CN216928464U - An integrated arc suppression cover and supporting structure - Google Patents

Abstract

The utility model discloses an integrated arc extinction cover cap and a matched structure, and the integrated arc extinction cover cap comprises an arc extinction cover cap, a bottom plate, a base, an arc extinction chamber, a secondary terminal, a first screw, a first square nut, a second screw and a second square nut. Through the up-down through type fastening design of the first screw, the problem of exposure of the arc extinguish chamber screw is solved. The utility model discloses a can effectively solve the easy difficult problem that leads to unable dismantlement, the easy damaged of working of plastics in the arc extinction shroud, arc extinction shroud and explosion chamber installation of burning of explosion chamber set screw.

Description

An integrated arc suppression cover and supporting structure

technical field

The utility model relates to the technical field of low-voltage electrical components and equipment, in particular to an integrated arc suppression cover and a matching structure of a universal circuit breaker.

Background technique

The function of the universal circuit breaker in the distribution line is mainly to connect and disconnect the circuit under abnormal conditions such as normal and overload or short circuit. When there is a short-circuit fault in the line, the contact of the circuit breaker should act quickly to disconnect the main circuit to avoid damage to the equipment. As is well known in the industry, the opening of the moving contact of a circuit breaker under current-carrying conditions will generate an arc. Especially when doing the breaking test, due to the huge arc energy, the outlet pressure of the arc extinguishing chamber also increases, and the arc extinguishing chamber will be damaged and cannot be opened. In the existing solution, many arc-extinguishing chambers are separately fixed on the base and the bottom plate by screws, and an arc-extinguishing cover is also designed above the arc-extinguishing chamber. The arc extinguishing cover is divided into two parts, the top is the metal frame, and the bottom is the insulating parts inside the frame. After the two are put together, they are installed above the arc extinguishing chamber, and there are other solutions.

For example, the patent publication number CN213483692U discloses an arc suppression cover and a circuit breaker with the arc suppression cover. It mainly includes a main body of an arc suppression cover, a metal mesh plate slot and a metal mesh. The front of the main body of the arc suppression cover is provided with a main flow hole; the metal mesh plate slot is provided with a sub flow hole, and the sub flow guide The holes are arranged corresponding to the main flow holes. The arc suppression cover of the utility model has excellent functions of filtering metal particles and eliminating ionization.

However, in the actual operation process at present, the above-mentioned patents and the prior art still have the following deficiencies: because the screws for fixing the arc extinguishing chamber are exposed in the arc extinguishing cover without insulation treatment, the surface of the head will be burned by the electric arc, resulting in The arc-extinguishing chamber cannot be disassembled; the arc-extinguishing cover is a component with a complex structure, and the internal insulating parts are easily damaged during the breaking test; the installation of the arc-extinguishing chamber and the arc-extinguishing cover is cumbersome because they are separate and independent. Install the arc chute screw, and then install the arc chute screw, the efficiency is low.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides an integrated arc suppression cover and a matching structure to solve the above problems.

In order to achieve the above purpose, the present invention is realized through the following technical solutions:

An integrated arc-extinguishing cover and supporting structure is characterized in that it comprises an arc-extinguishing cover, a bottom plate, a base, an arc-extinguishing chamber, a secondary terminal, a screw, a square nut, a screw two, and a square nut, and the The arc extinguishing cover is installed behind the secondary terminal, the top of the arc extinguishing cover is provided with screw holes and is installed above the arc extinguishing chamber, the base is installed in front of the bottom plate, and the top of the arc extinguishing chamber has a horizontal opening. The screw holes are installed in the upper space formed by the base and the bottom plate.

Preferably, the arc suppression cover includes a cross groove part and an air outlet part, the cross groove parts are respectively arranged at both ends of the front end of the top of the arc suppression cover, and the arc suppression cover is made of insulating plastic.

Preferably, the evacuation air passages are arranged on the top plane and the rear plane of the arc extinguishing cover.

Preferably, the lower end of the air outlet provided on the top plane of the arc extinguishing cover and the inner side of the air outlet provided on the rear plane of the arc extinguishing cover are both sharp-angled.

Preferably, the second square nut is arranged in the cross groove on the arc suppression cover.

Preferably, the bottom plate is provided with an arc suppression cover nut slot 1.

Preferably, the base is provided with two arc suppression cover nut slots.

Preferably, the square nut is arranged in the nut groove of the arc suppression cover.

Preferably, the first square nut is arranged in the second groove of the arc suppression cover nut.

Preferably, the secondary terminal is fastened to the arc suppression cover by two screws and two square nuts.

Compared with the prior art, the utility model has the beneficial effects that: the screw one is designed with an upper and lower through-type fastening. On the one hand, the entire screw one is wrapped by an insulating member, which avoids the exposure of the mounting screw in the arc extinguishing chamber and also prevents the screw from being damaged. Arc burning, on the other hand, due to the integrated design, it is no longer necessary to fasten the two parts of the arc suppression cover assembly, which simplifies the installation method and improves the installation efficiency; At the same time, the strength of the ribs is increased, and it is not damaged after the breaking test.

Description of drawings

Fig. 1 is the left rear perspective view of the utility model, the structural schematic diagram of the completed installation;

2 is a schematic diagram of an explosion structure from a left rear perspective of the present utility model;

3 is a cross-sectional view of the air outlet of the arc suppression cover of the utility model;

4 is a schematic diagram of the structure of the base plate of the present invention;

Among them, 1- arc suppression cover, 2- base plate, 3- base, 4- arc extinguishing chamber, 5- secondary terminal, 6- screw one, 7- square nut one, 8- screw two, 9- square nut 2. 101-Cross groove, 102- Air outlet, 201-Arc suppression cover nut slot 1, 301-Arc suppression cover nut slot 2.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

This embodiment provides a technical solution: as shown in the figure, the integrated arc extinguishing cover and supporting structure of the present invention include an arc extinguishing cover 1, a bottom plate 2, a base 3, an arc extinguishing chamber 4, a secondary Terminal 5, screw 1 6, square nut 1 7, screw 2 8, square nut 2 9, the base 3 is installed in front of the bottom plate 2 with screws, and there are three arc suppression cover nut slots 1 201 in front of the top of the base 3 , three arc suppression cover nut grooves 2 301 are arranged behind the top of the bottom plate 2, and six square nuts 1 7 are inserted into the three arc suppression cover nut grooves 1 201 and three arc suppression cover nut grooves 2 301 in succession. Arrange the three arc extinguishing chambers 4 side by side into the upper space formed by the bottom plate 2 and the base 3. There are a total of six screw holes on the top and rear of the three arc extinguishing chambers 4, and the six screw holes are pressed on the three arc extinguishing cover nuts. Slot one 201 and three arc suppression cover nuts slot two 301, place the arc suppression cover 1 above the three arc suppression chambers 4, and there are six deep screw holes in the front and rear of the top of the arc suppression cover 1. The bottom is aligned with the screw holes on the top of the arc extinguishing chamber 4, and six screws 1 6 are used to penetrate the arc extinguishing cover cover 1, the arc extinguishing chamber 4 and the nut groove 1 201 and the arc extinguishing cover nut groove installed in the arc extinguishing cover cover from above. The six square nuts one 7 in the second 301 are fastened; the material of the arc suppression cover 1 is an insulating plastic as a whole, specifically unsaturated polyester glass fiber reinforced molding compound DMC, and the arc suppression cover 1 includes a cross groove 101 part and the air outlet 102 part, the cross slot 101 is respectively set at both ends of the front end of the top of the arc suppression cover (1), put the two square nuts 2 9 into the cross slot 101 vertically from top to bottom, put the secondary terminal 5 The screw holes are close to the cross groove 101 on the upper part of the front side of the arc suppression cover 1 from the front, and are fastened with two screws 28; the top plane and the rear plane of the arc suppression cover 1 are each provided with an exhaust air passage. 102, an air outlet is left between the air outlets 102, and the lower end of the air outlet 102 arranged on the top plane of the arc suppression cover 1 and the inner side of the air outlet 102 arranged on the rear plane of the arc suppression cover 1 are all sharp-angled. .

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (10)

1. The utility model provides an integrated form arc extinction shroud and supporting structure which characterized in that: including arc extinction shroud (1), bottom plate (2), base (3), explosion chamber (4), secondary terminal (5), screw (6), square nut (7), two (8) of screw, square nut two (9), install at secondary terminal (5) rear arc extinction shroud (1), open at arc extinction shroud (1) top has the screw hole and installs in explosion chamber (4) top, install bottom plate (2) the place ahead in base (3), open at arc extinction shroud (4) top has the horizontally screw hole and installs the upper portion space that forms at base (3) and bottom plate (2), and screw (6) are successively run through arc extinction shroud (1), explosion chamber (4) and the fastening of square nut (7) in bottom plate (2) and base (3).

2. An integrated arc extinguishing cover and mating structure as claimed in claim 1, wherein: the arc extinction shroud (1) includes cross recess (101) position and gas outlet channel (102) position, and cross recess (101) position sets up respectively at arc extinction shroud (1) top front end both ends, and arc extinction shroud (1) material is insulating plastics.

3. An integrated arc extinguishing cover and mating structure as set forth in claim 2, wherein: the gas outlet channel (102) is arranged on the top plane and the rear plane of the arc extinguishing cover (1).

4. An integrated arc extinguishing cover and mating structure as set forth in claim 2, wherein: the lower end of the gas outlet channel (102) arranged on the top plane of the arc extinction cover cap (1) and the inner side of the gas outlet channel (102) arranged on the rear plane of the arc extinction cover cap (1) are in a sharp-angle shape.

5. An integrated arc extinguishing cover and mating structure as set forth in claim 2, wherein: the second square nut (9) is arranged in a cross groove (101) on the arc extinguishing cover (1).

6. An integrated arc extinguishing cover and mating structure as claimed in claim 1, wherein: and a first arc extinction cover nut groove (201) is formed in the bottom plate (2).

7. An integrated arc extinguishing cover and mating structure as claimed in claim 1, wherein: and an arc extinguishing cover nut groove II (301) is arranged on the base (3).

8. An integrated arc extinguishing cover and mating structure as claimed in claim 6, wherein: the square nut I (7) is arranged in the arc extinction cover nut groove I (201).

9. An integrated arc extinguishing cover and mating structure as claimed in claim 7, wherein: the square nut I (7) is arranged in the arc extinction cover nut groove II (301).

10. An integrated arc extinguishing cover and mating structure as claimed in claim 1, wherein: and the secondary terminal (5) is fastened with the arc extinguishing cover (1) through a second screw (8) and a second square nut (9).

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