CN217691017U

CN217691017U - Intelligent reclosing miniature circuit breaker

Info

Publication number: CN217691017U
Application number: CN202221259352.5U
Authority: CN
Inventors: 陈浩; 徐通通
Original assignee: Zhuowen Information Technology Co ltd
Current assignee: Zhuowen Information Technology Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-28
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses an intelligent reclosing small-sized breaker, which is formed by splicing a P-pole breaker unit and a reclosing driving unit; the reclosing drive unit comprises a shell, an electric operating mechanism and a control circuit board, wherein the electric operating mechanism and the control circuit board are arranged in the shell; the shell is formed by connecting a rear shell and a front shell in an involutory manner, two opposite ends of the shell are respectively provided with a wiring terminal connected with an external wire in a positioning manner, the two wiring terminals are connected through an N-pole conductor, and a channel for arranging the N-pole conductor is reserved below the electric operating mechanism in the shell. The utility model discloses an effectively merge N utmost point unit and reclosing lock drive unit among the intelligence miniature circuit breaker that recloses, structural design is compact reasonable, does benefit to the miniaturized design of product.

Description

Intelligent reclosing miniature circuit breaker

Technical Field

The utility model relates to an intelligence reclosing lock miniature circuit breaker belongs to circuit breaker structural design technical field.

Background

Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers. A low-voltage circuit breaker such as a miniature circuit breaker is a protective switch electric appliance capable of timely cutting off a line when faults such as undervoltage, overload, short circuit and the like occur on a distribution line. Traditional miniature circuit breaker can only on-spot manual control switch, has increased the reclosing drive unit afterwards on original miniature circuit breaker basis, and the original function of miniature circuit breaker is not interfered in the joining of reclosing drive unit, but can realize long-range or wireless (like bluetooth control) control miniature circuit breaker divide-shut brake when needs. In the intelligence reclose miniature circuit breaker that has reclose drive unit and N utmost point unit at present, it is two independent settings with N utmost point unit to reclose drive unit usually to lead to the increase of the width size of intelligence reclose miniature circuit breaker, be unfavorable for the miniaturization of product.

SUMMERY OF THE UTILITY MODEL

To pointing out not enough in the background art, the utility model provides a compact reasonable intelligent reclosing lock miniature circuit breaker relatively of structure.

Realize the utility model discloses the technical scheme of purpose is:

an intelligent reclosing miniature circuit breaker is formed by splicing a P-pole circuit breaker unit and a reclosing driving unit; the reclosing drive unit comprises a shell, an electric operating mechanism and a control circuit board, wherein the electric operating mechanism and the control circuit board are arranged in the shell; the shell is formed by connecting a rear shell and a front shell in an involutory manner, two opposite ends of the shell are respectively provided with a connecting terminal connected with an external wire in a positioning manner, the two connecting terminals are connected through an N-pole conductor, and a channel for arranging the N-pole conductor is reserved below the electric operating mechanism in the shell.

In the above technical solution, the N-pole conductor is welded to the connection terminal.

In the technical scheme, a mechanism installation cavity and two terminal installation cavities are arranged in the shell, and the two terminal installation cavities are respectively positioned at two ends of the mechanism installation cavity and are separated by a partition plate; the electric operating mechanism, the control circuit board and the N-pole conductor are arranged in the mechanism mounting cavity, and the wiring terminal is arranged in the terminal mounting cavity; each wiring terminal comprises a lug plate positioned in the terminal installation cavity and a wiring frame which can move up and down and is sleeved on the lug plate, the upper end of the wiring frame is in threaded connection with a locking bolt, the inner end of the lug plate penetrates through the partition plate to stretch into the mechanism installation cavity and is bent downwards to form a pressing piece part, and the end part of the N-pole conductor is tightly pressed between the pressing piece part and the partition plate.

Among the above-mentioned technical scheme, be formed with the slot between pressure plate portion and the baffle, the N utmost point conductor is the sheetmetal integrated bending shaping, and its both ends have electrically conductive inserted sheet, electrically conductive inserted sheet close-fitting peg graft in the slot and with pressure plate portion in close contact with.

In the technical scheme, the conductive insertion piece is provided with the elastic part protruding towards the direction of the partition board, and the elastic part elastically collides with the partition board.

In the technical scheme, the positioning clamping tables are formed on the front side and the rear side of the wiring piece, and the positioning clamping grooves matched with the positioning clamping tables in a clamping mode are correspondingly arranged on the rear shell and the front shell.

The utility model discloses positive effect has: the utility model discloses an among the intelligence reclose miniature circuit breaker, set up binding post through the relative both ends at reclose drive unit, and pass through two binding post and connect between the N utmost point conductor as the N utmost point unit, binding post connects N looks circuit, arrange the N utmost point conductor simultaneously through setting up the passageway in casing electric operating mechanism below and can avoid N utmost point conductor 26 and electric operating mechanism to produce the interference influence, through effectively merging N utmost point unit and reclose drive unit, the structural design is compact reasonable, do benefit to the miniaturized design of product.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an intelligent reclosing miniature circuit breaker according to the present invention;

fig. 2 is a schematic diagram of an internal structure of the electric clutch driving unit shown in fig. 1;

FIG. 3 is a schematic structural view of an N-pole conductor of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a schematic structural view of the middle and rear shells of the present invention;

fig. 6 is a schematic structural view of the front housing of the present invention;

FIG. 7 is a schematic structural view of a connection lug of the present invention;

fig. 8 is a schematic structural view of the middle connection piece of the present invention.

The reference symbols shown in the figures are: a 1-P pole breaker unit; 2-reclosing drive unit; 20-buckling; 21-an electric operating mechanism; 22-a control circuit board; 23-a rear shell; 24-a front shell; 25-a connecting terminal; 251-a lug; 252-a wire frame; 253-locking bolts; 254-a press sheet portion; 255-slot; 256-positioning clamping table; 257 — an abutment step; 26-N pole conductor; 261-a conductive patch; 262-an elastic part; 263-buttonhole; 27-mechanism mounting cavity; 28-terminal mounting cavity; 29-a separator; 234-positioning card slot.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The structure of the intelligent reclosing miniature circuit breaker in the embodiment is shown in fig. 1 and fig. 2, and the intelligent reclosing miniature circuit breaker is formed by splicing a P-pole circuit breaker unit 1 and a reclosing driving unit 2; the reclosing drive unit 2 comprises a shell, an electric operating mechanism 21 and a control circuit board 22, wherein the electric operating mechanism 21 and the control circuit board 22 are arranged in the shell, and the control circuit board 22 is connected with the electric operating mechanism 21; the shell is formed by oppositely connecting a rear shell 23 and a front shell 24, two opposite ends of the shell are respectively provided with a connecting terminal 25 connected with an external wire in a positioning mode, the two connecting terminals 25 are connected through an N-pole conductor 26, and a channel for arranging the N-pole conductor 26 is reserved below the electric operating mechanism 21 in the shell. In this embodiment, the connecting terminals 25 are disposed at two opposite ends of the reclosing driving unit 2, and the two connecting terminals 25 are connected between the N-pole conductors 26 to serve as N-pole units (under the condition that the P-pole breaker unit is cut off, the N-pole units are not affected by safety continuously), the connecting terminals 25 are connected with N-phase lines, and meanwhile, the N-pole conductors 26 are arranged by arranging channels below the electric operating mechanism 21 in the casing to avoid interference between the N-pole conductors 26 and the electric operating mechanism 21, so that the N-pole units and the reclosing driving unit are combined effectively, the structural design is compact and reasonable, and the miniaturization design of products is facilitated.

In one embodiment of the present invention, the N-pole conductor 26 is welded to the connection terminal 25 to achieve electrical connection.

In another possible implementation of this embodiment, referring to fig. 2 and fig. 5 to 8, a mechanism installation cavity 27 and two terminal installation cavities 28 are provided in the housing, and the two terminal installation cavities 28 are respectively located at two ends of the mechanism installation cavity 27 and are separated by a partition 29; the electric operating mechanism 21, the control circuit board 22 and the N-pole conductor 26 are arranged in the mechanism mounting cavity 27, and the wiring terminal 25 is arranged in the terminal mounting cavity 28; each wiring terminal 25 comprises a lug 251 positioned in the terminal mounting cavity 28 and a wiring frame 252 which can move up and down and is sleeved on the lug 251, a locking bolt 253 is screwed at the upper end of the wiring frame 252, the inner end of the lug 251 penetrates through the partition plate 29 to extend into the mechanism mounting cavity 27 and is bent downwards to form a pressing piece portion 254, and the end portion of the N-pole conductor 26 is pressed between the pressing piece portion 254 and the partition plate 29; in this embodiment, the N-pole conductor 26 is in close contact with the pressing piece 254 to achieve electrical connection by means of crimping, so that a welding process for connecting the N-pole conductor 26 with the pressing piece 254 is omitted.

Furthermore, a slot 255 is formed between the pressing piece 254 and the separator 29, the N-pole conductor 26 is formed by integrally bending a metal sheet, and two ends of the N-pole conductor are provided with conductive insertion pieces 261, and the conductive insertion pieces 261 are tightly inserted into the slot 255 and are tightly contacted with the pressing piece 254; in the embodiment, the slot 255 is formed on the pressing part 254, and the slot 255 is arranged to facilitate the insertion of the conductive insertion piece 26 and limit the conductive insertion piece 26; in addition, in practical operation, an arch structure which is bent in a circular arc shape can be arranged on the position, close to the conductive inserting sheet 261, of the N-pole conductor 26, and the arch direction of the arch structure is opposite to the direction of inserting the conductive inserting sheet 261 into the slot 255, so that after the rear shell 23 and the front shell 24 are connected in a matched mode, the corresponding position on the rear shell 23 or the front shell 24 is elastically abutted against the arch structure, and therefore the limit on the N-pole conductor 26 is increased, and the connection between the conductive inserting sheet 261 and the slot 255 can be enhanced; and the arch structure can also compensate for the size error in assembly.

As shown in fig. 3 and 5, in order to further maintain reliable contact between the conductive tab 261 and the pressing portion 254, the conductive tab 261 is provided with an elastic portion 262 protruding toward the separator 29, and the elastic portion 262 elastically interferes with the separator 29, that is, the conductive tab 261 is sufficiently and effectively contacted with the pressing portion 254 after being inserted into the slot 255 by the elastic force of the elastic portion 262; further, the inner bottom wall of the housing is provided with a buckle 20 protruding into the channel, the N-pole conductor 26 is provided with a buckle hole 263 matched with the buckle 20, and the N-pole conductor 26 can be positioned by matching the buckle 20 with the buckle hole 263.

Furthermore, positioning clamping platforms 256 are formed on the front side and the rear side of the lug 251, positioning clamping grooves 234 which are in clamping fit with the positioning clamping platforms 256 are correspondingly formed on the rear shell 23 and the front shell 24, furthermore, a through hole for the pressure piece 254 to pass through is formed in the partition plate 29, and an abutting step 257 abutting against the partition plate 29 is formed on the lug 251; the effective positioning of the terminal strip 251 is realized by the insertion and matching of the positioning clamping table 256 and the positioning clamping groove 234 and the abutting limiting effect of the abutting step 257.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. An intelligent reclosing miniature circuit breaker is formed by splicing a P-pole circuit breaker unit (1) and a reclosing driving unit (2); the reclosing drive unit (2) comprises a shell, an electric operating mechanism (21) and a control circuit board (22), wherein the electric operating mechanism (21) and the control circuit board (22) are arranged in the shell, and the control circuit board (22) is connected with the electric operating mechanism (21); the shell is formed by oppositely connecting a rear shell (23) and a front shell (24), and is characterized in that two opposite ends of the shell are respectively provided with a connecting terminal (25) connected with an external wire in a positioning mode, the two connecting terminals (25) are connected through an N-pole conductor (26), and a channel for arranging the N-pole conductor (26) is reserved below the electric operating mechanism (21) in the shell.

2. The smart reclosing miniature circuit breaker according to claim 1, characterized in that said N-pole conductor (26) is welded to said terminal (25).

3. The intelligent reclosing miniature circuit breaker according to claim 1, wherein a mechanism installation cavity (27) and two terminal installation cavities (28) are provided in the housing, the two terminal installation cavities (28) are located at two ends of the mechanism installation cavity (27) respectively and are separated by a partition plate (29); the electric operating mechanism (21), the control circuit board (22) and the N-pole conductor (26) are arranged in the mechanism mounting cavity (27), and the wiring terminal (25) is arranged in the terminal mounting cavity (28); each wiring terminal (25) comprises a lug plate (251) positioned in the terminal mounting cavity (28) and a wiring frame (252) which can move up and down and is sleeved on the lug plate (251), a locking bolt (253) is screwed at the upper end of the wiring frame (252), the inner end of the lug plate (251) penetrates through the partition plate (29) to extend into the mechanism mounting cavity (27) and is bent downwards to form a pressing plate part (254), and the end part of the N-pole conductor (26) is pressed between the pressing plate part (254) and the partition plate (29).

4. The intelligent reclosing miniature circuit breaker according to claim 3, wherein a slot (255) is formed between the pressing piece portion (254) and the partition plate (29), the N-pole conductor (26) is formed by bending a metal sheet integrally, and conductive insertion pieces (261) are arranged at two ends of the N-pole conductor, and the conductive insertion pieces (261) are tightly inserted into the slot (255) and are in tight contact with the pressing piece portion (254).

5. The smart recloser miniature circuit breaker according to claim 4, wherein said conductive blade (261) has a resilient portion (262) protruding toward said partition (29), said resilient portion (262) resiliently abutting against said partition (29).

6. The intelligent reclosing miniature circuit breaker according to claim 3, wherein positioning clamping tables (256) are formed on the front side and the rear side of the lug plate (251), and positioning clamping grooves (234) which are in clamping fit with the positioning clamping tables (256) are correspondingly formed on the rear shell (23) and the front shell (24).