An arc-resistant terminal cover

Abstract

The utility model relates to a kind of arc-proof wiring terminal shield, belong to wiring terminal technical field.The arc-proof wiring terminal shield, including protection mechanism, arc extinguishing mechanism and mounting mechanism, the protection mechanism includes shield body and the through opening being opened in the side surface of shield body, shield body is located wiring terminal outer arc surface;Arc extinguishing mechanism includes labyrinth air hole and the arc-proof component for cooling and energy absorption of arc;Mounting mechanism is used for the quick disassembly replacement of arc-proof component;By setting arc-proof component inside shield body, the arc generated to wiring terminal is effectively cooled and energy absorption, and several groups of labyrinth air hole airflow are continuously collided, return in labyrinth channel, prolong the residence time of gas in shield, so that it has more opportunity to be cooled and deionization, simultaneously by its special structure, slowly adjust the gas exchange inside and outside shield, avoid gas pressure to rise sharply, maintain the relative stability of shield internal gas pressure.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and in particular to an arc-proof terminal block cover. Background Technology

[0002] During the operation of electrical equipment, terminals, as key connecting components for current transmission, are highly susceptible to generating electric arcs when current is switched on or off or when there is poor contact. Electric arcs not only release a large amount of heat and energy, but may also be accompanied by the ejection of high-temperature, high-pressure gases. If not effectively blocked, they will pose a serious threat to the safety of surrounding equipment, lines, and operators.

[0003] Currently, existing terminal block covers on the market have significant shortcomings in arc blocking. Traditional covers are mostly made of a single insulating material, relying solely on simple physical shielding to block arcs. For high-energy arcs, their blocking effect is very limited. A single insulating layer is insufficient for effectively cooling and absorbing the energy of the arc, allowing it to easily penetrate the cover or escape through gaps, creating safety hazards. Furthermore, some arc-blocking plates are fixedly connected to the cover; when the arc-blocking plate is damaged due to prolonged exposure to the high temperature of the arc, the entire cover needs to be replaced, increasing usage costs and maintenance difficulty. Utility Model Content

[0004] Therefore, it is necessary to provide an arc-proof terminal cover to address the problem that a single insulation layer is insufficient to effectively cool and absorb electric arcs, and that electric arcs can easily penetrate the cover or escape from the gaps in the cover, causing safety hazards.

[0005] An arc-proof terminal cover, comprising: The protective mechanism includes a protective cover, one side of which has an opening for wiring of the terminal block. The protective cover is located on the outer arc surface of the terminal block, and a labyrinth-style air hole is formed on the surface of the protective cover. An arc-extinguishing mechanism, comprising an arc-proof component for cooling and absorbing the electric arc, the arc-proof component cooperating with a labyrinth-type vent to extinguish the arc; The installation mechanism, located inside the protective cover, is used for quick disassembly and replacement of the arc-proof component.

[0006] Furthermore, the anti-arc component includes an arc-blocking plate, a perforated metal plate, and a metal mesh plate. The upper surface of the metal mesh plate is provided with several sets of ventilation holes. The metal mesh plate is located above the wiring terminal, the arc-blocking plate is located above the metal mesh plate, and the perforated metal plate is located between the arc-blocking plate and the metal mesh plate.

[0007] Furthermore, the installation mechanism includes an installation frame, with snap-fit ​​blocks on both sides of the installation frame, a positioning component for positioning at one end of the installation frame, and a limiting component for limiting the arc protection component inside the installation frame. There are two sets of snap-fit ​​blocks, and the two sets of snap-fit ​​blocks are convex blocks. The inside of the protective cover is provided with snap-fit ​​grooves corresponding to the installation frame and snap-fit ​​blocks.

[0008] Furthermore, the positioning component includes a mounting plate and a spring plunger. The mounting plate is fixedly disposed on the outside of the mounting frame, the spring plunger is disposed on the lower surface of the mounting plate, and an extension plate is fixedly disposed on the side of the protective cover, and the extension plate has a positioning hole corresponding to the spring plunger.

[0009] Furthermore, the limiting component includes a limiting plate and a mounting post. The mounting post is fixedly disposed on the side of the mounting frame away from the mounting plate, and the limiting plate is rotatably disposed on one side of the mounting frame via the mounting post.

[0010] Furthermore, the inner side of the mounting frame is provided with mounting grooves corresponding to the arc-blocking plate, the perforated metal plate, and the metal mesh plate, and the arc-blocking plate, the perforated metal plate, and the metal mesh plate do not contact each other.

[0011] Furthermore, the side of the mounting groove closest to the mounting plate is not connected to the outside, while the side of the mounting groove furthest from the mounting plate is connected to the outside.

[0012] Furthermore, the limiting plate is disposed on the side of the arc-blocking plate, the perforated metal plate, and the metal mesh plate, and the limiting plate is in contact with the arc-blocking plate, the perforated metal plate, and the metal mesh plate.

[0013] The beneficial effects of this utility model are as follows: 1. The terminal block cover of this utility model effectively cools and absorbs the energy generated by the electric arc generated by the terminal block by setting an anti-arc component inside the cover. Furthermore, several sets of labyrinth-style air holes allow the airflow to collide and reflux continuously within the labyrinth channel, extending the residence time of the gas inside the cover and giving it more opportunities to be cooled and deionized. At the same time, its special structure slowly regulates the gas exchange inside and outside the cover, avoiding sudden rises and falls in air pressure and maintaining the relative stability of the air pressure inside the cover.

[0014] 2. The terminal cover of this utility model installs the anti-arc component inside the mounting frame, and the mounting frame is set inside the cover body. When the anti-arc component needs maintenance or replacement, the mounting frame can be pulled out and the limiting plate can be rotated to take out the anti-arc component for maintenance and replacement, thereby avoiding the need to replace the entire cover, thus reducing the cost of use and maintenance difficulty. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 For the present utility model Figure 2 Side view; Figure 5 This utility model Figure 4 Enlarged view of point B in the middle.

[0017] Reference numerals: 100, protective mechanism; 200, arc extinguishing mechanism; 300, installation mechanism; 101, protective cover; 102, opening; 201, arc-blocking plate; 202, perforated metal plate; 203, metal mesh plate; 204, vent hole; 205, labyrinth-type vent hole; 301, mounting frame; 302, mounting plate; 303, spring plunger; 304, snap-fit ​​block; 305, extension plate; 306, snap-fit ​​groove; 307, positioning hole; 308, limiting plate; 309, mounting groove. Detailed Implementation

[0018] 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. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The following is combined with Figures 1-5 This invention describes an arc-proof terminal cover.

[0020] In one embodiment, an arc-proof terminal block cover includes: a protective mechanism 100, an arc-extinguishing mechanism 200, and a mounting mechanism 300. The protective mechanism 100 includes a cover body 101 and a through-hole 102 on the side of the cover body 101. The cover body 101 is located on the outer arc surface of the terminal block, and a labyrinth-type vent 205 is provided on the cover body 101. The arc-extinguishing mechanism 200 includes an arc-proof component for cooling and absorbing the arc, and the labyrinth-type vent 205... An arc-extinguishing component, formed by the labyrinthine vents 205 and located on the surface of the protective cover 101, forms an airflow channel for arc extinguishing. The arc-extinguishing component includes an arc-blocking plate 201, a perforated metal plate 202, and a metal mesh plate 203. The upper surface of the metal mesh plate 203 has several sets of vents 204. The metal mesh plate 203 is located above the terminal block, and the arc-blocking plate 201 is located above the metal mesh plate 203. The perforated metal plate 202 is located between the arc-blocking plate 201 and the metal mesh plate 203. One side of the protective cover 101 has an opening for the installation mechanism 300 to enter and exit. An extension plate 305 is provided along the lower edge of the opening, and positioning holes 307 are provided on the extension plate 305.

[0021] In this embodiment, the protective cover 101 is bolted to the outer arc surface of the terminal block, and an opening 102 is provided for wiring. A labyrinth-type air hole 205 is provided so that the airflow continuously collides and turns back in the labyrinth channel, which prolongs the residence time of the gas in the protective cover, giving it more opportunities to be cooled and deionized. At the same time, through the special structure of the labyrinth-type air hole 205, the gas exchange inside and outside the protective cover 101 is slowly regulated, avoiding sudden rises and falls in air pressure and maintaining the relative stability of the air pressure inside the protective cover 101. The arc-blocking plate 201 can initially block and cool the electric arc, and the perforated metal plate 202 uses its metal properties to further absorb the electric arc energy and change the electric arc path. The metal mesh plate 203 can filter and dissipate the residual electric arc more finely, thereby effectively cooling and absorbing the energy of the electric arc generated by the terminal block.

[0022] like Figure 2 , Figure 3 and Figure 5 As shown, the installation mechanism 300 of this utility model is disposed inside the protective cover 101 for quick disassembly and replacement of the arc protection component. The installation mechanism 300 includes a mounting frame 301, a snap-fit ​​block 304, a positioning component for positioning the mounting frame 301, and a limiting component for limiting the arc protection component. Two sets of snap-fit ​​blocks 304 are provided, and the two sets of snap-fit ​​blocks 304 are convex blocks. The two sets of snap-fit ​​blocks 304 are disposed on both sides of the mounting frame 301. The protective cover 101 has snap-fit ​​grooves 306 inside that correspond to the mounting frame 301 and the snap-fit ​​blocks 304.

[0023] In this embodiment, the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203 are disposed inside the mounting frame 301. Then, the mounting frame 301 is snapped into the snap-fit ​​groove 306 by the convex snap-fit ​​blocks 304 on both sides, thereby ensuring the stability of the mounting frame 301 after installation. At the same time, it is convenient to place the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203 inside the protective cover 101, and it is also convenient to replace and maintain the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203.

[0024] like Figure 2 , Figure 3 and Figure 5 As shown, the positioning assembly includes a mounting plate 302 and a spring plunger 303. The mounting plate 302 is fixedly disposed on the outside of the mounting frame 301, and the spring plunger 303 is disposed on the lower surface of the mounting plate 302. An extension plate 305 is fixedly disposed on the side of the protective cover 101, and a positioning hole 307 corresponding to the spring plunger 303 is opened on the extension plate 305. The limiting assembly includes a limiting plate 308 and a mounting post. The mounting post is fixedly disposed on the side of the mounting frame 301 away from the mounting plate 302, and the limiting plate 308 is rotatably disposed on one side of the mounting frame 301 through the mounting post.

[0025] In this embodiment, when the mounting frame 301 is inserted into the protective cover 101, the mounting plate 302 and the spring plunger 303 move with the mounting frame 301. After the mounting frame 301 is installed in place, the spring plunger 303 will be inserted into the corresponding positioning hole 307, thereby fixing the position of the mounting frame 301. At this time, the arc-blocking plate 201, the perforated metal plate 202 and the metal mesh plate 203 are located inside the mounting frame 301, and the arc-blocking plate 201, the perforated metal plate 202 and the metal mesh plate 203 are limited inside the mounting frame 301 by the side limiting plate 308, thereby ensuring that when the mounting frame 301 is pulled out, the arc-blocking plate 201, the perforated metal plate 202 and the metal mesh plate 203 will move out with it.

[0026] like Figure 2 , Figure 3 and Figure 5 As shown, the inner side of the mounting frame 301 is provided with mounting grooves 309 corresponding to the arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203. The arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 do not contact each other. The side of the mounting groove 309 closest to the mounting plate 302 is not connected to the outside, while the side of the mounting groove 309 furthest from the mounting plate 302 is connected to the outside. The limiting plate 308 is provided on the side of the arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203, and the limiting plate 308 is in contact with all of them.

[0027] In this embodiment, the arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 are respectively inserted into the corresponding mounting grooves 309, and the side of the mounting groove 309 near the limiting plate 308 is connected to the outside. Thus, when the arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 are damaged, they can be pulled out from the side of the mounting groove 309 near the limiting plate 308 for replacement. This avoids the need to replace the entire protective cover when the arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 are damaged, thereby reducing the cost of use and the difficulty of maintenance.

[0028] The working principle of this utility model is as follows: The arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 are inserted into the mounting frame 301 through the mounting groove 309. Then, the mounting frame 301 is driven into the protective cover 101 by the snap-fit ​​block 304, thereby installing the arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 inside the protective cover 101. The arc-blocking plate 201, the perforated metal plate 202, and the metal mesh plate 203 effectively cool and absorb the electric arc generated at the terminal block, and are engaged in the positioning hole 307 by the spring plunger 303. The mounting frame 301 is positioned, and the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203 inside the mounting frame 301 are limited by the limiting plate 308. When the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203 are damaged, the mounting frame 301 can be pulled out directly by the pull ring on the side of the mounting frame 301. Then, the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203 can be removed by rotating the limiting plate 308, which facilitates the replacement and maintenance of the arc-damping plate 201, the perforated metal plate 202, and the metal mesh plate 203.

[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An arc-proof terminal cover, characterized in that, include: The protective mechanism (100) includes a protective cover (101), with an opening (102) on one side of the protective cover (101) for wiring of the terminal block. The protective cover (101) is located on the outer arc surface of the terminal block, and a labyrinth-style air hole (205) is provided on the protective cover (101). Arc extinguishing mechanism (200), the arc extinguishing mechanism (200) includes an arc-proof component for cooling and absorbing the electric arc, the arc-proof component cooperating with a labyrinth vent (205) to extinguish the arc; The installation mechanism (300) is located inside the protective cover (101) and is used for quick disassembly and replacement of the anti-arc component.

2. The arc-proof terminal cover according to claim 1, characterized in that, The anti-arc component includes an arc-blocking plate (201), a perforated metal plate (202), and a metal mesh plate (203). The upper surface of the metal mesh plate (203) is provided with a plurality of ventilation holes (204). The metal mesh plate (203) is located above the terminal block, the arc-blocking plate (201) is located above the metal mesh plate (203), and the perforated metal plate (202) is located between the arc-blocking plate (201) and the metal mesh plate (203).

3. The arc-proof terminal cover according to claim 1, characterized in that, The installation mechanism (300) includes an installation frame (301), with snap-fit ​​blocks (304) on both sides of the installation frame (301), a positioning component for positioning at one end of the installation frame (301), and a limiting component for limiting the arc protection component inside the installation frame (301). There are two sets of snap-fit ​​blocks (304), and the two sets of snap-fit ​​blocks (304) are convex blocks. The protective cover (101) has snap-fit ​​grooves (306) inside that correspond to the installation frame (301) and the snap-fit ​​blocks (304).

4. The arc-proof terminal cover according to claim 3, characterized in that, The positioning component includes a mounting plate (302) and a spring plunger (303). The mounting plate (302) is fixedly disposed on the outside of the mounting frame (301), and the spring plunger (303) is disposed on the lower surface of the mounting plate (302). An extension plate (305) is fixedly disposed on the side of the protective cover (101), and the extension plate (305) is provided with a positioning hole (307) corresponding to the spring plunger (303).

5. The arc-proof terminal cover according to claim 3, characterized in that, The limiting component includes a limiting plate (308) and a mounting post. The mounting post is fixedly disposed on the side of the mounting frame (301) away from the mounting plate (302), and the limiting plate (308) is rotatably disposed on the side of the mounting frame (301) through the mounting post.

6. The arc-proof terminal cover according to claim 4 or 5, characterized in that, The mounting frame (301) has mounting grooves (309) on its inner side that correspond to the arc-blocking plate (201), the perforated metal plate (202) and the metal mesh plate (203), and the arc-blocking plate (201), the perforated metal plate (202) and the metal mesh plate (203) do not contact each other.

7. The arc-proof terminal cover according to claim 6, characterized in that, The side of the mounting groove (309) closest to the mounting plate (302) is not connected to the outside, while the side of the mounting groove (309) furthest from the mounting plate (302) is connected to the outside.

8. The arc-proof terminal cover according to claim 5, characterized in that, The limiting plate (308) is disposed on the side of the arc-blocking plate (201), the perforated metal plate (202) and the metal mesh plate (203), and the limiting plate (308) is in contact with the arc-blocking plate (201), the perforated metal plate (202) and the metal mesh plate (203).

9. The arc-proof terminal cover according to claim 1, characterized in that, The protective cover (101) has an opening on one side for the installation mechanism (300) to enter and exit.

10. The arc-proof terminal cover according to claim 9, characterized in that, An extension plate (305) is provided at the lower edge of the opening, and a positioning hole (307) is provided on the extension plate (305).

Images