CN112466720A

CN112466720A - Moulded case circuit breaker convenient to heat dissipation

Info

Publication number: CN112466720A
Application number: CN202011398084.0A
Authority: CN
Inventors: 王耀
Original assignee: Wuhu Junle Electric Co ltd
Current assignee: Wuhu Junle Electric Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-03-09

Abstract

The invention discloses a molded case circuit breaker convenient for heat dissipation, which comprises a circuit breaker body, wherein two strip-shaped grooves are respectively formed in two sides of the circuit breaker body, chamfers are formed in the outer walls of the four strip-shaped grooves, semicircular grooves are symmetrically formed in two sides of the inner wall of each strip-shaped groove, a mounting plate is arranged on one side of the circuit breaker body, a placing groove is formed in one side of the mounting plate, two through holes are formed in two sides of the mounting plate, the inner walls of the two through holes are movably and alternately connected with an inserting rod, a positioning block is fixedly connected to one end of the inserting rod, sliding grooves are symmetrically formed in two sides of the positioning block, a reset spring is fixedly connected to one side of the. According to the invention, the mounting plate, the insertion rod, the positioning block, the reset spring and the clamping block are used in a matched manner, so that the purpose of quickly dismounting the mounting plate and the breaker body is realized, and the convenience of using the breaker is improved.

Description

Moulded case circuit breaker convenient to heat dissipation

Technical Field

The invention relates to the technical field of molded case circuit breakers, in particular to a molded case circuit breaker convenient for heat dissipation.

Background

The molded case circuit breaker is also called a device type circuit breaker, and can automatically cut off current after the current exceeds a trip setting, the molded case circuit breaker refers to a case which uses a plastic insulator as a device and is used for isolating conductors and grounding metal parts, the molded case circuit breaker is suitable for serving as a protection switch of a branch circuit, a tripping unit of the molded case circuit breaker is divided into a thermomagnetic tripping unit and an electronic tripping unit, and the molded case circuit breaker basically cannot be overhauled due to the fact that the structure is very compact.

Most of the moulded case circuit breakers of current are generally through a plurality of screws to its fixed mounting make its steady operation, but install through the screw and lead to wanting to dismantle more troublesome to moulded case circuit breaker to it is more troublesome when resulting in moulded case circuit breaker to remove to other positions and use, influences the convenience that moulded case circuit breaker used.

Disclosure of Invention

The present invention is directed to a molded case circuit breaker with convenient heat dissipation, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a plastic case circuit breaker convenient for heat dissipation comprises a circuit breaker body, two strip-shaped grooves are respectively arranged on two sides of the circuit breaker body, chamfers are arranged on the outer walls of the four strip-shaped grooves, semicircular grooves are symmetrically arranged on two sides of the inner wall of the strip-shaped groove, one side of the breaker body is provided with a mounting plate, one side of the mounting plate is provided with a placing groove, two sides of the mounting plate are both provided with two through holes, the inner walls of the two through holes are movably connected with inserting rods in an inserting way, one end of the inserted link is fixedly connected with a positioning block, sliding chutes are symmetrically arranged on two sides of the positioning block, one side of the inner wall of the sliding chute is fixedly connected with a return spring, one end of the return spring is fixedly connected with a clamping block, the one end of fixture block is the elastic rubber material, the bilateral symmetry fixedly connected with connecting plate of mounting panel, two mounting holes have all been seted up to one side of connecting plate.

Preferably, an air inlet is formed in one side of the circuit breaker body, a first dust screen is arranged on the inner wall of the air inlet, and a ventilation opening is formed in the other side of the circuit breaker body.

Preferably, one side of circuit breaker body and the outside fixedly connected with fixed cover that is located the air intake, the bottom fixedly connected with driving motor of fixed cover inner wall, driving motor's output shaft is connected with the transfer line through the shaft coupling transmission, the fixed heat dissipation fan that has cup jointed of tip of transfer line.

Preferably, the inner cavity of the ventilation opening is fixedly connected with a plurality of heat-conducting fins, and one ends of the plurality of heat-conducting fins are fixedly connected with a radiating fin.

Preferably, the opposite side of circuit breaker body just is located the outside of vent and has seted up back type groove, be provided with the second dust screen in the inner chamber in back type groove, the second dust screen is the convex structure, the avris fixedly connected with connection piece of second dust screen, it has a plurality of preforming, a plurality of to articulate in one side of back type inslot wall the preforming is the rectangle array setting, and is a plurality of one side swing joint of preforming all with one side of connection piece.

Preferably, strip-shaped grooves are formed in two sides of the inner wall of the air inlet, strip-shaped rods are symmetrically and fixedly connected to two sides of the first dust screen, a semicircular chamfer is formed in one side of each of the two strip-shaped rods, the outer walls of the two strip-shaped rods are movably clamped with inner cavities of the two strip-shaped grooves respectively, and pull rings are fixedly connected to one side of each of the two strip-shaped rods

Preferably, the cooling fin includes aluminum alloy plate and copper, the top of aluminum alloy plate is seted up flutedly, the inner wall of recess and the outer wall fixed connection of copper.

Preferably, the driving motor is electrically connected with an external power supply through an external switch.

The invention has the technical effects and advantages that:

(1) the mounting plate, the insertion rod, the positioning block, the reset spring and the clamping block are matched for use, so that the purpose of quickly dismounting the mounting plate and the breaker body is realized, and the convenience of using the breaker is improved;

(2) according to the circuit breaker, the heat dissipation fan, the heat conducting fins and the heat dissipation fins are matched for use, so that heat generated when the circuit breaker body works is conducted to the heat conducting fins, and then the heat is conducted to the heat dissipation fins through the heat conducting fins, the purpose of dissipating the heat is achieved, and the heat dissipation effect is improved;

(3) according to the invention, the purpose of quickly disassembling and assembling the first dustproof net and the second dustproof net is realized through the matched use of the bar-shaped rod, the pull ring, the connecting sheet and the pressing sheet, so that the convenience of cleaning the first dustproof net and the second dustproof net is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a schematic view of a partial structure of a fixture block according to the present invention.

Fig. 3 is a schematic view of a partial structure of the circuit breaker body according to the present invention.

FIG. 4 is an enlarged view of a portion A of FIG. 2 according to the present invention.

FIG. 5 is an enlarged view of a portion B of FIG. 1 according to the present invention.

In the figure: 1. a circuit breaker body; 2. mounting a plate; 201. a through hole; 3. inserting a rod; 4. positioning blocks; 5. a return spring; 6. a clamping block; 7. a connecting plate; 8. a first dust screen; 9. a fixed cover; 10. a drive motor; 11. a transmission rod; 12. a heat dissipation fan; 13. a heat conductive sheet; 14. a heat sink; 141. aluminum alloy plate; 142. a copper plate; 15. a second dust screen; 151. connecting sheets; 16. tabletting; 17. a bar-shaped rod; 171. and (4) a pull ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a plastic case circuit breaker convenient for heat dissipation as shown in figures 1-5, which comprises a circuit breaker body 1, wherein two strip-shaped grooves are respectively arranged on two sides of the circuit breaker body 1, chamfers are arranged on the outer walls of the four strip-shaped grooves, the chamfers improve the convenience of clamping a fixture block 6, semicircular grooves are symmetrically arranged on two sides of the inner wall of each strip-shaped groove, a mounting plate 2 is arranged on one side of the circuit breaker body 1, a placing groove is arranged on one side of the mounting plate 2, two through holes 201 are respectively arranged on two sides of the mounting plate 2, the inner walls of the two through holes 201 are movably and alternately connected with an inserting rod 3, one end of the inserting rod 3 is fixedly connected with a positioning block 4, sliding grooves are symmetrically arranged on two sides of the positioning block 4, a reset spring 5 is fixedly connected with one side of the inner wall of each sliding groove, therefore, clamping is more convenient, the connecting plates 7 are symmetrically and fixedly connected to the two sides of the mounting plate 2, two mounting holes are formed in one side of each of the two connecting plates 7, the circuit breaker body 1 and the mounting plate 2 are positioned through the fixture blocks 6 and the semicircular grooves, and the connecting plates 7 can be mounted through the mounting holes, so that the circuit breaker body 1 is mounted;

an air inlet is formed in one side of the circuit breaker body 1, a first dust screen 8 is arranged on the inner wall of the air inlet, the first dust screen 8 is arranged to prevent external dust from entering the interior of the circuit breaker body 1 along with a heat dissipation fan 12, so that the cleanness of the interior of the circuit breaker body 1 is ensured, strip-shaped grooves are formed in two sides of the inner wall of the air inlet, strip-shaped rods 17 are symmetrically and fixedly connected to two sides of the first dust screen 8, semicircular chamfers are formed in one sides of the two strip-shaped rods 17, outer walls of the two strip-shaped rods 17 are movably clamped with inner cavities of the two strip-shaped grooves respectively, pull rings 171 are fixedly connected to one side of the two strip-shaped rods 17, the two strip-shaped rods 17 can be bent by pulling the pull rings 171 on two sides, so that the first dust screen 8 can be conveniently taken down for cleaning, thereby the heat dissipation is faster, the work of the breaker body 1 is more stable, the inner cavity of the vent is fixedly connected with a plurality of heat conducting fins 13, one end of the plurality of heat conducting fins 13 is fixedly connected with a heat radiating fin 14, the heat radiating fin 14 comprises an aluminum alloy plate 141 and a copper plate 142, the aluminum alloy plate 141 is softer and has lower cost but lower heat conducting property than copper, so that the copper plate 142 is fixedly connected inside the aluminum alloy plate 141, the heat radiating performance of the heat radiating fin 14 is ensured, and the cost of the heat radiating fin 14 is reduced, thereby the cost of the breaker body 1 is reduced, the top end of the aluminum alloy plate 141 is provided with a groove, the inner wall of the groove is fixedly connected with the outer wall of the copper plate 142, one side of the breaker body 1 and the outer side of the air inlet are fixedly connected with a fixed cover 9, the inner size of the fixed cover 9, the driving motor 10 is electrically connected with an external power supply through an external switch, a speed reducer is fixedly sleeved on the outer wall of an output shaft of the driving motor 10, the working stability of the driving motor 10 is improved, the output shaft of the driving motor 10 is connected with a transmission rod 11 through a coupler in a transmission manner, a heat dissipation fan 12 is fixedly sleeved at the end part of the transmission rod 11, the driving motor 10 drives the heat dissipation fan 12 to rotate, and the heat dissipation fan 12 blows cold air so as to take away heat;

the opposite side of circuit breaker body 1 and the outside that is located the vent have seted up back type groove, be provided with second dust screen 15 in the inner chamber in back type groove, second dust screen 15 is convex structure, avris fixedly connected with connection piece 151 of second dust screen 15, one side of back type inslot wall articulates there are a plurality of preforming 16, a plurality of preforming 16 are the rectangle array setting, one side of a plurality of preforming 16 all with one side swing joint of connection piece 151, when dismantling second dust screen 15, only need to rotate four preforming 16, make preforming 16 no longer extrude the location to connection piece 151, then take off second dust screen 15, during the installation, it can to extrude the location to connection piece 151 to rotate preforming 16 again.

The working principle of the invention is as follows: when the circuit breaker body 1 is installed, the circuit breaker body 1 is only required to be placed in a placing groove, then four inserting rods 3 are respectively pushed to move, the inserting rods 3 drive a positioning block 4 to move, when the positioning block 4 moves to the inner wall of a strip-shaped groove, two clamping blocks 6 are respectively extruded by two sides of the inner wall of the strip-shaped groove, two clamping blocks 6 extrude a return spring 5, when the two clamping blocks 6 move to the position of a semicircular groove, the two clamping blocks 6 extend under the elastic force of the return spring 5 and are clamped into the semicircular groove, so that the circuit breaker body 1 is positioned, when the circuit breaker is used, a switch of a driving motor 10 is turned on, an output shaft of the driving motor 10 rotates to drive a transmission rod 11 to rotate, so that a heat dissipation fan 12 is driven to rotate, the heat dissipation fan 12 blows wind into the circuit breaker body 1 through an air inlet, heat generated in the circuit breaker body 1 is, thereby dissipating heat to the outside through the heat dissipation fins 14.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A molded case circuit breaker convenient for heat dissipation comprises a circuit breaker body (1) and is characterized in that, the circuit breaker comprises a circuit breaker body (1), a lower mounting plate (2) is arranged below the circuit breaker body (1), the breaker body (1) is arranged at the top end of the lower mounting plate (2) in a sliding manner, the upper mounting plate (3) is arranged above the breaker body (1), a first rotary groove (4) is arranged in the middle of the upper mounting plate (3), a rotary plate (5) is rotatably connected inside the first rotary groove (4), the top end of the upper mounting plate (3) and the front surface of the first rotary groove (4) are provided with jacks (7), the inner wall of the jack (7) is inserted with an extrusion rod (8), the top end of the breaker body (1) is fixedly connected with a clamping block (6), the bottom of lower mounting panel (2) and the top of last mounting panel (3) all are provided with fixed establishment.

2. The molded case circuit breaker convenient for heat dissipation of claim 1, wherein an inner wall of the insertion hole (7) is formed with an inner thread groove (9), an outer wall of the pressing rod (8) is formed with an outer thread groove (10), and an outer wall of the inner thread groove (9) is in threaded rotational connection with an outer wall of the outer thread groove (10).

3. The molded case circuit breaker convenient for heat dissipation of claim 1, wherein a rotary block (11) is fixedly connected to the top end of the extrusion rod (8) and located above the upper mounting plate (3), and a first rubber block (12) is attached to the bottom end of the extrusion rod (8).

4. The molded case circuit breaker convenient for heat dissipation as defined in claim 1, wherein a second rubber block (13) is attached to a bottom end of the rotating plate (5), and an arc chamfer is formed on a top end of the clamping block (6).

5. A molded case circuit breaker convenient for heat dissipation according to claim 1, wherein a first spring (14) is fixedly connected to a top end of the upper mounting plate (3), and one end of the first spring (14) is fixedly connected to a bottom end of the rotating plate (5).

6. The molded case circuit breaker convenient for heat dissipation as defined in claim 1, wherein a sliding slot (15) is opened at a top end of the lower mounting plate (2), a sliding bar (16) is fixedly connected to a bottom end of the circuit breaker body (1), and an outer wall of the sliding bar (16) is slidably connected to an inner wall of the sliding slot (15).

7. The molded case circuit breaker convenient for heat dissipation of claim 6, wherein both sides of the inner wall of the sliding groove (15) are opened with a limiting groove (17), both sides of the sliding bar (16) are fixedly connected with a limiting bar (18), and the outer walls of the two limiting bars (18) are slidably connected with the inner walls of the limiting grooves (17) at the corresponding positions respectively.

8. The molded case circuit breaker convenient for heat dissipation of claim 6, wherein a second rotating groove (19) is formed in the middle of the lower mounting plate (2), a lever (20) is rotatably connected to the inside of the second rotating groove (19), a bayonet (21) is formed at the bottom end of the slide bar (16), and the inside of the bayonet (21) is movably clamped with one end of the lever (20).

9. A molded case circuit breaker with convenient heat dissipation as recited in claim 8, wherein a second spring (22) is fixedly connected to a top end of the lever (20), and one end of the second spring (22) is fixedly connected to a bottom end of the lower mounting plate (2).

10. The molded case circuit breaker convenient for heat dissipation of claim 1, wherein the fixing mechanism comprises a plurality of fixing blocks (23), two fixing blocks (23) are fixedly connected to the bottom end of the lower mounting plate (2) and the top end of the upper mounting plate (3), and fixing holes (24) are opened on the front surfaces of the plurality of fixing blocks (23).