A combined small PLC connecting structure

Abstract

The utility model provides a kind of for combined small PLC connecting structure belongs to small PLC combination connection technical field, including main control module and IO module;Positioning docking assembly and docking anti-disengagement assembly are equipped on the main control module and IO module;Wherein, the positioning docking assembly includes: the outer transverse groove and outer access slot being opened on the outer wall of one side of the main control module and IO module, and the outer transverse groove is located in the side of outer access slot;The inner movable slot being opened in the inside of the main control module and IO module and being close to the position of the side of outer transverse groove and outer access slot;Transverse piece is equipped on the outer wall of the other side of the IO module;The utility model can realize the convenient combination between main control module and IO module and between adjacent IO module by the mutual cooperation of positioning docking assembly and docking anti-disengagement assembly, and combination operation is convenient, without using bolt and corresponding workpiece, easy to disassemble and assemble, and, after combination, small PLC is not only compact structure, but also can be flexibly combined.

Description

Technical Field

[0001] This utility model belongs to the field of small PLC combination connection technology, specifically relating to a connection structure for combined small PLCs. Background Technology

[0002] Small PLCs are compact control devices widely used in the field of industrial automation. They are characterized by small size, low cost, and high functional integration, and are suitable for the automation control of small and medium-sized equipment.

[0003] Some existing small PLCs adopt a modular approach, allowing the main control module and several IO modules to be flexibly combined. This is suitable for controlling independent devices and can also be combined into a small control network via Ethernet. However, the existing main control module and IO modules are mostly connected one by one with bolts when combined. The connection operation is cumbersome and not easy to disassemble and assemble. Moreover, the wiring space between adjacent IO modules after combination is small, making wiring difficult.

[0004] Therefore, a connection structure for modular small PLCs is proposed. Summary of the Invention

[0005] This utility model provides a connection structure for a modular small PLC, the purpose of which is to solve the problems mentioned above.

[0006] This utility model embodiment provides a connection structure for a modular small PLC, including a main control module and an I / O module; a positioning docking component and a docking anti-detachment component disposed on the main control module and the I / O module; wherein, the positioning docking component includes: an outer horizontal groove and an outer inlet / outlet groove formed on one side of the outer wall of the main control module and the I / O module, the outer horizontal groove being located on one side of the outer inlet / outlet groove; an inner movable groove formed inside the main control module and the I / O module near the outer horizontal groove and the outer inlet / outlet groove; a horizontal block disposed on the other side of the outer wall of the I / O module; and a movable block disposed on one side of the horizontal block; wherein, the docking anti-detachment component includes: a slot formed on one side of the top of the I / O module; a limiting groove formed on the other side of the top of the main control module and the I / O module; a locking block sliding inside the limiting groove; a spring disposed between the locking block and the limiting groove; and a circular hole formed on the top of the locking block.

[0007] Furthermore, a wiring board is provided on one side of the IO module, and a convenient wiring assembly is provided on the IO module and the wiring board. The convenient wiring assembly includes a wire harness cavity, a slide groove, and a slot 1 opened on the outer wall of one side of the IO module. The slide groove is located outside the wire harness cavity and the slot 1, and the wire harness cavity is located above the slot 1.

[0008] Furthermore, the convenient wiring assembly also includes an L-shaped plate on the top of the wiring board. A groove is provided on one outer wall of the wiring board, and a slot two is provided at the center of the inner side wall of the groove. A spring two is provided on the inner side wall of the groove near the outer side of the slot two. A movable plate is provided at one end of the spring two. A plug plate is provided on one outer wall of the movable plate, and a handle is provided on the other outer wall of the movable plate.

[0009] Furthermore, the inner movable groove, the outer transverse groove, and the outer inlet / outlet groove are interconnected, the inner sidewall of the inner movable groove is in contact with the outer sidewall of the movable block, and the transverse block can move within the outer transverse groove.

[0010] By adopting the above technical solution, a channel with constraint capability is formed through the interconnected structure, thereby limiting the embedded active block, realizing the limitation of the active block in the vertical direction and the horizontal direction, and realizing the initial limiting docking between the main control module and the IO module and between adjacent IO modules.

[0011] Furthermore, the card block has a T-shaped cross-section, and one end of the card block protrudes from the outer wall of the main control module and the IO module.

[0012] By adopting the above technical solution, when the T-shaped locking block is engaged with the slot, the locking block will not be dislodged from the slot by the push of the spring, ensuring that the locking block moves within the limited space.

[0013] Furthermore, the groove and the slider are slidably connected;

[0014] By adopting the above technical solution, the terminal block can be raised and lowered on the IO module through a sliding connection.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model enables convenient combination between the main control module and the IO module, as well as between adjacent IO modules, through the cooperation of the positioning docking component and the docking anti-disengagement component. The combination operation is convenient, without the need for bolts or corresponding workpieces, and is easy to disassemble and assemble. Moreover, the combined small PLC is not only compact in structure, but also flexible in combination.

[0017] 2. After the wiring board moves upward, it is vertically misaligned with the space between it and the adjacent IO module, which provides a large wiring space and facilitates wiring operations.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the main control module structure according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram showing the interaction between the IO module and the junction box in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the IO module structure according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the terminal block structure according to an embodiment of the present utility model;

[0025] Figure 6 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of point A in the diagram;

[0026] Reference numerals in the attached diagram: 1. Main control module; 2. IO module; 3. Positioning and docking component; 31. Inner movable groove; 32. Outer horizontal groove; 33. Outer inlet / outlet groove; 34. Horizontal block; 35. Movable block; 4. Docking anti-detachment component; 41. Slot; 42. Limiting groove; 43. Slot; 44. Spring 1; 45. Round hole; 5. Wiring board; 6. Convenient wiring component; 61. Wire harness cavity; 62. Slide groove; 63. Slot 1; 64. Slider; 65. L-shaped plate; 66. Groove; 661. Spring 2; 662. Slot 2; 67. Moving plate; 68. Insert plate; 69. Handle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages 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. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] Reference Figure 1-3 and Figure 6 This utility model embodiment proposes a connection structure for a modular small PLC, including a main control module 1 and an I / O module 2. The I / O module 2 includes five categories: digital input, digital output, analog input, analog output, and communication. Both the main control module 1 and the I / O module 2 have an outer transverse groove 32 and an outer inlet / outlet groove 33 formed in the positioning and docking assembly 3 on one side of their outer walls. The outer transverse groove 32 is located on one side of the outer inlet / outlet groove 33. An inner movable groove 31 is formed inside the main control module 1 and the I / O module 2 near the outer transverse groove 32 and the outer inlet / outlet groove 33. The other outer wall of the I / O module 2... A horizontal block 34 is provided, and a movable block 35 is provided on the side of the horizontal block 34 away from the IO module 2. The inner movable groove 31, the outer horizontal groove 32 and the outer inlet / outlet groove 33 are interconnected. The inner sidewall of the inner movable groove 31 fits against the outer sidewall of the movable block 35. The horizontal block 34 can move in the outer horizontal groove 32. The interconnected structure forms a channel with constraint capabilities, thereby limiting the embedded movable block 35 and realizing the limitation of the movable block 35 in the vertical direction and the horizontal side direction, realizing the initial limiting docking between the main control module 1 and the IO module 2 and between adjacent IO modules 2.

[0030] Specifically, when assembling the small PLC, the IO module 2 is installed on one side wall of the main control module 1. The IO module 2 is picked up and moved horizontally towards the main control module 1. The horizontal block 34 and the movable block 35 on the IO module 2 are inserted into the outer inlet / outlet slot 33 and the inner movable slot 31 on the outer side wall of the main control module 1. At this time, the movable block 35 is located inside the inner movable slot 31. Then, the IO module 2 is pushed horizontally and vertically, and the movable block 35 on the IO module 2 moves synchronously. The movable block 35 moves along the inside of the inner movable slot 31 until the movable block 35 contacts the innermost end of the inner movable slot 31, completing the initial positioning and docking when assembling the main control module 1 and the IO module 2.

[0031] The top of the IO module 2 is provided with a slot 41 in the anti-detachment component 4 on one side, and the top of the main control module 1 and the IO module 2 are provided with a limit groove 42 on the other side. The limit groove 42 is slidably connected with a block 43. The cross-section of the block 43 is T-shaped, and one end of the block 43 protrudes from the outer wall of the main control module 1 and the IO module 2. When the T-shaped block 43 is engaged with the slot 41, the block 43 will not be disengaged from the slot 41 by the push of the spring 44, ensuring that the block 43 moves within the limited space. A spring 44 is provided between one outer wall of the block 43 and one inner wall of the limit groove 42, and a round hole 45 is provided on the top of the block 43.

[0032] Specifically, when IO module 2 moves horizontally toward main control module 1, IO module 2 first contacts the locking block 43. The locking block 43 is forced to move into the limiting groove 42, and spring 44 is compressed. After the main control module 1 and IO module 2 complete the above-mentioned initial positioning and docking, the locking groove 41 on the top of the main control module 1 coincides with the locking groove 41 on the top of the IO module 2. The locking block 43 is inserted into the locking groove 41 under the action of the spring 44, and a horizontal limit is formed between the locking block 43 and the locking groove 41, thereby forming a horizontal limit between the main control module 1 and IO module 2. IO module 2 cannot detach from the main control module 1, thus completing the combination of main control module 1 and IO module 2. When installing another IO module 2, the above method is used to combine and install the other IO module 2 on the IO module 2 that is in a fixed state, thereby realizing a small PLC combination.

[0033] Example 2

[0034] Reference Figure 3-5 This utility model embodiment also proposes a connection structure for a modular small PLC, including an IO module 2. A terminal block 5 is provided on one side of the IO module 2, and a convenient wiring assembly 6 is provided on the IO module 2 and the terminal block 5. The convenient wiring assembly 6 includes a wire harness cavity 61, a sliding groove 62, and a slot 63 formed on the outer wall of one side of the IO module 2. The sliding groove 62 is located outside the wire harness cavity 61 and the slot 63, and the wire harness cavity 61 is located above the slot 63. The convenient wiring assembly 6 also includes an L-shaped plate 65 provided on the top of the terminal block 5. A slider 64 is provided on one side of the outer wall of the terminal block 5. The slider 64 and the slide groove 62 are slidably connected. The sliding connection allows the terminal block 5 to slide up and down on the IO module 2. A groove 66 is provided on the other side of the outer wall of the terminal block 5. A slot 662 is provided at the center of the inner side wall of the groove 66. A spring 661 is provided on the inner side wall of the groove 66 near the outer side of the slot 662. A movable plate 67 is provided at one end of the spring 661. A plug plate 68 is provided on one side of the outer wall of the movable plate 67. A handle 69 is provided on the other side of the outer wall of the movable plate 67.

[0035] Specifically, when wiring the IO module 2, first pinch the handle 69 and then pull the moving plate 67 outward. The spring 661 between the moving plate 67 and the groove 66 is stretched, and the insert plate 68 on the moving plate 67 is pulled out of the slot 63 on the IO module 2. At this time, the wiring plate 5 is in a height-adjustable sliding state. Pushing the wiring plate 5 upward, under the sliding connection of the slider 64 and the groove 62, a part of the IO module 2 protrudes out of the IO module 2. When the insert plate 68 moves to the horizontal side of the wire harness cavity 61, the spring 661... Under the action of the reset pull, the plug plate 68 is inserted into the inside of the wire harness cavity 61. At this time, the plug plate 68 plays a supporting role, so that the terminal block 5 will not move downward freely, which facilitates subsequent wiring operations. At this time, the space between the wiring part of the terminal block 5 and the adjacent IO module 2 is vertically misaligned, with a large wiring space, which facilitates wiring operations. In addition, the wire harness cavity 61 can provide a space to accommodate the wire harness between the main control module 1 and the terminal block 5, and can reserve a little more length for the wire harness, so that the terminal block 5 can be raised and lowered.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection structure for a modular small PLC, characterized in that: It includes a main control module (1) and an I / O module (2); Positioning docking component (3) and docking anti-detachment component (4) are installed on the main control module (1) and IO module (2); The positioning and docking component (3) includes: An outer transverse groove (32) and an outer inlet / outlet groove (33) are formed on the outer wall of one side of the main control module (1) and the IO module (2), wherein the outer transverse groove (32) is located on one side of the outer inlet / outlet groove (33); An inner movable groove (31) is opened inside the main control module (1) and the IO module (2) near the outer transverse groove (32) and the outer inlet / outlet groove (33); A horizontal block (34) is provided on the outer wall of the other side of the IO module (2); A movable block (35) is provided at one end of the horizontal block (34); The docking anti-detachment component (4) includes: A slot (41) is provided on one side of the top of the IO module (2); A limiting groove (42) is provided on the top of the main control module (1) and the IO module (2) on the other side; The locking block (43) slides inside the limiting groove (42); A spring (44) is provided between the locking block (43) and the limiting groove (42); and A circular hole (45) is formed on the top of the card block (43).

2. The connection structure for a combined small PLC according to claim 1, characterized in that: A wiring board (5) is provided on one side of the IO module (2), and a convenient wiring assembly (6) is provided on the IO module (2) and the wiring board (5). The convenient wiring assembly (6) includes a wire harness cavity (61), a slide groove (62) and a slot one (63) opened on the outer wall of one side of the IO module (2). The slide groove (62) is located outside the wire harness cavity (61) and the slot one (63), and the wire harness cavity (61) is located above the slot one (63).

3. The connection structure for a combined small PLC according to claim 2, characterized in that: The convenient wiring assembly (6) also includes an L-shaped plate (65) on the top of the wiring plate (5). A groove (66) is provided on one side of the outer wall of the wiring plate (5). A slot two (662) is provided at the center of the inner side wall of the groove (66). A spring two (661) is provided on the inner side wall of the groove (66) near the outer side of the slot two (662). A movable plate (67) is provided at one end of the spring two (661). A plug plate (68) is provided on one side of the outer wall of the movable plate (67). A handle (69) is provided on the other side of the outer wall of the movable plate (67).

4. The connection structure for a combined small PLC according to claim 1, characterized in that: The inner movable groove (31), the outer transverse groove (32) and the outer inlet / outlet groove (33) are interconnected. The inner sidewall of the inner movable groove (31) is in contact with the outer sidewall of the movable block (35). The transverse block (34) can move within the outer transverse groove (32).

5. A connection structure for a modular small PLC according to claim 1, characterized in that: The card block (43) has a T-shaped cross-section, and one end of the card block (43) protrudes from the outer wall of the main control module (1) and the IO module (2).

6. A connection structure for a combined small PLC according to claim 3, characterized in that: The groove (62) and the slider (64) are slidably connected.

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