CN218471861U - Safety protection cover for miniature circuit breaker - Google Patents

Abstract

The utility model discloses a safety protection cover for a miniature circuit breaker, which is characterized in that it comprises a C-shaped housing and two U-shaped slots, the two U-shaped slots are arranged on both sides of the C-shaped housing in parallel, and two The openings of the U-shaped card slots are set opposite to each other. The C-shaped housing is integrally formed with two U-shaped card slots. The C-shaped housing is matched with the miniature circuit breaker. The edges are matched, and an interference fit is formed between the miniature circuit breaker safety cover and the miniature circuit breaker. Beneficial effects of the utility model: the utility model solves the defect that the miniature circuit breaker cannot implement the safety warning and protection functions after the power is turned off, and can effectively protect the personal safety of the relevant electrical maintenance personnel, and the utility model has a light and handy body, easy to use Convenient, easy to manufacture, cheap, easy to promote and so on.

Description

Miniature circuit breaker safety cover

technical field

The utility model belongs to an auxiliary safety protection device for a miniature circuit breaker.

Background technique

The miniature circuit breaker involved in the utility model includes an air switch, an electric leakage protection switch and the like. Among them, as a kind of low-voltage circuit breaker, the air switch is widely used in the power distribution circuit of building electrical and low-voltage power distribution devices. Through this part, the electrical circuit opening and closing functions and short circuit, overload, low voltage and other protections can be realized. Function; leakage protection switch is based on the air switch to increase the leakage protection function. The air switch and leakage protection switch made according to the unified standard specification have similarity in appearance and size.

In the "electricity-related" work, the work must be carried out in accordance with the corresponding electrical safety operating procedures. For example, when performing maintenance work on electrical lines or electrical equipment, on the basis of normal opening and power-off of the switch, it is generally necessary to implement safety-enhancing operations such as "hanging warning signs" or "locking" at the switch position procedures to ensure the personal safety of those involved. If there is no such safety guarantee link, there may be some special circumstances (for example, the location of the maintenance work may be far away from the location of the power-off switch, and non-maintenance operators or other people who do not know may mistakenly believe that the power-off switch is automatically tripped Random re-closing) of "wrong power transmission" and the resulting hidden dangers. At present, according to the electrical safety operation regulations, when the electrical lines and equipment distributed by the (standard) low-voltage distribution cabinet are powered off for maintenance, the electrical personnel will generally hang a warning sign on the switch handle of the corresponding switch cabinet panel or perform a locking procedure ( After the switch is in the power-off position and locked, the key will be kept by the maintenance operator), so as to fully guarantee the safety of the maintenance operator and prevent possible safety loopholes during the maintenance process.

However, for a large number of distribution boxes used in construction sites and some facilities or places that directly "expose" the use of air switches and leakage protection switches, due to the structure of the distribution box, air switch or leakage protection switch, it is impossible to directly implement " Tagout" or "lockout" working procedures. Therefore, after the switch is powered off, some self-made "simple" warning signs are used, while more of these safety measures are directly ignored, and no corresponding safety warning or protection measures are implemented. In the "electricity-related" work, there have been repeated electrical safety accidents caused by this.

Based on this situation, there is an urgent need for a protective cover that can directly operate against the air switch or leakage protection switch in the common distribution box, meet the electrical safety operation regulations, and can further improve the safety protection requirements of the electrical maintenance operation process. When the air switch or leakage protection switch is in the opening state due to line or equipment maintenance, the use of this device can play an obvious role in safety warning and protection, and can effectively prevent the air switch or leakage protection switch from being caused by artificial "wrong power supply". electrical safety accidents.

Contents of the invention

Aiming at the shortcomings in the application of miniature circuit breakers, the utility model provides a safety protection cover specially used for miniature circuit breakers, which can solve the problem of implementing corresponding safety protection measures for miniature circuit breakers after opening (power failure), thereby preventing possible human errors Operation hidden dangers, to ensure the safety of electrical maintenance workers.

For realizing this purpose, the utility model adopts technical scheme to be:

The miniature circuit breaker safety protection cover includes a C-shaped housing 1 and two U-shaped card slots 2, the two U-shaped card slots 2 are arranged on both sides of the C-shaped housing 1 in parallel, and the two U-shaped card slots The openings of 2 are oppositely arranged, the C-shaped housing 1 is integrally formed with two U-shaped card slots 2, the C-shaped housing 1 is matched with the miniature circuit breaker, and the two U-shaped card slots 2 are respectively connected with the miniature circuit breaker The upper and lower edges are matched, and an interference fit is formed between the miniature circuit breaker safety protection cover and the miniature circuit breaker. When the safety protection cover is snapped into the miniature circuit breaker, the inner opening of the safety protection cover expands, and a clamping force is generated on the contact surface between the safety protection cover and the miniature circuit breaker to ensure that the safety protection cover does not loosen.

The length of the miniature circuit breaker safety protection cover matches the width of the miniature circuit breakers placed side by side; the miniature circuit breaker safety protection cover is made of high toughness plastic material; the inner wall of the C-shaped housing 1 is provided with radially extending reinforcing ribs 3 . Warning characters and/or warning icons are arranged on the panel of the C-shaped housing 1 .

Beneficial effects of the utility model: the utility model solves the defect that the miniature circuit breaker cannot implement the safety warning and protection functions after the power is turned off, and can effectively protect the personal safety of the relevant electrical maintenance personnel, and the utility model has a light and handy body, easy to use Convenient, easy to manufacture, cheap, easy to promote and so on.

Description of drawings

Fig. 1 is a three-dimensional diagram of a miniature circuit breaker safety cover;

Figure 2 Three-dimensional diagram of miniature circuit breaker;

Fig. 3 is a schematic diagram of the use of the miniature circuit breaker safety protection cover applied to the miniature circuit breaker.

In Fig. 1, 1-C-shaped shell; 2-U-shaped slot; 3-reinforcing rib;

In Fig. 3, Ⅰ-miniature circuit breaker safety protection cover; Ⅱ-miniature circuit breaker; Ⅲ-support.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is introduced in detail.

Miniature circuit breaker safety cover, as shown in Figure 1,

The miniature circuit breaker safety protection cover includes a C-shaped housing 1 and two U-shaped card slots 2, the two U-shaped card slots 2 are arranged on both sides of the C-shaped housing 1 in parallel, and the two U-shaped card slots The openings of 2 are oppositely arranged, the C-shaped housing 1 is integrally formed with two U-shaped card slots 2, the C-shaped housing 1 is matched with the miniature circuit breaker, and the two U-shaped card slots 2 are respectively connected with the miniature circuit breaker The upper and lower edges match, that is, the distance between the two edges of the U-shaped card slot 2 (see dimension A in Figure 1) is slightly smaller than the distance between the upper and lower edges of the miniature circuit breaker (see dimension a in Figure 2), and the miniature circuit breaker An interference fit is formed between the safety protection cover and the miniature circuit breaker. When the safety protection cover is snapped into the miniature circuit breaker, as shown in Figure 3, the inner opening of the safety protection cover expands, and the contact between the safety protection cover and the miniature circuit breaker The surface produces a clamping force so that the safety cover does not loosen.

The length of the miniature circuit breaker safety protection cover (see dimension D in Figure 1) matches the width of miniature circuit breakers placed side by side (dimension d in Figure 2); by changing the length dimension of the C-shaped housing 1 ( Dimension D) shown in Figure 1, matches multiple miniature circuit breakers placed side by side.

The miniature circuit breaker safety cover is made of high-toughness plastic material; the inner wall of the C-shaped housing 1 is provided with radially extending reinforcing ribs 3 . Warning characters and/or warning icons are arranged on the panel of the C-shaped housing 1 .

Fig. 3 is a schematic diagram of the use of the miniature circuit breaker safety protection cover. The miniature circuit breaker II is installed on the bracket III, and the miniature circuit breaker safety protection cover I can be clamped on the miniature circuit breaker II. Due to the interference fit between the miniature circuit breaker safety cover I and the miniature circuit breaker II, when the safety cover I is snapped into the miniature circuit breaker II, the inner opening of the safety cover I expands, and the safety cover I and the The contact surface of the miniature circuit breaker II produces a clamping force to ensure that the safety cover I does not loosen.

When in use, the U-shaped card slot 2 is directly clamped on the upper and lower edges of the front of the miniature circuit breaker, and the C-shaped housing 1 covers the handle part of the front of the switch as a whole. The safety protection cover and obvious warning signs ensure that the on-site personnel will not close the switch directly or easily touch the switch.

The above-mentioned embodiment is the preferred embodiment of the present utility model, but the present utility model is not limited to the above-mentioned embodiment, without departing from the essential content of the present utility model, any obvious improvement that those skilled in the art can make, Replacement or modification all belong to the protection scope of the present utility model.

Claims (5)

1. Miniature circuit breaker safety cover, its characterized in that includes 1C type casing and 2U type draw-in grooves, 2U type draw-in groove parallel locate C type casing both sides, and the opening of 2U type draw-in grooves sets up relatively, C type casing and 2U type draw-in groove integrated into one piece, C type casing and miniature circuit breaker phase-match, 2U type draw-in grooves respectively with miniature circuit breaker border phase-match from top to bottom, form interference fit between miniature circuit breaker safety cover and the miniature circuit breaker.

2. The miniature circuit breaker safety shield of claim 1, wherein the miniature circuit breaker safety shield has a length that matches a width of miniature circuit breakers positioned side-by-side.

3. The miniature circuit breaker safety shield of claim 1 wherein the miniature circuit breaker safety shield is a high toughness plastic material.

4. The safety shield for miniature circuit breakers of claim 1 wherein the inner wall of the C-shaped housing is provided with radially extending ribs.

5. The safety shield of claim 1, wherein the panel of the C-shaped housing is provided with warning characters and/or warning icons.

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