CN215988620U

CN215988620U - Low-voltage circuit breaker

Info

Publication number: CN215988620U
Application number: CN202122163182.2U
Authority: CN
Inventors: 孔屏
Original assignee: Wuhan Rongzhi Electric Technology Co ltd
Current assignee: Wuhan Rongzhi Electric Technology Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-03-08
Anticipated expiration: 2031-09-08

Abstract

The utility model discloses a low-voltage circuit breaker, relates to the technical field of low-voltage circuit breakers, and aims to solve the problems that a lead is fixed through a screw in the conventional low-voltage circuit breaker, and the fixed connection part is easy to break when the lead is pulled by external force. The limiting groove has all been seted up to the upper end and the lower extreme of circuit breaker main part, the mounting groove has all been seted up to the both sides of limiting groove, the internally mounted of mounting groove has the setting element, the setting element includes locating plate, connecting seat and first spring, first spring sets up in the inside of mounting groove, the connecting seat sets up in the one end of first spring, the one end that first spring was kept away from to the connecting seat extends to the outside of mounting groove to with locating plate fixed connection, the inboard of locating plate is provided with the antislip strip, and the antislip strip is provided with a plurality of, the front end of locating plate is provided with the deflector, the switch is installed to the front end of circuit breaker main part.

Description

Low-voltage circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage circuit breakers, in particular to a low-voltage circuit breaker.

Background

The low-voltage circuit breaker is also called an automatic air switch or an automatic air circuit breaker, and is called a circuit breaker for short. It is an electric appliance which not only has the function of manual switch, but also can automatically carry out voltage loss, undervoltage, overload and short-circuit protection. It can be used to distribute electric energy, start asynchronous motor infrequently, protect power supply circuit and motor, and automatically cut off circuit when they have serious overload or short circuit and undervoltage faults, and its function is equivalent to the combination of fuse switch and over-and-under-heat relay. 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.

However, the existing low-voltage circuit breaker realizes the fixation of a lead through a screw, and when the lead is pulled by external force, the fixed connection part is easy to break, so that the existing requirements are not met, and the low-voltage circuit breaker is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-voltage circuit breaker, which solves the problem that the fixed connection part is easy to break when a lead is pulled by external force because the conventional low-voltage circuit breaker realizes the fixation of the lead by a screw in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a low-voltage circuit breaker, includes the circuit breaker main part, the spacing groove has all been seted up to the upper end and the lower extreme of circuit breaker main part, the mounting groove has all been seted up to the both sides of spacing groove, the internally mounted of mounting groove has the setting element, the setting element includes locating plate, connecting seat and first spring, first spring sets up in the inside of mounting groove, the connecting seat sets up in the one end of first spring, the one end that first spring was kept away from to the connecting seat extends to the outside of mounting groove to with locating plate fixed connection, the inboard of locating plate is provided with the antislip strip, and the antislip strip is provided with a plurality of, the front end of locating plate is provided with the deflector, the switch is installed to the front end of circuit breaker main part.

Preferably, the positioning member is provided in an arc-shaped structure.

Preferably, the both ends of circuit breaker main part all are provided with the spread groove, the outside of circuit breaker main part is provided with the mount, the mount includes bracket, support frame, retaining member and backplate, and the retaining member is located one side of spread groove.

Preferably, the support frame sets up in the both ends in backplate the place ahead, the bracket sets up in the lower extreme of support frame, the retaining member sets up in the inboard of support frame, the one end that the backplate was kept away from to the support frame is provided with the connecting hole, waist type hole has been seted up to the inside of backplate.

Preferably, the retaining member includes connecting rod, stopper, second spring and arm-tie, the stopper sets up in the one end of connecting rod, and the stopper keeps away from the one end of connecting rod and extends to the inside of spread groove, the stopper sets up to round platform shape structure, the connecting hole is passed to the one end that the stopper was kept away from to the connecting rod to with arm-tie fixed connection, the second spring sets up in the outside of connecting rod to be located between stopper and the support frame.

Preferably, a threaded section is arranged in the middle of the connecting rod, the connecting hole is a threaded hole matched with the threaded section, and the outer diameter of the threaded section is larger than the diameter of the connecting rod.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the low-voltage circuit breaker is provided with the limiting groove at the position for fixing the lead, two symmetrical positioning parts are arranged in the limiting groove, each positioning part comprises the positioning plate, the connecting seat and the first spring, the positioning plate can be displaced by utilizing the good elasticity and the deformation recovery capacity of the first spring, one end of the lead is fixed with the circuit breaker main body through the screw, and then the lead is positioned through the positioning parts, so that the additional fixing force is increased, and the situation that the lead is broken due to abrasion at the connecting part of the lead and the screw is not easy to generate when the lead is pulled by external force is avoided.

2. According to the utility model, the guide plates are arranged at the front ends of the positioning plates, and the included angle between each guide plate and each positioning plate is forty-five degrees, so that the guide plates at the front ends of the two positioning plates are in a horn-shaped structure, the front part is large, the back part is small, a wire is conveniently clamped between the two positioning plates, and the convenience of clamping is improved.

3. According to the utility model, the fixing frame is arranged on the outer side of the breaker main body, the whole low-voltage breaker is fixedly installed through the waist-shaped hole in the back plate of the fixing frame, the connection between the breaker main body and the fixing frame is realized through the bearing limit of the bracket and the matching connection between the limiting block and the connecting groove, and the limiting block can move by utilizing the good elasticity and the recovery deformation capacity of the second spring, so that the breaker main body can be independently disassembled and assembled, and the maintenance of the breaker main body is more convenient at a later stage.

Drawings

Fig. 1 is a front view of a low-voltage circuit breaker according to the utility model;

FIG. 2 is an enlarged view of a portion of region A of the present invention;

FIG. 3 is a schematic structural diagram of a positioning plate according to the present invention;

fig. 4 is a rear view of a low-voltage circuit breaker according to the utility model.

In the figure: 1. a circuit breaker main body; 2. a limiting groove; 3. a positioning member; 31. positioning a plate; 311. anti-slip strips; 312. a guide plate; 32. a connecting seat; 33. a first spring; 4. a fixed mount; 41. a bracket; 42. a support frame; 421. connecting holes; 43. a locking member; 431. a connecting rod; 4311. a threaded segment; 432. a limiting block; 433. a second spring; 434. pulling a plate; 44. a back plate; 441. a kidney-shaped hole; 5. mounting grooves; 6. connecting grooves; 7. and (4) switching.

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.

Referring to fig. 1-4, an embodiment of the present invention is shown: a low-voltage circuit breaker comprises a circuit breaker main body 1, wherein the upper end and the lower end of the circuit breaker main body 1 are respectively provided with a limiting groove 2, two sides of each limiting groove 2 are respectively provided with a mounting groove 5, a positioning part 3 is mounted inside each mounting groove 5, each positioning part 3 comprises a positioning plate 31, a connecting seat 32 and a first spring 33, each first spring 33 is arranged inside each mounting groove 5, each connecting seat 32 is arranged at one end of each first spring 33, one end, far away from each first spring 33, of each connecting seat 32 extends to the outside of each mounting groove 5 and is fixedly connected with the corresponding positioning plate 31, an anti-slip strip 311 is arranged on the inner side of each positioning plate 31, each anti-slip strip 311 and each positioning plate 31 are of an integrated structure, friction force contacting with a lead can be increased through each anti-slip strip 311, so that fixing force is increased, a plurality of anti-slip strips 311 are arranged, a guide plate 312 is arranged at the front end of each positioning plate 31, each positioning part 3 is of an arc-shaped structure and conforms to the appearance of the lead, the contact area is increased. The slope of deflector 312 sets up in the below of locating plate 31, and its incline direction is opposite with the arc trend of locating plate 31 for two deflectors 312 are tubaeform structure, and big end is little before, conveniently goes into the wire between two locating plates 31, and switch 7 is installed to the front end of circuit breaker main part 1, through switch 7 clockwise or anticlockwise rotation, ensures low voltage circuit breaker's opening and close.

Further, both ends of circuit breaker main part 1 all are provided with connecting groove 6, the outside of circuit breaker main part 1 is provided with mount 4, mount 4 includes bracket 41, support frame 42, retaining member 43 and backplate 44, and retaining member 43 is located one side of connecting groove 6, support frame 42 sets up in the both ends in backplate 44 the place ahead, support frame 42 and backplate 44 structure as an organic whole, bracket 41 sets up in the lower extreme of support frame 42, bracket 41 and support frame 42 structure as an organic whole, retaining member 43 sets up in the inboard of support frame 42, the one end that backplate 44 was kept away from to support frame 42 is provided with connecting hole 421, waist type hole 441 has been seted up to the inside of backplate 44, realize the holistic fixed of mount 4 through waist type hole 441.

Further, the locking member 43 includes a connecting rod 431, a limiting block 432, a second spring 433 and a pulling plate 434, the limiting block 432 is disposed at one end of the connecting rod 431, the limiting block 432 and the connecting rod 431 are of an integral structure, and one end of the limiting block 432 far away from the connecting rod 431 extends to the inside of the connecting groove 6, the limiting block 432 is configured into a truncated cone structure, so that diameters of two ends of the limiting block 432 are different, the connecting groove 6 and the limiting block 432 are in conformity with each other in shape, and assembly efficiency can be improved during assembly, one end of the connecting rod 431 far away from the limiting block 432 passes through the connecting hole 421 and is fixedly connected with the pulling plate 434, the pulling plate 434 is in welded connection with the connecting rod 431, the second spring 433 is disposed outside the connecting rod 431 and is located between the limiting block 432 and the supporting frame 42, the second spring 433 is fixedly connected with the limiting block 432 and the supporting frame 42, a threaded section 4311 is disposed at a middle position of the connecting rod 431, the connecting hole 421 is a threaded hole matched with the threaded section 4311, the connected mode is simple, has the auto-lock ability to can be fixed in the position department of keeping away from spread groove 6 with stopper 432, can avoid at the in-process of installation circuit breaker main part 1, stopper 432 causes the hindrance, and unmanned free hand comes pulling retaining member 43 simultaneously, increases the convenience of use, and the external diameter of screw thread section 4311 is greater than the diameter of connecting rod 431, is convenient for connecting rod 431 freely slides.

The working principle is as follows: when in use, the whole fixing frame 4 is fixed with the wall surface through the waist-shaped hole 441 on the back plate 44 of the fixing frame 4. Then, the breaker main body 1 is inserted into the fixing frame 4 from the upper side of the fixing frame 4, the bottom surface and the side surface of the breaker main body 1 are attached to the two brackets 41, then the pulling plate 434 of the locking member 43 is rotated, the pulling plate 434 drives the connecting rod 431 to rotate, the thread section 4311 is gradually separated from the connecting hole 421, and under the action of the capability of the second spring 433 of recovering deformation, the connecting rod 431 and the limiting block 432 are driven to move, so that the limiting block 432 is inserted into the connecting grooves 6 at the two ends of the breaker main body 1, and the breaker main body 1 is locked. Subsequently connect the wire, the one end of wire is inserted the downthehole and the terminal connection of spacing groove 2 rear end, realize the fixed to the wire through the screw, press the wire downwards afterwards, the deflector 312 of wire extrusion two locating plate 31 front ends, because deflector 312 slope sets up, make deflector 312 have the guide effect, first spring 33 atress produces the compression afterwards, two deflectors 312 and locating plate 31 carry out the displacement, the wire is successfully crowded into between two locating plates 31, it cliies by two locating plates 31, the realization is to the location and the fixed of wire. The plurality of wires are fixed to the breaker main body 1 in turn in the above-described manner.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A low-voltage circuit breaker comprising a circuit breaker body (1), characterized in that: the upper end and the lower end of the breaker main body (1) are both provided with a limit groove (2), mounting grooves (5) are formed in the two sides of the limiting groove (2), a positioning piece (3) is mounted in each mounting groove (5), the positioning piece (3) comprises a positioning plate (31), a connecting seat (32) and a first spring (33), the first spring (33) is arranged in the mounting groove (5), the connecting seat (32) is arranged at one end of the first spring (33), one end of the connecting seat (32) far away from the first spring (33) extends to the outside of the mounting groove (5), and is fixedly connected with a positioning plate (31), the inner side of the positioning plate (31) is provided with an anti-slip strip (311), and the antislip strip (311) is provided with a plurality of, the front end of locating plate (31) is provided with deflector (312), switch (7) are installed to the front end of circuit breaker main part (1).

2. A low-voltage circuit breaker as claimed in claim 1, characterized in that: the positioning piece (3) is of an arc-shaped structure.

3. A low-voltage circuit breaker as claimed in claim 1, characterized in that: the both ends of circuit breaker main part (1) all are provided with spread groove (6), the outside of circuit breaker main part (1) is provided with mount (4), mount (4) include bracket (41), support frame (42), retaining member (43) and backplate (44), and retaining member (43) are located one side of spread groove (6).

4. A low-voltage circuit breaker as claimed in claim 3, characterized in that: support frame (42) set up in both ends in backplate (44) the place ahead, bracket (41) set up in the lower extreme of support frame (42), retaining member (43) set up in the inboard of support frame (42), the one end that backplate (44) were kept away from in support frame (42) is provided with connecting hole (421), waist type hole (441) have been seted up to the inside of backplate (44).

5. A low-voltage circuit breaker as claimed in claim 4, characterized in that: retaining member (43) include connecting rod (431), stopper (432), second spring (433) and arm-tie (434), stopper (432) set up in the one end of connecting rod (431), and stopper (432) keep away from the inside that the one end of connecting rod (431) extends to spread groove (6), stopper (432) set up to round platform shape structure, connecting rod (431) are kept away from the one end of stopper (432) and are passed connecting hole (421) to with arm-tie (434) fixed connection, second spring (433) set up in the outside of connecting rod (431) to be located between stopper (432) and support frame (42).

6. Low voltage circuit breaker as claimed in claim 5, characterized in that: the middle position of the connecting rod (431) is provided with a threaded section (4311), the connecting hole (421) is a threaded hole matched with the threaded section (4311), and the outer diameter of the threaded section (4311) is larger than the diameter of the connecting rod (431).