CN218333646U

CN218333646U - Intelligent circuit breaker

Info

Publication number: CN218333646U
Application number: CN202222485022.4U
Authority: CN
Inventors: 石大伟; 洪智宏; 柯福胜; 蔡节约
Original assignee: Xiamen Hongxin Electrical Technology Co ltd
Current assignee: Xiamen Hongxin Electrical Technology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-17
Anticipated expiration: 2032-09-20

Abstract

The utility model provides an intelligent circuit breaker, including terminal cover and circuit breaker body, the terminal cover is installed in the terminal side of circuit breaker body, the terminal cover comprises a roof, two blocks of curb plates and a back plate, the inside baffle that has of terminal cover, the baffle is cavity and lower cavity in the terminal cover internal partitioning, the baffle comprises base plate baffle and locking portion, be equipped with connecting portion between locking portion and the base plate, the base plate both sides are equipped with the buckle end, the roof middle part is run through be equipped with locking portion interference fit's jack, jack extending direction and base plate place plane formation contained angle alpha, interval D between locking portion and the base plate slightly is less than roof thickness L, go up the cavity and cavity connection portion's lateral wall symmetry down be equipped with buckle end joint complex joint groove, the utility model discloses can realize the convenient dismouting of baffle, and further promote the holistic temperature resistance of terminal cover for the whole durability of circuit breaker further promotes.

Description

Intelligent circuit breaker

Technical Field

The utility model relates to a technical field of circuit breaker, especially an intelligent circuit breaker.

Background

The molded case circuit breaker seals the contacts, the arc extinguish chamber, the release, the operating mechanism and other parts in a plastic case, and the plastic case is mainly used for isolating the conductors and grounding metal parts. Because the structure is very compact, the molded case circuit breaker can not be basically overhauled, and therefore, a terminal cover is often arranged outside the circuit breaker.

In order to solve the problems that a terminal cover has breakdown risks and damages equipment and personnel, a partition plate is arranged in the terminal cover in the prior art, and an inner space is divided into two cavities corresponding to an arc extinguish chamber outlet and a connection cable, for example, the terminal cover of the molded case circuit breaker disclosed by Chinese publication No. CN209496792U comprises a top plate, two side plates and a rear plate, wherein the top plate is positioned above the terminal cover, the two side plates are arranged in parallel face to face, the rear plate is far away from the circuit breaker body, a horizontal partition plate is arranged in the terminal cover in the horizontal direction, an inner cavity of the terminal cover is divided into an upper cavity and a lower cavity which are vertically arranged by the horizontal partition plate, the upper cavity is in butt joint with an arc extinguish chamber air outlet of the circuit breaker body and is used for receiving gas sprayed out of the circuit breaker body when current is cut off, and the lower cavity is used for receiving a cable connected with a terminal of the circuit breaker body.

According to the technical scheme, the pollution of high-temperature and high-pressure gas generated when the short-circuit current is cut off by the circuit breaker to the wiring terminal is isolated, and the risk of interphase breakdown at the lower part of the terminal cover is eliminated.

In view of the above, the present inventors have specially designed an intelligent circuit breaker, and have resulted from this.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the technical scheme of the utility model is as follows:

the utility model provides an intelligent circuit breaker, includes terminal cover and circuit breaker body, the terminal cover is installed in the terminal side of circuit breaker body, the terminal cover comprises a roof, two blocks of curb plates and a back plate, the inside baffle that has of terminal cover, the baffle is with terminal cover internal partitioning just to last cavity and lower cavity to circuit breaker body explosion chamber gas outlet and circuit breaker body terminal wiring end, the baffle comprises the base plate that is located the terminal cover, the locking portion that extends into this internal baffle of circuit breaker and locate the base plate opposite side, be equipped with connecting portion between locking portion and the base plate, the base plate both sides are equipped with the buckle end, the roof middle part is run through be equipped with locking portion interference fit's jack, jack extending direction forms contained angle alpha with base plate place plane, interval D between locking portion and the base plate slightly is less than roof thickness L, go up cavity and cavity body coupling portion's lateral wall symmetry down be equipped with buckle end joint complex joint groove.

Preferably, the connecting portion are cylindrical, the jack comprises a round hole and a square hole, the round hole is matched with the connecting portion in shape, the square hole is symmetrically arranged on two sides of the diameter of the round hole and matched with the shape of the locking portion, and the center of the round hole and the two clamping grooves are located on the same horizontal line.

Preferably, one side of the locking part close to the substrate is provided with a plurality of convex parts.

Preferably, the convex part is hemispherical and the cambered surface faces the substrate side.

Preferably, the buckle end extends along base plate length direction and is rectangular form, the joint groove is close to one side of last cavity or lower cavity and is equipped with the guide way, the guide way extends to joint groove middle part along terminal cover inner wall gradually, and the guide way orientation that is located same jack both sides is opposite.

Preferably, the latching end is symmetrically provided with inclined guide surfaces along both sides of the width direction thereof.

Preferably, the whole substrate is a BMC plastic layer, and one side of the substrate close to the upper cavity is covered with an asbestos fiber layer.

Preferably, the distance D between the locking part and the base plate is smaller than the thickness L of the top plate by 0.3-0.5mm.

Preferably, the extending direction of the insertion hole forms an included angle alpha of 10-45 degrees with the plane of the substrate.

The utility model has the advantages of as follows:

1. after the locking part is in interference fit with the jack, the inner side face of the locking part is abutted against the outer side wall of the top plate, and the partition plate is stably locked in the terminal cover by matching the clamping fit of the clamping end and the clamping groove, and can be conveniently disassembled and assembled when needing to be replaced;

2. the included angle formed by the enclosing of the insertion hole and the plane of the base plate enables the baffle plate to be conveniently clamped into the clamping grooves by rotating the clamping ends on the two sides of the baffle plate when the baffle plate is installed, so that the baffle plate is convenient to disassemble and assemble;

3. the abutting pressing force of the locking part and the top plate is increased through the convex part, so that the partition plate is further pressed on the terminal cover, and the partition plate can stably work.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

Wherein:

fig. 1 is a schematic perspective view of a circuit breaker body according to the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view showing a partial cross-sectional structure of the terminal cover of the present invention;

FIG. 4 is a schematic structural view of the baffle of the present invention;

FIG. 5 is a schematic view of a partial cross-sectional view of the socket structure of the present invention;

fig. 6 is a schematic view of the partial cross-sectional structure of the end-fitting structure of the convex display clip of the present invention.

Description of reference numerals:

1. a circuit breaker body; 11. a terminal side; 12. a groove; 2. a terminal cover; 21. a top plate; 22. a side plate; 23. a back plate; 24. an upper cavity; 25. a lower cavity; 26. a jack; 27. a circular hole; 28. a square hole; 3. a partition plate; 31. a substrate; 311. a BMC plastic layer; 312. a layer of asbestos fibres; 32. a baffle plate; 33. a locking portion; 34. a connecting portion; 35. a buckle end; 351. a clamping groove; 352. a guide groove; 353. a guide surface; 36. a raised portion.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Please refer to fig. 1 to 6, which are a preferred embodiment of the present invention.

As shown in fig. 1, a circuit breaker body 1 is shown, one side of the circuit breaker body 1 is a terminal side 11 for connecting in or out a cable, the terminal side 11 is recessed to form a groove 12, the front portion of the groove 12 close to the circuit breaker body 1 is an air outlet of an arc extinguish chamber, and the rear portion of the groove 12 close to the circuit breaker body 1 is a terminal.

As shown in fig. 2 and 3, the circuit breaker further comprises a terminal cover 2, the terminal cover 2 is installed on the terminal side 11 of the circuit breaker body 1, the terminal cover 2 is composed of a top plate 21, two side plates 22 and a rear plate 23, the top plate 21 is located on the lower portion, the rear plate 23 is located on the front side of the circuit breaker body 1, the two side plates 22 are located on two sides of the circuit breaker body 1, a partition plate 3 is arranged inside the terminal cover 2, and the partition plate 3 divides the inside of the terminal cover 2 into an upper cavity 24 and a lower cavity 25 which are right opposite to an air outlet of an arc extinguish chamber of the circuit breaker body 1 and a terminal of the circuit breaker body 1.

Specifically, as shown in fig. 4, the partition plate 3 is composed of a substrate 31 located in the terminal cover 2, a baffle 32 extending into the circuit breaker body 1, and a locking portion 33 disposed on the other side of the substrate 31 away from the baffle 32, the partition plate 3 is integrally long plate-shaped, the locking portion 33 is connected to the substrate 31 through a connecting portion 34, fastening ends 35 are disposed on both sides of the substrate 31 along the length direction, a jack 26 in interference fit with the locking portion 33 is disposed through the middle of the top plate 21, the jack 26 is located between the upper cavity 24 and the lower cavity 25, an included angle α is formed between the extension direction of the jack 26 and the plane of the substrate 31, a distance D between the locking portion 33 and the substrate 31 is slightly smaller than the thickness L of the top plate 21 (see fig. 3), and fastening grooves 351 in fastening fit with the fastening ends 35 are symmetrically disposed on the side walls of the connecting portion 34 of the upper cavity 24 and the lower cavity 25.

Preferably, as shown in fig. 4 and 5, the connecting portion 34 is cylindrical, the insertion hole 26 includes a circular hole 27 corresponding to the shape of the connecting portion 34 and square holes 28 symmetrically disposed on two sides of the diameter of the circular hole 27 and corresponding to the shape of the locking portion 33, and the center of the circular hole 27 and the two clamping grooves 351 are located on the same horizontal line, so that when the partition board 3 is installed, the clamping ends 35 on two sides of the partition board can be synchronously clamped into the clamping grooves 351 on two sides, and stable and efficient installation of the partition board 3 is realized.

Preferably, the side of the locking portion 33 close to the base plate 31 is provided with a plurality of convex portions 36, and the convex portions 36 in this embodiment are hemispherical and the arc faces the base plate 31 side, so that the abutting pressing force of the locking portion 33 and the top plate 21 is increased by the convex portions 36, the partition plate 3 is further pressed on the terminal cover 2, and the partition plate 3 can stably work.

Preferably, as shown in fig. 4-6, the fastening end 35 extends along the length direction of the substrate 31 and is in a long strip shape, one side of the fastening groove 351 close to the upper cavity 24 or the lower cavity 25 is provided with a guide groove 352, the guide groove 352 gradually extends to the middle of the fastening groove 351 along the inner wall of the terminal cover 2, the guide grooves 352 on two sides of the same jack 26 have opposite directions, specifically, in the separated space of the same partition plate 3, the directions of the two guide grooves 352 are opposite, at this time, after the locking portion 33 of the partition plate 3 penetrates into the jack 26, during rotation, the two guide grooves 352 with different directions can respectively guide the two fastening ends 35, so that the two fastening ends can be conveniently fastened into the corresponding fastening grooves 351, and efficient installation of the partition plate 3 is realized.

Further, buckle end 35 is equipped with the spigot surface 353 of slope along its width direction's bilateral symmetry, through mutually supporting of spigot surface 353 and guide way 352, can further provide the direction for buckle end 35 gets into joint groove 351 to make the installation of baffle 3 more stable controllable.

Preferably, as shown in fig. 6, the whole substrate 31 is a BMC plastic layer 311, and one side of the substrate 31 close to the upper cavity 24 is covered with an asbestos fiber layer 312, so that the temperature resistance and the insulation property of the whole BMC plastic material are extremely strong, high-temperature and high-pressure gas generated when short-circuit current is cut off can be sufficiently isolated, and meanwhile, the temperature resistance of the substrate is further improved by the protection of the asbestos fiber layer 312, so that the durability of the partition plate 3 is further prompted, and the service life of the substrate is prolonged.

In the present embodiment, in order to realize stable locking between the locking portion 33 and the base plate 31, the distance D between the locking portion 33 and the base plate 31 is smaller than the thickness L of the top plate 21 by 0.3 to 0.5mm, and the difference in the present embodiment is preferably 0.5mm.

To facilitate the installation of the partition 3, the insertion hole 26 extends at an angle α of 10-45 ° to the plane of the base plate 31, and preferably 30 ° in this embodiment.

The utility model has the advantages of as follows:

1. after the locking part 33 is in interference fit with the jack 26, the inner side surface of the locking part 33 abuts against the outer side wall of the top plate 21, and the clamping fit of the clamping end and the clamping groove 351 is matched, so that the partition plate 3 is stably locked in the terminal cover 2, and the disassembly and the assembly can be conveniently realized when the replacement is needed;

2. the insertion hole 26 and the plane of the substrate 31 enclose an included angle, so that when the partition board 3 is installed, the clamping ends 35 at two sides of the partition board 3 can be conveniently clamped into the clamping grooves 351 simultaneously through rotation, and the partition board 3 can be conveniently disassembled and assembled;

3. the abutting pressing force of the locking portion 33 against the top plate 21 is increased by the projection portion 36, so that the separator 3 is further pressed against the terminal cover 2, so that the separator 3 can operate stably.

To sum up, the utility model discloses can realize the convenient dismouting of baffle 3, and further promote the temperature resistance of terminal cover 2 for the whole durability of circuit breaker further promotes.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims

1. The utility model provides an intelligent circuit breaker, includes terminal cover (2) and circuit breaker body (1), terminal cover (2) are installed in terminal side (11) of circuit breaker body (1), terminal cover (2) comprise roof (21), two curb plates (22) and a back plate (23), terminal cover (2) inside has baffle (3), baffle (3) are with terminal cover (2) internal partitioning for just constituting last cavity (24) and lower cavity (25) of circuit breaker body (1) terminal wiring end to circuit breaker body (1) gas outlet and circuit breaker body (1) terminal wiring end, its characterized in that, baffle (3) are by base plate (31) that are located terminal cover (2), extend baffle (32) that get into circuit breaker body (1) and locate locking portion (33) of base plate (31) opposite side, be equipped with connecting portion (34) between locking portion (33) and base plate (31), base plate (31) both sides are equipped with buckle end (35), roof (21) middle part runs through be equipped with locking portion (33) jack (26) interference fit, jack (26) and base plate (31) extension direction are less than the base plate (31) plane interval (31) formation between the base plate (31) plane (31), the side walls of the upper cavity (24) and the lower cavity (25) connecting part (34) are symmetrically provided with clamping grooves (351) matched with the clamping ends (35) in a clamping manner.

2. The intelligent circuit breaker according to claim 1, wherein the connecting portion (34) is cylindrical, the insertion hole (26) comprises a circular hole (27) adapted to the shape of the connecting portion (34) and square holes (28) symmetrically arranged on two sides of the diameter of the circular hole (27) and adapted to the shape of the locking portion (33), and the center of the circular hole (27) and the two clamping grooves (351) are located on the same horizontal line.

3. A smart circuit breaker as claimed in claim 2, characterized in that the side of the locking portion (33) adjacent to the base plate (31) is provided with a plurality of protrusions (36).

4. A smart circuit breaker as claimed in claim 3, characterized in that the raised portion (36) is hemispherical and the arc faces towards the side of the substrate (31).

5. The intelligent circuit breaker according to claim 1, wherein the fastening end (35) extends in an elongated shape along the length direction of the substrate (31), a guide groove (352) is provided on one side of the fastening groove (351) near the upper cavity (24) or the lower cavity (25), the guide groove (352) gradually extends to the middle of the fastening groove (351) along the inner wall of the terminal cover (2), and the guide grooves (352) on both sides of the same jack (26) face opposite directions.

6. An intelligent circuit breaker according to claim 5, wherein the latching end (35) is provided with inclined guide surfaces (353) symmetrically along both sides in the width direction thereof.

7. A smart circuit breaker according to claim 1, characterized in that the substrate (31) is entirely a BMC plastic layer (311), and the side of the substrate (31) close to the upper chamber (24) is coated with a asbestos fiber layer (312).

8. A smart circuit breaker as claimed in claim 1, characterized in that the spacing D between the locking portion (33) and the base plate (31) is 0.3-0.5mm smaller than the thickness L of the top plate (21).

9. A smart circuit breaker as claimed in claim 1, characterized in that the direction in which the plug socket (26) extends forms an angle α of 10-45 ° with the plane of the base plate (31).