Distribution box protection structure

Abstract

The utility model provides a distribution box protection structure, which comprises an arc extinguishing baffle plate, a baffle plate insertion strip is arranged at the bottom of the arc extinguishing baffle plate, an extension baffle plate is arranged at one end, far away from the baffle plate insertion strip, of the arc extinguishing baffle plate, the extension baffle plate comprises an extension plate body, the extension plate body is of a U-shaped structure, and the extension plate body is of a U-shaped structure. One end of the arc extinguishing baffle plate is inserted from the opening of the extension plate body and is connected with the inner walls of the two sides of the extension plate body through limiting convex blocks, and the two ends of the extension plate body are respectively provided with a side vertical elastic sheet; according to the utility model, through adjusting the height of the arc extinguishing baffle plate and changing the size of the arc extinguishing baffle plate according to on-site installation requirements, adjustment can be carried out according to different positions, interphase short circuit or interphase resistance reduction caused by sundries is prevented, the size of the arc extinguishing baffle plate is flexibly adjusted, two phases are effectively blocked, and the service life of the arc extinguishing baffle plate is prolonged. Electric arcs and flames generated when electrical equipment is short-circuited are isolated, and personnel and the surrounding environment are protected.

Description

Technical Field

[0001] This utility model belongs to the field of arc prevention for power distribution cabinets, specifically a protection structure for power distribution boxes. Background Technology

[0002] In the field of safe electricity use, distribution boxes play a crucial role. They house air switches and circuit breakers, the two core components of the distribution box and the primary electrical safeguards for safe electricity use. Molded case circuit breakers (MCCBs) are specifically designed to detect leakage current in the circuit. Once a leakage current exceeds a predetermined safe range (typically set at 30mA), the MCCB automatically cuts off the circuit within a very short time, effectively preventing electric shock accidents. This function makes MCCBs an indispensable piece of equipment for household electrical safety. To ensure safe and stable household electricity use, multiple branch switches and circuit breakers need to be installed in the distribution box according to different electricity areas and appliance types. Properly configuring the air switches and circuit breakers in the distribution box not only ensures safe and stable electricity use but also effectively extends the lifespan of electrical equipment.

[0003] In the distribution box, arc-extinguishing baffles need to be installed on the upper and lower ends of each molded case circuit breaker. If arc-extinguishing baffles are not installed, debris will fall onto the surface of the circuit breaker, forming a two-phase short circuit. The arc between the two phases will cause a short circuit. The arc-extinguishing baffles effectively block the arc and protect the safety of the distribution box.

[0004] Arc-extinguishing baffles come in various sizes, depending on the current. The size of the baffle to be installed also varies. During installation, different sizes of arc-extinguishing baffles need to be selected based on the surrounding environment of the molded case circuit breaker to isolate the two phases. Currently, arc-extinguishing baffles are a single, fixed structure, and different sizes can only be replaced according to actual use. This necessitates different sized arc-extinguishing baffles for different distribution box configurations.

[0005] In summary, this utility model provides a protection structure for a distribution box to solve the above-mentioned problems. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a distribution box protection structure to solve the problem in the prior art where different sizes of arc-extinguishing baffles need to be replaced according to actual use, which in turn requires different distribution box assembly situations and different types of arc-extinguishing baffles.

[0007] A distribution box protection structure includes an arc-extinguishing baffle. A baffle insert is installed at the bottom of the arc-extinguishing baffle. An extension baffle is provided at one end of the arc-extinguishing baffle away from the baffle insert. The extension baffle includes an extension plate body with a "U"-shaped structure. One end of the arc-extinguishing baffle is inserted through an opening in the extension plate body and connected to the inner walls of both sides of the extension plate body by limiting protrusions. Side-mounted spring pieces are respectively installed at both ends of the extension plate body. One end of the side-mounted spring piece is fixedly connected to the end of the extension plate body away from the opening, and the other end is equipped with a buckle strip. Locking side plates are respectively installed on both sides of the arc-extinguishing baffle. One side of the side-mounted spring piece is movably disposed within the locking side plate.

[0008] Furthermore, guide grooves are respectively provided on the middle of both sides of the arc-extinguishing baffle, and the limiting protrusions are installed on the inner walls of both ends of the extension plate near the opening, and are slidably connected with the guide grooves.

[0009] Furthermore, the locking side plate includes a side baffle, which is fixedly connected to one side of the arc-extinguishing baffle. An adjustment inner groove is provided on the side of the side baffle near the side-standing spring piece, and the adjustment inner groove is arranged along the vertical direction of the side baffle.

[0010] Furthermore, multiple snap-fit ​​slots are respectively provided on the inner wall of the adjusting inner channel, the snap-fit ​​strip is movably snapped in the snap-fit ​​slot, and the end of the side-standing spring piece away from the snap-fit ​​strip does not contact the adjusting inner channel.

[0011] Furthermore, the adjusting inner channel is located on the side of the side baffle away from the arc-extinguishing baffle, and the snap-fit ​​grooves are equidistantly arranged along the length direction of the adjusting inner channel.

[0012] Furthermore, the two buckle strips on the same side of the arc-extinguishing baffle are fixedly connected by a pressing linkage plate, which is set on the surface of the extension plate and has a gap with the extension plate.

[0013] Furthermore, the buckle strip has a right-angled triangular structure, and the bottom of the buckle strip is a right-angled surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, by setting an extension baffle and an arc-extinguishing baffle, installs an adjustable-height extension baffle on the surface of the arc-extinguishing baffle body. It can be used to adjust the length between the extension baffle and the arc-extinguishing baffle during the actual use needs of the staff, change the isolation range of the arc-extinguishing baffle, and provide adjustable isolation according to the installation situation around the circuit breaker, so as to more effectively protect the electrical appliances in the distribution box.

[0016] 2. This utility model, by setting a matching combination of buckle strip and buckle groove, and a pressing linkage plate set between the side upright springs, can facilitate the adjustment of the distance between the extension baffle and the arc extinguishing baffle from two directions, and can be retracted and extended.

[0017] 3. This utility model can adjust the height and size of the arc-extinguishing baffle according to the actual installation requirements, and can be adjusted for different positions to prevent debris from causing phase-to-phase short circuits or reducing phase-to-phase resistance. The size of the arc-extinguishing baffle can be flexibly adjusted to effectively block the arc and flame generated when electrical equipment is short-circuited, thus protecting personnel and the surrounding environment. Attached Figure Description

[0018] Figure 1 This is a perspective view of the utility model;

[0019] Figure 2 This is a perspective view of the extended version of this utility model;

[0020] Figure 3 This is a perspective view of the extended baffle of this utility model;

[0021] Figure 4 This is a three-dimensional view of the limiting protrusion of this utility model.

[0022] In the picture:

[0023] 1. Arc-extinguishing baffle;

[0024] 2. Extension baffle; 201. Extension plate; 202. Side spring clip; 203. Buckle strip; 204. Limiting protrusion;

[0025] 3. Press the linkage plate;

[0026] 4. Guide groove;

[0027] 5. Baffle insert;

[0028] 6. Locking side plate; 601. Side baffle; 602. Buckle groove. Detailed Implementation

[0029] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0030] like Figures 1-4As shown, this utility model provides a distribution box protection structure, including an arc-extinguishing baffle 1. A baffle insert 5 is installed at the bottom of the arc-extinguishing baffle 1. An extension baffle 2 is provided at one end of the arc-extinguishing baffle 1 away from the baffle insert 5. The extension baffle 2 includes an extension plate body 201, which has a "U" shaped structure. One end of the arc-extinguishing baffle 1 is inserted through the opening of the extension plate body 201 and is connected to the inner walls of both sides of the extension plate body 201 by limiting protrusions 204. Side spring pieces 202 are respectively installed at both ends of the extension plate body 201. One end of the side spring piece 202 is fixedly connected to the end of the extension plate body 201 away from the opening, and the other end is equipped with a buckle strip 203. Locking side plates 6 are respectively installed on both sides of the arc-extinguishing baffle 1, and one side of the side spring piece 202 is movably disposed in the locking side plate 6.

[0031] As one embodiment of this utility model, the arc-extinguishing baffle 1 has guide grooves 4 respectively opened in the middle of both sides, and the limiting protrusions 204 are installed on the inner walls of both ends of the extension plate 201 near the opening, and are slidably connected with the guide grooves 4.

[0032] As one embodiment of the present invention, the locking side plate 6 includes a side baffle 601, which is fixedly connected to one side of the arc extinguishing baffle 1. Adjustment inner channels are respectively opened on the side of the side baffle 601 near the side upright spring piece 202, and the adjustment inner channels are arranged along the vertical direction of the side baffle 601.

[0033] As one embodiment of this utility model, multiple snap-fit ​​slots 602 are respectively opened on the inner wall of the adjusting inner channel, and the snap-fit ​​strip 203 is movably snapped in the snap-fit ​​slot 602. The end of the side spring piece 202 away from the snap-fit ​​strip 203 does not contact the adjusting inner channel.

[0034] As one embodiment of this utility model, the adjusting inner channel is set on the side of the side baffle 601 away from the arc extinguishing baffle 1, and the snap-fit ​​groove 602 is set at equal intervals along the length direction of the adjusting inner channel.

[0035] As one embodiment of this utility model, the two buckle strips 203 on the same side of the arc extinguishing baffle 1 are fixedly connected by a pressing linkage plate 3. The pressing linkage plate 3 is set on the surface of the extension plate 201 and has a gap with the extension plate 201.

[0036] As one embodiment of this utility model, the buckle strip 203 has a right-angled triangular structure, and the bottom of the buckle strip 203 is a right-angled surface.

[0037] Specific working principle:

[0038] The arc-extinguishing baffle 1 is inserted into the upper and lower ends of the molded case circuit breaker using the baffle insert 5 at the bottom. By pulling the extension baffle 2, the extension plate 201 slides on the surface of the arc-extinguishing baffle 1. The side spring piece 202 squeezes the buckle strip 203 to move and engage in the buckle groove 602. When it moves to the target height, the buckle strip 203 is engaged in the buckle groove 602 at that position. Then, it is stably engaged in the buckle groove 602 by the elasticity of the side spring piece 202.

[0039] When retracting, press the pressing linkage plates 3 on both sides at the same time. The pressing linkage plates 3 will drive the buckle strips 203 at both ends away from the buckle groove 602, and the extension plate 201 can be slid down to reduce the height.

[0040] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A protection structure for a distribution box, comprising an arc-extinguishing baffle (1), wherein a baffle insert (5) is installed at the bottom of the arc-extinguishing baffle (1), characterized in that: An extension baffle (2) is provided at one end of the arc-extinguishing baffle (1) away from the baffle insert (5). The extension baffle (2) includes an extension plate body (201), which is a "U" shaped structure. One end of the arc-extinguishing baffle (1) is inserted through the opening of the extension plate body (201) and connected to the inner walls of both sides of the extension plate body (201) by a limiting protrusion (204). Side spring pieces (202) are installed at both ends of the extension plate body (201). One end of the side spring piece (202) is fixedly connected to the end of the extension plate body (201) away from the opening, and the other end is equipped with a buckle strip (203). Locking side plates (6) are installed on both sides of the arc-extinguishing baffle (1). One side of the side spring piece (202) is movably disposed in the locking side plate (6).

2. The distribution box protection structure as described in claim 1, characterized in that: The arc-extinguishing baffle (1) has guide grooves (4) in the middle of both sides. The limiting protrusions (204) are installed on the inner walls of both ends of the extension plate (201) near the opening and are slidably connected with the guide grooves (4).

3. The distribution box protection structure as described in claim 1, characterized in that: The locking side plate (6) includes a side baffle (601), which is fixedly connected to one side of the arc extinguishing baffle (1). An adjustment inner channel is provided on one side of the side baffle (601) near the side spring (202), and the adjustment inner channel is arranged in the vertical direction of the side baffle (601).

4. The distribution box protection structure as described in claim 3, characterized in that: Multiple snap-fit ​​slots (602) are respectively provided on the inner wall of the adjusting inner channel. The snap-fit ​​strip (203) is movably snapped in the snap-fit ​​slot (602). The end of the side spring piece (202) away from the snap-fit ​​strip (203) does not contact the adjusting inner channel.

5. The distribution box protection structure as described in claim 4, characterized in that: The adjusting inner channel is located on one side of the side baffle (601) away from the arc extinguishing baffle (1), and the snap-fit ​​groove (602) is equidistantly arranged along the length direction of the adjusting inner channel.

6. The distribution box protection structure as described in claim 1, characterized in that: The two buckle strips (203) on the same side of the arc extinguishing baffle (1) are fixedly connected by a pressing linkage plate (3). The pressing linkage plate (3) is set on the surface of the extension plate (201) and there is a gap between it and the extension plate (201).

7. The distribution box protection structure as described in claim 1, characterized in that: The buckle strip (203) has a right-angled triangle structure, and the bottom of the buckle strip (203) is a right-angled surface.

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