Dustproof interface of PLC (Programmable Logic Controller)

Abstract

The utility model discloses a PLC controller dustproof interface, and relates to the PLC controller technology field, the PLC controller dustproof interface comprises interface slots arranged on a controller main body, the back side of the controller main body is uniformly provided with the interface slots, the external parts of the interface slots are provided with a protection frame, the protection frame is in a hollow structure, the middle part of the back side of the protection frame is provided with a wiring slot, and the wiring slot is provided with a wiring groove. A sealing dustproof assembly is installed in the side, close to the wiring groove, of the protection frame. According to the dustproof interface of the PLC, the dustproof block and the rubber block can rotate under the action of the torsional spring, so that the protruding rubber block is embedded into the wiring groove to seal the wiring groove, and at the moment, the two rubber blocks of semicircular structures can be tightly attached under the action of the magnetic attraction block to prevent mutual dustproof deviation; and meanwhile, the sealing performance with the wiring groove can be enhanced through the sealing layer, the rubber block can be sealed again through the dust blocking block, the sealing effect is fully improved, and the dustproof and waterproof effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PLC controllers, in particular to a dust-proof interface of a PLC controller. Background Art

[0002] A PLC controller is a digital computing and operating electronic system designed for use in industrial environments. It uses programmable memory and is a digital logic controller for automated control. Control instructions can be loaded into memory for storage and execution at any time.

[0003] For example, the utility model application number CN201921584200.0 discloses a dustproof interface for a PLC controller that is easy to wire. However, the dustproof interface for a PLC controller similar to the above application currently has the following shortcomings: only a single dustproof structure is provided, which may easily lead to deviation of the dustproof structure, poor sealing effect, and poor dustproof and waterproof effect, and dust accumulation may cause poor contact at the interface.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a dust-proof interface for a PLC controller is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a dustproof interface for a PLC controller to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dustproof interface of a PLC controller, comprising an interface slot installed on a controller body, the rear side of the controller body being evenly provided with interface slots, and a protective frame being installed on the outside of the interface slot, the protective frame being a hollow structure, and a wiring slot being provided in the middle of the rear side of the protective frame, a sealing dustproof assembly being installed on the inside of the protective frame close to the wiring slot, and the sealing dustproof assembly comprising a torsion spring, a dust block, a rubber block, a magnetic block and a sealing layer, a dust block being installed on one side of the torsion spring, and a rubber block being fixed on the outside of the dust block, a magnetic block being embedded in the middle of the rubber block, and a sealing layer being fixed on one side of the outer ring of the rubber block, and a positioning clamping assembly being installed on the inside of the protective frame.

[0007] Furthermore, ear plates are fixed on both sides of the protective frame, and the ear plates are connected to the controller body by bolts.

[0008] Furthermore, a dust cover is installed on the rear exterior of the protection frame through a hinge, and both the protection frame and the dust cover are transparent structures.

[0009] Furthermore, the sealing and dustproof components are symmetrically distributed in two groups on the left and right, and the dust blocking blocks and rubber blocks are both semicircular in structure.

[0010] Furthermore, the positioning clamping assembly includes a spring, a rubber clamping strip and a guide strip. Springs are fixed on the upper and lower sides of the interior of the protective frame, and a rubber clamping strip is installed on the side of the spring close to the center line of the protective frame, and a guide strip is connected between the rubber clamping strip and the inner wall of the protective frame.

[0011] Furthermore, the rubber clamping strip is an arc-shaped structure, the guide strip is an inclined structure, and the guide strip is a flexible structure.

[0012] The utility model provides a dust-proof interface for a PLC controller, which has the following beneficial effects:

[0013] The utility model is provided with a sealing and dust-proof component. When wiring, the dust block and the rubber block in the middle of the wiring slot can be forced to expand to facilitate the insertion of the connecting wires and connectors. On the contrary, when no wiring is connected, the dust block and the rubber block can rotate under the action of the torsion spring, so that the protruding rubber block is embedded in the interior of the wiring slot to seal it. At this time, the two rubber blocks with semicircular structures can fit tightly under the action of the magnetic block to prevent mutual dust-proof deviation. At the same time, the sealing layer can enhance the sealing with the wiring slot, and the dust block can seal the rubber block again, thereby fully improving the sealing effect and playing the role of dustproof and waterproof.

[0014] The utility model is provided with a positioning clamping assembly, and the connector of the connecting wire can be inserted into the protective frame and finally docked with the interface groove to realize wiring. The guide strip with an inclined structure is convenient for guiding the connecting wire and the connector, and the rubber clamping strip with an arc-shaped structure can flexibly clamp the upper and lower sides of the connecting wire and the connector under the elastic action of the spring, thereby improving the tightness during the wiring process. At the same time, the guide strip is a flexible structure that is convenient for cooperating with the activity and extension of the rubber clamping strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a dust-proof interface for a PLC controller of the utility model;

[0016] Figure 2 This is a schematic diagram of a half-section structure of a protective frame for a dustproof interface of a PLC controller according to the present invention;

[0017] Figure 3 This is a schematic diagram of the explosion structure inside the protective frame of a PLC controller dustproof interface of the utility model;

[0018] Figure 4 This is a rear view structural diagram of a sealed dustproof component of a PLC controller dustproof interface according to the present invention.

[0019] In the figure: 1. Controller body; 2. Interface slot; 3. Protective frame; 4. Wiring slot; 5. Ear plate; 6. Sealing and dustproof assembly; 601. Torsion spring; 602. Dust block; 603. Rubber block; 604. Magnetic block; 605. Sealing layer; 7. Positioning and clamping assembly; 701. Spring; 702. Rubber clamping strip; 703. Guide strip; 8. Dust cover. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1-Figure 3 As shown, a dustproof interface of a PLC controller includes an interface slot 2 installed on a controller body 1, interface slots 2 are evenly arranged on the rear side of the controller body 1, and a protective frame 3 is installed on the outside of the interface slot 2, the protective frame 3 is a hollow structure, and a wiring slot 4 is arranged in the middle of the rear side of the protective frame 3, ear plates 5 are fixed on both sides of the protective frame 3, and the ear plates 5 are bolted to the controller body 1, and a dust cover 8 is installed on the outside of the rear side of the protective frame 3 by rotating through hinges, and the protective frame 3 and the dust cover 8 are both transparent structures; the connector of the connecting line can be inserted into the protective frame 3 and finally docked with the interface slot 2 to realize wiring. The transparent structure of the protective frame 3 is convenient for observing the wiring situation inside it, and the dust cover 8 is convenient for preliminary dust protection on the outside of the wiring slot 4.

[0022] like Figure 2-Figure 4 As shown, a sealing dustproof component 6 is installed inside the protective frame 3 near the wiring slot 4, and the sealing dustproof component 6 includes a torsion spring 601, a dust block 602, a rubber block 603, a magnetic block 604 and a sealing layer 605. A dust block 602 is installed on one side of the torsion spring 601, and a rubber block 603 is fixed to the outside of the dust block 602. A magnetic block 604 is embedded in the middle of the rubber block 603, and a sealing layer 605 is fixed to one side of the outer ring of the rubber block 603. The sealing dustproof component 6 is symmetrically distributed in two groups on the left and right, and the dust block 602 and the rubber block 603 are both semicircular structures; when wiring The dust block 602 and rubber block 603 in the middle of the slot 4 can be expanded under force to facilitate the insertion of connecting wires and connectors. On the contrary, when no wiring is connected, the dust block 602 and rubber block 603 can rotate under the action of the torsion spring 601, so that the protruding rubber block 603 is embedded in the interior of the wiring slot 4 to seal it. At this time, the two semicircular rubber blocks 603 can fit tightly under the action of the magnetic block 604. At the same time, the sealing layer 605 can enhance the sealing with the wiring slot 4. The dust block 602 can seal the rubber block 603 again, thereby fully improving the sealing effect and playing a role in dust and water prevention.

[0023] like Figure 2-Figure 3As shown, a positioning clamping assembly 7 is installed inside the protective frame 3, and the positioning clamping assembly 7 includes a spring 701, a rubber clamping strip 702 and a guide strip 703. Springs 701 are fixed on the upper and lower sides of the protective frame 3, and a rubber clamping strip 702 is installed on the side of the spring 701 close to the center line of the protective frame 3, and a guide strip 703 is connected between the rubber clamping strip 702 and the inner wall of the protective frame 3. The rubber clamping strip 702 has an arc-shaped structure, and the guide strip 703 has an inclined structure, and the guide strip 703 has a flexible structure; the guide strip 703 with an inclined structure is convenient for guiding the connecting wires and connectors, and the rubber clamping strip 702 with an arc-shaped structure can flexibly clamp the upper and lower sides of the connecting wires and connectors under the elastic action of the spring 701, thereby improving the tightness during the wiring process. At the same time, the guide strip 703 has a flexible structure to facilitate the movement and extension of the rubber clamping strip 702.

[0024] In summary, if Figures 1-4 As shown, the dustproof interface of the PLC controller, when in use, first open the dustproof cover 8 by rotating the hinge, then insert the connector of the connecting line into the protective frame 3 and finally dock with the interface slot 2 to realize wiring. When wiring, the dust block 602 and the rubber block 603 in the middle of the wiring slot 4 can be forced to expand to facilitate the insertion of the connecting line and the connector. At this time, the guide strip 703 with an inclined structure can guide the connecting line and the connector, and the rubber clamping strip 702 with an arc-shaped structure can flexibly clamp the upper and lower sides of the connecting line and the connector under the elastic action of the spring 701, thereby improving the wiring process. On the contrary, when no wiring is connected, the dust block 602 and the rubber block 603 can rotate under the action of the torsion spring 601, so that the protruding rubber block 603 is embedded in the interior of the wiring slot 4 to seal it. At this time, the two semicircular rubber blocks 603 can fit tightly under the action of the magnetic block 604. At the same time, the sealing layer 605 can enhance the sealing with the wiring slot 4, and the dust block 602 can seal the rubber block 603 again, thereby fully improving the sealing effect and playing a role in dust and water prevention. In this way, the use process of the PLC controller dustproof interface is completed.

[0025] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A dustproof interface for a PLC controller, comprising an interface slot (2) mounted on a controller body (1), characterized in that: The rear side of the controller body (1) is evenly provided with interface slots (2), and a protective frame (3) is installed on the outside of the interface slot (2). The protective frame (3) is a hollow structure, and a wiring slot (4) is provided in the middle of the rear side of the protective frame (3). A sealing dustproof component (6) is installed inside the protective frame (3) near the wiring slot (4), and the sealing dustproof component (6) includes a torsion spring (601), a dust block (602), a rubber block (603), a magnetic block (604) and a sealing layer (605). The dust block (602) is installed on one side of the torsion spring (601), and the rubber block (603) is fixed on the outside of the dust block (602). The magnetic block (604) is embedded in the middle of the rubber block (603), and the sealing layer (605) is fixed on the outer ring side of the rubber block (603). A positioning clamping component (7) is installed inside the protective frame (3).

2. A PLC controller dustproof interface according to claim 1, characterized in that: Ear plates (5) are fixed on both sides of the protection frame (3), and the ear plates (5) are connected to the controller body (1) by bolts.

3. A PLC controller dustproof interface according to claim 1, characterized in that: A dust cover (8) is rotatably mounted on the rear exterior of the protection frame (3) via a hinge, and both the protection frame (3) and the dust cover (8) are transparent structures.

4. A PLC controller dustproof interface according to claim 1, characterized in that: The sealing dustproof components (6) are symmetrically distributed in two groups on the left and right, and the dust blocking blocks (602) and the rubber blocks (603) are both semicircular in structure.

5. The dustproof interface of a PLC controller according to claim 1, characterized in that: The positioning clamping assembly (7) comprises a spring (701), a rubber clamping strip (702) and a guide strip (703); the springs (701) are fixed on both upper and lower sides of the interior of the protective frame (3); a rubber clamping strip (702) is installed on one side of the spring (701) close to the center line of the protective frame (3); and a guide strip (703) is connected between the rubber clamping strip (702) and the inner wall of the protective frame (3).

6. A PLC controller dustproof interface according to claim 5, characterized in that: The rubber clamping strip (702) is an arc-shaped structure, the guide strip (703) is an inclined structure, and the guide strip (703) is a flexible structure.

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