CN212084938U - Direct current breaker - Google Patents

Abstract

The utility model provides a direct current breaker, which comprises a shell and an insulating sheet, wherein the shell is provided with an arc extinguish chamber and a magnet arranged at one side of an opening of the arc extinguish chamber; the insulating piece encloses with the casing and closes the confined space that forms to be suitable for installation magnet, can isolated magnet and electric arc like this, makes the magnet not receive the ablation of electric arc to life has been prolonged.

Description

Direct current breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to direct current circuit breaker.

Background

The dc breaker is a device for overload and short-circuit protection of facilities and electrical equipment of a dc power distribution system, and can be widely used in the industries of electric power, post and telecommunications, traffic, industrial and mining, and the like.

The direct current circuit breaker on the market at present includes casing 01, moving contact, explosion chamber, be used for magnet 02 and the insulating piece 03 of magnetic blow, as shown in fig. 10-12, insulating piece 03 is the flat setting, and it forms the open slot that is suitable for installation magnet 02 with casing 01 relatively, and the opening of open slot sets up towards the explosion chamber, and like this when electric arc takes place, especially when electric arc stagnation is at the moving contact afterbody, electric arc gets into from opening one side, ablates magnet 02 easily to reduce life.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the arc among the prior art and ablating the magnet defect to a direct current breaker who prevents arc ablation magnet is provided.

Therefore, the utility model provides a direct current breaker, which comprises a shell and an insulating sheet, wherein the shell is provided with an arc extinguish chamber and a magnet arranged at one side of the opening of the arc extinguish chamber; the insulating sheet with the casing encloses and closes and form and be suitable for the installation the enclosure space of magnet.

The insulating piece includes the main part board, and locates the main part board is neighbouring the tip of explosion chamber, just court the first baffle that the shells inner wall direction extends, first baffle with shells inner wall offsets.

And a second baffle plate suitable for separating the magnet and the arc extinguishing chamber is formed on the shell.

The second baffle is positioned between the magnet and the first baffle, and the top of the second baffle is abutted to the main body plate.

The main body plate is only provided with a through hole for the connecting column on the shell to penetrate through.

The electromagnetic mechanism is characterized in that an electromagnetic mechanism and an operating mechanism are arranged on the shell, the operating mechanism comprises a handle and a connecting rod connected with the handle, and a baffle plate structure is arranged between the electromagnetic mechanism and the connecting rod.

The baffle structure isolates the connecting part of the handle and the connecting rod from the electromagnetic mechanism.

The shell comprises two side plates which are arranged oppositely, the baffle structure comprises a third baffle and a fourth baffle which are respectively extended from the two side plates oppositely, and an opposite insertion structure is arranged between the third baffle and the fourth baffle.

The opposite insertion structure comprises an L-shaped step formed on one side of the third baffle and the fourth baffle, and an L-shaped insertion block formed on the other side and capable of being inserted into the L-shaped step.

The main body plate is provided with a first notch and a second notch, and the first notch, the second notch and the through hole are not in a straight line.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a direct current breaker, insulating piece and casing enclose to close and form the enclosure space who is suitable for installation magnet, can completely cut off magnet and electric arc like this, make magnet can not receive the ablation of electric arc to life has been prolonged.

2. The utility model provides a direct current circuit breaker, insulating piece include the main part board to and locate the tip of the neighbouring explosion chamber of main part board, and towards the first baffle that the shells inner wall direction extends, first baffle offsets with shells inner wall, and first baffle plays the effect of separation electric arc, makes magnet can not receive the ablation of electric arc, and first baffle integrated into one piece has simple structure's advantage on the main part board.

3. The utility model provides a direct current breaker, the shaping has the second baffle that is suitable for separating magnet and explosion chamber on the casing, has strengthened the enclosure of installation magnet's seal like this, isolated electric arc and magnet, has further prolonged life.

4. The utility model provides a direct current breaker, second baffle are located between magnet and the first baffle, and its top offsets with the main part board, and isolated electric arc and second baffle like this prevent electric arc ablation second baffle to the life of extension casing.

5. The utility model provides a direct current breaker, casing include two curb plates that the subtend set up, and baffle structure is including following two curb plates respectively towards subtend extension's third baffle and fourth baffle, are equipped with the plug-in structure between third baffle and the fourth baffle, and above-mentioned baffle structure can increase the creepage distance between electromagnetic mechanism and the connecting rod, improves direct current breaker and strikes withstand voltage ability, prevents withstand voltage breakdown.

6. The utility model provides a direct current breaker, to inserting the structure including the shaping in the L shape step of third baffle and fourth baffle one side to and the shaping can with the L shape inserted block of L shape step grafting in the other side, can strengthen electric clearance and creepage distance between electromagnetic mechanism and the connecting rod like this, improve direct current breaker and strike withstand voltage ability, prevent withstand voltage breakdown, and the L shape step of mutually supporting has simple structure's advantage with L shape inserted block.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the dc circuit breaker of the present invention;

FIG. 2 is a perspective view of FIG. 1 with one side panel removed;

FIG. 3 is a perspective view of FIG. 2 with the insulating sheet removed;

FIG. 4 is a perspective view of an insulating sheet;

FIG. 5 is a cross-sectional view of FIG. 2;

FIG. 6 is an enlarged view of the structure of portion A in FIG. 5;

FIG. 7 is another side panel of FIG. 1;

FIG. 8 is a cross-sectional view of FIG. 1;

FIG. 9 is an enlarged view of the structure of portion B of FIG. 8;

fig. 10 is a perspective view of a prior art dc circuit breaker with one side plate removed;

FIG. 11 is a cross-sectional view of FIG. 9;

fig. 12 is a schematic structural diagram of an insulating sheet in the prior art.

Description of reference numerals: 01. a housing; 02. a magnet; 03. an insulating sheet;

1. a housing; 11. a second baffle; 12. connecting columns; 13. a side plate; 2. a magnet; 3. an insulating sheet; 31. a main body plate; 32. a first baffle plate; 33. perforating; 34. a first notch; 35. a second notch; 4. a handle; 5. a connecting rod; 6. a third baffle plate; 61. a step; 7. a fourth baffle; 71. and (5) inserting the blocks.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The present embodiment provides a dc circuit breaker, as shown in fig. 1 and 2, including a case 1 and an insulating sheet 3.

Casing 1, as shown in fig. 1-9, including two curb plates 13 of subtend setting, casing 1 has the explosion chamber, and locates magnet 2 of explosion chamber opening one side, the shaping is gone up to casing 1 has and is suitable for the separation magnet 2 with the second baffle 11 of explosion chamber, in this embodiment, second baffle 11 is located magnet 2 with between the first baffle 32, and its top with main part board 31 offsets. The electromagnetic mechanism and the operating mechanism are arranged on the shell 1, the operating mechanism comprises a handle 4 and a connecting rod 5 connected with the handle 4, a baffle plate structure is arranged between the electromagnetic mechanism and the connecting rod 5, the baffle plate structure separates a connecting part of the handle 4 and the connecting rod 5 from the electromagnetic mechanism, the baffle plate structure comprises a third baffle plate 6 and a fourth baffle plate 7 which respectively extend from two side plates 13 towards opposite directions, an opposite insertion structure is arranged between the third baffle plate 6 and the fourth baffle plate 7, and the opposite insertion structure comprises an L-shaped step 61 formed on one side of the third baffle plate 6 and the fourth baffle plate 7 and an L-shaped insertion block 71 formed on the other side and capable of being inserted into the L-shaped step 61.

Insulating sheet 3, as shown in fig. 2 and 4, enclose with casing 1 and close to form the enclosure space who is suitable for the installation magnet 2, insulating sheet 3 includes main body board 31, and locates main body board 31 is close to the tip of explosion chamber, and towards first baffle 32 that casing 1 inner wall direction extends, first baffle 32 with casing 1 inner wall offsets, main body board 31 only the shaping has one and supplies the perforation that spliced pole 12 on the casing 1 wore, be equipped with first breach 34 and second breach 35 on the main body board 31, first breach 34, second breach 35 with perforation 33 is not on a straight line, first breach 34 sets up main body board 31 up the up end, second breach 35 sets up main body board 31 with the place of first baffle 32 handing-over, because first breach 34, second breach 35 with perforation 33 is not on a straight line, thus, the installation and positioning are more accurate.

The utility model provides a direct current breaker, insulating piece 3 enclose with casing 1 and close the enclosure space that forms and be suitable for installation magnet 2, can completely cut off magnet 2 and electric arc like this, make magnet can not receive the ablation of electric arc to life has been prolonged.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A direct current circuit breaker, comprising:

a housing (1) having an arc-extinguishing chamber and a magnet (2) provided on an opening side of the arc-extinguishing chamber;

the insulating sheet (3) and the shell (1) are enclosed to form a closed space suitable for mounting the magnet (2).

2. The dc circuit breaker according to claim 1, wherein the insulation sheet (3) comprises a main body plate (31), and a first baffle (32) disposed at an end of the main body plate (31) adjacent to the arc extinguishing chamber and extending toward an inner wall of the housing (1), wherein the first baffle (32) abuts against the inner wall of the housing (1).

3. The direct current circuit breaker according to claim 2, characterized in that said case (1) is formed with a second baffle (11) suitable for separating said magnet (2) from said arc extinguishing chamber.

4. The direct current circuit breaker according to claim 3, characterized in that said second shutter (11) is located between said magnet (2) and said first shutter (32) and its top is against said main body plate (31).

5. The direct current circuit breaker according to any of claims 2-4, characterized in that the main body plate (31) is formed with only one through hole (33) for the connection post (12) on the housing (1) to pass through.

6. The direct current circuit breaker according to any one of claims 1-4, characterized in that the housing (1) is provided with an electromagnetic mechanism and an operating mechanism, the operating mechanism comprises a handle (4) and a connecting rod (5) connected to the handle (4), and a baffle structure is provided between the electromagnetic mechanism and the connecting rod (5).

7. The direct current circuit breaker according to claim 6, characterized in that said baffle structure is adapted to isolate between the connection portion of the handle (4) and the link (5) and the electromagnetic mechanism.

8. The direct current circuit breaker according to claim 7, characterized in that the housing (1) comprises two side plates (13) oppositely arranged, the baffle structure comprises a third baffle (6) and a fourth baffle (7) oppositely extending from the two side plates (13), and an insertion structure is arranged between the third baffle (6) and the fourth baffle (7).

9. The direct current circuit breaker according to claim 8, wherein the insertion structure comprises an L-shaped step (61) formed on one of the third shutter (6) and the fourth shutter (7), and an L-shaped insertion block (71) formed on the other and adapted to be inserted into the L-shaped step (61).

10. The direct current circuit breaker according to claim 5, characterized in that the main body plate (31) is provided with a first notch (34) and a second notch (35), and the first notch (34), the second notch (35) and the through hole (33) are not in a straight line.

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