insert the expansion card 10 into the expansion compartment 8 and connect it to the expansion port 9, the two spring plates 11 still need to be pressed. After inserting the expansion card 10 into the expansion port 9, the spring plates 11 are released, and the elastic force of the spring plates 11 returns to the initial position, allowing the locking block 14 to enter the slot 15. This allows the expansion card 10 to be locked into the expansion compartment 8, improving the stability of the connection. The expansion card 10 in this technical solution can expand other functions when needed. Mainly, without changing the size of the PLC controller 1, it can facilitate the functional expansion during the use of the PLC controller 1. For example, if there are not enough digital or analog input ports, communication ports, or temperature measurement functions, etc., the PLC controller 1 does not need to be replaced, and the cost is not much. The functional expansion can be achieved without much cost, making it economical and convenient to use.
[0036] The above operation enables the PLC controller 1 to be embedded into the HMI display body 2. This unique structure has indicator lights 13, which facilitates the debugging and maintenance of the equipment. It can also expand the signal board to realize the expansion of the digital and analog functions of the PLC controller 1 without changing the size of the PLC controller 1.
[0037] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.
Claims
1. A PLC embedded in an HMI, comprising a PLC controller (1), an HMI display body (2), and a display back cover (3), characterized in that: The PLC controller (1) is located between the HMI display body (2) and the display back cover (3), and a circuit board (4) is provided inside the PLC controller (1). A multi-functional component is located inside the PLC controller (1) and assists the PLC controller (1) and the HMI display body (2) in use; The multifunctional component includes an expansion compartment (8), an expansion port (9), an expansion card plate (10), and a spring plate (11). The expansion compartment (8) is fixedly connected to the inside of the PLC controller (1). The expansion compartment (8) passes through the PLC controller (1) on one side. An expansion card plate (10) is provided on the inside of the expansion compartment (8). An expansion port (9) is installed in the expansion compartment (8) away from the expansion card plate (10). The expansion port (9) matches the expansion card plate (10). The multifunctional component includes a spring plate (11), an inner groove (12), a locking block (14), and a locking slot (15). The inner groove (12) is symmetrically arranged on the side of the expansion compartment (8) away from the expansion port (9). The spring plate (11) is fixedly connected to both end faces of the expansion plate (10). The locking block (14) is fixedly connected to the end face of the spring plate (11) away from the expansion plate (10). A locking slot (15) is opened on the inner side of the expansion compartment (8) away from the expansion port (9). The locking slot (15) matches the locking block (14).
2. The PLC embedded in an HMI according to claim 1, characterized in that: The multifunctional component also includes a bracket (6), a fixing hole (7) and an indicator light (13). The PLC controller (1) is symmetrically fixedly connected to the bracket (6). The circuit board (4) is mounted on the two brackets (6). The bracket (6) has evenly distributed fixing holes (7) on its top. Several evenly distributed indicator lights (13) are installed on the inside of the PLC controller (1) away from the expansion compartment (8). One end of the indicator light (13) passes through the PLC controller (1).
3. The PLC embedded in an HMI according to claim 1, characterized in that: The PLC controller (1) has evenly distributed mounting screw holes (5) fixedly connected to its inner side. The mounting screw holes (5) match the screw holes on the PLC controller (1) and the back cover (3) of the display.
4. The PLC embedded in an HMI according to claim 2, characterized in that: The PLC controller (1) has a connection opening (17) at the bottom of its inner cavity away from the indicator light (13), and several reserved holes (16) are provided on the side of the PLC controller (1) away from the indicator light (13).