CN219738864U - Arc extinguishing structure - Google Patents

Abstract

The utility model belongs to the technical field of piezoelectric devices, and discloses an arc extinguishing structure, which comprises an insulating plate and arc extinguishing grid plates, wherein the insulating plate is provided with two arc extinguishing grid plates at intervals along a first direction; the arc extinguishing bars piece sets up between two insulation boards and is provided with a plurality ofly along the second direction interval, is formed with a plurality of arc extinguishing passageway between a plurality of arc extinguishing bars pieces and the two insulation boards, and the first end of arc extinguishing bars piece is provided with the open slot, and the open slot has first face and second face, and first face and second face pass through the arc surface transition, and the arc surface skew arc extinguishing bars piece sets up along the center of first direction, and the rotatory 180 setting of adjacent arc extinguishing bars piece. According to the arc extinguishing structure provided by the utility model, the adjacent arc extinguishing gate sheets are rotated 180 degrees to enable the arc surfaces of the adjacent arc extinguishing gate sheets to be staggered along the first direction, so that the arc can be further elongated when the arc contacts with the arc surfaces, and the arc extinguishing capability is effectively improved.

Description

Arc extinguishing structure

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to an arc extinguishing structure.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. When the contacts of the circuit breaker are opened, an arc is generated, the gas inside the circuit breaker is expanded by the high temperature generated by the arc, and the arc flows and stretches along with the expanded gas and is eliminated through the arc extinguishing structure.

In the prior art, the arc is limited by the structure of the arc extinguishing structure, and the arc elongation length is limited, so that the arc extinguishing capability of the arc extinguishing structure is limited. Therefore, an arc extinguishing mechanism is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide an arc extinguishing structure which can enable an arc to have a longer elongation and effectively improve the arc extinguishing capability.

To achieve the purpose, the utility model adopts the following technical scheme:

provided is an arc extinguishing structure, the arc extinguishing structure including:

the insulating plates are arranged at intervals along the first direction;

the arc extinguishing bars piece sets up two between the insulation board and be provided with a plurality ofly along the second direction interval, a plurality of arc extinguishing bars piece with two be formed with a plurality of arc extinguishing passageway between the insulation board, the first end of arc extinguishing bars piece is provided with the open slot, the open slot has first face and second face, first face with the second face passes through the arc surface transition, the arc surface skew the arc extinguishing bars piece is followed the center setting of first direction, and is adjacent the arc extinguishing bars piece rotatory 180 sets up so that is adjacent the arc surface of arc extinguishing bars piece is followed the crisscross setting of first direction.

Optionally, a plurality of first fixing portions are disposed on two sides of the arc extinguishing gate along the first direction, and the first fixing portions are riveted with the insulating plate.

Optionally, the device further comprises an arc striking plate arranged between the two insulating plates.

Optionally, a plurality of second fixing parts are arranged on two sides of the arc striking plate along the first direction, and the second fixing parts are riveted with the insulating plate.

Optionally, the method further comprises:

the arc extinguishing bracket is arranged between the two insulating plates and is positioned at the second end of the arc extinguishing grid plate;

the arc extinction board is arranged on the arc extinction bracket, and a plurality of exhaust holes are formed in the arc extinction board.

Optionally, a plurality of arc suppression plates are stacked, and two adjacent arc suppression plates are rotated 180 degrees to enable the exhaust holes of the two adjacent arc suppression plates to be staggered.

Optionally, one side of the arc suppression plate along the first direction is provided with a stop bar, the other side is provided with a positioning surface, and the stop bar of one of the two adjacent arc suppression plates is attached to the positioning surface of the other one.

Optionally, the arc suppression plate is provided with a groove, and the bottom of the groove is provided with a plurality of exhaust holes.

Optionally, the arc suppression support is provided with the mounting groove, the tank bottom of mounting groove is provided with the through hole, the mounting groove is followed all be provided with spacing on two medial surfaces of second direction, the arc suppression board set up in the mounting groove and be located spacing with between the tank bottom of mounting groove.

Optionally, the insulation board is followed the second direction is provided with a plurality of locating holes, arc extinction support is followed the both sides of first direction all are provided with a plurality of location archs, the location arch peg graft one by one in the locating hole is in order to realize fixed connection between arc extinction support and the two the insulation board.

Optionally, the method further comprises:

the cover plate is arranged at the end part of the arc extinction bracket, which is opposite to the arc extinction grid plate;

the two gas generating pieces are respectively sleeved on the branch parts at two sides of the open slot;

and the fixing piece is used for fixing the gas generating piece by penetrating the gas generating piece and the arc extinguishing grid piece.

The beneficial effects are that:

according to the arc extinguishing structure provided by the utility model, the arc is cut off at the opening groove at the first end of the arc extinguishing grating sheet and is transferred and eliminated towards the second end of the arc extinguishing grating sheet through the arc extinguishing channel, and the adjacent arc extinguishing grating sheets are rotated for 180 degrees, so that the arc surfaces of the adjacent arc extinguishing grating sheets are staggered along the first direction, and further the arc can be further lengthened when the arc contacts with the arc surfaces, and the arc extinguishing capability is effectively improved.

Drawings

Fig. 1 is an exploded schematic view of a part of an arc extinguishing structure provided by the utility model;

fig. 2 is a schematic structural view of an arc extinguishing gate sheet provided by the utility model;

fig. 3 is a schematic structural diagram of a part of an arc extinguishing structure provided by the utility model;

fig. 4 is a schematic structural diagram of the arc suppression plate provided by the utility model;

FIG. 5 is a schematic view of the arc extinguishing bracket provided by the utility model;

fig. 6 is a schematic view of an arc extinguishing structure according to the present utility model;

FIG. 7 is a schematic view of the structure of the gas generating member according to the present utility model;

fig. 8 is a schematic view of another view angle structure of the arc extinguishing structure provided by the present utility model.

In the figure:

100. an insulating plate; 110. positioning holes; 120. a positioning groove;

200. arc extinguishing grid plates; 210. an open slot; 211. a first face; 212. a second face; 213. an arc surface; 220. a first fixing portion; 230. a second perforation;

300. an arc striking plate; 310. a second fixing portion;

400. arc extinguishing bracket; 410. a mounting groove; 420. a through hole; 430. a limit bar; 440. positioning the bulge; 441. chamfering; 450. a positioning part;

500. an arc extinction board; 510. an exhaust hole; 520. a barrier strip; 530. a positioning surface; 540. a groove;

600. a gas generating member; 610. a partition plate; 611. a first perforation; 620. shaping the bulge;

700. a fixing member;

800. a cover plate; 810. and (5) a strip hole.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1 to 3, the present embodiment provides an arc extinguishing structure including an insulating plate 100 and an arc extinguishing grid 200. Wherein, the insulating plate 100 is provided with two at intervals along the first direction; the arc extinguishing bars 200 are disposed between the two insulating plates 100 and are disposed at intervals along the second direction, a plurality of arc extinguishing channels are formed between the plurality of arc extinguishing bars 200 and the two insulating plates 100, the first ends of the arc extinguishing bars 200 are provided with open slots 210, the open slots 210 are provided with a first surface 211 and a second surface 212, the first surface 211 and the second surface 212 are transited through arc surfaces 213, the arc surfaces 213 deviate from the center of the arc extinguishing bars 200 along the first direction, and the adjacent arc extinguishing bars 200 are rotated 180 ° to enable the arc surfaces 213 of the adjacent arc extinguishing bars 200 to be staggered along the first direction. In fig. 1, the a direction is the first direction, and the b direction is the second direction. Preferably, the first direction and the second direction are disposed perpendicular to each other. Of course, the first direction and the second direction may also have other angular relationships, which are not limited herein. Specifically, the arc extinguishing structure is arranged in the circuit breaker.

In this embodiment, the arc is cut off at the opening slot 210 at the first end of the arc-extinguishing grid plate 200 and transferred to the second end of the arc-extinguishing grid plate 200 via the arc-extinguishing channel, and the arc surfaces 213 of the adjacent arc-extinguishing grid plates 200 are staggered along the first direction due to the 180 ° rotation of the adjacent arc-extinguishing grid plates 200, and the arc surfaces 213 of the opening slot 210 are closest to the second end of the arc-extinguishing grid plate 200, so that the arc can be further elongated when contacting the arc surfaces 213, thereby effectively improving the arc-extinguishing capability.

Preferably, the angle a between the first face 211 and the second face 212 is an acute angle. Illustratively, the included angle a between the first face 211 and the second face 212 is any angle between 45 ° and 75 °.

Specifically, the arc extinguishing gate 200 is provided with a plurality of first fixing portions 220 at both sides in the first direction, and the first fixing portions 220 are riveted with the insulating plate 100. In this embodiment, the insulating plate 100 is provided with a first fixing hole corresponding to the first fixing portion 220, the first fixing portion 220 is inserted into the first fixing hole and deforms the first fixing portion 220 in an extrusion manner to realize riveting, the connection is stable, positioning and installation of the arc extinguishing gate 200 and the insulating plate 100 are realized, and assembly is convenient.

It should be noted that the arc extinguishing structure further includes an arc striking plate 300 disposed between the two insulating plates 100, and the arc striking plate 300 can reliably strike the arc at the arc extinguishing grid 200 to extinguish the arc as soon as possible.

Specifically, the arc striking plate 300 is provided at both sides thereof in the first direction with a plurality of second fixing portions 310, and the second fixing portions 310 are riveted with the insulating plate 100. In this embodiment, the insulating plate 100 is provided with a second fixing hole corresponding to the second fixing portion 310, the second fixing portion 310 is inserted into the second fixing hole and deforms the second fixing portion 310 in an extrusion manner to realize riveting, the connection is stable, positioning and installation of the arc striking plate 300 and the insulating plate 100 are realized, and assembly is convenient.

In the present embodiment, referring to fig. 1, 4 and 5, the arc extinguishing structure further includes an arc extinguishing bracket 400 and an arc extinguishing plate 500. Wherein, the arc extinguishing bracket 400 is arranged between the two insulating plates 100 and is positioned at the second end of the arc extinguishing gate 200; the arc suppression plate 500 is provided on the arc suppression bracket 400, and the arc suppression plate 500 is provided with a plurality of exhaust holes 510. In this embodiment, when the contact of the circuit breaker is opened, the high temperature generated by the arc will expand the gas inside the circuit breaker, the expanded gas can be sequentially discharged out of the arc extinguishing structure through the arc extinguishing channel and the exhaust hole 510, and the gas can effectively eliminate the residual arc through the arc extinguishing plate 500, so that the arc extinguishing structure achieves better arc extinguishing capability.

Specifically, a plurality of arc suppression plates 500 are stacked, two adjacent arc suppression plates 500 are rotated 180 degrees to enable the exhaust holes 510 of the two adjacent arc suppression plates 500 to be arranged in a staggered mode, so that gas has longer flowing distance at the positions of the plurality of arc suppression plates 500, and further the arc suppression structure achieves better arc suppression capability; and the exhaust holes 510 of two adjacent arc suppression plates 500 are arranged in a staggered manner, so that the air flow strength can be effectively weakened, and the influence on electric appliances outside the circuit breaker is avoided. In addition, the staggered arrangement of the exhaust holes 510 of the two adjacent arc suppression plates 500 can prevent dust, effectively prevent foreign matters from entering the circuit breaker, and avoid the occurrence of the damage of the circuit breaker caused by the foreign matters.

Preferably, the arc suppression plates 500 are stacked with 3-5.

Specifically, the arc-extinguishing plate 500 is provided with a groove 540, the bottom of the groove 540 is provided with a plurality of exhaust holes 510, and the expanded gas flows through the groove 540 from the through hole of the arc-extinguishing plate 500 close to the arc-extinguishing gate 200 and flows through the through hole of the next arc-extinguishing plate 500 from the groove 540, so that the arc-extinguishing structure can further achieve better arc-extinguishing capability, and the gas flow strength of the gas discharged from the arc-extinguishing structure can be further weakened.

Specifically, the arc suppression plates 500 are provided with the barrier strips 520 along one side of the first direction, the positioning surfaces 530 are arranged on the other side, the barrier strips 520 of one of the two adjacent arc suppression plates 500 are attached to the positioning surfaces 530 of the other, and the direction of the arc suppression plates 500 can be conveniently identified to facilitate assembly.

Specifically, the arc suppression bracket 400 is provided with a mounting groove 410, the bottom of the mounting groove 410 is provided with a through hole 420, two inner sides of the mounting groove 410 along the second direction are both provided with a limiting bar 430, the arc suppression plate 500 is arranged in the mounting groove 410 and between the limiting bar 430 and the bottom of the mounting groove 410, and the arc suppression plate 500 is effectively prevented from being separated from the mounting groove 410 through the arrangement of the limiting bar 430. In this embodiment, the expanded gas sequentially flows through the arc extinguishing passage, the through hole 420, and the exhaust hole 510.

In this embodiment, with continued reference to fig. 1, the insulating plates 100 are provided with a plurality of positioning holes 110, and a plurality of positioning protrusions 440 are disposed on two sides of the arc extinguishing bracket 400 along the first direction, and the positioning protrusions 440 are inserted into the positioning holes 110 one by one, so as to realize the fixed connection between the arc extinguishing bracket 400 and the two insulating plates 100, and facilitate the positioning assembly of the arc extinguishing bracket 400 and the insulating plates 100.

Specifically, the insulating plate 100 is provided with a plurality of positioning holes 110 in the second direction. Preferably, the insulating plate 100 is provided with 2-5 positioning holes 110 at intervals along the second direction.

It should be noted that, the mounting groove 410 penetrates along the first direction, the first end of the insulating plate 100 protrudes out of the arc extinguishing grid plate 200 to enable the arc extinguishing bracket 400 to be located between the two insulating plates 100, two sides of the arc extinguishing plate 500 along the first direction are respectively abutted against the insulating plates 100 on the corresponding sides, and the two inner side surfaces and the limiting strips 430 of the mounting groove 410 along the second direction are matched to achieve positioning of the arc extinguishing plate 500, so that assembly is convenient.

Specifically, the end of the positioning protrusion 440 toward the arc extinguishing gate 200 is provided with a chamfer 441, further facilitating the positioning assembly of the arc extinguishing bracket 400 with the insulating plate 100.

Specifically, the insulating plate 100 has a first end and a second end that are oppositely disposed along a third direction, positioning grooves 120 are disposed on two sides of the first end of the insulating plate 100 along the second direction, the arc extinguishing brackets 400 have positioning portions 450 corresponding to the positioning grooves 120 one by one, and the positioning portions 450 are disposed in the positioning grooves 120, so that connection between the insulating plate 100 and the arc extinguishing brackets 400 is more stable. The direction c in fig. 1 is a third direction.

In this embodiment, referring to fig. 6 to 7, the arc extinguishing structure further includes two gas generating members 600, the two gas generating members 600 are respectively sleeved on the branching portions at two sides of the opening slot 210 of the arc extinguishing gate sheet 200, and the two gas generating members 600 have the functions of generating the expansion gas and guiding the gas to flow.

Specifically, the gas generating member 600 is disposed at the second end of the insulating plate 100.

Specifically, a plurality of separators 610 are disposed in the gas generating member 600, slots are formed between adjacent separators 610, the number of the slots is less than or equal to the number of the arc extinguishing grid plates 200, and at least part of the arc extinguishing grid plates 200 are inserted in the slots in a one-to-one correspondence manner.

Specifically, the arc extinguishing structure further includes a fixing member 700, and the fixing member 700 is configured to fix the gas generating member 600 by penetrating the gas generating member 600 and the arc extinguishing grid 200.

Specifically, the partition 610 is provided with a first perforation 611, and the branch portion of the arc extinguishing grid 200 is provided with a second perforation 230, and the fixing member 700 penetrates the first perforation 611 and the second perforation 230 to fix the gas generating member 600 and the arc extinguishing grid 200. Illustratively, the shapes of the first and second perforations 611, 230 include, but are not limited to, rectangular, triangular, or hexagonal.

In some embodiments, a plurality of separators 610 are disposed on an inner surface of one side of the gas generating member 600 along the second direction, and a shaping protrusion 620 is disposed on an inner surface of the other side of the gas generating member 600 along the second direction, wherein the shaping protrusion 620 is designed according to the arc extinguishing grid 200 in a fitting manner, and at least a part of edges of the arc extinguishing grid 200 are attached to the shaping protrusion 620, so that the arc extinguishing grid 200 is positioned accurately.

In this embodiment, referring to fig. 8, the arc extinguishing structure further includes a cover plate 800, and a plurality of elongated holes 810 are provided in the end cover plate 800 disposed on the arc extinguishing bracket 400 opposite to the arc extinguishing grid plate 200. Specifically, the cover plate 800 is disposed on the mounting groove 410, and the expanded gas flows through the arc extinguishing passage, the through hole 420, the exhaust hole 510 and the elongated hole 810 in sequence, and the elongated hole 810 guides the flow of the expanded gas and further weakens the air flow strength of the gas exiting the arc extinguishing structure.

The arc extinguishing structure provided in this embodiment may be further disposed in other products requiring arc extinguishing, which is not limited herein.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Arc extinguishing structure, its characterized in that includes:

an insulating plate (100) provided with two insulating plates at intervals along a first direction;

arc extinguishing bars piece (200), set up two between insulation board (100) and be provided with a plurality ofly along the second direction interval, a plurality of arc extinguishing bars piece (200) and two be formed with a plurality of arc extinguishing passageway between insulation board (100), the first end of arc extinguishing bars piece (200) is provided with open slot (210), open slot (210) have first face (211) and second face (212), first face (211) with second face (212) pass through arc surface (213) transition, arc surface (213) skew arc extinguishing bars piece (200) are along the center setting of first direction, and adjacent arc extinguishing bars piece (200) rotate 180 setting so that adjacent arc extinguishing bars piece (200) arc surface (213) are along first direction crisscross the setting.

2. The arc extinguishing structure according to claim 1, wherein a plurality of first fixing portions (220) are provided on both sides of the arc extinguishing gate sheet (200) in the first direction, and the first fixing portions (220) are riveted with the insulating plate (100).

3. The arc extinguishing structure according to claim 1, further comprising an arc striking plate (300) disposed between two of the insulating plates (100).

4. An arc extinguishing structure according to claim 3, characterized in that the arc striking plate (300) is provided with a plurality of second fixing portions (310) on both sides in the first direction, the second fixing portions (310) being riveted with the insulating plate (100).

5. The arc extinguishing structure according to any one of claims 1 to 4, further comprising:

an arc extinguishing bracket (400) arranged between the two insulating plates (100) and positioned at the second end of the arc extinguishing grid plate (200);

and an arc suppression plate (500) which is arranged on the arc suppression bracket (400), wherein the arc suppression plate (500) is provided with a plurality of exhaust holes (510).

6. The arc extinguishing structure according to claim 5, wherein one side of the arc extinguishing plates (500) along the first direction is provided with a barrier rib (520), the other side is provided with a positioning surface (530), and the barrier rib (520) of one of the adjacent two arc extinguishing plates (500) is attached to the positioning surface (530) of the other.

7. The arc extinguishing structure according to claim 5, characterized in that the arc extinguishing plate (500) is provided with a groove (540), and the bottom of the groove (540) is provided with a plurality of the exhaust holes (510).

8. The arc extinguishing structure according to claim 5, wherein the arc extinguishing bracket (400) is provided with a mounting groove (410), a through hole (420) is formed in the bottom of the mounting groove (410), limit strips (430) are respectively formed on two inner sides of the mounting groove (410) along the second direction, and the arc extinguishing plate (500) is arranged in the mounting groove (410) and located between the limit strips (430) and the bottom of the mounting groove (410).

9. The arc extinguishing structure according to claim 5, wherein the insulating plate (100) is provided with a plurality of positioning holes (110) along the second direction, the arc extinguishing brackets (400) are provided with a plurality of positioning protrusions (440) along both sides of the first direction, and the positioning protrusions (440) are inserted into the positioning holes (110) one by one to realize the fixed connection between the arc extinguishing brackets (400) and the two insulating plates (100).

10. The arc extinguishing structure according to claim 5, further comprising:

a cover plate (800) arranged at the end part of the arc extinguishing bracket (400) facing away from the arc extinguishing grid sheet (200);

two gas generating pieces (600) respectively sleeved on the branch parts at two sides of the open slot (210);

and the fixing piece (700) is used for fixing the gas generating piece (600) by penetrating the gas generating piece (600) and the arc extinguishing grid sheet (200).