Miniaturized controller mounting structure

Abstract

The utility model provides a miniaturized controller mounting structure, which comprises a PLC module mounting base, the upper end of the PLC module mounting base is provided with a plurality of groups of rectangular module sockets, and the upper ends of the plurality of groups of rectangular module sockets are respectively provided with a pluggable power supply module, a CPU module and other IO modules in a hot plugging manner. In the miniaturized controller mounting structure, operation is easy and convenient, scraping, abrasion and deformation of a module metal shell caused by mounting and dismounting are avoided, the service life of the shell is guaranteed, the structure of the embedded bolt positioning insertion grooves reduces the module mounting size while bolt mounting is not affected, PLC structure miniaturization is achieved, and the cost is reduced. The positioning slot adopts an asymmetric anti-misplug structure, the reverse connection of the PLC module is prevented while the module is positioned and installed, the module is installed more firmly by designing a convex protection structure at the edge of the module installation slot, and in addition, the module is installed by adopting a captive bolt, so that the situation that bolt parts are lost in the installation and disassembly processes is prevented.

Description

Technical Field

[0001] This utility model relates to the field of controller installation technology, and more specifically, to a miniaturized controller installation structure. Background Technology

[0002] A Programmable Logic Controller (PLC) is a digital electronic system designed for industrial applications and widely used in light industry, chemical industry, machinery, metallurgy, and other sectors. PLCs can be categorized into metal-cased PLCs and plastic-cased PLCs based on their housing material. Compared to plastic, metal housings offer superior mechanical strength and shock resistance, excellent heat and cold resistance, and good electromagnetic shielding, effectively isolating electromagnetic interference and protecting the internal electronic components. Therefore, plastic-cased PLCs are generally used in general industrial applications, while metal-cased PLCs are more suitable for specialized equipment applications with high reliability requirements, such as marine and aerospace applications. In these applications, the need for PLC miniaturization is even more urgent due to limited space. However, due to material differences, miniaturizing metal-cased PLCs is challenging. Therefore, research on the miniaturization design of metal-cased PLCs is of significant importance.

[0003] Compared to plastic housings, metal PLC housings offer superior mechanical strength and shock resistance, excellent heat and cold resistance, and superior electromagnetic shielding properties, effectively isolating electromagnetic interference and protecting the internal electronic components. This makes them more suitable for specialized equipment applications with high reliability requirements, such as marine and aerospace industries. In these applications, the limited space makes miniaturized PLC design even more crucial. However, due to material differences, achieving a miniaturized PLC structure with a metal housing is challenging.

[0004] Existing miniaturized controllers primarily use bolts for modular mounting. Symmetrical bolt holes are located on both sides of the controller module housing, with bolt slots embedded in the mounting base. During installation, positioning bolts are passed through the mounting holes on both sides of the module and tightened into the slots to achieve module positioning. This mounting method increases the required module size, hindering PLC miniaturization design. Furthermore, existing positioning slots pose a risk of reverse insertion, easily damaging module electrical components and interface pins. Additionally, existing module interface slots lack protection during insertion and removal, easily damaging module interface pins. Moreover, bolt mounting methods can easily result in the loss of bolt parts during disassembly. Therefore, we propose an improved, miniaturized controller mounting structure. Utility Model Content

[0005] The purpose of this invention is to address the design problems of current controller installation.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A miniaturized controller mounting structure is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A miniaturized controller mounting structure includes a PLC module mounting base. The upper end of the PLC module mounting base is provided with multiple sets of rectangular module sockets. The upper ends of the multiple sets of rectangular module sockets are respectively hot-swappable power supply modules, CPU modules, and other IO modules. The upper surface of the PLC module mounting base is also provided with a rectangular slot positioning chamber. The upper end of the rectangular slot positioning chamber is provided with a bolt slot positioning chamber. The lower end of the bolt slot positioning chamber is embedded with a bolt slot. The inner end of the bolt slot positioning chamber is provided with a bolt positioning hole. The inner end of the bolt positioning hole is provided with a non-removable bolt.

[0010] As a preferred technical solution of this application, the rectangular slot positioning chamber is fixed on the PLC module mounting base, the bolt slot positioning chamber is located on the lower side of both ends of the pluggable power module, CPU module and other IO modules, the bolt positioning holes are respectively fixed at both ends of the pluggable power module, CPU module and other IO modules, and the non-detachable bolts are threadedly connected to the rectangular slot positioning chamber through the bolt positioning holes.

[0011] As a preferred technical solution of this application, the non-detachable bolt includes a bolt cap and a screw. The upper end of the screw is provided with a lower arc-shaped tooth block, the lower end of the bolt cap is provided with a telescopic rod, the lower end of the telescopic rod is provided with an upper arc-shaped tooth block, the outer end of the bolt cap is provided with a positioning cap, the lower end of the positioning cap is provided with a positioning block, the outer end of the positioning block is provided with a positioning groove, the outer end of the positioning groove is provided with a linkage spring, and the outer end of the linkage spring is provided with a linkage ring.

[0012] As a preferred technical solution of this application, the bolt cap rotates within the positioning cap, the lower end of the positioning cap is fixedly connected to the positioning block, the positioning block slides within the positioning groove, and the positioning groove is embedded in the upper inner surface of the linkage ring.

[0013] As a preferred technical solution of this application, the two ends of the linkage spring are fixed to the positioning block and the positioning groove respectively, and the upper end of the screw is fixedly connected to the lower arc-shaped toothed block.

[0014] As a preferred technical solution of this application, one end of the telescopic rod is fixed to the upper end of the upper arc-shaped toothed block, and the other end of the telescopic rod is fixed to the lower outer surface of the bolt cap. The upper arc-shaped toothed block and the lower arc-shaped toothed block are meshed and connected, and the screw rotates along the inner positioning ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the scheme of this application:

[0017] 1. The plug-in and pull-out installation design avoids scratches, wear, and deformation of the module's metal casing during installation and disassembly;

[0018] 2. The embedded positioning bolt installation structure avoids the structure of external bolt positioning holes, which facilitates bolt installation, reduces the module installation volume, and realizes the miniaturization of the metal shell PLC structure.

[0019] 3. The anti-misconnection bolt slot structure prevents incorrect or reverse connection during module installation, protecting the internal electrical components and interface pins of the module;

[0020] 4. The protective structure of the module socket with raised edges makes the module socket installation more secure, avoiding damage such as bending or breaking of module pins due to loosening of the module during installation or disassembly;

[0021] 5. The PLC module is installed using non-removable bolts to prevent the loss of bolts during installation and disassembly.

[0022] 6. The bolt cap, which can extend and move outward, ensures stable thread installation when installing bolts that cannot be loosened, thus avoiding unstable movement of the bolt during installation and disassembly. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a miniaturized controller mounting structure provided in this application;

[0024] Figure 2 This application provides a miniaturized controller mounting structure. Figure 1 Schematic diagram of the enlarged structure of A;

[0025] Figure 3 An enlarged schematic diagram of the non-detachable bolt structure of a miniaturized controller mounting structure provided in this application;

[0026] Figure 4 An enlarged side view of the upper end of the non-detachable bolt of a miniaturized controller mounting structure provided in this application;

[0027] Figure 5 This application provides a miniaturized controller mounting structure. Figure 4 A magnified structural diagram of B in the diagram;

[0028] Figure 6 This application provides a miniaturized controller mounting structure. Figure 4 Front view;

[0029] Figure 7 This is a side sectional view of the positioning groove structure of a miniaturized controller mounting structure provided in this application.

[0030] The image shows:

[0031] 1. PLC module mounting base; 2. Pluggable power supply module; 3. CPU module; 4. Other IO modules; 5. Rectangular slot positioning chamber; 6. Bolt slot; 7. Bolt slot positioning chamber; 8. Bolt positioning hole; 9. Non-removable bolt; 91. Bolt cap; 92. Screw; 93. Positioning cap; 94. Positioning block; 95. Positioning groove; 96. Linkage spring; 97. Upper arc-shaped toothed block; 98. Lower arc-shaped toothed block; 99. Telescopic rod; 910. Linkage ring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0033] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] like Figure 1-2 As shown, this embodiment proposes a miniaturized controller mounting structure, including a PLC module mounting base 1. The upper end of the PLC module mounting base 1 is provided with multiple sets of rectangular module sockets. The upper ends of the multiple sets of rectangular module sockets are respectively hot-swappable power supply modules 2, CPU modules 3 and other IO modules 4. The upper surface of the PLC module mounting base 1 is also provided with a rectangular slot positioning chamber 5. The upper end of the rectangular slot positioning chamber 5 is provided with a bolt slot positioning chamber 7. The lower end of the bolt slot positioning chamber 7 is embedded with a bolt slot 6. The inner end of the bolt slot positioning chamber 7 is provided with a bolt positioning hole 8. The inner end of the bolt positioning hole 8 is provided with a non-removable bolt 9.

[0036] The rectangular slot positioning chamber 5 is fixed on the PLC module mounting base 1. The bolt slot positioning chamber 7 is located on the lower sides of both ends of the pluggable power module 2, CPU module 3 and other IO modules 4. The bolt positioning holes 8 are fixed on both ends of the pluggable power module 2, CPU module 3 and other IO modules 4 respectively. The non-detachable bolts 9 are threadedly connected to the rectangular slot positioning chamber 5 through the bolt positioning holes 8.

[0037] The installation structure is compact and can effectively save installation space. It can prevent PLC modules from being misinserted or reversed, protect the module interface pins, and effectively avoid wear on the metal casing and loss of bolts and other parts during the installation and disassembly of the PLC module.

[0038] During installation, the bolt slot 6 engages with the bolt slot positioning chamber 7, and installation is carried out using the non-detachable bolt 9. The non-detachable bolt 9 is fixed in the bolt positioning hole 8, which is embedded on both sides of the PLC module.

[0039] During module installation, the bolt slot 6 engages with the bolt slot positioning chamber 7, and the PLC module is positioned and installed on the mounting base by the non-detachable bolt 9; the direct insertion and removal installation design makes installation simple and avoids scratches, wear and deformation of the module's metal shell caused by installation and disassembly, thus ensuring the service life of the shell;

[0040] The bolt slot positioning chamber 7 adopts an embedded structure. During installation, the bolt slot 6 is embedded in the positioning chamber, and the module is positioned and installed by the non-detachable bolt 9. The structure is compact and saves installation space. The upper part of the bolt slot positioning chamber 7 adopts a sloping structure, which saves installation space without affecting the screwing in or out of the non-detachable bolt 9, making it easy to install and remove the module.

[0041] The bolt slot 6 adopts a two-in-one design of positioning structure and anti-misinsertion structure. The width difference between the two bolt slots 6 is 15%. The asymmetrical structure can effectively prevent the module from being misinserted and connected in reverse while realizing the module installation and positioning, thus protecting the internal electrical components of the module. The boss of the bolt slot 6 is higher than the base plate to avoid short circuits caused by contact between the bolt and the inside of the base, making the fixation more reliable. The height of the boss of the bolt slot 6 is slightly larger than the length of the module pin, ensuring that the interface and socket position are always aligned when the module is inserted or removed, avoiding bending or damage to the module pins during installation or disassembly. The edge of the module socket is raised, and the edge size of the socket is slightly larger than the interface size. During installation, the edge of the socket fits into the module interface, making the module installation more secure and avoiding damage such as bending or breaking of the module pins due to loosening of the module during installation or disassembly.

[0042] The diameter of the screw 92 part of the non-loosening bolt 9 is slightly smaller than the diameter of the anti-loosening thread, which can fit well with the bolt positioning hole 8, ensuring that there is a gap without damaging the thread, and making it easy to screw the bolt in while ensuring that the bolt will not fall off.

[0043] Operating principle: The PLC module is positioned on the mounting base by the bolt groove positioning chamber 7 and the bolt positioning slot. The PLC module is installed by tightening the locking bolt 9. When it is necessary to remove the module, unscrew the locking bolt 9 to pull out the PLC module, thus completing the disassembly.

[0044] like Figures 2-7 As shown, in a preferred embodiment, based on the above method, the non-detachable bolt 9 further includes a bolt cap 91 and a screw 92. The upper end of the screw 92 is provided with a lower arc-shaped tooth block 98. The lower end of the bolt cap 91 is provided with a telescopic rod 99. The lower end of the telescopic rod 99 is provided with an upper arc-shaped tooth block 97. The outer end of the bolt cap 91 is provided with a positioning cap 93. The lower end of the positioning cap 93 is provided with a positioning block 94. The outer end of the positioning block 94 is provided with a positioning groove 95. The outer end of the positioning groove 95 is provided with a linkage spring 96. The outer end of the linkage spring 96 is provided with a linkage ring 910.

[0045] Bolt cap 91 rotates within positioning cap 93, and the lower end of positioning cap 93 is fixedly connected to positioning block 94. Positioning block 94 slides within positioning groove 95, and positioning groove 95 is embedded in the upper inner surface of linkage ring 910.

[0046] The two ends of the linkage spring 96 are fixed to the positioning block 94 and the positioning groove 95 respectively, and the upper end of the screw 92 is fixedly connected to the lower arc-shaped toothed block 98.

[0047] One end of the telescopic rod 99 is fixed to the upper end of the upper arc-shaped toothed block 97, and the other end of the telescopic rod 99 is fixed to the lower outer surface of the bolt cap 91. The upper arc-shaped toothed block 97 and the lower arc-shaped toothed block 98 are meshed and connected. The screw 92 rotates and is positioned within the linkage ring 910.

[0048] When this application is used: During installation, the positioning cap 93 and the bolt cap 91 are extended outward. At this time, the positioning block 94 slides along the positioning groove 95, and the linkage spring 96 is stretched. At this time, the telescopic rod 99 located at the lower end of the bolt cap 91 extends and retracts, causing the upper arc-shaped tooth block 97 and the lower arc-shaped tooth block 98 to mesh with each other. Thus, the rotation of the bolt cap 91 drives the screw 92 to rotate, ensuring the installation stability of the screw 92. After the installation is completed, the upper bolt cap 91 springs back.

[0049] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A miniaturized controller mounting structure, comprising a PLC module mounting base (1), characterized in that, The upper end of the PLC module mounting base (1) is provided with multiple sets of rectangular module sockets. The upper ends of the multiple sets of rectangular module sockets are respectively hot-swappable power supply modules (2), CPU modules (3) and other IO modules (4). The upper surface of the PLC module mounting base (1) is also provided with a rectangular slot positioning chamber (5). The upper end of the rectangular slot positioning chamber (5) is provided with a bolt slot positioning chamber (7). The lower end of the bolt slot positioning chamber (7) is embedded with a bolt slot (6). The inner end of the bolt slot positioning chamber (7) is provided with a bolt positioning hole (8). The inner end of the bolt positioning hole (8) is provided with a non-detachable bolt (9).

2. The miniaturized controller mounting structure according to claim 1, characterized in that, The rectangular slot positioning chamber (5) is fixed on the PLC module mounting base (1). The bolt slot positioning chamber (7) is located on the lower side of both ends of the pluggable power module (2), CPU module (3) and other IO modules (4). The bolt positioning holes (8) are fixed on both ends of the pluggable power module (2), CPU module (3) and other IO modules (4). The non-detachable bolt (9) is threadedly connected to the rectangular slot positioning chamber (5) through the bolt positioning holes (8).

3. The miniaturized controller mounting structure according to claim 1, characterized in that, The non-detachable bolt (9) includes a bolt cap (91) and a screw (92). The upper end of the screw (92) is provided with a lower arc-shaped tooth block (98). The lower end of the bolt cap (91) is provided with a telescopic rod (99). The lower end of the telescopic rod (99) is provided with an upper arc-shaped tooth block (97). The outer end of the bolt cap (91) is provided with a positioning cap (93). The lower end of the positioning cap (93) is provided with a positioning block (94). The outer end of the positioning block (94) is provided with a positioning groove (95). The outer end of the positioning groove (95) is provided with a linkage spring (96). The outer end of the linkage spring (96) is provided with a linkage ring (910).

4. The miniaturized controller mounting structure according to claim 3, characterized in that, The bolt cap (91) rotates within the positioning cap (93), the lower end of the positioning cap (93) is fixedly connected to the positioning block (94), the positioning block (94) slides within the positioning groove (95), and the positioning groove (95) is embedded in the upper inner surface of the linkage ring (910).

5. The miniaturized controller mounting structure according to claim 3, characterized in that, The two ends of the linkage spring (96) are fixed to the positioning block (94) and the positioning groove (95) respectively, and the upper end of the screw (92) is fixedly connected to the lower arc-shaped toothed block (98).

6. The miniaturized controller mounting structure according to claim 3, characterized in that, One end of the telescopic rod (99) is fixed to the upper end of the upper arc-shaped toothed block (97), and the other end of the telescopic rod (99) is fixed to the lower outer surface of the bolt cap (91). The upper arc-shaped toothed block (97) and the lower arc-shaped toothed block (98) are meshed and connected. The screw (92) rotates and is positioned within the linkage ring (910).

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