CN213877971U

CN213877971U - Low-voltage circuit breaker

Info

Publication number: CN213877971U
Application number: CN202022619425.4U
Authority: CN
Inventors: 章加恩
Original assignee: Jiangsu Xuri Electric Power Technology Co ltd
Current assignee: Jiangsu Xuri Electric Power Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-03
Anticipated expiration: 2030-11-12

Abstract

The utility model relates to a low-voltage circuit breaker, which comprises a circuit breaker body and a mounting rack, wherein the circuit breaker body is positioned in the mounting rack, the circuit breaker body comprises a handle, the handle comprises a handle head and a base, the utility model is provided with a fixed column and a connecting column between the handle head and the base, the fixed column and the connecting column connect and fix the handle head and the base through the mutual cooperation of a connecting groove, a limiting groove and a limiting block, when the handle is broken, the replacement is convenient, the outer side of the handle is provided with a protective cover, the surface of the circuit breaker body is provided with a clamping groove, the edge of the protective cover is provided with a clamping block, so that the protective cover is clamped with the circuit breaker body, the handle is protected from being touched by mistake, two side walls of the circuit breaker body respectively extend inwards to form mounting grooves, the mounting rack comprises a back plate, two side plates are respectively arranged at two sides of the back plate, two the curb plate with the mounting groove phase-match is convenient for the quick location and the installation of circuit breaker body.

Description

Low-voltage circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically is a low-voltage circuit breaker.

Background

A low-voltage circuit breaker (once called an automatic switch) is a switching device which can not only connect and disconnect normal load current and overload current, but also connect and disconnect short-circuit current. The low-voltage circuit breaker has certain protection functions such as overload, short circuit, undervoltage and leakage protection besides the function of starting control in the circuit. The low-voltage circuit breakers are classified into various types, including a selective type (adjustable parameters of a protection device) and a non-selective type (non-adjustable parameters of the protection device) according to the use category, and an air type and a vacuum type (most of the existing domestic air type) according to the arc extinguishing medium. The low-voltage circuit breaker has a large capacity range, the minimum is 4A, and the maximum can reach 5000A. The low-voltage circuit breaker is widely applied to various levels of feed-out wires of a low-voltage distribution system, power control of various mechanical equipment and control and protection of power terminals. When the handle is pulled by the existing low-voltage circuit breaker, the operating handle and the handle seat of the handle are easy to break, the circuit breaker cannot be normally used, the circuit breaker needs to be integrally opened during maintenance, the whole handle is replaced, the cost is high, the operation is troublesome, the service life of the circuit breaker is influenced even, most of the handles of the existing circuit breaker are exposed outside, no protective measures are provided, the condition of being mistakenly moved or disorderly moved by people easily occurs, the operation of a circuit is influenced, in addition, the existing low-voltage circuit breaker is simple and convenient to install, but the circuit breaker is not easy to fix when being installed, and certain difficulty is brought to installation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low-voltage circuit breaker to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a low-voltage circuit breaker comprises a circuit breaker body and a mounting frame, wherein the circuit breaker body is positioned in the mounting frame and comprises a handle, the handle comprises a crown and a base, the crown is positioned outside the base, a fixed column is arranged on the base, a fixed groove is arranged outside the fixed column, a plurality of limiting grooves are uniformly formed in one side of the fixed groove, which is far away from the fixed column, extending inwards, the crown is provided with a connecting column, the bottom end of the connecting column extends upwards to be provided with a connecting groove, the connecting groove is matched with the fixed column, the bottom end of the outer wall of the connecting column is provided with a plurality of limiting blocks, the limiting blocks are matched with the limiting grooves, a protective cover is arranged outside the handle, a rotating shaft is arranged between the side edge of the protective cover and the circuit breaker body, a clamping groove is formed in the surface of the circuit breaker body, and a clamping block is arranged at the edge of the protective cover, draw-in groove and fixture block phase-match, the both sides wall of circuit breaker body inwards extends respectively and is provided with the mounting groove, the mounting bracket includes the backplate, the both sides of backplate are provided with two curb plates respectively, two the curb plate with the mounting groove phase-match.

As a further aspect of the present invention: the limiting block is in a right-angled triangle shape, and the top end of the inclined plane is far away from the connecting column.

As a further aspect of the present invention: the fixing column is in threaded connection with the base.

As a further aspect of the present invention: the outer surface of the crown is provided with anti-skid grains.

As a further aspect of the present invention: the lateral wall of fixed column inwards extends and is provided with the recess, be provided with the lug on the inner wall of spread groove, lug and recess phase-match.

As a further aspect of the present invention: the recess is provided with four, and the distribution of symmetry is on the fixed column, lug quantity equals with the recess.

As a further aspect of the present invention: two one side that the curb plate kept away from all is provided with fixed ear, be provided with the fixed orifices on the fixed ear.

Compared with the prior art, the utility model has the advantages of:

the utility model changes the original integrated arrangement of the handle into a connection type arrangement, the handle is provided with the connecting column on the handle head by arranging the fixed column on the base, the connecting column is provided with the connecting groove on the connecting column, the fixed column is put into the connecting groove, and the handle head is fixed with the base by matching the limiting block on the connecting column with the limiting grooves on the two sides of the fixed column, furthermore, the utility model is provided with the mutually matched groove and the lug between the fixed column and the connecting column, so that the stress between the fixed column and the connecting column is more uniform, the condition of larger stress at a certain part is avoided, the service life of the handle is prolonged, the cost is saved, the utility model is also provided with the protective cover on the outer side of the handle, and the protective cover is fixed on the breaker body by matching the clamping groove and the clamping block, thereby avoiding being opened randomly, and touching the handle by mistake to cause the problem of line connection, the utility model discloses still be provided with the mounting bracket, can realize the quick location and the installation of short circuiter body through the cooperation of curb plate and mounting groove.

Drawings

Fig. 1 is an overall structural front view of a low-voltage circuit breaker according to the present invention;

FIG. 2 is an enlarged view of a portion of A in FIG. 1;

FIG. 3 is a sectional view of the overall structure of the handle of the present invention;

fig. 4 is a schematic view of the connection structure between the connecting column and the fixing column of the present invention;

fig. 5 is a top view of the overall structure of the middle mounting frame of the present invention.

In the figure: 1. a circuit breaker body; 2. a mounting frame; 3. a handle; 4. a crown; 5. a base; 6. fixing a column; 7. fixing grooves; 8. a limiting groove; 9. connecting columns; 10. connecting grooves; 11. a limiting block; 12. a protective cover; 13. a rotating shaft; 14. a card slot; 15. a clamping block; 16. mounting grooves; 17. a back plate; 18. a side plate; 19. a groove; 20. a bump; 21. fixing the ear; 22. and (7) fixing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1 to 5, in the embodiment of the present invention:

a low-voltage circuit breaker comprises a circuit breaker body 1 and a mounting frame 2, wherein the circuit breaker body 1 is positioned in the mounting frame 2, the circuit breaker body 1 is provided with a handle 3, the handle 3 comprises a crown 4 and a base 5, the crown 4 is positioned on the outer side of the base 5, a fixed column 6 is arranged on the base 5, a fixed groove 7 is arranged on the outer side of the fixed column 6, a plurality of limiting grooves 8 are uniformly formed in one side, away from the fixed column 6, of the fixed groove 7 in an inward extending mode, a connecting column 9 is arranged on the crown 4, a connecting groove 10 is formed in the bottom end of the connecting column 9 in an upward extending mode, the connecting groove 10 is matched with the fixed column 6, a plurality of limiting blocks 11 are arranged at the bottom end of the outer wall of the connecting column 9, the limiting blocks 11 are matched with the limiting grooves 8, a protective cover 12 is arranged on the outer side of the handle 3, the protective cover 12 is made of transparent materials, be provided with pivot 13 between the side of protective cover 12 and the circuit breaker body 1, the surface of circuit breaker body 1 is provided with draw-in groove 14, the edge of protective cover 12 is provided with fixture block 15, draw-in groove 14 and fixture block 15 phase-match, the both sides wall of circuit breaker body 1 is provided with mounting groove 16 to the inside extension respectively, mounting bracket 2 includes backplate 17, the both sides of backplate 17 are provided with two curb plates 18 respectively, two curb plate 18 with the mounting groove 16 phase-match.

In the embodiment of the present invention: stopper 11 is the right triangle-shaped form, and the spliced pole 9 setting is kept away from on the top on inclined plane, and the stopper 11 of being convenient for gets into spacing groove 8, plays the restriction effect again simultaneously.

In the embodiment of the present invention: the fixing column 6 is in threaded connection with the base 5, and is convenient to detach and install.

In the embodiment of the present invention: the outer surface of the crown 4 is provided with anti-slip lines to increase friction force.

In the embodiment of the present invention: the lateral wall of fixed column 6 inwards extends and is provided with recess 19, be provided with lug 20 on the inner wall of spread groove 10, lug 20 and recess 19 phase-match for the atress between fixed column 6 and the spliced pole 9 is more even.

In the embodiment of the present invention: the grooves 19 are four and symmetrically distributed on the fixing column 6, the number of the convex blocks 20 is equal to that of the grooves 19, the stress uniformity between the fixing column 6 and the connecting column 9 is further improved, and the service lives of the fixing column 6 and the connecting column 9 are prolonged.

In the embodiment of the present invention: two one side that curb plate 18 kept away from mutually all is provided with fixed ear 21, be provided with fixed orifices 22 on the fixed ear 21, the installation of circuit breaker body 1 of being convenient for.

The utility model discloses a theory of operation is:

when the breaker is installed, a screw penetrates through a fixing hole 22 on a fixing lug 21, the installation frame 2 is fixed at a position where the breaker body 1 needs to be installed, then the side plate 18 is aligned with the installation groove 16, the breaker body 1 is pushed inwards until the breaker body 1 is matched with the installation frame 2, then the breaker body 1 is fixed with the side plate 18 through the screw and the like, when the handle 3 needs to be operated, the protective cover 12 is opened, the handle 3 is operated, after the operation is completed, the protective cover 12 is closed, so that the clamping block 15 is matched with the clamping groove 14, when the handle 3 is broken and needs to be replaced, the handle head 4 is pulled out, when the fixed column 6 needs to be replaced, the fixed column 6 is unscrewed for replacement, after the replacement is completed, the connecting groove 10 on a new handle head 4 is aligned with the fixed column 6, the lug 20 is aligned with the groove 19, then the screw is pressed down, so that the limiting block 11 is matched with the limiting groove 8, then alright normal use, easy operation, simple to operate, and can prolong the life of circuit breaker body 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a low-voltage circuit breaker, includes circuit breaker body (1) and mounting bracket (2), circuit breaker body (1) is located mounting bracket (2), its characterized in that: the breaker body (1) comprises a handle (3), the handle (3) comprises a crown (4) and a base (5), the crown (4) is located on the outer side of the base (5), a fixing column (6) is arranged on the base (5), a fixing groove (7) is arranged on the outer side of the fixing column (6), a plurality of limiting grooves (8) are uniformly formed in one side, far away from the fixing column (6), of the fixing groove (7) in a mode of extending inwards, a connecting column (9) is arranged on the crown (4), a connecting groove (10) is formed in the bottom end of the connecting column (9) in a mode of extending upwards, the connecting groove (10) is matched with the fixing column (6), a plurality of limiting blocks (11) are arranged at the bottom end of the outer wall of the connecting column (9), the limiting blocks (11) are matched with the limiting grooves (8), and a protective cover (12) is arranged on the outer side of the handle (3), be provided with pivot (13) between the side of protective cover (12) and circuit breaker body (1), the surface of circuit breaker body (1) is provided with draw-in groove (14), the edge of protective cover (12) is provided with fixture block (15), draw-in groove (14) and fixture block (15) phase-match, the both sides wall of circuit breaker body (1) inwards extends respectively and is provided with mounting groove (16), mounting bracket (2) include backplate (17), the both sides of backplate (17) are provided with two curb plates (18), two respectively curb plate (18) with mounting groove (16) phase-match.

2. A low-voltage circuit breaker as claimed in claim 1, characterized in that: the limiting block (11) is in a right-angled triangle shape, and the top end of the inclined plane is far away from the connecting column (9).

3. A low-voltage circuit breaker as claimed in claim 1, characterized in that: the fixing column (6) is in threaded connection with the base (5).

4. A low-voltage circuit breaker as claimed in claim 1, characterized in that: the outer surface of the crown (4) is provided with anti-skid grains.

5. A low-voltage circuit breaker as claimed in claim 1, characterized in that: the side wall of the fixing column (6) extends inwards to form a groove (19), a convex block (20) is arranged on the inner wall of the connecting groove (10), and the convex block (20) is matched with the groove (19).

6. Low voltage circuit breaker as claimed in claim 5, characterized in that: the number of the grooves (19) is four, the grooves are symmetrically distributed on the fixing column (6), and the number of the convex blocks (20) is equal to that of the grooves (19).

7. A low-voltage circuit breaker as claimed in claim 1, characterized in that: two one side that curb plate (18) kept away from mutually all is provided with fixed ear (21), be provided with fixed orifices (22) on fixed ear (21).