Expansion card and programmable logic controller

Abstract

The utility model discloses an expansion card and a programmable logic controller, and relates to the technical field of PLC equipment, the expansion card comprises a box cover and an expansion plate, the side wall of the box cover is provided with a positioning column extending along a first direction and a limiting groove extending along a second direction, and an included angle is formed between the first direction and the second direction; a convex part and a positioning hole are formed in the expansion plate, the convex part is clamped with the groove wall of the limiting groove, and the positioning column is inserted into the positioning hole. According to the technical scheme, the positioning columns are matched with the positioning holes in an inserted mode, the protruding portions are matched with the limiting grooves in a clamped mode, firmness of connection between the expansion plate and the box cover can be guaranteed, a user only needs to insert the positioning columns into the positioning holes, then the protruding portions are clamped into the limiting grooves, connection between the expansion plate and the box cover can be completed, the installation process is simplified, and the installation efficiency is improved. And professional technicians do not need to carry out complex operation, so that the installation difficulty and the installation cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of PLC equipment, especially relates to an expansion card and programmable logic controller. BACKGROUND

[0002] With the rapid development of industrial automation technology, as the core component of industrial automation control system, the expansion of PLC function and the improvement of performance are crucial to meet the diversified and complex industrial control requirements. In the industrial automation control system, PLC (programmable logic controller) as the core control equipment, its expansion function is crucial to meet the complex industrial control requirements.

[0003] However, the existing PLC expansion card has many problems in the process of installation and use, especially in the installation convenience. The installation of the traditional PLC expansion card usually needs professional technicians to perform complex operations, including accurate alignment, fastening and electrical connection steps, which is easy to cause problems such as poor contact, short circuit or damage to the equipment due to human error. SUMMARY

[0004] The main purpose of the utility model is to provide an expansion card and programmable logic controller, which aims to improve the installation efficiency of the expansion card in the programmable logic controller.

[0005] To achieve the above purpose, the utility model provides an expansion card applied to a programmable logic controller, which comprises:

[0006] A box cover, the side wall of the box cover is formed with a positioning column extending in a first direction and a limiting groove extending in a second direction, the first direction and the second direction form an included angle; and

[0007] An expansion board, the expansion board is formed with a convex part and a positioning hole, the convex part is connected with the groove wall of the limiting groove, and the positioning column is inserted into the positioning hole.

[0008] In an embodiment, the included angle between the first direction and the second direction is 90°.

[0009] In an embodiment, the expansion board is formed with two positioning holes, the two positioning holes are distributed opposite to each other along the first direction, and the two side walls of the box cover are both formed with the positioning column, and each positioning column is arranged in correspondence with a positioning hole.

[0010] In an embodiment, the expansion board is formed with the convex part on opposite sides along the first direction, the two side walls of the box cover are both formed with the limiting groove, and each convex part abuts against the groove wall of the limiting groove.

[0011] In an embodiment, the expansion card further comprises a connector male seat arranged on a side of the expansion board opposite to the box cover and used for electrically connecting with the host of the programmable logic controller.

[0012] The utility model discloses further a kind of programmable logic controller, including host and above any kind of expansion card, the expansion board is electrically connected with the host.

[0013] In an embodiment, the host comprises a shell and a mainboard, the shell is formed with a mounting cavity; the mainboard is arranged in the shell and located in the mounting cavity, and the expansion board is electrically connected with the mainboard.

[0014] In an embodiment, the shell is formed with a mounting groove, and the groove wall of the mounting groove is slidably connected with the box cover.

[0015] In an embodiment, the groove wall of the mounting groove is formed with guide rails on both sides, and the box cover is formed with guide grooves on both sides, and each guide rail is slidably connected with the groove wall of the guide groove.

[0016] In an embodiment, the side wall of the box cover is further formed with a first buckle, the groove wall of the mounting groove is further formed with a second buckle, and the first buckle is connected with the second buckle.

[0017] In the technical scheme of the utility model, the expansion card comprises a box cover and an expansion board, the side wall of the box cover is formed with a positioning column extending along a first direction and a limiting groove extending along a second direction, the first direction and the second direction form an included angle; the expansion board is formed with a convex part and a positioning hole, the convex part is clamped with the groove wall of the limiting groove, and the positioning column is inserted into the positioning hole. In the technical scheme of the utility model, the user inserts the positioning column on the box cover into the positioning hole of the expansion board, and when the convex part on the expansion board reaches the position of the limiting groove on the box cover after insertion, the convex part is clamped into the limiting groove to complete the connection between the expansion board and the box cover. The insertion and clamping cooperation of the positioning column and the positioning hole and the convex part and the limiting groove can ensure the firmness of the connection between the expansion board and the box cover, and the user only needs to insert the positioning column into the positioning hole and clamp the convex part into the limiting groove to complete the connection between the expansion board and the box cover, which simplifies the installation process, eliminates the need for professional technicians to perform complex operations, and reduces the installation difficulty and cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating labor.

[0019] Figure 1 Structure schematic view of one embodiment of the expansion card provided by the utility model;

[0020] Figure 2 Structure schematic view of the box cover in the expansion card;

[0021] Figure 3 Structure schematic view of the expansion board in the expansion card;

[0022] Figure 4 Exploded view of the programmable logic control provided by the utility model;

[0023] Figure 5 Structure schematic view of the host computer in the programmable logic control.

[0024] Explanation of reference signs:

[0025] Reference Name Reference Name 1000 Expansion card 3 Connector male seat 1 Box cover 2000 Programmable logic control 11 Positioning column 4 Main machine 12 First buckle 41 Housing 1a Limiting groove 41a Mounting groove 1b Guide groove 411 Guide rail 2 Expansion board 412 Second buckle 21 Convex part 42 Mainboard 2a Positioning hole

[0026] The utility model discloses the realization, functional characteristics and advantages will be combined with embodiment, and reference is made to the further description of the drawings. Specific implementation

[0027] The technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the scope of the utility model protection.

[0028] It should be noted that if the utility model embodiment has involved the directionality indication (such as up, down, left, right, front, back, …), then the directionality indication is only used to explain the relative position relationship, movement condition etc. between the components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly.

[0029] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0030] The utility model provides a kind of expansion card 1000.

[0031] Please refer to Figure 1 、 Figure 2 And Figure 3 In an embodiment of the utility model, the expansion card 1000 includes box cover 1 and expansion board 2, the side wall of box cover 1 is formed with positioning column 11 extending along first direction and limiting groove 1a extending along second direction, first direction and second direction form included angle;Expansion board 2 is formed with convex part 21 and positioning hole 2a, convex part 21 is connected with the groove wall of limiting groove 1a, positioning column 11 is inserted into positioning hole 2a.

[0032] In the technical scheme of the utility model, the user inserts positioning column 11 on box cover 1 into positioning hole 2a of expansion board 2, after insertion, when convex part 21 on expansion board 2 reaches the position of limiting groove 1a on box cover 1, convex part 21 is clamped into limiting groove 1a, and the connection of expansion board 2 and box cover 1 is completed. The insertion fit of positioning column 11 and positioning hole 2a and the clamping fit of convex part 21 and limiting groove 1a can ensure the firmness of the connection between expansion board 2 and box cover 1, the user only needs to insert positioning column 11 into positioning hole 2a, and then clamps convex part 21 into limiting groove 1a, to complete the connection of expansion board 2 and box cover 1, simplify the installation process, without professional technical personnel to carry out complex operation, reduce installation difficulty and installation cost.

[0033] It should be noted that the first direction is the insertion direction of the expansion card 1000 into the programmable logic controller 2000.

[0034] It can be understood that the included angle between the first direction and the second direction can be any degree within 360° (except 180° and 360°). In an embodiment of the utility model, the included angle between the first direction and the second direction is 90°. The directions of the positioning column 11 and the limiting groove 1a are set to 90°, which can effectively limit the loosening and displacement of the expansion board 2 in the vertical and horizontal directions, thereby significantly enhancing the overall structural stability of the expansion card 1000. The structure design of the 90° angle makes the connection and separation operation of the expansion board 2 and the box cover 1 simple and fast. When maintaining and replacing, the user can quickly complete the operation without complex tools or professional skills. Therefore, the included angle between the first direction and the second direction is preferably 90°.

[0035] The expansion board 2 can form at least one positioning hole 2a, and the box cover 1 can form a corresponding number of positioning columns 11. In an embodiment of the utility model, the expansion board 2 forms two positioning holes 2a, and the two positioning holes 2a are relatively distributed along the first direction. The two side walls of the box cover 1 each form a positioning column 11, and each positioning column 11 is correspondingly arranged with a positioning hole 2a. The expansion board 2 is provided with two positioning holes 2a, and the box cover 1 is provided with corresponding positioning columns 11 on both sides, forming a two-point positioning structure, which can further enhance the stability of the connection and effectively prevent the expansion board 2 from shaking or shifting during installation and use. At the same time, through the cooperation of the two positioning holes 2a and the positioning columns 11, more accurate alignment guidance is provided for the expansion board 2, ensuring the accuracy during installation and reducing the risk of poor contact or damage caused by installation errors. In summary, the expansion board 2 is preferably provided with two positioning holes 2a, and the box cover 1 is also preferably provided with two positioning columns 11.

[0036] Similarly, the expansion board 2 can form at least one protrusion 21, and the box cover 1 can form a corresponding number of limiting grooves 1a. In an embodiment of the utility model, the expansion board 2 forms protrusions 21 on the opposite sides along the first direction, and the two side walls of the box cover 1 each form a limiting groove 1a, and each protrusion 21 abuts against the groove wall of a limiting groove 1a. The expansion board 2 is provided with protrusions 21 on both sides, and the box cover 1 is provided with corresponding limiting grooves 1a on both sides, forming a two-point limiting structure, which significantly enhances the connection firmness between the expansion board 2 and the box cover 1, effectively preventing the expansion board 2 from loosening or falling off. Therefore, the expansion board 2 is preferably provided with two protrusions 21, and the box cover 1 is preferably provided with two limiting grooves 1a.

[0037] In an embodiment of the utility model, expansion card 1000 still include connector male seat 3, connector male seat 3 is located expansion board 2 back to the side of box cover 1, and be used for with programmable logic controller 2000's host computer 4 electric connection. Connector male seat 3 is located expansion board 2 back to the side of box cover 1, can directly with programmable logic controller 2000 host computer 4 realizes electric connection, need not additional wiring, simplifies installation process, improves installation efficiency, connect with programmable logic controller 2000 host computer 4 through the standardization of connector male seat 3, ensure the stability of electrical connection, reduce the signal transmission interruption or error caused by poor contact or looseness.

[0038] The utility model discloses still propose a kind of programmable logic controller 2000, the programmable logic controller 2000 including host computer 4 and expansion card 1000, the specific structure of the expansion card 1000 refers to above-mentioned embodiment, since the programmable logic controller 2000 has adopted all technical solutions of above-mentioned all embodiments, at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here will not be repeated in detail. Wherein, expansion board 2 is electrically connected with host computer 4.

[0039] Please refer to Figure 4 And Figure 5 In an embodiment of the utility model, host computer 4 includes shell 41 and mainboard 42, shell 41 is formed with installation cavity;Mainboard 42 is located shell 41 and is located in installation cavity, and expansion board 2 is electrically connected with mainboard 42. Installation cavity provides physical protection for mainboard 42, can effectively prevent dust, foreign matter from entering and damage to mainboard 42 by external mechanical impact, to prolong the service life of programmable logic controller 2000.

[0040] In an embodiment of the utility model, shell 41 is formed with installation groove 41a, and the groove wall of installation groove 41a is slidably connected with box cover 1. The installation groove 41a of shell 41 is slidably connected with box cover 1, so that expansion card 1000 can be installed and disassembled by simple sliding action, without complex tools or fasteners, to improve the efficiency of installation and maintenance.

[0041] It can be understood that the sliding connection mode of the shell 41 and the box cover 1 can be that guide rails 411 are arranged on the box cover 1, and corresponding pulleys are arranged on the shell 41, or the guide rails 411 are formed on both sides of the groove wall of the mounting groove 41a, and the guide grooves 1b are formed on both sides of the box cover 1. In an embodiment of the utility model, the guide rails 411 are formed on both sides of the groove wall of the mounting groove 41a, and the guide grooves 1b are formed on both sides of the box cover 1, and each guide rail 411 is in sliding connection with the groove wall of a guide groove 1b. The cooperation of the guide rail 411 and the guide groove 1b provides accurate guidance for the installation of the box cover 1, ensures that the box cover 1 can be accurately slid into the mounting groove 41a, reduces installation errors, and improves installation success rate; at the same time, the sliding connection of the guide rail 411 and the guide groove 1b forms a mechanical constraint, which can effectively prevent the box cover 1 from shaking or shifting after installation, and enhances the connection stability between the expansion card 1000 and the shell 41 of the host 4.

[0042] In an embodiment of the utility model, the side wall of the box cover 1 further forms a first buckle 12, the groove wall of the mounting groove 41a further forms a second buckle 412, and the first buckle 12 is connected with the second buckle 412. The connection of the first buckle 12 and the second buckle 412 further fixes the positional relationship between the box cover 1 and the mounting groove 41a, ensures that the box cover 1 will not loosen or fall off after installation due to external force or vibration, thereby enhancing the firmness of the connection; the user only needs to press or pull the buckle slightly to complete the installation or disassembly, which can improve the disassembly efficiency, makes the installation and disassembly process more convenient, and is convenient for users to use.

[0043] The above-mentioned is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. An expansion card, applied to a programmable logic controller, characterized in that, The expansion card includes: The lid has a sidewall with a positioning post extending in a first direction and a limiting groove extending in a second direction, the first direction and the second direction forming an angle; and An extension plate having a protrusion and a positioning hole, the protrusion engaging with the wall of the limiting groove, and the positioning pin being inserted into the positioning hole.

2. The expansion card as described in claim 1, characterized in that, The angle between the first direction and the second direction is 90°.

3. The expansion card as described in claim 2, characterized in that, The expansion plate has two positioning holes, which are distributed opposite to each other along the first direction; both sides of the box cover have positioning posts, and each positioning post is corresponding to a positioning hole.

4. The expansion card as described in claim 3, characterized in that, The expansion plate has protrusions on both sides of the opposite sides along the first direction, and the box cover has limiting grooves on both side walls. Each protrusion engages with the groove wall of a limiting groove.

5. The expansion card as described in any one of claims 1 to 4, characterized in that, The expansion card also includes a male connector, which is located on the side of the expansion board facing away from the cover and is used for electrical connection with the host of the programmable logic controller.

6. A programmable logic controller, characterized in that, The programmable logic controller includes a host and an expansion card as described in any one of claims 1 to 5, wherein the expansion card is electrically connected to the host.

7. The programmable logic controller as described in claim 6, characterized in that, The host includes a casing and a motherboard, the casing forming a mounting cavity; the motherboard is disposed in the casing and located within the mounting cavity, and the expansion board is electrically connected to the motherboard.

8. The programmable logic controller as described in claim 7, characterized in that, The outer casing has a mounting groove, and the groove wall is slidably connected to the lid.

9. The programmable logic controller as described in claim 8, characterized in that, Guide rails are formed on both sides of the mounting groove wall, and guide grooves are formed on both sides of the cover. Each guide rail is slidably connected to the groove wall of a guide groove.

10. The programmable logic controller as described in claim 9, characterized in that, The side wall of the lid is also formed with a first buckle, and the groove wall of the mounting groove is also formed with a second buckle, and the first buckle is connected to the second buckle.

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