An electrical equipment enclosure for electrical engineering

Abstract

This utility model discloses an electrical equipment enclosure for electrical engineering, including an enclosure body, an enclosure door, and a protective coil at the bottom of the enclosure. A limiting component is provided on the bottom inner side of the enclosure. This component consists of a pair of locking plates with semi-circular openings, a guide, and a cylindrical limiting block. By pushing the locking plates to slide, the semi-circular openings can be used to clamp the middle diameter of the protective coil, preventing its vertical displacement. Simultaneously, the cylindrical limiting block on the locking plates will engage with the circular groove of the protective coil, forming a mechanical interlock and effectively preventing the protective coil from rotating horizontally. This utility model has a simple structure, is easy to operate, and can greatly improve the stability of the protective coil installation, thereby improving the enclosure's sealing and dustproof performance, and ensuring high reliability.

Description

Technical Field

[0001] This utility model belongs to the field of electrical box technology, and in particular relates to an electrical equipment enclosure for electrical engineering. Background Technology

[0002] In electrical engineering, electrical equipment enclosures are used to house and protect various precision electrical components, such as PLCs, relays, and circuit breakers. The bottom of the enclosure typically has cable routing holes and is fitted with cable guards to accommodate various types of cables, providing protection, sealing, and dust prevention.

[0003] Common cable guard coils are often pressed directly into the cable routing holes of the enclosure using an interference fit. However, this installation method can easily cause the cable guard coil to loosen during repeated cable insertions and removals or when subjected to external cable pulling. It may even rotate or shift within the hole, leading to poor sealing and allowing dust and impurities to enter the enclosure, affecting equipment operation. Furthermore, traditional cable guard coils lack an effective anti-rotation structure; the internal star-shaped dustproof plates may deviate from their optimal sealing position due to rotation, reducing dustproof performance.

[0004] Therefore, there is an urgent need for a chassis structure that can effectively fix the coil and prevent its displacement and rotation. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an electrical equipment enclosure for electrical engineering that can effectively fix the protective coil and prevent it from vertical displacement and horizontal rotation after installation, thereby improving the enclosure's sealing, dustproofing and reliability.

[0006] This utility model achieves the above-mentioned objectives through the following technical solution: it includes a box body assembled from sheet metal structures, and a box door installed on the front of the box body. A grounding wire is connected between the box door and the box body. A back plate is installed inside the box body, and electrical components are installed on the surface of the back plate. A wire routing hole is provided through the bottom of the box body, and a protective coil is installed inside the wire routing hole. A limiting component is provided on the inner bottom of the box body. The limiting component includes a set of clamping plates. Several semi-circular openings are opened on one side of the clamping plates. The limiting component clamps the outer surface of the middle diameter of the protective coil to prevent it from vertical displacement or horizontal rotation.

[0007] Furthermore, the protective coil is an I-shaped protective coil with a cross-shaped petal dustproof sheet fixed inside. A set of circular slots are opened at the top and bottom of the protective coil, and the edges of the circular slots are open. The area of ​​the circular slots is not less than 3 / 4 of the area of ​​a circle with the same diameter.

[0008] Furthermore, the height of the inner diameter of the protective coil is the same as the height of the housing with the clamping plate. After the clamping plate is slid into the inner diameter, the movable gap of the protective coil is cleared, and vertical displacement is not possible.

[0009] Furthermore, the limiting component also includes guide members at both ends of the card plate. The guide members have guide grooves on their inner sides. Both ends of the card plate are engaged in the inner side of the guide grooves and slidably connected. The side of the card plate has strip-shaped protrusions with triangular cross-sections. The distance between the outermost part of the card plate and the strip-shaped protrusions does not exceed the width of the card plate.

[0010] Furthermore, the card plate slides inside the guide groove to adjust the relative position and locking relationship between the card plate and the guard coil. After the wiring installation is completed, the card plate is inserted into the guard coil to form a limit.

[0011] Furthermore, a number of cylindrical limiting blocks are fixedly provided on the top of the card plate. The cylindrical limiting blocks are located at the arc edge of the semi-circular opening, and the number of cylindrical limiting blocks is the same as that of the semi-circular opening. The cylindrical limiting blocks are used to be inserted into the circular groove.

[0012] Furthermore, the cylindrical limiting blocks on both plates are engaged in the circular slots to create a limiting effect, preventing the protective coil from rotating along the vertical central axis. The opening size of the circular slot edge is smaller than the diameter of the cylindrical limiting block, creating a self-locking effect so that the cylindrical limiting block will not easily come out.

[0013] Furthermore, a push block is fixedly provided at the center of the top of the card plate.

[0014] Furthermore, the push block provides a force point for the operator to push the pallet to slide.

[0015] Beneficial effects: This utility model is reasonably designed and has the following beneficial effects: 1. In this utility model, the clamping plate holds the middle diameter of the protective coil, eliminating vertical assembly gaps and effectively preventing vertical displacement of the protective coil when pulled by the cable. The combination of the cylindrical limiting block and the circular slot mechanically restricts the horizontal rotation of the protective coil. This dual protection ensures the protective coil is extremely securely fixed, preventing gaps that may result from loosening and ensuring the airtightness of the enclosure. Simultaneously, it prevents the rotation of the protective coil from causing misalignment of the internal star-shaped dustproof sheet, maintaining its optimal dustproof sealing effect. 2. In this utility model, the sliding of the card plate can be easily achieved by pushing the block, thereby locking or releasing the protective coil. The operation is simple and convenient, improving the installation efficiency. The limiting component is mainly composed of a card plate, guide parts and a small number of sheet metal parts and plastic parts. The structure is simple and easy to manufacture. It hardly increases the additional manufacturing cost of the chassis, but significantly improves the product quality and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the limiting component structure of this utility model; Figure 4 This is a schematic diagram of the box structure of this utility model.

[0017] In the diagram: 1-box body, 2-box door, 3-limiting assembly; 101-Circular hole for wiring, 102-Coil guard, 301-Card plate, 302-Semi-circular opening, 303-Circular groove, 304-Guide component, 305-Guide groove, 306-Strip protrusion, 307-Cylindrical limit block, 308-Push block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Combination Figures 1 to 4 The diagram shows an electrical equipment enclosure for electrical engineering, comprising a box body 1 assembled from sheet metal, and a door 2 installed on the front of the box body 1. A grounding wire is connected between the door 2 and the box body 1. A back plate is installed inside the box body 1, and electrical components are installed on the surface of the back plate. A wire routing hole 101 is provided through the bottom of the box body 1, and a wire protection coil 102 is installed inside the wire routing hole 101. A limiting component 3 is provided on the bottom inner side of the box body 1. The limiting component 3 includes a set of clamping plates 301. Several semi-circular openings 302 are opened on one side of the clamping plates 301. The limiting component 3 clamps the outer surface of the middle diameter of the wire protection coil 102 to prevent it from vertical displacement or horizontal rotation.

[0020] Among them, the protective coil 102 is an H-shaped protective coil and a cross-shaped petal dustproof sheet is fixed inside it. A set of circular slots 303 are opened at the top and bottom of the protective coil 102. The edge of the circular slots 303 is open and the area of ​​the circular slots 303 is not less than 3 / 4 of the area of ​​a circle with the same diameter.

[0021] The height of the middle diameter of the protective coil 102 is the same as the height of the housing 1 plus the clamping plate 301. After the clamping plate 301 is slid and inserted into the middle diameter, the movable gap of the protective coil 102 is cleared, and it cannot be vertically displaced.

[0022] The limiting component 3 also includes guide members 304 at both ends of the card plate 301. The guide members 304 have guide grooves 305 on their inner sides. Both ends of the card plate 301 are inserted into the inner side of the guide grooves 305 and are slidably connected. The side of the card plate 301 has strip-shaped protrusions 306. The cross-section of the strip-shaped protrusions 306 is triangular. The distance between the outermost part of the card plate 301 and the strip-shaped protrusions 306 does not exceed the width of the card plate 301.

[0023] The clamping plate 301 slides inside the guide groove 305, thereby adjusting the relative position and clamping relationship between the clamping plate 301 and the protective coil 102. After the wiring installation is completed, the clamping plate 301 is clamped into the protective coil 102 to form a limit.

[0024] A number of cylindrical limiting blocks 307 are fixedly provided on the top of the card plate 301. The cylindrical limiting blocks 307 are located at the arc edge of the semi-circular opening 302, and the number of cylindrical limiting blocks 307 is the same as that of the semi-circular opening 302. The cylindrical limiting blocks 307 are used to be inserted into the circular slot 303.

[0025] The cylindrical limiting blocks 307 on both plates 301 are engaged in the circular slots 303 to form a limiting effect, preventing the protective coil 102 from rotating along the vertical central axis. The opening size of the edge of the circular slot 303 is smaller than the diameter of the cylindrical limiting block 307, forming a self-locking effect so that the cylindrical limiting block 307 will not easily come out.

[0026] A push block 308 is fixedly provided at the top center of the card plate 301.

[0027] The push block 308 provides a force point for the operator to push the card plate 301 to slide.

[0028] Working principle: In the process of using this utility model, the protective coil 102 is inserted into the wiring hole 101 from the bottom of the box 1 to ensure that the protective coil 102 is installed in place. The guide 304 is installed on the bottom of the inner side of the box 1 with screws. The plastic plate 301 is slightly bent and inserted into the inner side of the guide groove 305 from one side. At this time, the plate 301 can slide freely in the guide groove 305. The position of the plate 301 is adjusted by pushing the push block 308 to make it closer to the protective coil 102. Pass the cable through the protective coil 102 and perform the wiring operation according to the electrical equipment wiring requirements. After the wiring is completed, push the clamp 301 again so that the semi-circular opening 302 fits tightly against the outer surface of the middle diameter of the protective coil 102. At the same time, the cylindrical limiting block 307 is inserted into the circular slot 303 to complete the limiting of the protective coil 102.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electrical equipment enclosure for electrical engineering, comprising a box body (1) assembled from sheet metal structures, and a door (2) installed on the front of the box body (1), wherein a grounding wire is connected between the door (2) and the box body (1), a back plate is installed inside the box body (1), electrical components are installed on the surface of the back plate, and a wiring hole (101) is provided through the bottom of the box body (1), wherein a protective coil (102) is sleeved and installed inside the wiring hole (101), characterized in that: The bottom inner side of the housing (1) is provided with a limiting component (3). The limiting component (3) includes a set of clamping plates (301). Several semi-circular openings (302) are opened on one side of the clamping plate (301). The limiting component (3) clamps the outer surface of the inner diameter of the protective coil (102) to prevent it from vertical displacement or horizontal rotation.

2. The electrical equipment chassis for electrical engineering according to claim 1, characterized in that: The protective coil (102) is an I-shaped protective coil and a cross-shaped petal dustproof sheet is fixed inside it. A set of circular slots (303) are opened at the top and bottom of the protective coil (102). The circular slots (303) have openings at their edges. The area of ​​the circular slots (303) is not less than 3 / 4 of the area of ​​a circle with the same diameter.

3. The electrical equipment chassis for electrical engineering according to claim 2, characterized in that: The limiting component (3) also includes guide members (304) at both ends of the card plate (301). The guide members (304) have guide grooves (305) on their inner sides. Both ends of the card plate (301) are inserted into the inner side of the guide grooves (305) and slidably connected. The side of the card plate (301) is provided with strip-shaped protrusions (306). The cross-section of the strip-shaped protrusions (306) is triangular. The distance between the outermost part of the card plate (301) and the strip-shaped protrusions (306) does not exceed the width of the card plate (301).

4. The electrical equipment chassis for electrical engineering according to claim 3, characterized in that: The top of the card plate (301) is fixedly provided with a plurality of cylindrical limiting blocks (307). The cylindrical limiting blocks (307) are located at the arc edge of the semi-circular opening (302), and the number of cylindrical limiting blocks (307) is the same as that of the semi-circular opening (302). The cylindrical limiting blocks (307) are used to be inserted into the circular slot (303).

5. The electrical equipment chassis for electrical engineering according to claim 4, characterized in that: A push block (308) is fixedly provided at the top center of the card plate (301).

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